From 000c24b90ffe0ff88a6b1f21c2175371edbe6a91 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 24 Jan 2022 12:04:28 +0200
Subject: [PATCH 01/26] Imported language changes from experimental

---
 GitVersion.yml                                |   1 +
 artifacts/tanka-docs-section.yml              |   4 -
 .../Extensions/FieldSelectionExtensions.cs    |  23 +++
 .../Extensions/ReadOnlyListExtensions.cs      | 142 +++++++++++++
 .../Extensions/SchemaDefinitionExtensions.cs  |  21 ++
 .../Extensions/TypeDefinitionExtensions.cs    | 189 ++++++++++++++++++
 .../Extensions/UnionDefinitionExtensions.cs   |  15 +-
 .../Nodes/ExecutableDocument.cs               |   5 +
 .../Nodes/FragmentDefinitions.cs              |   5 +-
 src/graphql.language/Nodes/INode.cs           |   4 +-
 src/graphql.language/Nodes/Location.cs        |   2 +-
 src/graphql.language/Nodes/SelectionSet.cs    |   5 +-
 .../RootOperationTypeDefinitions.cs           |   5 +
 .../Nodes/TypeSystem/SchemaDefinition.cs      |   7 +-
 .../Nodes/TypeSystem/TypeDefinition.cs        |   2 +
 .../Nodes/ExecutableDocumentFacts.cs          |  14 ++
 .../graphql.language.tests.csproj             |   4 +-
 17 files changed, 429 insertions(+), 19 deletions(-)
 delete mode 100644 artifacts/tanka-docs-section.yml
 create mode 100644 src/graphql.language/Extensions/FieldSelectionExtensions.cs
 create mode 100644 src/graphql.language/Extensions/ReadOnlyListExtensions.cs
 create mode 100644 src/graphql.language/Extensions/TypeDefinitionExtensions.cs

diff --git a/GitVersion.yml b/GitVersion.yml
index f0ed2fb64..e2162493b 100644
--- a/GitVersion.yml
+++ b/GitVersion.yml
@@ -1,4 +1,5 @@
 mode: ContinuousDeployment
+next-version: 3.0
 branches:
   master:
     tag: beta
diff --git a/artifacts/tanka-docs-section.yml b/artifacts/tanka-docs-section.yml
deleted file mode 100644
index 9a0472caf..000000000
--- a/artifacts/tanka-docs-section.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-id: artifacts
-type: artifacts
-includes:
-  - "**/*.md"
diff --git a/src/graphql.language/Extensions/FieldSelectionExtensions.cs b/src/graphql.language/Extensions/FieldSelectionExtensions.cs
new file mode 100644
index 000000000..10d2369d4
--- /dev/null
+++ b/src/graphql.language/Extensions/FieldSelectionExtensions.cs
@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
+
+namespace Tanka.GraphQL.Language
+{
+    public static class FieldSelectionExtensions
+    {
+        public static SelectionSet Merge(this IEnumerable<FieldSelection> fieldSelections)
+        {
+            var selections = new List<ISelection>();
+
+            foreach (var fieldSelection in fieldSelections)
+            {
+                var fieldSelectionSet = fieldSelection.SelectionSet;
+
+                if (fieldSelectionSet != null)
+                    selections.AddRange(fieldSelectionSet);
+            }
+
+            return new SelectionSet(selections);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ReadOnlyListExtensions.cs b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
new file mode 100644
index 000000000..12bc9d3c5
--- /dev/null
+++ b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
@@ -0,0 +1,142 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.Language
+{
+    public static class ReadOnlyListExtensions
+    {
+        public static IReadOnlyList<T>? Concat<T>(this IReadOnlyList<T>? left, IReadOnlyList<T>? right)
+        {
+            if (left is null && right is null)
+                return null;
+
+            if (left is null != right is null)
+                return left ?? right;
+
+            var result = left?.ToList() ?? new List<T>();
+
+            if (right is not null)
+            {
+                result.AddRange(right);
+            }
+
+            return result;
+        }
+
+        public static Directives? Concat(this Directives? left, Directives? right)
+        {
+            var directives = Concat(left as IReadOnlyList<Directive>, right);
+
+            if (directives is null)
+                return null;
+
+            return new Directives(directives, left?.Location ?? right?.Location);
+        }
+
+        public static IReadOnlyList<T>? Join<T, TKey>(
+            this IReadOnlyList<T>? left, 
+            IReadOnlyList<T>? right, 
+            Func<T, TKey> keySelector,
+            Func<T, T, T> resultSelector)
+        {
+            if (left is null && right is null)
+                return null;
+
+            if (left is null != right is null)
+                return left ?? right;
+
+            var result = left?.ToList() ?? new List<T>();
+
+            if (right is not null)
+            {
+                return result.Join(
+                    right,
+                    keySelector,
+                    keySelector,
+                    resultSelector).ToList();
+            }
+
+            return result;
+        }
+
+        public static IReadOnlyList<NamedType>? Join(
+            this IReadOnlyList<NamedType>? left,
+            IReadOnlyList<NamedType>? right)
+        {
+            return Join(
+                left,
+                right,
+                namedType => namedType.Name.Value,
+                (leftItem, _) => leftItem);
+        }
+
+        public static FieldsDefinition? Join(
+            this FieldsDefinition? left,
+            FieldsDefinition? right)
+        {
+            if (left is null && right is null)
+                return null;
+
+            if (left is null != right is null)
+                return left ?? right;
+
+            var fields = Join(
+                left,
+                right,
+                field => field.Name.Value,
+                (leftField, _) => leftField);
+
+            if (fields is null)
+                return null;
+
+            return new FieldsDefinition(fields, left?.Location ?? right?.Location);
+        }
+
+        public static InputFieldsDefinition? Join(
+            this InputFieldsDefinition? left,
+            InputFieldsDefinition? right)
+        {
+            if (left is null && right is null)
+                return null;
+
+            if (left is null != right is null)
+                return left ?? right;
+
+            var fields = Join(
+                left,
+                right,
+                field => field.Name.Value,
+                (leftField, _) => leftField);
+
+            if (fields is null)
+                return null;
+
+            return new InputFieldsDefinition(fields, left?.Location ?? right?.Location);
+        }
+
+        public static EnumValuesDefinition? Join(
+            this EnumValuesDefinition? left,
+            EnumValuesDefinition? right)
+        {
+            if (left is null && right is null)
+                return null;
+
+            if (left is null != right is null)
+                return left ?? right;
+
+            var values = Join(
+                left,
+                right,
+                value => value.Value.Name.Value,
+                (leftValue, _) => leftValue);
+
+            if (values is null)
+                return null;
+
+            return new EnumValuesDefinition(values, left?.Location ?? right?.Location);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs b/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
index e27d7b7a0..01aad4ad0 100644
--- a/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Xml.Serialization;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -25,6 +26,16 @@ public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
                 definition.Location);
         }
 
+        public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
+            IReadOnlyList<Directive>? directives)
+        {
+            return new SchemaDefinition(
+                definition.Description,
+                Directives.From(directives), 
+                definition.Operations,
+                definition.Location);
+        }
+
         public static SchemaDefinition WithOperations(this SchemaDefinition definition,
             RootOperationTypeDefinitions operations)
         {
@@ -34,5 +45,15 @@ public static SchemaDefinition WithOperations(this SchemaDefinition definition,
                 operations,
                 definition.Location);
         }
+
+        public static SchemaDefinition WithOperations(this SchemaDefinition definition,
+            IReadOnlyList<RootOperationTypeDefinition> operations)
+        {
+            return new SchemaDefinition(
+                definition.Description,
+                definition.Directives,
+                RootOperationTypeDefinitions.From(operations),
+                definition.Location);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/TypeDefinitionExtensions.cs b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
new file mode 100644
index 000000000..06dc2e2a3
--- /dev/null
+++ b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
@@ -0,0 +1,189 @@
+using System;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.Language
+{
+    public static class TypeDefinitionExtensions
+    {
+        public static TypeDefinition Extend(
+            this TypeDefinition typeDefinition,
+            params TypeExtension[] typeExtensions)
+        {
+            return typeDefinition switch
+            {
+                EnumDefinition enumDefinition => Extend(enumDefinition, typeExtensions),
+                InputObjectDefinition inputObjectDefinition => Extend(inputObjectDefinition, typeExtensions),
+                InterfaceDefinition interfaceDefinition => Extend(interfaceDefinition, typeExtensions),
+                ObjectDefinition objectDefinition => Extend(objectDefinition, typeExtensions),
+                ScalarDefinition scalarDefinition => Extend(scalarDefinition, typeExtensions),
+                UnionDefinition unionDefinition => Extend(unionDefinition, typeExtensions),
+                _ => throw new ArgumentOutOfRangeException(nameof(typeDefinition))
+            };
+        }
+
+        public static UnionDefinition Extend(
+            this UnionDefinition unionDefinition,
+            params TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(unionDefinition, extension);
+
+                var extensionDefinition = (UnionDefinition) extension.Definition;
+                unionDefinition = unionDefinition
+                    .WithDirectives(
+                        unionDefinition.Directives
+                            .Concat(extensionDefinition.Directives)
+                    )
+                    .WithMembers(
+                        unionDefinition.Members
+                            .Join(extensionDefinition.Members)
+                    );
+            }
+
+            return unionDefinition;
+        }
+
+        public static ScalarDefinition Extend(
+            this ScalarDefinition scalarDefinition,
+            TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(scalarDefinition, extension);
+
+                var extensionDefinition = (ScalarDefinition) extension.Definition;
+                scalarDefinition = scalarDefinition
+                    .WithDirectives(
+                        scalarDefinition.Directives
+                            .Concat(extensionDefinition.Directives)
+                    );
+            }
+
+            return scalarDefinition;
+        }
+
+        public static ObjectDefinition Extend(
+            this ObjectDefinition objectDefinition,
+            TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(objectDefinition, extension);
+
+                var extensionDefinition = (ObjectDefinition) extension.Definition;
+
+                var extendedDirectives = objectDefinition.Directives
+                    .Concat(extensionDefinition.Directives);
+
+                var extendedFields = objectDefinition.Fields
+                    .Join(extensionDefinition.Fields);
+
+                var extendedInterfaces = objectDefinition.Interfaces
+                    .Join(extensionDefinition.Interfaces);
+
+                objectDefinition = new ObjectDefinition(
+                    objectDefinition.Description,
+                    objectDefinition.Name,
+                    ImplementsInterfaces.From(extendedInterfaces),
+                    extendedDirectives,
+                    extendedFields,
+                    objectDefinition.Location);
+            }
+
+            return objectDefinition;
+        }
+
+        public static InterfaceDefinition Extend(
+            this InterfaceDefinition interfaceDefinition,
+            TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(interfaceDefinition, extension);
+
+                var extensionDefinition = (InterfaceDefinition) extension.Definition;
+
+                var extendedDirectives = interfaceDefinition.Directives
+                    .Concat(extensionDefinition.Directives);
+
+                var extendedFields = interfaceDefinition.Fields
+                    .Join(extensionDefinition.Fields);
+
+                var extendedInterfaces = interfaceDefinition.Interfaces
+                    .Join(extensionDefinition.Interfaces);
+
+                interfaceDefinition = new InterfaceDefinition(
+                    interfaceDefinition.Description,
+                    interfaceDefinition.Name,
+                    ImplementsInterfaces.From(extendedInterfaces),
+                    extendedDirectives,
+                    extendedFields,
+                    interfaceDefinition.Location);
+            }
+
+            return interfaceDefinition;
+        }
+
+        public static InputObjectDefinition Extend(
+            this InputObjectDefinition inputObjectDefinition,
+            TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(inputObjectDefinition, extension);
+
+                var extensionDefinition = (InputObjectDefinition) extension.Definition;
+
+                var extendedDirectives = inputObjectDefinition.Directives
+                    .Concat(extensionDefinition.Directives);
+
+                var extendedFields = inputObjectDefinition.Fields
+                    .Join(extensionDefinition.Fields);
+
+                inputObjectDefinition = new InputObjectDefinition(
+                    inputObjectDefinition.Description,
+                    inputObjectDefinition.Name,
+                    extendedDirectives,
+                    extendedFields,
+                    inputObjectDefinition.Location);
+            }
+
+            return inputObjectDefinition;
+        }
+
+        public static EnumDefinition Extend(
+            this EnumDefinition enumDefinition,
+            params TypeExtension[] typeExtensions)
+        {
+            foreach (var extension in typeExtensions)
+            {
+                EnsureExtendedType(enumDefinition, extension);
+
+                var extensionDefinition = (EnumDefinition) extension.Definition;
+
+                var extendedDirectives = enumDefinition.Directives
+                    .Concat(extensionDefinition.Directives);
+
+                var extendedValues = enumDefinition.Values
+                    .Join(extensionDefinition.Values);
+
+                enumDefinition = new EnumDefinition(
+                    enumDefinition.Description,
+                    enumDefinition.Name,
+                    extendedDirectives,
+                    extendedValues,
+                    enumDefinition.Location);
+            }
+
+            return enumDefinition;
+        }
+
+        private static void EnsureExtendedType(TypeDefinition typeDefinition, TypeExtension typeExtension)
+        {
+            if (typeDefinition.Kind != typeExtension.ExtendedKind)
+                throw new InvalidOperationException(
+                    $"Invalid type extension '{typeExtension.ExtendedKind}' for type '{typeDefinition.Kind}'.");
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
index be0bbd904..c6b9049dc 100644
--- a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
@@ -6,10 +6,10 @@ namespace Tanka.GraphQL.Language
 {
     public static class UnionDefinitionExtensions
     {
-        public static UnionDefinition WithDescription(this UnionDefinition definition, 
+        public static UnionDefinition WithDescription(this UnionDefinition definition,
             in StringValue? description)
         {
-            return new UnionDefinition(
+            return new(
                 description,
                 definition.Name,
                 definition.Directives,
@@ -17,23 +17,24 @@ public static UnionDefinition WithDescription(this UnionDefinition definition,
                 definition.Location);
         }
 
-        public static UnionDefinition WithName(this UnionDefinition definition, 
+        public static UnionDefinition WithName(this UnionDefinition definition,
             in Name name)
         {
-            return new UnionDefinition(
+            return new(
                 definition.Description,
                 name,
                 definition.Directives,
                 definition.Members,
                 definition.Location);
         }
+
         public static UnionDefinition WithDirectives(this UnionDefinition definition,
             IReadOnlyList<Directive>? directives)
         {
-            return new UnionDefinition(
+            return new(
                 definition.Description,
                 definition.Name,
-                Directives.From(directives), 
+                Directives.From(directives),
                 definition.Members,
                 definition.Location);
         }
@@ -41,7 +42,7 @@ public static UnionDefinition WithDirectives(this UnionDefinition definition,
         public static UnionDefinition WithMembers(this UnionDefinition definition,
             IReadOnlyList<NamedType>? members)
         {
-            return new UnionDefinition(
+            return new(
                 definition.Description,
                 definition.Name,
                 definition.Directives,
diff --git a/src/graphql.language/Nodes/ExecutableDocument.cs b/src/graphql.language/Nodes/ExecutableDocument.cs
index 0c31e48e5..7835904f6 100644
--- a/src/graphql.language/Nodes/ExecutableDocument.cs
+++ b/src/graphql.language/Nodes/ExecutableDocument.cs
@@ -29,5 +29,10 @@ public static implicit operator ExecutableDocument(ReadOnlySpan<byte> value)
             var parser = Parser.Create(value);
             return parser.ParseExecutableDocument();
         }
+
+        public override string ToString()
+        {
+            return Printer.Print(this);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FragmentDefinitions.cs b/src/graphql.language/Nodes/FragmentDefinitions.cs
index f128ab61e..7ff20e1f8 100644
--- a/src/graphql.language/Nodes/FragmentDefinitions.cs
+++ b/src/graphql.language/Nodes/FragmentDefinitions.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Tanka.GraphQL.Language.Nodes
 {
@@ -9,5 +10,7 @@ public FragmentDefinitions(IReadOnlyList<FragmentDefinition> items, in Location?
         }
 
         public override NodeKind Kind => NodeKind.FragmentDefinitions;
+
+        public static FragmentDefinitions None = new (Array.Empty<FragmentDefinition>());
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/INode.cs b/src/graphql.language/Nodes/INode.cs
index e930af943..7f3494668 100644
--- a/src/graphql.language/Nodes/INode.cs
+++ b/src/graphql.language/Nodes/INode.cs
@@ -1,4 +1,6 @@
-namespace Tanka.GraphQL.Language.Nodes
+using System.Runtime.CompilerServices;
+
+namespace Tanka.GraphQL.Language.Nodes
 {
     public interface INode
     {
diff --git a/src/graphql.language/Nodes/Location.cs b/src/graphql.language/Nodes/Location.cs
index fa62ca83e..3d605cd4a 100644
--- a/src/graphql.language/Nodes/Location.cs
+++ b/src/graphql.language/Nodes/Location.cs
@@ -15,7 +15,7 @@ public override string ToString()
         {
             if (Equals(default(Location)))
                 return "@";
-            
+
             return $"@{Line}:{Column}";
         }
     }
diff --git a/src/graphql.language/Nodes/SelectionSet.cs b/src/graphql.language/Nodes/SelectionSet.cs
index 725f74fe1..b08f2dfcf 100644
--- a/src/graphql.language/Nodes/SelectionSet.cs
+++ b/src/graphql.language/Nodes/SelectionSet.cs
@@ -1,10 +1,11 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Tanka.GraphQL.Language.Nodes
 {
     public sealed class SelectionSet : CollectionNodeBase<ISelection>
     {
-        //todo: remove
+        [Obsolete("SelectionSet is enumerable")]
         public readonly IReadOnlyList<ISelection> Selections;
 
         public SelectionSet(
diff --git a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
index 0fed73b67..572d51e78 100644
--- a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
+++ b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
@@ -9,5 +9,10 @@ public RootOperationTypeDefinitions(IReadOnlyList<RootOperationTypeDefinition> i
         }
 
         public override NodeKind Kind => NodeKind.RootOperationTypeDefinitions;
+
+        public static RootOperationTypeDefinitions From(IReadOnlyList<RootOperationTypeDefinition> operations)
+        {
+            return new RootOperationTypeDefinitions(operations);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs b/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
index b8a7ea85b..c497cfa11 100644
--- a/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
@@ -33,10 +33,15 @@ public static implicit operator SchemaDefinition(string value)
             return parser.ParseSchemaDefinition();
         }
 
-        public static implicit operator SchemaDefinition(in ReadOnlySpan<byte> value)
+        public static implicit operator SchemaDefinition(ReadOnlySpan<byte> value)
         {
             var parser = Parser.Create(value);
             return parser.ParseSchemaDefinition();
         }
+
+        public override string ToString()
+        {
+            return Printer.Print(this);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
index de7bef620..096d9254d 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
@@ -1,4 +1,6 @@
 using System;
+using System.Collections;
+using System.Collections.Generic;
 using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
diff --git a/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs b/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
index 535d4c131..627e891c7 100644
--- a/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
+++ b/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
@@ -30,5 +30,19 @@ public void FromString()
             Assert.NotNull(original.OperationDefinitions);
             Assert.Single(original.OperationDefinitions);
         }
+
+        [Fact]
+        public void OverrideToString()
+        {
+            /* Given */
+            string expected = "{ field1 field2 }";
+            ExecutableDocument original = expected;
+
+            /* When */
+            var actual = original.ToString();
+
+            /* Then */
+            Assert.Equal(expected, actual);
+        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/graphql.language.tests.csproj b/tests/graphql.language.tests/graphql.language.tests.csproj
index 1ddb4c044..5782a9ac8 100644
--- a/tests/graphql.language.tests/graphql.language.tests.csproj
+++ b/tests/graphql.language.tests/graphql.language.tests.csproj
@@ -18,14 +18,14 @@
     </Content>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
+    <PackageReference Include="coverlet.collector" Version="3.0.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

From 7e037734fbde18ae65bb84c8f04a7908de6990d1 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Wed, 9 Feb 2022 19:41:51 +0200
Subject: [PATCH 02/26] Get some tests running

+ Basic execution tests working :)
---
 Directory.Build.props                         |   2 +-
 .../graphql.benchmarks/ExecutionBenchmarks.cs |   2 +-
 benchmarks/graphql.benchmarks/Utils.cs        |  16 +-
 .../ValidationBenchmarks.cs                   |   2 +-
 .../graphql.benchmarks.csproj                 |   2 +-
 .../GraphQL.Dev.Reviews.csproj                |   2 +-
 .../graphql.dev.allocations.csproj            |   2 +-
 .../graphql.dev.chat.data.csproj              |   2 +-
 .../graphql.dev.chat.web.csproj               |   2 +-
 run-benchmarks.ps1                            |   2 +-
 ...GraphQL.Extensions.ApolloFederation.csproj |   2 +-
 .../GraphQL.Extensions.Tracing.csproj         |   2 +-
 .../graphql.generator.core.csproj             |   2 +-
 .../graphql.generator.tool.csproj             |   2 +-
 .../ArgumentsDefinitionExtensions.cs          |  19 +
 .../Extensions/ArgumentsExtensions.cs         |  18 +
 .../DirectiveDefinitionExtensions.cs          |  15 +
 .../EnumValueDefinitionExtensions.cs          |  43 ++
 .../Extensions/FieldDefinitionExtension.cs    | 149 ++--
 .../InterfaceDefinitionExtensions.cs          |  43 +-
 .../Extensions/ObjectDefinitionExtensions.cs  |  37 +
 .../Extensions/SchemaDefinitionExtensions.cs  | 106 +--
 .../TypeSystemDocumentExtensions.cs           | 174 +++--
 .../Extensions/UnionDefinitionExtensions.cs   |  16 +-
 src/graphql.language/Nodes/Directive.cs       |  50 +-
 src/graphql.language/Nodes/Directives.cs      |  15 +
 src/graphql.language/Nodes/EnumValue.cs       |  59 +-
 src/graphql.language/Nodes/Name.cs            |  12 +-
 src/graphql.language/Nodes/NamedType.cs       |   8 +-
 .../Nodes/TypeSystem/EnumValueDefinition.cs   |   2 +
 .../Nodes/TypeSystem/ImplementsInterfaces.cs  |  15 +
 .../Nodes/TypeSystem/Import.cs                |  42 +-
 .../Nodes/TypeSystem/InputValueDefinition.cs  |  14 +-
 .../Nodes/TypeSystem/ScalarDefinition.cs      |  56 +-
 .../Nodes/TypeSystem/TypeDefinition.cs        |  40 +-
 .../graphql.server.links.csproj               |   2 +-
 src/graphql.server/graphql.server.csproj      |   2 +-
 .../Directives/CreateDirectiveVisitor.cs      |   4 +-
 .../DirectiveFieldVisitorContext.cs           |  36 +-
 .../Directives/DirectiveNodeVisitor.cs        |   9 +-
 src/graphql/Directives/DirectiveVisitor.cs    |   2 +-
 .../Directives/SchemaBuilderExtensions.cs     |  71 --
 src/graphql/Execution/Arguments.cs            |  25 +-
 src/graphql/Execution/FieldErrors.cs          |  14 +-
 src/graphql/Execution/FieldGroups.cs          |  39 +-
 src/graphql/Execution/IExecutionStrategy.cs   |   8 +-
 .../Execution/ParallelExecutionStrategy.cs    |  12 +-
 src/graphql/Execution/Query.cs                |   2 +-
 src/graphql/Execution/SelectionSets.cs        |  86 +--
 .../Execution/SerialExecutionStrategy.cs      |  16 +-
 src/graphql/Execution/TypeIs.cs               | 100 ++-
 src/graphql/Execution/Values.cs               | 121 ++-
 src/graphql/Execution/Variables.cs            |   9 +-
 src/graphql/ExecutionOptions.cs               |   5 +-
 src/graphql/Extensions/Analysis/Cost.cs       |  18 +-
 src/graphql/ExtensionsRunner.cs               |   7 +-
 src/graphql/IResolverMap.cs                   |   9 +-
 src/graphql/ISubscriberMap.cs                 |  11 +-
 src/graphql/Introspection/Introspect.cs       |  13 +-
 .../Introspection/IntrospectionResolvers.cs   | 148 ++--
 .../Introspection/IntrospectionSchema.cs      | 223 +++---
 .../EmbeddedResourceImportProvider.cs         |  34 +-
 .../FileSystemImportProvider.cs               | 104 +--
 src/graphql/Parser.cs                         |  67 --
 src/graphql/ParserOptions.cs                  |  45 +-
 .../{ObjectTypeMap.cs => ResolversMap.cs}     |  24 +-
 src/graphql/SDL/SchemaBuilderExtensions.cs    |  27 -
 src/graphql/SDL/SchemaPrinter.cs              | 493 ------------
 src/graphql/SDL/SchemaReader.cs               | 548 --------------
 .../SDL/TypeDefinitionEnumerableExtensions.cs |  60 --
 src/graphql/SchemaBuilding/ArgsBuilder.cs     |  24 -
 .../SchemaBuilding/ConnectionBuilder.Build.cs |  22 -
 .../ConnectionBuilder.Ensure.cs               |  40 -
 .../SchemaBuilding/ConnectionBuilder.Get.cs   | 103 ---
 .../ConnectionBuilder.Include.cs              | 114 ---
 .../ConnectionBuilder.Remove.cs               |  33 -
 .../SchemaBuilding/ConnectionBuilder.cs       | 149 ----
 .../SchemaBuilding/EnumValuesBuilder.cs       |  25 -
 .../SchemaBuilding/SchemaBuilder.Build.cs     | 105 ---
 .../SchemaBuilding/SchemaBuilder.Get.cs       |  43 --
 .../SchemaBuilding/SchemaBuilder.Import.cs    |  14 -
 .../SchemaBuilding/SchemaBuilder.Include.cs   |  27 -
 .../SchemaBuilding/SchemaBuilder.Remove.cs    |  44 --
 .../SchemaBuilding/SchemaBuilder.Roots.cs     | 107 ---
 src/graphql/SchemaBuilding/SchemaBuilder.cs   | 189 -----
 .../SchemaBuilding/SchemaBuilderException.cs  |  14 -
 .../Tools/MergeSchemaBuilderExtensions.cs     |  14 -
 src/graphql/Tools/MergeTool.cs                | 185 -----
 src/graphql/Tools/SchemaTools.cs              |  82 --
 src/graphql/TypeSystem/Args.cs                |  33 -
 src/graphql/TypeSystem/Argument.cs            |  44 --
 src/graphql/TypeSystem/Ast.cs                 |  63 +-
 src/graphql/TypeSystem/ComplexType.cs         |  32 -
 src/graphql/TypeSystem/DirectiveInstance.cs   |  48 --
 src/graphql/TypeSystem/DirectiveList.cs       |  15 +-
 src/graphql/TypeSystem/DirectiveType.cs       | 149 ----
 src/graphql/TypeSystem/EnumType.cs            | 106 ---
 src/graphql/TypeSystem/EnumValue.cs           |  41 -
 src/graphql/TypeSystem/EnumValues.cs          |  25 -
 src/graphql/TypeSystem/ExecutableSchema.cs    | 171 +++++
 src/graphql/TypeSystem/Field.cs               |  86 ---
 src/graphql/TypeSystem/Fields.cs              |  25 -
 src/graphql/TypeSystem/GraphQLTypeComparer.cs |  36 -
 src/graphql/TypeSystem/IAbstractType.cs       |   7 -
 src/graphql/TypeSystem/IDeprecable.cs         |   9 -
 src/graphql/TypeSystem/IDescribable.cs        |   7 -
 src/graphql/TypeSystem/IField.cs              |  13 -
 src/graphql/TypeSystem/IHasDirectives.cs      |   5 +-
 src/graphql/TypeSystem/INamedType.cs          |   9 -
 src/graphql/TypeSystem/ISchema.cs             |  35 +-
 src/graphql/TypeSystem/IType.cs               |   9 -
 src/graphql/TypeSystem/IWrappingType.cs       |   7 -
 src/graphql/TypeSystem/InputFields.cs         |  32 -
 src/graphql/TypeSystem/InputObjectField.cs    |  45 --
 src/graphql/TypeSystem/InputObjectType.cs     |  37 -
 src/graphql/TypeSystem/InterfaceType.cs       |  22 -
 src/graphql/TypeSystem/List.cs                |  49 --
 src/graphql/TypeSystem/NonNull.cs             |  49 --
 src/graphql/TypeSystem/ObjectType.cs          |  65 --
 src/graphql/TypeSystem/ScalarType.cs          | 138 ----
 src/graphql/TypeSystem/Scalars.cs             |  52 ++
 src/graphql/TypeSystem/SchemaBuildOptions.cs  |  41 +
 src/graphql/TypeSystem/SchemaBuilder.cs       | 502 +++++++++++++
 src/graphql/TypeSystem/SchemaExtensions.cs    |  24 +-
 src/graphql/TypeSystem/SchemaGraph.cs         | 182 -----
 .../TypeSystem/TypeDictionaryExtensions.cs    |   9 +-
 src/graphql/TypeSystem/TypeExtensions.cs      |  19 +-
 src/graphql/TypeSystem/UnionType.cs           |  55 --
 .../ValueSerialization/EnumConverter.cs       |  60 ++
 src/graphql/Validation/ExecutionRules.cs      |  98 +--
 .../FieldSelectionMergingValidator.cs         | 125 ++--
 src/graphql/Validation/IRuleVisitorContext.cs |   2 +-
 src/graphql/Validation/RulesWalker.cs         |   4 +-
 src/graphql/Validation/TypeTracker.cs         | 326 +-------
 src/graphql/Validation/ValidationResult.cs    |  14 +-
 src/graphql/Validation/Validator.cs           |   2 +-
 src/graphql/Validation/VariableUsage.cs       |  17 +-
 src/graphql/ValueCoercionException.cs         |  10 +-
 .../ValueResolution/CompleteValueResult.cs    | 108 +--
 .../ValueResolution/IResolverContext.cs       |  10 +-
 .../ValueResolution/IResolverResult.cs        |   2 +-
 .../NullValueForNonNullException.cs           |   4 +-
 src/graphql/ValueResolution/Resolve.cs        |  18 +-
 src/graphql/ValueResolution/ResolveSync.cs    |  16 +-
 .../ValueResolution/ResolverBuilder.cs        |  13 +-
 .../ValueResolution/ResolverContext.cs        |  17 +-
 .../ResolverContextExtensions.cs              |  11 +-
 .../SchemaBuilderExtensions.cs                |  35 -
 src/graphql/VariableException.cs              |   8 +-
 src/graphql/graphql.csproj                    |  14 +-
 ...L.Extensions.ApolloFederation.Tests.csproj |   2 +-
 ...graphql.generator.integration.tests.csproj |   2 +-
 .../graphql.language.tests.csproj             |   6 +-
 .../graphql.server.links.tests.csproj         |   2 +-
 .../graphql.server.tests.host.csproj          |   2 +-
 .../graphql.server.tests.csproj               |   2 +-
 .../graphql.tests.data.csproj                 |   8 +-
 .../starwars/StarwarsSchema.cs                |   6 +-
 tests/graphql.tests/ExecutionPathFacts.cs     |  40 +-
 tests/graphql.tests/ExecutorFacts.cs          | 354 +++++----
 .../EmbeddedResourceImportProviderFacts.cs    |  84 +--
 .../ImportProviders/FileSystemImportFacts.cs  |  16 +-
 .../FileSystemImportProviderFacts.cs          |  84 +--
 tests/graphql.tests/ParserFacts.cs            |  52 --
 tests/graphql.tests/SDL/GithubSchemaFacts.cs  |  12 +-
 tests/graphql.tests/SDL/SchemaPrinterFacts.cs | 322 --------
 tests/graphql.tests/SDL/SdlFacts.cs           | 688 -----------------
 .../MakeExecutableWithIntrospectionFacts.cs   |  56 --
 .../graphql.tests/Tools/MergeSchemasFacts.cs  | 205 -----
 .../TypeSystem/BooleanTypeFacts.cs            |  86 ---
 .../TypeSystem/DirectiveInstanceFacts.cs      |  66 --
 .../TypeSystem/DirectiveTypeFacts.cs          | 223 ------
 .../graphql.tests/TypeSystem/EnumTypeFacts.cs |  97 ---
 .../TypeSystem/FloatTypeFacts.cs              |  77 --
 tests/graphql.tests/TypeSystem/Gql.cs         |  26 -
 .../TypeSystem/InputObjectTypeFacts.cs        |  69 --
 .../graphql.tests/TypeSystem/IntTypeFacts.cs  |  59 --
 .../TypeSystem/InterfaceTypeFacts.cs          |  55 --
 tests/graphql.tests/TypeSystem/ListFacts.cs   | 269 -------
 .../graphql.tests/TypeSystem/NonNullFacts.cs  |  21 -
 .../TypeSystem/ObjectTypeFacts.cs             |  64 --
 .../TypeSystem/SchemaBuilderFacts.cs          | 706 ------------------
 tests/graphql.tests/TypeSystem/SchemaFacts.cs | 201 -----
 .../TypeSystem/StringTypeFacts.cs             |  65 --
 .../TypeSystem/UnionTypeFacts.cs              |  36 -
 tests/graphql.tests/graphql.tests.csproj      |  68 +-
 .../graphql.tutorials.getting-started.csproj  |   8 +-
 187 files changed, 2801 insertions(+), 9251 deletions(-)
 create mode 100644 src/graphql.language/Extensions/ArgumentsDefinitionExtensions.cs
 create mode 100644 src/graphql.language/Extensions/ArgumentsExtensions.cs
 delete mode 100644 src/graphql/Directives/SchemaBuilderExtensions.cs
 delete mode 100644 src/graphql/Parser.cs
 rename src/graphql/{ObjectTypeMap.cs => ResolversMap.cs} (61%)
 delete mode 100644 src/graphql/SDL/SchemaBuilderExtensions.cs
 delete mode 100644 src/graphql/SDL/SchemaPrinter.cs
 delete mode 100644 src/graphql/SDL/SchemaReader.cs
 delete mode 100644 src/graphql/SDL/TypeDefinitionEnumerableExtensions.cs
 delete mode 100644 src/graphql/SchemaBuilding/ArgsBuilder.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.Build.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.Ensure.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.Get.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.Include.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.Remove.cs
 delete mode 100644 src/graphql/SchemaBuilding/ConnectionBuilder.cs
 delete mode 100644 src/graphql/SchemaBuilding/EnumValuesBuilder.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Build.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Get.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Import.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Include.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Remove.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.Roots.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilder.cs
 delete mode 100644 src/graphql/SchemaBuilding/SchemaBuilderException.cs
 delete mode 100644 src/graphql/Tools/MergeSchemaBuilderExtensions.cs
 delete mode 100644 src/graphql/Tools/MergeTool.cs
 delete mode 100644 src/graphql/Tools/SchemaTools.cs
 delete mode 100644 src/graphql/TypeSystem/Args.cs
 delete mode 100644 src/graphql/TypeSystem/Argument.cs
 delete mode 100644 src/graphql/TypeSystem/ComplexType.cs
 delete mode 100644 src/graphql/TypeSystem/DirectiveInstance.cs
 delete mode 100644 src/graphql/TypeSystem/DirectiveType.cs
 delete mode 100644 src/graphql/TypeSystem/EnumType.cs
 delete mode 100644 src/graphql/TypeSystem/EnumValue.cs
 delete mode 100644 src/graphql/TypeSystem/EnumValues.cs
 create mode 100644 src/graphql/TypeSystem/ExecutableSchema.cs
 delete mode 100644 src/graphql/TypeSystem/Field.cs
 delete mode 100644 src/graphql/TypeSystem/Fields.cs
 delete mode 100644 src/graphql/TypeSystem/GraphQLTypeComparer.cs
 delete mode 100644 src/graphql/TypeSystem/IAbstractType.cs
 delete mode 100644 src/graphql/TypeSystem/IDeprecable.cs
 delete mode 100644 src/graphql/TypeSystem/IDescribable.cs
 delete mode 100644 src/graphql/TypeSystem/IField.cs
 delete mode 100644 src/graphql/TypeSystem/INamedType.cs
 delete mode 100644 src/graphql/TypeSystem/IType.cs
 delete mode 100644 src/graphql/TypeSystem/IWrappingType.cs
 delete mode 100644 src/graphql/TypeSystem/InputFields.cs
 delete mode 100644 src/graphql/TypeSystem/InputObjectField.cs
 delete mode 100644 src/graphql/TypeSystem/InputObjectType.cs
 delete mode 100644 src/graphql/TypeSystem/InterfaceType.cs
 delete mode 100644 src/graphql/TypeSystem/List.cs
 delete mode 100644 src/graphql/TypeSystem/NonNull.cs
 delete mode 100644 src/graphql/TypeSystem/ObjectType.cs
 delete mode 100644 src/graphql/TypeSystem/ScalarType.cs
 create mode 100644 src/graphql/TypeSystem/Scalars.cs
 create mode 100644 src/graphql/TypeSystem/SchemaBuildOptions.cs
 create mode 100644 src/graphql/TypeSystem/SchemaBuilder.cs
 delete mode 100644 src/graphql/TypeSystem/SchemaGraph.cs
 delete mode 100644 src/graphql/TypeSystem/UnionType.cs
 create mode 100644 src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
 delete mode 100644 src/graphql/ValueResolution/SchemaBuilderExtensions.cs
 delete mode 100644 tests/graphql.tests/ParserFacts.cs
 delete mode 100644 tests/graphql.tests/SDL/SchemaPrinterFacts.cs
 delete mode 100644 tests/graphql.tests/SDL/SdlFacts.cs
 delete mode 100644 tests/graphql.tests/Tools/MakeExecutableWithIntrospectionFacts.cs
 delete mode 100644 tests/graphql.tests/Tools/MergeSchemasFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/BooleanTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/DirectiveInstanceFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/DirectiveTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/EnumTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/FloatTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/Gql.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/InputObjectTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/IntTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/InterfaceTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/ListFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/NonNullFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/ObjectTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/SchemaBuilderFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/SchemaFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/StringTypeFacts.cs
 delete mode 100644 tests/graphql.tests/TypeSystem/UnionTypeFacts.cs

diff --git a/Directory.Build.props b/Directory.Build.props
index 58a660476..9360bf092 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>10.0</LangVersion>
     <Copyright>Pekka Heikura</Copyright>
     <PackageProjectUrl>https://github.com/pekkah/tanka-graphql</PackageProjectUrl>
     <RepositoryUrl>https://github.com/pekkah/tanka-graphql</RepositoryUrl>
diff --git a/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs b/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
index 4da093b7d..5c137d81f 100644
--- a/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
@@ -87,7 +87,7 @@ public async Task Query_without_validation()
         [GlobalSetup]
         public void Setup()
         {
-            _schema = Utils.InitializeSchema();
+            _schema = Utils.InitializeSchema().Result;
             _query = Utils.InitializeQuery();
             _mutation = Utils.InitializeMutation();
             _subscription = Utils.InitializeSubscription();
diff --git a/benchmarks/graphql.benchmarks/Utils.cs b/benchmarks/graphql.benchmarks/Utils.cs
index 9ce91ceaf..5fa8a733a 100644
--- a/benchmarks/graphql.benchmarks/Utils.cs
+++ b/benchmarks/graphql.benchmarks/Utils.cs
@@ -1,20 +1,17 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Benchmarks
 {
     public static class Utils
     {
-        public static ISchema InitializeSchema()
+        public static Task<ISchema> InitializeSchema()
         {
             var events = new SingleValueEventChannel();
             var builder = new SchemaBuilder()
-                .Sdl(Parser.ParseTypeSystemDocument(
+                .Add(Parser.ParseTypeSystemDocument(
                 @"
                     type Query {
                         simple: String
@@ -35,7 +32,7 @@ type Subscription {
                     }
                     "));
 
-            var resolvers = new ObjectTypeMap
+            var resolvers = new ResolversMap()
             {
                 {
                     "Query", new FieldResolversMap
@@ -60,12 +57,7 @@ type Subscription {
                 }
             };
 
-            var schema = SchemaTools.MakeExecutableSchema(
-                builder, 
-                resolvers,
-                resolvers);
-
-            return schema;
+            return builder.Build(resolvers, resolvers);
         }
 
         public static ExecutableDocument InitializeQuery()
diff --git a/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs b/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
index de46333da..e011363fa 100644
--- a/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
@@ -26,7 +26,7 @@ public class ValidationBenchmarks
         [GlobalSetup]
         public void Setup()
         {
-            _schema = Utils.InitializeSchema();
+            _schema = Utils.InitializeSchema().Result;
             _query = Utils.InitializeQuery();
             _defaultRulesMap = ExecutionRules.All.ToList();
             _comparisonRules = new List<CombineRule>
diff --git a/benchmarks/graphql.benchmarks/graphql.benchmarks.csproj b/benchmarks/graphql.benchmarks/graphql.benchmarks.csproj
index 0e585ed24..7c618f3a5 100644
--- a/benchmarks/graphql.benchmarks/graphql.benchmarks.csproj
+++ b/benchmarks/graphql.benchmarks/graphql.benchmarks.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <AssemblyName>graphql.benchmarks</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Benchmarks</RootNamespace>
     <IsPackable>false</IsPackable>
diff --git a/dev/GraphQL.Dev.Reviews/GraphQL.Dev.Reviews.csproj b/dev/GraphQL.Dev.Reviews/GraphQL.Dev.Reviews.csproj
index eb16c84d4..99c228e77 100644
--- a/dev/GraphQL.Dev.Reviews/GraphQL.Dev.Reviews.csproj
+++ b/dev/GraphQL.Dev.Reviews/GraphQL.Dev.Reviews.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/dev/graphql.dev.allocations/graphql.dev.allocations.csproj b/dev/graphql.dev.allocations/graphql.dev.allocations.csproj
index 531f56bc5..2b5f0d434 100644
--- a/dev/graphql.dev.allocations/graphql.dev.allocations.csproj
+++ b/dev/graphql.dev.allocations/graphql.dev.allocations.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.dev.allocations</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Dev.Allocations</RootNamespace>
diff --git a/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj b/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
index 39951e853..88cbfa9f2 100644
--- a/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
+++ b/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <AssemblyName>Tanka.GraphQL.Samples.Chat.Data</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Samples.Chat.Data</RootNamespace>
     <IsPackable>false</IsPackable>
diff --git a/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj b/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
index fed25264b..83da3b854 100644
--- a/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
+++ b/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
     <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>
     <IsPackable>false</IsPackable>
diff --git a/run-benchmarks.ps1 b/run-benchmarks.ps1
index 7ed687ad0..26ad06230 100644
--- a/run-benchmarks.ps1
+++ b/run-benchmarks.ps1
@@ -50,7 +50,7 @@ $IsPreRelease = $PreReleaseTag -ne ''
 
 "----------------------------------------"
 "Benchmarks"
-$BechmarkCmd = "dotnet run --project ./benchmarks/graphql.benchmarks/graphql.benchmarks.csproj -c Release --framework net5.0 -- -i -m --filter *execution*"
+$BechmarkCmd = "dotnet run --project ./benchmarks/graphql.benchmarks/graphql.benchmarks.csproj -c Release --framework net6.0 -- -i -m --filter *execution*"
 
 if ($IsPreRelease) {
     $BechmarkCmd += " --job short"
diff --git a/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj b/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
index 7c1059f7c..75e698e34 100644
--- a/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
+++ b/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.1;net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <AssemblyName>Tanka.GraphQL.Extensions.ApolloFederation</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Extensions.ApolloFederation</RootNamespace>
   </PropertyGroup>
diff --git a/src/GraphQL.Extensions.Tracing/GraphQL.Extensions.Tracing.csproj b/src/GraphQL.Extensions.Tracing/GraphQL.Extensions.Tracing.csproj
index 2846f0c03..f3a0d4930 100644
--- a/src/GraphQL.Extensions.Tracing/GraphQL.Extensions.Tracing.csproj
+++ b/src/GraphQL.Extensions.Tracing/GraphQL.Extensions.Tracing.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.1;net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <RootNamespace>Tanka.GraphQL.Extensions.Tracing</RootNamespace>
     <AssemblyName>Tanka.GraphQL.Extensions.Tracing</AssemblyName>
   </PropertyGroup>
diff --git a/src/graphql.generator.core/graphql.generator.core.csproj b/src/graphql.generator.core/graphql.generator.core.csproj
index 12b65979c..5a2b38b3a 100644
--- a/src/graphql.generator.core/graphql.generator.core.csproj
+++ b/src/graphql.generator.core/graphql.generator.core.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <RootNamespace>Tanka.GraphQL.Generator.Core</RootNamespace>
     <AssemblyName>tanka.graphql.generator.core</AssemblyName>
     <IsPackable>false</IsPackable>
diff --git a/src/graphql.generator.tool/graphql.generator.tool.csproj b/src/graphql.generator.tool/graphql.generator.tool.csproj
index 711f823d5..b8bf51d6c 100644
--- a/src/graphql.generator.tool/graphql.generator.tool.csproj
+++ b/src/graphql.generator.tool/graphql.generator.tool.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <RootNamespace>Tanka.GraphQL.Generator.Tool</RootNamespace>
     <AssemblyName>tanka.graphql.generator.tool</AssemblyName>
     <PackAsTool>true</PackAsTool>
diff --git a/src/graphql.language/Extensions/ArgumentsDefinitionExtensions.cs b/src/graphql.language/Extensions/ArgumentsDefinitionExtensions.cs
new file mode 100644
index 000000000..26026a158
--- /dev/null
+++ b/src/graphql.language/Extensions/ArgumentsDefinitionExtensions.cs
@@ -0,0 +1,19 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.Language;
+
+public static class ArgumentsDefinitionExtensions
+{
+    public static bool TryGet(
+        this ArgumentsDefinition arguments,
+        Name argumentName,
+        [NotNullWhen(true)] out InputValueDefinition? argument)
+    {
+        argument = arguments.SingleOrDefault(a => a.Name == argumentName);
+
+        return argument is not null;
+    }
+}
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ArgumentsExtensions.cs b/src/graphql.language/Extensions/ArgumentsExtensions.cs
new file mode 100644
index 000000000..59d9f0cc7
--- /dev/null
+++ b/src/graphql.language/Extensions/ArgumentsExtensions.cs
@@ -0,0 +1,18 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+
+namespace Tanka.GraphQL.Language;
+
+public static class ArgumentsExtensions
+{
+    public static bool TryGet(
+        this Arguments arguments,
+        Name argumentName,
+        [NotNullWhen(true)] out Argument? argument)
+    {
+        argument = arguments.SingleOrDefault(a => a.Name == argumentName);
+
+        return argument is not null;
+    }
+}
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs b/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
index 9152eea33..058defc01 100644
--- a/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -6,6 +7,20 @@ namespace Tanka.GraphQL.Language
 {
     public static class DirectiveDefinitionExtensions
     {
+        public static bool TryGetArgument(
+            this DirectiveDefinition definition,
+            Name argumentName,
+            [NotNullWhen(true)]out InputValueDefinition? argument)
+        {
+            if (definition.Arguments is null)
+            {
+                argument = null;
+                return false;
+            }
+
+            return definition.Arguments.TryGet(argumentName, out argument);
+        }
+
         public static DirectiveDefinition WithDescription(this DirectiveDefinition definition,
             in StringValue? description)
         {
diff --git a/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs b/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
index 3747c4dfa..f820d3a88 100644
--- a/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -6,6 +7,48 @@ namespace Tanka.GraphQL.Language
 {
     public static class EnumValueDefinitionExtensions
     {
+        public static bool IsDeprecated(
+            this EnumValueDefinition definition,
+            out string? reason)
+        {
+            if (definition.Directives is null)
+            {
+                reason = null;
+                return false;
+            }
+
+            if (definition.TryGetDirective("deprecated", out var directive))
+            {
+                if (directive.Arguments?.TryGet("reason", out var reasonArg) == true && reasonArg.Value is StringValue stringValue)
+                {
+                    reason = stringValue;
+                }
+                else
+                {
+                    reason = null;
+                }
+
+                return true;
+            }
+
+            reason = null;
+            return false;
+        }
+
+        public static bool TryGetDirective(
+            this EnumValueDefinition definition,
+            Name directiveName,
+            [NotNullWhen(true)] out Directive? directive)
+        {
+            if (definition.Directives is null)
+            {
+                directive = null;
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out directive);
+        }
+
         public static EnumValueDefinition WithDescription(this EnumValueDefinition definition,
             in StringValue? description)
         {
diff --git a/src/graphql.language/Extensions/FieldDefinitionExtension.cs b/src/graphql.language/Extensions/FieldDefinitionExtension.cs
index 65c693fa6..d4b18e909 100644
--- a/src/graphql.language/Extensions/FieldDefinitionExtension.cs
+++ b/src/graphql.language/Extensions/FieldDefinitionExtension.cs
@@ -1,66 +1,123 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class FieldDefinitionExtension
 {
-    public static class FieldDefinitionExtension
+    public static bool TryGetArgument(
+        this FieldDefinition definition,
+        Name argumentName,
+        [NotNullWhen(true)]out InputValueDefinition? argument)
     {
-        public static FieldDefinition WithDescription(this FieldDefinition definition, in StringValue description)
+        if (definition.Arguments is null)
         {
-            return new FieldDefinition(
-                description,
-                definition.Name,
-                definition.Arguments,
-                definition.Type,
-                definition.Directives,
-                definition.Location);
+            argument = null;
+            return false;
         }
 
-        public static FieldDefinition WithName(this FieldDefinition definition, in Name name)
-        {
-            return new FieldDefinition(
-                definition.Description,
-                name,
-                definition.Arguments,
-                definition.Type,
-                definition.Directives,
-                definition.Location);
-        }
+        return definition.Arguments.TryGet(argumentName, out argument);
+    }
 
-        public static FieldDefinition WithArguments(this FieldDefinition definition,
-            IReadOnlyList<InputValueDefinition>? arguments)
+    public static bool IsDeprecated(
+        this FieldDefinition definition,
+        out string? reason)
+    {
+        if (definition.Directives is null)
         {
-            return new FieldDefinition(
-                definition.Description,
-                definition.Name,
-                ArgumentsDefinition.From(arguments), 
-                definition.Type,
-                definition.Directives,
-                definition.Location);
+            reason = null;
+            return false;
         }
 
-        public static FieldDefinition WithType(this FieldDefinition definition, TypeBase type)
+        if (definition.TryGetDirective("deprecated", out var directive))
         {
-            return new FieldDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Arguments,
-                type,
-                definition.Directives,
-                definition.Location);
+            if (directive.Arguments?.TryGet("reason", out var reasonArg) == true && reasonArg.Value is StringValue stringValue)
+            {
+                reason = stringValue;
+            }
+            else
+            {
+                reason = null;
+            }
+
+            return true;
         }
 
-        public static FieldDefinition WithDirectives(this FieldDefinition definition,
-            IReadOnlyList<Directive>? directives)
+        reason = null;
+        return false;
+    }
+
+
+    public static bool TryGetDirective(
+        this FieldDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
+    {
+        if (definition.Directives is null)
         {
-            return new FieldDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Arguments,
-                definition.Type,
-                Directives.From(directives),
-                definition.Location);
+            directive = null;
+            return false;
         }
+
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
+
+    public static FieldDefinition WithDescription(this FieldDefinition definition, in StringValue description)
+    {
+        return new FieldDefinition(
+            description,
+            definition.Name,
+            definition.Arguments,
+            definition.Type,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static FieldDefinition WithName(this FieldDefinition definition, in Name name)
+    {
+        return new FieldDefinition(
+            definition.Description,
+            name,
+            definition.Arguments,
+            definition.Type,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static FieldDefinition WithArguments(this FieldDefinition definition,
+        IReadOnlyList<InputValueDefinition>? arguments)
+    {
+        return new FieldDefinition(
+            definition.Description,
+            definition.Name,
+            ArgumentsDefinition.From(arguments),
+            definition.Type,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static FieldDefinition WithType(this FieldDefinition definition, TypeBase type)
+    {
+        return new FieldDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Arguments,
+            type,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static FieldDefinition WithDirectives(this FieldDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new FieldDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Arguments,
+            definition.Type,
+            Directives.From(directives),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
index 6b38b3d17..a4312dfaa 100644
--- a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
@@ -1,4 +1,6 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -6,7 +8,42 @@ namespace Tanka.GraphQL.Language
 {
     public static class InterfaceDefinitionExtensions
     {
-        public static InterfaceDefinition WithDescription(this InterfaceDefinition definition, 
+        public static bool TryGetDirective(
+            this InterfaceDefinition definition,
+            Name directiveName,
+            [NotNullWhen(true)]out Directive? directive)
+        {
+            if (definition.Directives is null)
+            {
+                directive = null;
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out directive);
+        }
+
+        public static bool TryImplements(
+            this InterfaceDefinition definition,
+            Name interfaceName,
+            [NotNullWhen(true)] out NamedType? namedType)
+        {
+            if (definition.Interfaces is null)
+            {
+                namedType = null;
+                return false;
+            }
+
+            return definition.Interfaces.TryGet(interfaceName, out namedType);
+        }
+
+        public static bool Implements(
+            this InterfaceDefinition definition,
+            Name interfaceName)
+        {
+            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
+        }
+
+        public static InterfaceDefinition WithDescription(this InterfaceDefinition definition,
             in StringValue? description)
         {
             return new InterfaceDefinition(
@@ -18,7 +55,7 @@ public static InterfaceDefinition WithDescription(this InterfaceDefinition defin
                 definition.Location);
         }
 
-        public static InterfaceDefinition WithName(this InterfaceDefinition definition, 
+        public static InterfaceDefinition WithName(this InterfaceDefinition definition,
             in Name name)
         {
             return new InterfaceDefinition(
@@ -49,7 +86,7 @@ public static InterfaceDefinition WithDirectives(this InterfaceDefinition defini
                 definition.Description,
                 definition.Name,
                 definition.Interfaces,
-                Directives.From(directives), 
+                Directives.From(directives),
                 definition.Fields,
                 definition.Location);
         }
diff --git a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
index 2831f5461..0d9da8b50 100644
--- a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
@@ -1,4 +1,6 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -6,6 +8,41 @@ namespace Tanka.GraphQL.Language
 {
     public static class ObjectDefinitionExtensions
     {
+        public static bool TryImplements(
+            this ObjectDefinition definition,
+            Name interfaceName,
+            [NotNullWhen(true)]out NamedType? namedType)
+        {
+            if (definition.Interfaces is null)
+            {
+                namedType = null;
+                return false;
+            }
+
+            return definition.Interfaces.TryGet(interfaceName, out namedType);
+        }
+
+        public static bool HasInterface(
+            this ObjectDefinition definition,
+            Name interfaceName)
+        {
+            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
+        }
+
+        public static bool TryGetDirective(
+            this ObjectDefinition definition,
+            Name directiveName,
+            [NotNullWhen(true)]out Directive? directive)
+        {
+            if (definition.Directives is null)
+            {
+                directive = null;
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out directive);
+        }
+
         public static ObjectDefinition WithDescription(this ObjectDefinition definition, 
             in StringValue? description)
         {
diff --git a/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs b/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
index 01aad4ad0..58edfb4bd 100644
--- a/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/SchemaDefinitionExtensions.cs
@@ -1,59 +1,73 @@
 using System.Collections.Generic;
-using System.Xml.Serialization;
+using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class SchemaDefinitionExtensions
 {
-    public static class SchemaDefinitionExtensions
+    public static bool TryGetDirective(
+        this SchemaDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
     {
-        public static SchemaDefinition WithDescription(this SchemaDefinition definition, 
-            in StringValue? description)
-        {
-            return new SchemaDefinition(
-                description,
-                definition.Directives,
-                definition.Operations,
-                definition.Location);
-        }
-        public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
-            Directives? directives)
+        if (definition.Directives is null)
         {
-            return new SchemaDefinition(
-                definition.Description,
-                directives,
-                definition.Operations,
-                definition.Location);
+            directive = null;
+            return false;
         }
 
-        public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new SchemaDefinition(
-                definition.Description,
-                Directives.From(directives), 
-                definition.Operations,
-                definition.Location);
-        }
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
 
-        public static SchemaDefinition WithOperations(this SchemaDefinition definition,
-            RootOperationTypeDefinitions operations)
-        {
-            return new SchemaDefinition(
-                definition.Description,
-                definition.Directives,
-                operations,
-                definition.Location);
-        }
+    public static SchemaDefinition WithDescription(this SchemaDefinition definition,
+        in StringValue? description)
+    {
+        return new SchemaDefinition(
+            description,
+            definition.Directives,
+            definition.Operations,
+            definition.Location);
+    }
 
-        public static SchemaDefinition WithOperations(this SchemaDefinition definition,
-            IReadOnlyList<RootOperationTypeDefinition> operations)
-        {
-            return new SchemaDefinition(
-                definition.Description,
-                definition.Directives,
-                RootOperationTypeDefinitions.From(operations),
-                definition.Location);
-        }
+    public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
+        Directives? directives)
+    {
+        return new SchemaDefinition(
+            definition.Description,
+            directives,
+            definition.Operations,
+            definition.Location);
+    }
+
+    public static SchemaDefinition WithDirectives(this SchemaDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new SchemaDefinition(
+            definition.Description,
+            Directives.From(directives),
+            definition.Operations,
+            definition.Location);
+    }
+
+    public static SchemaDefinition WithOperations(this SchemaDefinition definition,
+        RootOperationTypeDefinitions operations)
+    {
+        return new SchemaDefinition(
+            definition.Description,
+            definition.Directives,
+            operations,
+            definition.Location);
+    }
+
+    public static SchemaDefinition WithOperations(this SchemaDefinition definition,
+        IReadOnlyList<RootOperationTypeDefinition> operations)
+    {
+        return new SchemaDefinition(
+            definition.Description,
+            definition.Directives,
+            RootOperationTypeDefinitions.From(operations),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs b/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
index 9072cf13f..fa501611f 100644
--- a/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
+++ b/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
@@ -3,94 +3,106 @@
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class TypeSystemDocumentExtensions
 {
-    public static class TypeSystemDocumentExtensions
+    public static TypeSystemDocument WithMerged(this TypeSystemDocument left, TypeSystemDocument right)
     {
-        public static TypeSystemDocument Merge(this TypeSystemDocument left, TypeSystemDocument right)
-        {
-            var schemaDefinitions = left.SchemaDefinitions ?? Array.Empty<SchemaDefinition>();
-            var typeDefinitions = left.TypeDefinitions ?? Array.Empty<TypeDefinition>();
-            var directiveDefinitions = left.DirectiveDefinitions ?? Array.Empty<DirectiveDefinition>();
-            var schemaExtensions = left.SchemaExtensions ?? Array.Empty<SchemaExtension>();
-            var typeExtensions = left.TypeExtensions ?? Array.Empty<TypeExtension>();
-            var imports = left.Imports ?? Array.Empty<Import>();
+        var schemaDefinitions = left.SchemaDefinitions ?? Array.Empty<SchemaDefinition>();
+        var typeDefinitions = left.TypeDefinitions ?? Array.Empty<TypeDefinition>();
+        var directiveDefinitions = left.DirectiveDefinitions ?? Array.Empty<DirectiveDefinition>();
+        var schemaExtensions = left.SchemaExtensions ?? Array.Empty<SchemaExtension>();
+        var typeExtensions = left.TypeExtensions ?? Array.Empty<TypeExtension>();
+        var imports = left.Imports ?? Array.Empty<Import>();
 
-            return new TypeSystemDocument(
-                right.SchemaDefinitions != null
-                    ? schemaDefinitions.Concat(right.SchemaDefinitions).ToList()
-                    : schemaDefinitions,
-                right.TypeDefinitions != null
-                    ? typeDefinitions.Concat(right.TypeDefinitions).ToList()
-                    : typeDefinitions,
-                right.DirectiveDefinitions != null
-                    ? directiveDefinitions.Concat(right.DirectiveDefinitions).ToList()
-                    : directiveDefinitions,
-                right.SchemaExtensions != null
-                    ? schemaExtensions.Concat(right.SchemaExtensions).ToList()
-                    : schemaExtensions,
-                right.TypeExtensions != null
-                    ? typeExtensions.Concat(right.TypeExtensions).ToList()
-                    : typeExtensions,
-                right.Imports != null
-                    ? imports.Concat(right.Imports).ToList()
-                    : imports
-            );
-        }
+        return new TypeSystemDocument(
+            right.SchemaDefinitions != null
+                ? schemaDefinitions.Concat(right.SchemaDefinitions).ToList()
+                : schemaDefinitions,
+            right.TypeDefinitions != null
+                ? typeDefinitions.Concat(right.TypeDefinitions).ToList()
+                : typeDefinitions,
+            right.DirectiveDefinitions != null
+                ? directiveDefinitions.Concat(right.DirectiveDefinitions).ToList()
+                : directiveDefinitions,
+            right.SchemaExtensions != null
+                ? schemaExtensions.Concat(right.SchemaExtensions).ToList()
+                : schemaExtensions,
+            right.TypeExtensions != null
+                ? typeExtensions.Concat(right.TypeExtensions).ToList()
+                : typeExtensions,
+            right.Imports != null
+                ? imports.Concat(right.Imports).ToList()
+                : imports
+        );
+    }
 
-        public static TypeSystemDocument WithDirectiveDefinitions(
-            this TypeSystemDocument document, IReadOnlyList<DirectiveDefinition>? definitions)
-        {
-            return new TypeSystemDocument(
-                document.SchemaDefinitions,
-                document.TypeDefinitions,
-                definitions,
-                document.SchemaExtensions,
-                document.TypeExtensions);
-        }
+    public static TypeSystemDocument WithImports(
+        this TypeSystemDocument document, 
+        IReadOnlyList<Import>? definitions)
+    {
+        return new TypeSystemDocument(
+            document.SchemaDefinitions,
+            document.TypeDefinitions,
+            document.DirectiveDefinitions,
+            document.SchemaExtensions,
+            document.TypeExtensions,
+            definitions);
+    }
+
+    public static TypeSystemDocument WithDirectiveDefinitions(
+        this TypeSystemDocument document, IReadOnlyList<DirectiveDefinition>? definitions)
+    {
+        return new TypeSystemDocument(
+            document.SchemaDefinitions,
+            document.TypeDefinitions,
+            definitions,
+            document.SchemaExtensions,
+            document.TypeExtensions);
+    }
 
-        public static TypeSystemDocument WithSchemaDefinitions(
-            this TypeSystemDocument document, IReadOnlyList<SchemaDefinition>? definitions)
-        {
-            return new TypeSystemDocument(
-                definitions,
-                document.TypeDefinitions,
-                document.DirectiveDefinitions,
-                document.SchemaExtensions,
-                document.TypeExtensions);
-        }
+    public static TypeSystemDocument WithSchemaDefinitions(
+        this TypeSystemDocument document, IReadOnlyList<SchemaDefinition>? definitions)
+    {
+        return new TypeSystemDocument(
+            definitions,
+            document.TypeDefinitions,
+            document.DirectiveDefinitions,
+            document.SchemaExtensions,
+            document.TypeExtensions);
+    }
 
-        public static TypeSystemDocument WithSchemaExtensions(
-            this TypeSystemDocument document, IReadOnlyList<SchemaExtension>? definitions)
-        {
-            return new TypeSystemDocument(
-                document.SchemaDefinitions,
-                document.TypeDefinitions,
-                document.DirectiveDefinitions,
-                definitions,
-                document.TypeExtensions);
-        }
+    public static TypeSystemDocument WithSchemaExtensions(
+        this TypeSystemDocument document, IReadOnlyList<SchemaExtension>? definitions)
+    {
+        return new TypeSystemDocument(
+            document.SchemaDefinitions,
+            document.TypeDefinitions,
+            document.DirectiveDefinitions,
+            definitions,
+            document.TypeExtensions);
+    }
 
-        public static TypeSystemDocument WithTypeDefinitions(
-            this TypeSystemDocument document, IReadOnlyList<TypeDefinition>? definitions)
-        {
-            return new TypeSystemDocument(
-                document.SchemaDefinitions,
-                definitions,
-                document.DirectiveDefinitions,
-                document.SchemaExtensions,
-                document.TypeExtensions);
-        }
+    public static TypeSystemDocument WithTypeDefinitions(
+        this TypeSystemDocument document, IReadOnlyList<TypeDefinition>? definitions)
+    {
+        return new TypeSystemDocument(
+            document.SchemaDefinitions,
+            definitions,
+            document.DirectiveDefinitions,
+            document.SchemaExtensions,
+            document.TypeExtensions);
+    }
 
-        public static TypeSystemDocument WithTypeExtensions(
-            this TypeSystemDocument document, IReadOnlyList<TypeExtension>? definitions)
-        {
-            return new TypeSystemDocument(
-                document.SchemaDefinitions,
-                document.TypeDefinitions,
-                document.DirectiveDefinitions,
-                document.SchemaExtensions,
-                definitions);
-        }
+    public static TypeSystemDocument WithTypeExtensions(
+        this TypeSystemDocument document, IReadOnlyList<TypeExtension>? definitions)
+    {
+        return new TypeSystemDocument(
+            document.SchemaDefinitions,
+            document.TypeDefinitions,
+            document.DirectiveDefinitions,
+            document.SchemaExtensions,
+            definitions);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
index c6b9049dc..c633a10ae 100644
--- a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
@@ -6,10 +7,17 @@ namespace Tanka.GraphQL.Language
 {
     public static class UnionDefinitionExtensions
     {
+        public static bool HasMember(
+            this UnionDefinition definition,
+            Name name)
+        {
+            return definition.Members?.Any(m => m.Name == name) == true;
+        }
+
         public static UnionDefinition WithDescription(this UnionDefinition definition,
             in StringValue? description)
         {
-            return new(
+            return new UnionDefinition(
                 description,
                 definition.Name,
                 definition.Directives,
@@ -20,7 +28,7 @@ public static UnionDefinition WithDescription(this UnionDefinition definition,
         public static UnionDefinition WithName(this UnionDefinition definition,
             in Name name)
         {
-            return new(
+            return new UnionDefinition(
                 definition.Description,
                 name,
                 definition.Directives,
@@ -31,7 +39,7 @@ public static UnionDefinition WithName(this UnionDefinition definition,
         public static UnionDefinition WithDirectives(this UnionDefinition definition,
             IReadOnlyList<Directive>? directives)
         {
-            return new(
+            return new UnionDefinition(
                 definition.Description,
                 definition.Name,
                 Directives.From(directives),
@@ -42,7 +50,7 @@ public static UnionDefinition WithDirectives(this UnionDefinition definition,
         public static UnionDefinition WithMembers(this UnionDefinition definition,
             IReadOnlyList<NamedType>? members)
         {
-            return new(
+            return new UnionDefinition(
                 definition.Description,
                 definition.Name,
                 definition.Directives,
diff --git a/src/graphql.language/Nodes/Directive.cs b/src/graphql.language/Nodes/Directive.cs
index 0f932b616..056801aa2 100644
--- a/src/graphql.language/Nodes/Directive.cs
+++ b/src/graphql.language/Nodes/Directive.cs
@@ -1,35 +1,35 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class Directive : INode
 {
-    public sealed class Directive: INode
+    public readonly Arguments? Arguments;
+    public readonly Name Name;
+
+    public Directive(
+        in Name name,
+        Arguments? arguments,
+        in Location? location = default)
     {
-        public NodeKind Kind => NodeKind.Directive;
-        public readonly Arguments? Arguments;
-        public Location? Location {get;}
-        public readonly Name Name;
+        Name = name;
+        Arguments = arguments;
+        Location = location;
+    }
 
-        public Directive(
-            in Name name,
-            Arguments? arguments,
-            in Location? location = default)
-        {
-            Name = name;
-            Arguments = arguments;
-            Location = location;
-        }
+    public NodeKind Kind => NodeKind.Directive;
+    public Location? Location { get; }
 
-        public static implicit operator Directive(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseDirective(true);
-        }
+    public static implicit operator Directive(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseDirective(true);
+    }
 
-        public static implicit operator Directive(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseDirective(true);
-        }
+    public static implicit operator Directive(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseDirective(true);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Directives.cs b/src/graphql.language/Nodes/Directives.cs
index 43fa0ee38..d4a7a807f 100644
--- a/src/graphql.language/Nodes/Directives.cs
+++ b/src/graphql.language/Nodes/Directives.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Tanka.GraphQL.Language.Nodes
 {
@@ -24,5 +25,19 @@ public Directives(
 
             return new Directives(directives);
         }
+
+        public bool TryGet(Name directiveName, [NotNullWhen(true)] out Directive? directive)
+        {
+            foreach (var directiveThis in this)
+            {
+                if (directiveThis.Name != directiveName) continue;
+                
+                directive = directiveThis;
+                return true;
+            }
+
+            directive = null;
+            return false;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/EnumValue.cs b/src/graphql.language/Nodes/EnumValue.cs
index 17715b619..2b7510398 100644
--- a/src/graphql.language/Nodes/EnumValue.cs
+++ b/src/graphql.language/Nodes/EnumValue.cs
@@ -1,6 +1,10 @@
-namespace Tanka.GraphQL.Language.Nodes
+using System;
+using System.Diagnostics;
+
+namespace Tanka.GraphQL.Language.Nodes
 {
-    public sealed class EnumValue : ValueBase, INode
+    [DebuggerDisplay("{Name}")]
+    public sealed class EnumValue : ValueBase, INode, IEquatable<EnumValue>, IEquatable<string>
     {
         public override NodeKind Kind => NodeKind.EnumValue;
         public override Location? Location {get;}
@@ -13,5 +17,56 @@ public EnumValue(
             Name = name;
             Location = location;
         }
+
+        public override int GetHashCode()
+        {
+            return Name.GetHashCode();
+        }
+
+        public static bool operator ==(EnumValue? left, EnumValue? right)
+        {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(EnumValue? left, EnumValue? right)
+        {
+            return !Equals(left, right);
+        }
+
+        public bool Equals(EnumValue? other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Name.Equals(other.Name);
+        }
+
+        public bool Equals(string? other)
+        {
+            return Name.Equals(other);
+        }
+
+        public bool Equals(Enum systemEnum)
+        {
+            var enumName = Enum.GetName(systemEnum.GetType(), systemEnum);
+
+            return Equals(enumName);
+        }
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(this, obj))
+                return true;
+
+            if (obj is EnumValue otherValue && Equals(otherValue))
+                return true;
+
+            if (obj is string otherStr && Equals(otherStr))
+                return true;
+
+            if (obj is Enum otherEnum && Equals(otherEnum))
+                return true;
+
+            return false;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Name.cs b/src/graphql.language/Nodes/Name.cs
index beaeb4073..41333efd2 100644
--- a/src/graphql.language/Nodes/Name.cs
+++ b/src/graphql.language/Nodes/Name.cs
@@ -2,7 +2,7 @@
 
 namespace Tanka.GraphQL.Language.Nodes
 {
-    public readonly struct Name : IEquatable<Name>
+    public readonly struct Name : IEquatable<Name>, IEquatable<string>
     {
         public Location? Location { get; }
 
@@ -37,7 +37,7 @@ public bool Equals(Name other)
             return Value == other.Value;
         }
 
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return obj is Name other && Equals(other);
         }
@@ -56,5 +56,13 @@ public override int GetHashCode()
         {
             return !left.Equals(right);
         }
+
+        public bool Equals(string? other)
+        {
+            if (other is null)
+                return false;
+
+            return Value == other;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/NamedType.cs b/src/graphql.language/Nodes/NamedType.cs
index 77a5a1611..457a36bd9 100644
--- a/src/graphql.language/Nodes/NamedType.cs
+++ b/src/graphql.language/Nodes/NamedType.cs
@@ -1,12 +1,9 @@
-using System;
-using System.Text;
+using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes
 {
     public sealed class NamedType : TypeBase
     {
-        public override NodeKind Kind => NodeKind.NamedType;
-        public override Location? Location {get;}
         public readonly Name Name;
 
         public NamedType(
@@ -17,6 +14,9 @@ public NamedType(
             Location = location;
         }
 
+        public override NodeKind Kind => NodeKind.NamedType;
+        public override Location? Location { get; }
+
         public static implicit operator NamedType(string value)
         {
             var parser = new Parser(Encoding.UTF8.GetBytes(value));
diff --git a/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs b/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
index 5a7ae0e7a..4a5090b97 100644
--- a/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
@@ -1,8 +1,10 @@
 using System;
+using System.Diagnostics;
 using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
 {
+    [DebuggerDisplay("{Value}")]
     public sealed class EnumValueDefinition : INode
     {
         public EnumValueDefinition(
diff --git a/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs b/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
index 803f49013..5a33a8311 100644
--- a/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
 {
@@ -17,5 +18,19 @@ public ImplementsInterfaces(IReadOnlyList<NamedType> items, in Location? locatio
 
             return new ImplementsInterfaces(interfaces);
         }
+
+        public bool TryGet(Name interfaceName, [NotNullWhen(true)] out NamedType? namedType)
+        {
+            foreach (var @interface in this)
+            {
+                if (@interface.Name != interfaceName) continue;
+                
+                namedType = @interface;
+                return true;
+            }
+
+            namedType = null;
+            return false;
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/Import.cs b/src/graphql.language/Nodes/TypeSystem/Import.cs
index 5586865d3..73c949d0c 100644
--- a/src/graphql.language/Nodes/TypeSystem/Import.cs
+++ b/src/graphql.language/Nodes/TypeSystem/Import.cs
@@ -1,23 +1,35 @@
 using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+[DebuggerDisplay("{ToString(),nq}")]
+public sealed class Import : INode
 {
-    public sealed class Import : INode
+    public Import(
+        IReadOnlyList<Name>? types,
+        StringValue from,
+        in Location? location = default)
+    {
+        Types = types;
+        From = from;
+        Location = location;
+    }
+
+    public StringValue From { get; }
+    public IReadOnlyList<Name>? Types { get; }
+
+    public NodeKind Kind => NodeKind.TankaImport;
+    public Location? Location { get; }
+
+    public override string ToString()
     {
-        public Import(
-            IReadOnlyList<Name>? types,
-            StringValue from,
-            in Location? location)
-        {
-            Types = types;
-            From = from;
-            Location = location;
-        }
+        var types = string.Empty;
 
-        public StringValue From { get; }
+        if (Types is not null)
+            types = $" {string.Join(',', Types.Select(t => t.Value))}";
 
-        public NodeKind Kind => NodeKind.TankaImport;
-        public Location? Location { get; }
-        public IReadOnlyList<Name>? Types { get; }
+        return $"tanka_import{types} from \"{From}\"";
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
index 2b768f857..9c344583b 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
@@ -1,13 +1,10 @@
 using System;
-using System.Collections.Generic;
 using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
 {
-    public sealed class InputValueDefinition: INode
+    public sealed class InputValueDefinition : INode
     {
-        public NodeKind Kind => NodeKind.InputValueDefinition;
-        
         public InputValueDefinition(
             StringValue? description,
             in Name name,
@@ -24,15 +21,16 @@ public InputValueDefinition(
             Location = location;
         }
 
+        public DefaultValue? DefaultValue { get; }
+
         public StringValue? Description { get; }
 
+        public Directives? Directives { get; }
+
         public Name Name { get; }
 
         public TypeBase Type { get; }
-
-        public DefaultValue? DefaultValue { get; }
-
-        public Directives? Directives { get; }
+        public NodeKind Kind => NodeKind.InputValueDefinition;
 
         public Location? Location { get; }
 
diff --git a/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
index fddea1dad..e4f8b2558 100644
--- a/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
@@ -1,39 +1,37 @@
 using System;
-using System.Collections.Generic;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class ScalarDefinition : TypeDefinition
 {
-    public sealed class ScalarDefinition : TypeDefinition
+    public ScalarDefinition(
+        StringValue? description,
+        in Name name,
+        Directives? directives = default,
+        in Location? location = default)
     {
-        public override NodeKind Kind => NodeKind.ScalarDefinition;
-        public ScalarDefinition(
-            StringValue? description,
-            in Name name,
-            Directives? directives,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Directives = directives;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Directives = directives;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public override Name Name { get; }
-        public Directives? Directives { get; }
-        public override Location? Location { get; }
+    public StringValue? Description { get; }
+    public Directives? Directives { get; }
+    public override NodeKind Kind => NodeKind.ScalarDefinition;
+    public override Location? Location { get; }
+    public override Name Name { get; }
 
-        public static implicit operator ScalarDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseScalarDefinition();
-        }
+    public static implicit operator ScalarDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseScalarDefinition();
+    }
 
-        public static implicit operator ScalarDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseScalarDefinition();
-        }
+    public static implicit operator ScalarDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseScalarDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
index 096d9254d..6d7e19d7c 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
@@ -1,12 +1,15 @@
 using System;
-using System.Collections;
-using System.Collections.Generic;
 using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
 {
-    public abstract class TypeDefinition: INode
+    public abstract class TypeDefinition : INode, IEquatable<TypeDefinition>
     {
+        public abstract Name Name { get; }
+
+        public abstract NodeKind Kind { get; }
+        public abstract Location? Location { get; }
+
         public static implicit operator TypeDefinition(string value)
         {
             var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
@@ -18,9 +21,32 @@ public static implicit operator TypeDefinition(in ReadOnlySpan<byte> value)
             var parser = Parser.Create(value);
             return parser.ParseTypeDefinition();
         }
-        
-        public abstract NodeKind Kind { get; }
-        public abstract Location? Location { get; }
-        public abstract Name Name { get; }
+
+        public bool Equals(TypeDefinition? other)
+        {
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Name.Equals(other.Name) && Kind == other.Kind;
+        }
+
+        public override bool Equals(object? obj)
+        {
+            return ReferenceEquals(this, obj) || obj is TypeDefinition other && Equals(other);
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(Name, (int)Kind);
+        }
+
+        public static bool operator ==(TypeDefinition? left, TypeDefinition? right)
+        {
+            return Equals(left, right);
+        }
+
+        public static bool operator !=(TypeDefinition? left, TypeDefinition? right)
+        {
+            return !Equals(left, right);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/graphql.server.links.csproj b/src/graphql.server.links/graphql.server.links.csproj
index aec2456b0..39bf6e089 100644
--- a/src/graphql.server.links/graphql.server.links.csproj
+++ b/src/graphql.server.links/graphql.server.links.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <AssemblyName>tanka.graphql.server.links</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Server.Links</RootNamespace>
   </PropertyGroup>
diff --git a/src/graphql.server/graphql.server.csproj b/src/graphql.server/graphql.server.csproj
index 2c7caf12d..66f0e457e 100644
--- a/src/graphql.server/graphql.server.csproj
+++ b/src/graphql.server/graphql.server.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <AssemblyName>tanka.graphql.server</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Server</RootNamespace>
   </PropertyGroup>
diff --git a/src/graphql/Directives/CreateDirectiveVisitor.cs b/src/graphql/Directives/CreateDirectiveVisitor.cs
index 2d5b0fb8d..22917f6d8 100644
--- a/src/graphql/Directives/CreateDirectiveVisitor.cs
+++ b/src/graphql/Directives/CreateDirectiveVisitor.cs
@@ -1,6 +1,4 @@
-using Tanka.GraphQL.SchemaBuilding;
-
-namespace Tanka.GraphQL.Directives
+namespace Tanka.GraphQL.Directives
 {
     public delegate DirectiveVisitor CreateDirectiveVisitor(SchemaBuilder builder);
 }
\ No newline at end of file
diff --git a/src/graphql/Directives/DirectiveFieldVisitorContext.cs b/src/graphql/Directives/DirectiveFieldVisitorContext.cs
index bf2f9d070..43efda3f7 100644
--- a/src/graphql/Directives/DirectiveFieldVisitorContext.cs
+++ b/src/graphql/Directives/DirectiveFieldVisitorContext.cs
@@ -1,23 +1,22 @@
 using System;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Directives
 {
     public class DirectiveFieldVisitorContext: IEquatable<DirectiveFieldVisitorContext>
     {
-        public DirectiveFieldVisitorContext(string name, IField value, Resolver resolver,
+        public DirectiveFieldVisitorContext(
+            FieldDefinition value, 
+            Resolver resolver,
             Subscriber subscriber)
         {
-            Name = name;
             Field = value;
             Resolver = resolver;
             Subscriber = subscriber;
         }
 
-        public string Name { get; }
-
-        public IField Field { get; }
+        public FieldDefinition Field { get; }
 
         public Resolver Resolver { get; }
 
@@ -30,7 +29,7 @@ public DirectiveFieldVisitorContext WithResolver(Action<ResolverBuilder> build)
             var builder = new ResolverBuilder();
             build(builder);
 
-            return new DirectiveFieldVisitorContext(Name,Field, builder.Build(), Subscriber);
+            return new DirectiveFieldVisitorContext(Field, builder.Build(), Subscriber);
         }
 
         public DirectiveFieldVisitorContext WithSubscriber(Action<ResolverBuilder> buildResolver, Action<SubscriberBuilder> buildSubscriber)
@@ -44,42 +43,35 @@ public DirectiveFieldVisitorContext WithSubscriber(Action<ResolverBuilder> build
             var subscriberBuilder = new SubscriberBuilder();
             buildSubscriber(subscriberBuilder);
 
-            return new DirectiveFieldVisitorContext(Name,Field, resolverBuilder.Build(), subscriberBuilder.Build());
+            return new DirectiveFieldVisitorContext(Field, resolverBuilder.Build(), subscriberBuilder.Build());
         }
 
-        public bool Equals(DirectiveFieldVisitorContext other)
+        public bool Equals(DirectiveFieldVisitorContext? other)
         {
             if (ReferenceEquals(null, other)) return false;
             if (ReferenceEquals(this, other)) return true;
-            return string.Equals(Name, other.Name) && Equals(Field, other.Field) && Equals(Resolver, other.Resolver) && Equals(Subscriber, other.Subscriber);
+            return Field.Equals(other.Field) && Resolver.Equals(other.Resolver) && Subscriber.Equals(other.Subscriber);
         }
 
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             if (ReferenceEquals(null, obj)) return false;
             if (ReferenceEquals(this, obj)) return true;
             if (obj.GetType() != this.GetType()) return false;
-            return Equals((DirectiveFieldVisitorContext) obj);
+            return Equals((DirectiveFieldVisitorContext)obj);
         }
 
         public override int GetHashCode()
         {
-            unchecked
-            {
-                var hashCode = (Name != null ? Name.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ (Field != null ? Field.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ (Resolver != null ? Resolver.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ (Subscriber != null ? Subscriber.GetHashCode() : 0);
-                return hashCode;
-            }
+            return HashCode.Combine(Field, Resolver, Subscriber);
         }
 
-        public static bool operator ==(DirectiveFieldVisitorContext left, DirectiveFieldVisitorContext right)
+        public static bool operator ==(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
         {
             return Equals(left, right);
         }
 
-        public static bool operator !=(DirectiveFieldVisitorContext left, DirectiveFieldVisitorContext right)
+        public static bool operator !=(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
         {
             return !Equals(left, right);
         }
diff --git a/src/graphql/Directives/DirectiveNodeVisitor.cs b/src/graphql/Directives/DirectiveNodeVisitor.cs
index 127d84013..21c245de7 100644
--- a/src/graphql/Directives/DirectiveNodeVisitor.cs
+++ b/src/graphql/Directives/DirectiveNodeVisitor.cs
@@ -1,6 +1,5 @@
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Directives
-{
-    public delegate T DirectiveNodeVisitor<T>(DirectiveInstance directive, T node);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.Directives;
+
+public delegate T? DirectiveNodeVisitor<T>(Directive directive, T node);
\ No newline at end of file
diff --git a/src/graphql/Directives/DirectiveVisitor.cs b/src/graphql/Directives/DirectiveVisitor.cs
index 72a1f06ab..ae1c8792c 100644
--- a/src/graphql/Directives/DirectiveVisitor.cs
+++ b/src/graphql/Directives/DirectiveVisitor.cs
@@ -2,6 +2,6 @@
 {
     public class DirectiveVisitor
     {
-        public DirectiveNodeVisitor<DirectiveFieldVisitorContext> FieldDefinition { get; set; }
+        public DirectiveNodeVisitor<DirectiveFieldVisitorContext>? FieldDefinition { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Directives/SchemaBuilderExtensions.cs b/src/graphql/Directives/SchemaBuilderExtensions.cs
deleted file mode 100644
index 0a0457b82..000000000
--- a/src/graphql/Directives/SchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,71 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Directives
-{
-    public static class SchemaBuilderExtensions
-    {
-        public static SchemaBuilder ApplyDirectives(
-            this SchemaBuilder builder,
-            IReadOnlyDictionary<string, CreateDirectiveVisitor> directiveFactories)
-        {
-            if (directiveFactories == null) 
-                throw new ArgumentNullException(nameof(directiveFactories));
-
-            foreach (var (directiveName, visitor) in directiveFactories.Select(d => (d.Key, d.Value(builder))))
-            foreach (var objectType in builder.GetTypes<ObjectType>())
-                builder.Connections(connections =>
-                {
-                    var fields = connections.GetFields(objectType)
-                        .Where(field => field.Value.HasDirective(directiveName))
-                        .ToList();
-
-                    foreach (var field in fields)
-                    {
-                        var directive = field.Value.GetDirective(directiveName);
-
-                        if (visitor.FieldDefinition == null)
-                            continue;
-
-                        var resolver = connections.GetOrAddResolver(objectType, field.Key)?.Build();
-                        var subscriber = connections.GetOrAddSubscriber(objectType, field.Key)?.Build();
-                        var fieldDefinition = new DirectiveFieldVisitorContext(
-                            field.Key,
-                            field.Value,
-                            resolver,
-                            subscriber);
-
-                        var maybeSameField = visitor.FieldDefinition(directive, fieldDefinition);
-
-                        // field not modified
-                        if (maybeSameField == fieldDefinition)
-                            continue;
-
-                        // field removed
-                        if (maybeSameField == null)
-                        {
-                            connections.Remove(objectType, field.Key);
-                            continue;
-                        }
-
-                        // changed so remove and add
-                        connections.Remove(objectType, field.Key);
-                        connections.Include(objectType, new[]
-                        {
-                            new KeyValuePair<string, IField>(maybeSameField.Name, maybeSameField.Field)
-                        });
-                        connections.Include(objectType, maybeSameField.Name,
-                            new ResolverBuilder(maybeSameField.Resolver));
-                        connections.Include(objectType, maybeSameField.Name,
-                            new SubscriberBuilder(maybeSameField.Subscriber));
-                    }
-                });
-
-            return builder;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/Execution/Arguments.cs b/src/graphql/Execution/Arguments.cs
index a9277e7a9..9c96a67c5 100644
--- a/src/graphql/Execution/Arguments.cs
+++ b/src/graphql/Execution/Arguments.cs
@@ -1,8 +1,8 @@
 using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
-using Argument = Tanka.GraphQL.TypeSystem.Argument;
 
 namespace Tanka.GraphQL.Execution
 {
@@ -10,10 +10,10 @@ public static class ArgumentCoercion
     {
         public static object? CoerceArgumentValue(
             ISchema schema,
-            IReadOnlyDictionary<string, object>? coercedVariableValues,
+            IReadOnlyDictionary<string, object?>? coercedVariableValues,
             string argumentName,
-            Argument argumentDefinition,
-            Language.Nodes.Argument argument)
+            InputValueDefinition argumentDefinition,
+            Argument? argument)
         {
             var argumentType = argumentDefinition.Type;
             var defaultValue = argumentDefinition.DefaultValue;
@@ -41,7 +41,7 @@ public static class ArgumentCoercion
                 value = argumentValue;
             }
 
-            if (argumentType is NonNull && (!hasValue || value == null))
+            if (argumentType is NonNullType && (!hasValue || value == null))
                 throw new ValueCoercionException(
                     $"Argument '{argumentName}' is non-null but no value could be coerced",
                     null,
@@ -54,8 +54,7 @@ public static class ArgumentCoercion
                 if (argumentValue is Variable) return value;
 
                 var coercedValue = Values.CoerceValue(
-                    schema.GetInputFields,
-                    schema.GetValueConverter,
+                    schema,
                     value,
                     argumentType);
 
@@ -67,24 +66,24 @@ public static class ArgumentCoercion
 
         public static IReadOnlyDictionary<string, object?> CoerceArgumentValues(
             ISchema schema,
-            ObjectType objectType,
+            ObjectDefinition objectDefinition,
             FieldSelection field,
-            IReadOnlyDictionary<string, object> coercedVariableValues)
+            IReadOnlyDictionary<string, object?> coercedVariableValues)
         {
             var coercedValues = new Dictionary<string, object?>();
 
             var argumentValues = field.Arguments ?? Arguments.None;
             var fieldName = field.Name;
-            var argumentDefinitions = schema.GetField(objectType.Name, fieldName)
+            var argumentDefinitions = schema.GetRequiredField(objectDefinition.Name, fieldName)
                 .Arguments;
 
             if (argumentDefinitions == null)
                 return coercedValues;
 
-            foreach (var argumentDefinitionPair in argumentDefinitions)
+            foreach (var definition in argumentDefinitions)
             {
-                var argumentDefinition = argumentDefinitionPair.Value;
-                Name argumentName = argumentDefinitionPair.Key;
+                var argumentDefinition = definition;
+                Name argumentName = definition.Name;
                 var argument = argumentValues.SingleOrDefault(a => a.Name == argumentName);
                 coercedValues[argumentName] = CoerceArgumentValue(
                     schema,
diff --git a/src/graphql/Execution/FieldErrors.cs b/src/graphql/Execution/FieldErrors.cs
index a2169ce72..3c893023e 100644
--- a/src/graphql/Execution/FieldErrors.cs
+++ b/src/graphql/Execution/FieldErrors.cs
@@ -1,31 +1,29 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Execution
 {
     public static class FieldErrors
     {
-        public static object Handle(
+        public static object? Handle(
             IExecutorContext context,
-            ObjectType objectType,
+            ObjectDefinition objectDefinition,
             string fieldName,
-            IType fieldType,
+            TypeBase fieldType,
             FieldSelection fieldSelection,
             object? completedValue,
             Exception error,
             NodePath path)
         {
-            if (!(error is QueryExecutionException))
-            {
+            if (error is not QueryExecutionException)
                 error = new QueryExecutionException(
                     "",
                     error,
                     path,
                     fieldSelection);
-            }
 
-            if (fieldType is NonNull)
+            if (fieldType is NonNullType)
                 throw error;
 
             context.AddError(error);
diff --git a/src/graphql/Execution/FieldGroups.cs b/src/graphql/Execution/FieldGroups.cs
index 293e149cd..1f349fefd 100644
--- a/src/graphql/Execution/FieldGroups.cs
+++ b/src/graphql/Execution/FieldGroups.cs
@@ -3,19 +3,19 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL.Execution
 {
     public static class FieldGroups
     {
-        public static async Task<object> ExecuteFieldAsync(
+        public static async Task<object?> ExecuteFieldAsync(
             IExecutorContext context,
-            ObjectType objectType,
-            object objectValue,
+            ObjectDefinition objectDefinition,
+            object? objectValue,
             IReadOnlyCollection<FieldSelection> fields,
-            IType fieldType,
+            TypeBase fieldType,
             NodePath path)
         {
             if (fields == null) throw new ArgumentNullException(nameof(fields));
@@ -24,27 +24,30 @@ public static async Task<object> ExecuteFieldAsync(
             var schema = context.Schema;
             var fieldSelection = fields.First();
             var fieldName = fieldSelection.Name;
-            var field = schema.GetField(objectType.Name, fieldName);
+            var field = schema.GetField(objectDefinition.Name, fieldName);
             object? completedValue = null;
 
+            if (field is null)
+                return completedValue;
+
             var argumentValues = ArgumentCoercion.CoerceArgumentValues(
                 schema,
-                objectType,
+                objectDefinition,
                 fieldSelection,
                 context.CoercedVariableValues);
 
             try
             {
-                var resolver = schema.GetResolver(objectType.Name, fieldName);
+                var resolver = schema.GetResolver(objectDefinition.Name, fieldName);
 
                 if (resolver == null)
                     throw new QueryExecutionException(
-                        $"Could not get resolver for {objectType.Name}.{fieldName}",
+                        $"Could not get resolver for {objectDefinition.Name}.{fieldName}",
                         path);
 
                 var resolverContext =
                     new ResolverContext(
-                        objectType,
+                        objectDefinition,
                         objectValue,
                         field,
                         fieldSelection,
@@ -80,7 +83,7 @@ public static async Task<object> ExecuteFieldAsync(
             {
                 return FieldErrors.Handle(
                     context,
-                    objectType,
+                    objectDefinition,
                     fieldName,
                     fieldType,
                     fieldSelection,
@@ -90,10 +93,10 @@ public static async Task<object> ExecuteFieldAsync(
             }
         }
 
-        public static async Task<object> ExecuteFieldGroupAsync(
+        public static async Task<object?> ExecuteFieldGroupAsync(
             IExecutorContext context,
-            ObjectType objectType,
-            object objectValue,
+            ObjectDefinition objectDefinition,
+            object? objectValue,
             KeyValuePair<string, IReadOnlyCollection<FieldSelection>> fieldGroup,
             NodePath path)
         {
@@ -103,20 +106,20 @@ public static async Task<object> ExecuteFieldGroupAsync(
             path.Append(fieldName);
 
             // __typename hack
-            if (fieldName == "__typename") return objectType.Name;
+            if (fieldName == "__typename") return objectDefinition.Name.Value;
 
             var fieldType = schema
-                .GetField(objectType.Name, fieldName)?
+                .GetField(objectDefinition.Name, fieldName)?
                 .Type;
 
             if (fieldType == null)
                 throw new QueryExecutionException(
-                    $"Object '{objectType.Name}' does not have field '{fieldName}'",
+                    $"Object '{objectDefinition.Name}' does not have field '{fieldName}'",
                     path);
 
             var responseValue = await ExecuteFieldAsync(
                 context,
-                objectType,
+                objectDefinition,
                 objectValue,
                 fields,
                 fieldType,
diff --git a/src/graphql/Execution/IExecutionStrategy.cs b/src/graphql/Execution/IExecutionStrategy.cs
index 5e09d558d..9e0577340 100644
--- a/src/graphql/Execution/IExecutionStrategy.cs
+++ b/src/graphql/Execution/IExecutionStrategy.cs
@@ -1,17 +1,17 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Execution
 {
     public interface IExecutionStrategy
     {
-        Task<IDictionary<string, object>> ExecuteGroupedFieldSetAsync(
+        Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
             IExecutorContext context,
             IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectType objectType, 
-            object objectValue, 
+            ObjectDefinition objectDefinition,
+            object? objectValue,
             NodePath path);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/ParallelExecutionStrategy.cs b/src/graphql/Execution/ParallelExecutionStrategy.cs
index 48a23a83f..7bcad6d24 100644
--- a/src/graphql/Execution/ParallelExecutionStrategy.cs
+++ b/src/graphql/Execution/ParallelExecutionStrategy.cs
@@ -2,25 +2,25 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Execution
 {
     public class ParallelExecutionStrategy : IExecutionStrategy
     {
-        public async Task<IDictionary<string, object>> ExecuteGroupedFieldSetAsync(
+        public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
             IExecutorContext context,
             IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectType objectType,
-            object objectValue,
+            ObjectDefinition objectDefinition,
+            object? objectValue,
             NodePath path)
         {
-            var tasks = new Dictionary<string, Task<object>>();
+            var tasks = new Dictionary<string, Task<object?>>();
             foreach (var fieldGroup in groupedFieldSet)
             {
                 var executionTask = FieldGroups.ExecuteFieldGroupAsync(
                     context,
-                    objectType,
+                    objectDefinition,
                     objectValue,
                     //todo: following is dirty
                     new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key,
diff --git a/src/graphql/Execution/Query.cs b/src/graphql/Execution/Query.cs
index 3c20cddae..666e02e5c 100644
--- a/src/graphql/Execution/Query.cs
+++ b/src/graphql/Execution/Query.cs
@@ -21,7 +21,7 @@ public static async Task<ExecutionResult> ExecuteQueryAsync(
             var selectionSet = operation.SelectionSet;
             var executionContext = context.BuildExecutorContext(new ParallelExecutionStrategy());
 
-            IDictionary<string, object> data;
+            IDictionary<string, object?>? data;
 
             try
             {
diff --git a/src/graphql/Execution/SelectionSets.cs b/src/graphql/Execution/SelectionSets.cs
index c1a9419be..a3a3cbb68 100644
--- a/src/graphql/Execution/SelectionSets.cs
+++ b/src/graphql/Execution/SelectionSets.cs
@@ -3,18 +3,17 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
-using static Tanka.GraphQL.TypeSystem.Ast;
-using Argument = Tanka.GraphQL.TypeSystem.Argument;
 
 namespace Tanka.GraphQL.Execution
 {
     public static class SelectionSets
     {
-        public static async Task<IDictionary<string, object>> ExecuteSelectionSetAsync(
+        public static async Task<IDictionary<string, object>?> ExecuteSelectionSetAsync(
             IExecutorContext executorContext,
             SelectionSet selectionSet,
-            ObjectType objectType,
+            ObjectDefinition objectDefinition,
             object objectValue,
             NodePath path)
         {
@@ -25,14 +24,14 @@ public static async Task<IDictionary<string, object>> ExecuteSelectionSetAsync(
             var groupedFieldSet = CollectFields(
                 executorContext.Schema,
                 executorContext.Document,
-                objectType,
+                objectDefinition,
                 selectionSet,
                 executorContext.CoercedVariableValues);
 
             var resultMap = await executorContext.Strategy.ExecuteGroupedFieldSetAsync(
                 executorContext,
                 groupedFieldSet,
-                objectType,
+                objectDefinition,
                 objectValue,
                 path).ConfigureAwait(false);
 
@@ -46,9 +45,9 @@ public static SelectionSet MergeSelectionSets(IReadOnlyCollection<FieldSelection
             foreach (var field in fields)
             {
                 var fieldSelectionSet = field.SelectionSet;
-                if (fieldSelectionSet?.Selections == null || !fieldSelectionSet.Selections.Any()) continue;
+                if (fieldSelectionSet is null || fieldSelectionSet.Count == 0) continue;
 
-                selectionSet.AddRange(fieldSelectionSet.Selections);
+                selectionSet.AddRange(fieldSelectionSet);
             }
 
             return new SelectionSet(selectionSet);
@@ -57,7 +56,7 @@ public static SelectionSet MergeSelectionSets(IReadOnlyCollection<FieldSelection
         public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
             ISchema schema,
             ExecutableDocument document,
-            ObjectType objectType,
+            ObjectDefinition objectDefinition,
             SelectionSet selectionSet,
             IReadOnlyDictionary<string, object?> coercedVariableValues,
             List<string>? visitedFragments = null)
@@ -67,16 +66,16 @@ public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
             var fragments = document.FragmentDefinitions;
 
             var groupedFields = new Dictionary<string, List<FieldSelection>>();
-            foreach (var selection in selectionSet.Selections)
+            foreach (var selection in selectionSet)
             {
                 var directives = GetDirectives(selection).ToList();
 
                 var skipDirective = directives.FirstOrDefault(d => d.Name == "skip"); //todo: skip to constant
-                if (SkipSelection(skipDirective, coercedVariableValues, schema, objectType, selection))
+                if (SkipSelection(skipDirective, coercedVariableValues, schema, objectDefinition, selection))
                     continue;
 
                 var includeDirective = directives.FirstOrDefault(d => d.Name == "include"); //todo: include to constant
-                if (!IncludeSelection(includeDirective, coercedVariableValues, schema, objectType, selection))
+                if (!IncludeSelection(includeDirective, coercedVariableValues, schema, objectDefinition, selection))
                     continue;
 
                 if (selection is FieldSelection fieldSelection)
@@ -102,16 +101,16 @@ public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
                         continue;
 
                     var fragmentTypeAst = fragment.TypeCondition;
-                    var fragmentType = TypeFromAst(schema, fragmentTypeAst);
+                    var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
 
-                    if (!DoesFragmentTypeApply(objectType, fragmentType))
+                    if (!DoesFragmentTypeApply(objectDefinition, fragmentType))
                         continue;
 
                     var fragmentSelectionSet = fragment.SelectionSet;
                     var fragmentGroupedFieldSet = CollectFields(
                         schema,
                         document,
-                        objectType,
+                        objectDefinition,
                         fragmentSelectionSet,
                         coercedVariableValues,
                         visitedFragments);
@@ -130,16 +129,16 @@ public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
                 if (selection is InlineFragment inlineFragment)
                 {
                     var fragmentTypeAst = inlineFragment.TypeCondition;
-                    var fragmentType = TypeFromAst(schema, fragmentTypeAst);
+                    var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
 
-                    if (fragmentType != null && !DoesFragmentTypeApply(objectType, fragmentType))
+                    if (fragmentType != null && !DoesFragmentTypeApply(objectDefinition, fragmentType))
                         continue;
 
                     var fragmentSelectionSet = inlineFragment.SelectionSet;
                     var fragmentGroupedFieldSet = CollectFields(
                         schema,
                         document,
-                        objectType,
+                        objectDefinition,
                         fragmentSelectionSet,
                         coercedVariableValues,
                         visitedFragments);
@@ -159,8 +158,12 @@ public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
             return groupedFields;
         }
 
-        private static bool IncludeSelection(Directive includeDirective,
-            IReadOnlyDictionary<string, object?> coercedVariableValues, ISchema schema, ObjectType objectType, object selection)
+        private static bool IncludeSelection(
+            Directive? includeDirective,
+            IReadOnlyDictionary<string, object?> coercedVariableValues, 
+            ISchema schema,
+            ObjectDefinition objectDefinition, 
+            object selection)
         {
             if (includeDirective?.Arguments == null)
                 return true;
@@ -169,8 +172,12 @@ private static bool IncludeSelection(Directive includeDirective,
             return GetIfArgumentValue(schema, includeDirective, coercedVariableValues, ifArgument);
         }
 
-        private static bool SkipSelection(Directive skipDirective,
-            IReadOnlyDictionary<string, object?> coercedVariableValues, ISchema schema, ObjectType objectType, object selection)
+        private static bool SkipSelection(
+            Directive? skipDirective,
+            IReadOnlyDictionary<string, object?> coercedVariableValues, 
+            ISchema schema,
+            ObjectDefinition objectDefinition, 
+            object selection)
         {
             if (skipDirective?.Arguments == null)
                 return false;
@@ -183,28 +190,12 @@ private static bool GetIfArgumentValue(
             ISchema schema,
             Directive directive,
             IReadOnlyDictionary<string, object?> coercedVariableValues,
-            Language.Nodes.Argument argument)
+            Argument? argument)
         {
-            if (directive == null) throw new ArgumentNullException(nameof(directive));
-            if (coercedVariableValues == null) throw new ArgumentNullException(nameof(coercedVariableValues));
+            if (argument is null)
+                return false;
 
-            switch (argument.Value.Kind)
-            {
-                case NodeKind.BooleanValue:
-                    return (bool) Values.CoerceValue(schema.GetInputFields, schema.GetValueConverter, (BooleanValue)argument.Value, ScalarType.NonNullBoolean);
-                case NodeKind.Variable:
-                    var variable = (Variable) argument.Value;
-                    var variableValue = coercedVariableValues[variable.Name];
-                    
-                    if (variableValue == null)
-                        throw new QueryExecutionException(
-                            $"If argument of {directive} is null. Variable value should not be null",
-                            new NodePath(), argument);
-                    
-                    return (bool) variableValue;
-                default:
-                    return false;
-            }
+            return Ast.GetIfArgumentValue(directive, coercedVariableValues, argument);
         }
 
         private static IEnumerable<Directive> GetDirectives(ISelection selection)
@@ -212,16 +203,9 @@ private static IEnumerable<Directive> GetDirectives(ISelection selection)
             return selection.Directives ?? Language.Nodes.Directives.None;
         }
 
-        private static bool DoesFragmentTypeApply(ObjectType objectType, IType fragmentType)
+        private static bool DoesFragmentTypeApply(ObjectDefinition objectDefinition, TypeDefinition fragmentType)
         {
-            if (fragmentType is ObjectType obj)
-                return string.Equals(obj.Name, objectType.Name, StringComparison.Ordinal);
-
-            if (fragmentType is InterfaceType interfaceType) return objectType.Implements(interfaceType);
-
-            if (fragmentType is UnionType unionType) return unionType.IsPossible(objectType);
-
-            return false;
+            return Ast.DoesFragmentTypeApply(objectDefinition, fragmentType);
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/SerialExecutionStrategy.cs b/src/graphql/Execution/SerialExecutionStrategy.cs
index 35780c710..0321333e6 100644
--- a/src/graphql/Execution/SerialExecutionStrategy.cs
+++ b/src/graphql/Execution/SerialExecutionStrategy.cs
@@ -1,20 +1,20 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Execution
 {
     public class SerialExecutionStrategy : IExecutionStrategy
     {
-        public async Task<IDictionary<string, object>> ExecuteGroupedFieldSetAsync(
+        public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
             IExecutorContext context,
             IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectType objectType, object objectValue,
+            ObjectDefinition objectDefinition,
+            object? objectValue,
             NodePath path)
         {
-            var responseMap = new Dictionary<string, object>();
+            var responseMap = new Dictionary<string, object?>();
 
             foreach (var fieldGroup in groupedFieldSet)
             {
@@ -24,9 +24,9 @@ public async Task<IDictionary<string, object>> ExecuteGroupedFieldSetAsync(
                 {
                     var result = await FieldGroups.ExecuteFieldGroupAsync(
                         context,
-                        objectType,
+                        objectDefinition,
                         objectValue,
-                        new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key, fieldGroup.Value), 
+                        new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key, fieldGroup.Value),
                         path.Fork()).ConfigureAwait(false);
 
                     responseMap[responseKey] = result;
diff --git a/src/graphql/Execution/TypeIs.cs b/src/graphql/Execution/TypeIs.cs
index ca7b9777d..fe5963cb1 100644
--- a/src/graphql/Execution/TypeIs.cs
+++ b/src/graphql/Execution/TypeIs.cs
@@ -1,68 +1,54 @@
-using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class TypeIs
 {
-    public static class TypeIs
+    public static bool IsInputType(ISchema schema, TypeBase type)
     {
-        public static bool IsInputType(IType type)
+        return type switch
         {
-            if (type is IWrappingType wrappingType)
-            {
-                return IsInputType(wrappingType.OfType);
-            }
-
-            if (type is ScalarType)
-            {
-                return true;
-            }
-
-            if (type is EnumType)
-            {
-                return true;
-            }
-
-            if (type is InputObjectType)
-            {
-                return true;
-            }
-
-            return false;
-        }
+            NonNullType NonNullType => IsInputType(schema, NonNullType.OfType),
+            ListType list => IsInputType(schema, list.OfType),
+            NamedType namedType => IsInputType(schema.GetRequiredNamedType<TypeDefinition>(namedType.Name)),
+            _ => false
+        };
+    }
 
-        public static bool IsOutputType(IType type)
+    public static bool IsInputType(TypeDefinition type)
+    {
+        return type switch
         {
-            if (type is IWrappingType wrappingType)
-            {
-                return IsOutputType(wrappingType.OfType);
-            }
-
-            if (type is ScalarType)
-            {
-                return true;
-            }
-
-            if (type is ObjectType)
-            {
-                return true;
-            }
-
-            if (type is InterfaceType)
-            {
-                return true;
-            }
-
-            if (type is UnionType)
-            {
-                return true;
-            }
+            ScalarDefinition => true,
+            EnumDefinition => true,
+            InputObjectDefinition => true,
+            _ => false
+        };
+    }
 
-            if (type is EnumType)
-            {
-                return true;
-            }
+    public static bool IsOutputType(ISchema schema, TypeBase type)
+    {
+        return type switch
+        {
+            NonNullType NonNullType => IsOutputType(schema, NonNullType.OfType),
+            ListType list => IsOutputType(schema, list.OfType),
+            NamedType namedType => IsOutputType(schema.GetRequiredNamedType<TypeDefinition>(namedType.Name)),
+            _ => false
+        };
+    }
 
-            return false;
-        }
+    public static bool IsOutputType(TypeDefinition type)
+    {
+        return type switch
+        {
+            ScalarDefinition => true,
+            ObjectDefinition => true,
+            InterfaceDefinition => true,
+            UnionDefinition => true,
+            EnumDefinition => true,
+            _ => false
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Values.cs b/src/graphql/Execution/Values.cs
index 284095e65..52eab98ac 100644
--- a/src/graphql/Execution/Values.cs
+++ b/src/graphql/Execution/Values.cs
@@ -3,6 +3,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
@@ -11,47 +12,49 @@ namespace Tanka.GraphQL.Execution
     public static class Values
     {
         public static object? CoerceValue(
-            Func<string, IEnumerable<KeyValuePair<string, InputObjectField>>> getInputObjectFields,
-            Func<string, IValueConverter> getValueConverter,
+            ISchema schema,
             object? value,
-            IType valueType)
+            TypeBase valueType)
         {
-            if (valueType is NonNull nonNull)
-                return CoerceNonNullValue(
-                    getInputObjectFields,
-                    getValueConverter,
-                    value,
-                    nonNull);
-
-            if (valueType is List list)
-                return CoerceListValues(
-                    getInputObjectFields,
-                    getValueConverter,
-                    list.OfType,
-                    value);
-
-            if (valueType is ScalarType scalar) return CoerceScalarValue(getValueConverter, value, scalar);
+            switch (valueType)
+            {
+                case NonNullType NonNullType:
+                    return CoerceNonNullTypeValue(
+                        schema,
+                        value,
+                        NonNullType);
+                case ListType list:
+                    return CoerceListValues(
+                        schema,
+                        list.OfType,
+                        value);
+            }
 
-            if (valueType is EnumType enumType) return CoerceEnumValue(value, enumType);
 
-            if (valueType is InputObjectType input)
-                return CoerceInputValue(
-                    getInputObjectFields,
-                    getValueConverter,
+            if (valueType is not NamedType namedValueType)
+                throw new ValueCoercionException(
+                    $"Unexpected valueType {valueType}. Cannot coerce value.",
                     value,
-                    input);
+                    valueType);
+            
+            var valueTypeDefinition = schema.GetRequiredNamedType<TypeDefinition>(namedValueType.Name);
 
-            throw new ValueCoercionException(
-                $"Unexpected valueType {valueType}. Cannot coerce value.",
-                value,
-                valueType);
+            return valueTypeDefinition switch
+            {
+                ScalarDefinition scalar => CoerceScalarValue(schema, value, scalar),
+                EnumDefinition enumDefinition => CoerceEnumValue(value, enumDefinition),
+                InputObjectDefinition input => CoerceInputValue(
+                    schema,
+                    value,
+                    input),
+                _ => throw new ArgumentOutOfRangeException($"Type of the '{valueType} is not supported by value coercion")
+            };
         }
 
         private static IDictionary<string, object?>? CoerceInputValue(
-            Func<string, IEnumerable<KeyValuePair<string, InputObjectField>>> getInputObjectFields,
-            Func<string, IValueConverter> getValueConverter, 
+            ISchema schema,
             object? value,
-            InputObjectType input)
+            InputObjectDefinition input)
         {
             if (value == null)
                 return null;
@@ -59,11 +62,11 @@ public static class Values
             var result = new Dictionary<string, object?>();
 
             if (value is ObjectValue objectValue)
-                return CoerceInputValueAst(getInputObjectFields, getValueConverter, input, objectValue, result);
+                return CoerceInputValueAst(schema, input, objectValue, result);
 
             if (value is IDictionary<string, object> dictionaryValues)
             {
-                var fields = getInputObjectFields(input.Name);
+                var fields = schema.GetInputFields(input.Name);
                 foreach (var inputField in fields)
                 {
                     var fieldName = inputField.Key;
@@ -74,7 +77,7 @@ public static class Values
 
                     if (dictionaryValues.ContainsKey(fieldName)) astValue = dictionaryValues[fieldName];
 
-                    var coercedFieldValue = CoerceValue(getInputObjectFields, getValueConverter, astValue, fieldType);
+                    var coercedFieldValue = CoerceValue(schema, astValue, fieldType);
 
                     result[fieldName] = coercedFieldValue;
                 }
@@ -84,13 +87,12 @@ public static class Values
         }
 
         private static IDictionary<string, object?> CoerceInputValueAst(
-            Func<string, IEnumerable<KeyValuePair<string, InputObjectField>>> getInputObjectFields,
-            Func<string, IValueConverter> getValueConverter,
-            InputObjectType input,
+            ISchema schema,
+            InputObjectDefinition input,
             ObjectValue objectValue,
             Dictionary<string, object?> result)
         {
-            var fields = getInputObjectFields(input.Name);
+            var fields = schema.GetInputFields(input.Name);
             foreach (var inputField in fields)
             {
                 var fieldName = inputField.Key;
@@ -98,8 +100,7 @@ public static class Values
                 var fieldType = field.Type;
 
                 var astValue = objectValue.Fields.SingleOrDefault(v => v.Name == fieldName);
-                var coercedFieldValue =
-                    CoerceValue(getInputObjectFields, getValueConverter, astValue?.Value, fieldType);
+                var coercedFieldValue = CoerceValue(schema, astValue?.Value, fieldType);
 
                 result[fieldName] = coercedFieldValue;
             }
@@ -107,35 +108,34 @@ public static class Values
             return result;
         }
 
-        private static object CoerceNonNullValue(
-            Func<string, IEnumerable<KeyValuePair<string, InputObjectField>>> getInputObjectFields,
-            Func<string, IValueConverter> getValueConverter,
-            object value,
-            NonNull nonNull)
+        private static object CoerceNonNullTypeValue(
+            ISchema schema,
+            object? value,
+            NonNullType NonNullType)
         {
-            var coercedValue = CoerceValue(getInputObjectFields, getValueConverter, value, nonNull.OfType);
+            var coercedValue = CoerceValue(schema, value, NonNullType.OfType);
             if (coercedValue == null)
                 throw new ValueCoercionException("Coerced value is null",
                     value,
-                    nonNull);
+                    NonNullType);
 
             return coercedValue;
         }
 
-        private static object? CoerceEnumValue(object value, EnumType enumType1)
+        private static object? CoerceEnumValue(object? value, EnumDefinition enumType)
         {
             if (value is ValueBase astValue)
-                return enumType1.ParseLiteral(astValue);
+                return new EnumConverter(enumType).ParseLiteral(astValue);
 
-            return enumType1.ParseValue(value);
+            return new EnumConverter(enumType).ParseValue(value);
         }
 
         private static object? CoerceScalarValue(
-            Func<string, IValueConverter> getValueConverter,
-            object value,
-            ScalarType scalarType)
+            ISchema schema,
+            object? value,
+            ScalarDefinition scalarType)
         {
-            var serializer = getValueConverter(scalarType.Name);
+            var serializer = schema.GetRequiredValueConverter(scalarType.Name);
 
             if (value is ValueBase astValue)
                 return serializer.ParseLiteral(astValue);
@@ -144,10 +144,9 @@ private static object CoerceNonNullValue(
         }
 
         private static object? CoerceListValues(
-            Func<string, IEnumerable<KeyValuePair<string, InputObjectField>>> getInputObjectFields,
-            Func<string, IValueConverter> getValueConverter,
-            IType listWrappedType,
-            object value)
+            ISchema schema,
+            TypeBase listWrappedType,
+            object? value)
         {
             if (value == null)
                 return null;
@@ -157,7 +156,7 @@ private static object CoerceNonNullValue(
             {
                 foreach (var listValueValue in listValue.Values)
                 {
-                    var coercedValue = CoerceValue(getInputObjectFields, getValueConverter, listValueValue,
+                    var coercedValue = CoerceValue(schema, listValueValue,
                         listWrappedType);
                     coercedListValues.Add(coercedValue);
                 }
@@ -169,14 +168,14 @@ private static object CoerceNonNullValue(
             {
                 foreach (var v in values)
                 {
-                    var coercedValue = CoerceValue(getInputObjectFields, getValueConverter, v, listWrappedType);
+                    var coercedValue = CoerceValue(schema, v, listWrappedType);
                     coercedListValues.Add(coercedValue);
                 }
 
                 return coercedListValues;
             }
 
-            coercedListValues.Add(CoerceValue(getInputObjectFields, getValueConverter, value, listWrappedType));
+            coercedListValues.Add(CoerceValue(schema, value, listWrappedType));
             return coercedListValues.ToArray();
         }
     }
diff --git a/src/graphql/Execution/Variables.cs b/src/graphql/Execution/Variables.cs
index bb6130035..9b369a018 100644
--- a/src/graphql/Execution/Variables.cs
+++ b/src/graphql/Execution/Variables.cs
@@ -20,10 +20,10 @@ public static class Variables
             foreach (var variableDefinition in variableDefinitions)
             {
                 var variableName = variableDefinition.Variable.Name;
-                var variableType = Ast.TypeFromAst(schema, variableDefinition.Type);
+                var variableType = variableDefinition.Type;
 
                 //  should be assert?
-                if (!TypeIs.IsInputType(variableType))
+                if (!TypeIs.IsInputType(schema, variableType))
                     throw new VariableException($"Variable is not of input type", variableName, variableType);
 
                 var defaultValue = variableDefinition.DefaultValue;
@@ -33,7 +33,7 @@ public static class Variables
                 if (!hasValue && defaultValue != null) 
                     coercedValues[variableName] = defaultValue;
 
-                if (variableType is NonNull
+                if (variableType is NonNullType
                     && (!hasValue || value == null))
                     throw new ValueCoercionException(
                         $"Variable {variableName} type is non-nullable but value is null or not set",
@@ -46,8 +46,7 @@ public static class Variables
                         coercedValues[variableName] = null;
                     else
                         coercedValues[variableName] = Values.CoerceValue(
-                            schema.GetInputFields,
-                            schema.GetValueConverter,
+                            schema,
                             value,
                             variableType);
                 }
diff --git a/src/graphql/ExecutionOptions.cs b/src/graphql/ExecutionOptions.cs
index 04b9352d2..7e23b75e1 100644
--- a/src/graphql/ExecutionOptions.cs
+++ b/src/graphql/ExecutionOptions.cs
@@ -33,8 +33,7 @@ public ExecutionOptions()
         /// <summary>
         ///     Query validator function
         /// </summary>
-        public Func<ISchema, ExecutableDocument, IReadOnlyDictionary<string, object>, ValueTask<ValidationResult>>
-            Validate { get; set; }
+        public Func<ISchema, ExecutableDocument, IReadOnlyDictionary<string, object>, ValueTask<ValidationResult>>? Validate { get; set; }
 
         /// <summary>
         ///     Schema to execute against
@@ -71,7 +70,7 @@ public static ValueTask<ValidationResult> DefaultValidate(
             IEnumerable<CombineRule> rules,
             ISchema schema,
             ExecutableDocument document,
-            IReadOnlyDictionary<string, object> variableValues = null)
+            IReadOnlyDictionary<string, object?>? variableValues = null)
         {
             var result = Validator.Validate(
                 rules,
diff --git a/src/graphql/Extensions/Analysis/Cost.cs b/src/graphql/Extensions/Analysis/Cost.cs
index 9986ac27a..c13c0681c 100644
--- a/src/graphql/Extensions/Analysis/Cost.cs
+++ b/src/graphql/Extensions/Analysis/Cost.cs
@@ -4,24 +4,18 @@
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 
 namespace Tanka.GraphQL.Extensions.Analysis
 {
     public static class CostAnalyzer
     {
-        public static DirectiveType CostDirective = new DirectiveType(
-            "cost",
-            new[]
-            {
-                DirectiveLocation.FIELD_DEFINITION
-            },
-            new Args
-            {
-                {"complexity", ScalarType.NonNullInt},
-                {"multipliers", new List(ScalarType.NonNullString)}
-            });
+        public static DirectiveDefinition CostDirective = 
+            @"directive @cost(
+                    complexity: Int!
+                    multipliers: [String!]
+               ) on FIELD_DEFINITION 
+            ";
 
         internal static TypeSystemDocument CostDirectiveAst = 
             @"directive @cost(
diff --git a/src/graphql/ExtensionsRunner.cs b/src/graphql/ExtensionsRunner.cs
index fa577a4f6..5e891e662 100644
--- a/src/graphql/ExtensionsRunner.cs
+++ b/src/graphql/ExtensionsRunner.cs
@@ -5,14 +5,13 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Validation;
 using Tanka.GraphQL.ValueResolution;
-using Type = System.Type;
 
 namespace Tanka.GraphQL
 {
     public class ExtensionsRunner
     {
-        private readonly List<IExtensionScope> _scopes = new List<IExtensionScope>();
-        private readonly Dictionary<Type, IExtensionScope> _scopesDictionary = new Dictionary<Type, IExtensionScope>();
+        private readonly List<IExtensionScope> _scopes = new();
+        private readonly Dictionary<Type, IExtensionScope> _scopesDictionary = new();
 
         public ExtensionsRunner(IReadOnlyList<IExtensionScope> extensions)
         {
@@ -24,7 +23,7 @@ public ExtensionsRunner(IReadOnlyList<IExtensionScope> extensions)
         public T Extension<T>() where T : IExtensionScope
         {
             var extensionScope = Extension(typeof(T));
-            return (T) extensionScope;
+            return (T)extensionScope;
         }
 
         public IExtensionScope Extension(Type extensionScopeType)
diff --git a/src/graphql/IResolverMap.cs b/src/graphql/IResolverMap.cs
index b4a65ce6f..1b90e70d5 100644
--- a/src/graphql/IResolverMap.cs
+++ b/src/graphql/IResolverMap.cs
@@ -1,19 +1,18 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL
 {
     public interface IResolverMap
     {
-        Resolver GetResolver(string typeName, string fieldName);
+        Resolver? GetResolver(string typeName, string fieldName);
     }
 
     public static class ResolverMapExtensions
     {
-        public static Resolver GetResolver(this IResolverMap map, ComplexType type, KeyValuePair<string, IField> field)
+        public static Resolver? GetResolver(this IResolverMap map, ObjectDefinition type, FieldDefinition field)
         {
-            return map.GetResolver(type.Name, field.Key);
+            return map.GetResolver(type.Name, field.Name);
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ISubscriberMap.cs b/src/graphql/ISubscriberMap.cs
index 089de536d..5cea4a1e1 100644
--- a/src/graphql/ISubscriberMap.cs
+++ b/src/graphql/ISubscriberMap.cs
@@ -1,20 +1,19 @@
-using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL
 {
     public interface ISubscriberMap
     {
-        Subscriber GetSubscriber(string typeName, string fieldName);
+        Subscriber? GetSubscriber(string typeName, string fieldName);
     }
 
     public static class SubscriberMapExtensions
     {
-        public static Subscriber GetSubscriber(this ISubscriberMap map, ComplexType type,
-            KeyValuePair<string, IField> field)
+        public static Subscriber? GetSubscriber(this ISubscriberMap map, ObjectDefinition type,
+            FieldDefinition field)
         {
-            return map.GetSubscriber(type.Name, field.Key);
+            return map.GetSubscriber(type.Name, field.Name);
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/Introspect.cs b/src/graphql/Introspection/Introspect.cs
index 1f1f445ef..33476a4f8 100644
--- a/src/graphql/Introspection/Introspect.cs
+++ b/src/graphql/Introspection/Introspect.cs
@@ -1,4 +1,4 @@
-using Tanka.GraphQL.Tools;
+using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Introspection
@@ -100,14 +100,15 @@ fragment TypeRef on __Type {
         /// </summary>
         /// <param name="schema"></param>
         /// <returns></returns>
-        public static ISchema Schema(ISchema schema)
+        public static Task<ISchema> Schema(ISchema schema)
         {
-            var introspectionSchema = IntrospectionSchema.Create();
+            var builder = IntrospectionSchema.Create();
             var introspectionResolvers = new IntrospectionResolvers(schema);
 
-            return SchemaTools.MakeExecutableSchema(
-                introspectionSchema,
-                introspectionResolvers);
+            return builder.Build(new SchemaBuildOptions()
+            {
+                Resolvers = introspectionResolvers
+            });
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/IntrospectionResolvers.cs b/src/graphql/Introspection/IntrospectionResolvers.cs
index 85ffa082e..97b22ba1e 100644
--- a/src/graphql/Introspection/IntrospectionResolvers.cs
+++ b/src/graphql/Introspection/IntrospectionResolvers.cs
@@ -1,12 +1,15 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Introspection
 {
-    public class IntrospectionResolvers : ObjectTypeMap
+    public class IntrospectionResolvers : ResolversMap
     {
         public IntrospectionResolvers(ISchema source)
         {
@@ -21,7 +24,7 @@ public IntrospectionResolvers(ISchema source)
 
             this[IntrospectionSchema.SchemaName] = new FieldResolversMap
             {
-                {"types", context => ResolveSync.As(source.QueryTypes<INamedType>())},
+                {"types", context => ResolveSync.As(source.QueryTypes<TypeDefinition>())},
                 {"queryType", context => ResolveSync.As(source.Query)},
                 {"mutationType", context => ResolveSync.As(source.Mutation)},
                 {"subscriptionType", context => ResolveSync.As(source.Subscription)},
@@ -30,53 +33,50 @@ public IntrospectionResolvers(ISchema source)
 
             this[IntrospectionSchema.TypeName] = new FieldResolversMap
             {
-                {"kind", Resolve.PropertyOf<IType>(t => KindOf(t))},
-                {"name", Resolve.PropertyOf<INamedType>(t => t.Name)},
-                {"description", Resolve.PropertyOf<IDescribable>(t => t.Description)},
+                {"kind", Resolve.PropertyOf<INode>(t => KindOf(t))},
+                {"name", Resolve.PropertyOf<TypeDefinition>(t => t.Name)},
+                {"description", Resolve.PropertyOf<INode>(t => Describe(t))},
 
                 // OBJECT and INTERFACE only
                 {
                     "fields", context =>
                     {
-                        if (!(context.ObjectValue is ComplexType complexType))
-                            return ResolveSync.As(null);
+                        var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
+
+                        var fields = context.ObjectValue switch
+                        {
+                            null => null,
+                            ObjectDefinition objectDefinition => source.GetFields(objectDefinition.Name),
+                            InterfaceDefinition interfaceDefinition => source.GetFields(interfaceDefinition.Name),
+                            _ => null
+                        };
 
-                        var includeDeprecated = (bool) context.Arguments["includeDeprecated"];
+                        if (fields is null)
+                            return ResolveSync.As(null);
 
-                        var fields = source.GetFields(complexType.Name);
 
-                        if (!includeDeprecated) fields = fields.Where(f => !f.Value.IsDeprecated);
+                        if (!includeDeprecated) 
+                            fields = fields.Where(f => !f.Value.TryGetDirective("deprecated", out _));
 
                         return ResolveSync.As(fields.ToList());
                     }
                 },
 
                 // OBJECT only
-                {"interfaces", Resolve.PropertyOf<ObjectType>(t => t.Interfaces)},
+                {"interfaces", Resolve.PropertyOf<ObjectDefinition>(t => t.Interfaces)},
 
 
                 // INTERFACE and UNION only
                 {
                     "possibleTypes", context =>
                     {
-                        List<ObjectType> possibleTypes = null;
-
-                        switch (context.ObjectValue)
+                        var possibleTypes = context.ObjectValue switch
                         {
-                            case InterfaceType interfaceType:
-                            {
-                                var objects = source.QueryTypes<ObjectType>()
-                                    .Where(o => o.Implements(interfaceType))
-                                    .ToList();
-
-                                possibleTypes = objects;
-                                break;
-                            }
-                            case UnionType unionType:
-                                possibleTypes = unionType.PossibleTypes.Select(p => p.Value)
-                                    .ToList();
-                                break;
-                        }
+                            null => null,
+                            InterfaceDefinition interfaceDefinition => source.GetPossibleTypes(interfaceDefinition),
+                            UnionDefinition unionDefinition => source.GetPossibleTypes(unionDefinition),
+                            _ => null
+                        };
 
                         return ResolveSync.As(possibleTypes);
                     }
@@ -86,87 +86,103 @@ public IntrospectionResolvers(ISchema source)
                 {
                     "enumValues", context =>
                     {
-                        var en = context.ObjectValue as EnumType;
+                        var en = context.ObjectValue as EnumDefinition;
 
                         if (en == null)
                             return ResolveSync.As(null);
 
-                        var includeDeprecated = (bool) context.Arguments["includeDeprecated"];
+                        var includeDeprecated = (bool?)context.GetArgument<bool?>("includeDeprecated") ?? false;
+
+                        var values = en.Values?.ToList();
 
-                        var values = en.Values;
+                        if (!includeDeprecated) 
+                            values = values?.Where(f => !f.TryGetDirective("deprecated", out _)).ToList();
 
-                        if (!includeDeprecated) values = values.Where(v => !v.Value.IsDeprecated);
                         return ResolveSync.As(values);
                     }
                 },
 
                 // INPUT_OBJECT only
                 {
-                    "inputFields", Resolve.PropertyOf<InputObjectType>(t => source.GetInputFields(t.Name)
-                        .Select(iof => new KeyValuePair<string, Argument>(
-                            iof.Key,
-                            new Argument(iof.Value.Type, iof.Value.DefaultValue, iof.Value.Description))).ToList())
+                    "inputFields", Resolve.PropertyOf<InputObjectDefinition>(t => source.GetInputFields(t.Name)
+                        .Select(iof => iof.Value).ToList())
                 },
 
                 // NON_NULL and LIST only
-                {"ofType", Resolve.PropertyOf<IWrappingType>(t => t.OfType)}
+                {"ofType", Resolve.PropertyOf<INode>(t => t switch
+                {
+                    NonNullType NonNullType => NonNullType.OfType,
+                    ListType list => list.OfType
+                })}
             };
 
             this[IntrospectionSchema.FieldName] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Value.Description)},
-                {"args", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Value.Arguments)},
-                {"type", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Value.Type)},
-                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Value.IsDeprecated)},
-                {"deprecationReason", Resolve.PropertyOf<KeyValuePair<string, IField>>(f => f.Value.DeprecationReason)}
+                {"name", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Key)},
+                {"description", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Description)},
+                {"args", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Arguments)},
+                {"type", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Type)},
+                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out _))},
+                {"deprecationReason", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out var reason) ? reason: null)}
             };
 
             this[IntrospectionSchema.InputValueName] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, Argument>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, Argument>>(f => f.Value.Description)},
-                {"type", Resolve.PropertyOf<KeyValuePair<string, Argument>>(f => f.Value.Type)},
-                {"defaultValue", Resolve.PropertyOf<KeyValuePair<string, Argument>>(f => f.Value.DefaultValue)}
+                {"name", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Key)},
+                {"description", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.Description)},
+                {"type", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.Type)},
+                {"defaultValue", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.DefaultValue)}
             };
 
             this[IntrospectionSchema.EnumValueName] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, EnumValue>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, EnumValue>>(f => f.Value.Description)},
-                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, EnumValue>>(f => f.Value.IsDeprecated)},
+                {"name", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Key)},
+                {"description", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.Description)},
+                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.IsDeprecated(out _))},
                 {
-                    "deprecationReason",
-                    Resolve.PropertyOf<KeyValuePair<string, EnumValue>>(f => f.Value.DeprecationReason)
+                    "deprecationReason", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.IsDeprecated(out var reason) ? reason : null)
                 }
             };
 
             this["__Directive"] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<DirectiveType>(d => d.Name)},
-                {"description", Resolve.PropertyOf<DirectiveType>(d => d.Description)},
-                {"locations", Resolve.PropertyOf<DirectiveType>(d => LocationsOf(d.Locations))},
-                {"args", Resolve.PropertyOf<DirectiveType>(d => d.Arguments)}
+                {"name", Resolve.PropertyOf<DirectiveDefinition>(d => d.Name)},
+                {"description", Resolve.PropertyOf<DirectiveDefinition>(d => d.Description)},
+                {"locations", Resolve.PropertyOf<DirectiveDefinition>(d => LocationsOf(d.DirectiveLocations))},
+                {"args", Resolve.PropertyOf<DirectiveDefinition>(d => d.Arguments)}
+            };
+        }
+
+        private string? Describe(INode node)
+        {
+            return node switch
+            {
+                null => null,
+                ObjectDefinition objectDefinition => objectDefinition.Description,
+                InterfaceDefinition interfaceDefinition => interfaceDefinition.Description,
+                FieldDefinition fieldDefinition => fieldDefinition.Description,
+                DirectiveDefinition directiveDefinition => directiveDefinition.Description,
+                _ => null, //todo: list all types with descriptions
             };
         }
 
-        public static __TypeKind KindOf(IType type)
+        public static __TypeKind KindOf(INode type)
         {
             return type switch
             {
-                ObjectType _ => __TypeKind.OBJECT,
-                ScalarType _ => __TypeKind.SCALAR,
-                EnumType _ => __TypeKind.ENUM,
-                InputObjectType _ => __TypeKind.INPUT_OBJECT,
-                InterfaceType _ => __TypeKind.INTERFACE,
-                List _ => __TypeKind.LIST,
-                NonNull _ => __TypeKind.NON_NULL,
-                UnionType _ => __TypeKind.UNION,
+                ObjectDefinition _ => __TypeKind.OBJECT,
+                ScalarDefinition _ => __TypeKind.SCALAR,
+                EnumDefinition _ => __TypeKind.ENUM,
+                InputObjectDefinition _ => __TypeKind.INPUT_OBJECT,
+                InterfaceDefinition _ => __TypeKind.INTERFACE,
+                ListType _ => __TypeKind.LIST,
+                NonNullType _ => __TypeKind.NON_NULL,
+                UnionDefinition _ => __TypeKind.UNION,
                 _ => throw new InvalidOperationException($"Cannot get kind form {type}")
             };
         }
 
-        private IEnumerable<__DirectiveLocation> LocationsOf(IEnumerable<DirectiveLocation> locations)
+        private IEnumerable<__DirectiveLocation> LocationsOf(IEnumerable<string> locations)
         {
             return locations
                 .Select(l => (__DirectiveLocation) Enum.Parse(
diff --git a/src/graphql/Introspection/IntrospectionSchema.cs b/src/graphql/Introspection/IntrospectionSchema.cs
index 1f556765d..fce4ff047 100644
--- a/src/graphql/Introspection/IntrospectionSchema.cs
+++ b/src/graphql/Introspection/IntrospectionSchema.cs
@@ -1,116 +1,117 @@
-using System;
-using System.Linq;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+public class IntrospectionSchema
 {
-    public class IntrospectionSchema
+    public const string EnumValueName = "__EnumValue";
+    public const string FieldName = "__Field";
+    public const string InputValueName = "__InputValue";
+    public const string SchemaName = "__Schema";
+    public const string TypeKindName = "__TypeKind";
+    public const string TypeName = "__Type";
+
+    public static SchemaBuilder Create()
     {
-        public const string EnumValueName = "__EnumValue";
-        public const string FieldName = "__Field";
-        public const string InputValueName = "__InputValue";
-        public const string SchemaName = "__Schema";
-        public const string TypeKindName = "__TypeKind";
-        public const string TypeName = "__Type";
-
-        public static SchemaBuilder Create()
-        {
-            var builder = new SchemaBuilder();
-
-            // define type here so that it can be referenced early
-            builder.Object(TypeName, out var type);
-            var typeList = new List(new NonNull(type));
-
-            builder.Enum(TypeKindName, out var typeKind,
-                null,
-                values => 
-                values.Value(__TypeKind.SCALAR.ToString(), default, null, null)
-                .Value(__TypeKind.OBJECT.ToString(), default, null, null)
-                .Value(__TypeKind.ENUM.ToString(), default, null, null)
-                .Value(__TypeKind.INPUT_OBJECT.ToString(), default, null, null)
-                .Value(__TypeKind.INTERFACE.ToString(), default, null, null)
-                .Value(__TypeKind.LIST.ToString(), default, null, null)
-                .Value(__TypeKind.NON_NULL.ToString(), default, null, null)
-                .Value(__TypeKind.UNION.ToString(), default, null, null));
-
-            builder.Object(InputValueName, out var inputValue)
-                .Connections(connect => connect
-                    .Field(inputValue, "name", ScalarType.NonNullString)
-                    .Field(inputValue, "description", ScalarType.String)
-                    .Field(inputValue, "defaultValue", ScalarType.String)
-                    .Field(inputValue, "type", new NonNull(type)));
-
-            var inputValueList = new List(new NonNull(inputValue));
-            var argsList = new List(new NonNull(inputValue));
-
-            builder.Object(FieldName, out var field)
-                .Connections(connect => connect
-                    .Field(field, "name", ScalarType.NonNullString)
-                    .Field(field, "description", ScalarType.String)
-                    .Field(field, "args", argsList)
-                    .Field(field, "type", new NonNull(type))
-                    .Field(field, "isDeprecated", ScalarType.NonNullBoolean)
-                    .Field(field, "deprecationReason", ScalarType.String));
-
-            var fieldList = new List(new NonNull(field));
-
-            builder.Object(EnumValueName, out var enumValue)
-                .Connections(connect => connect
-                    .Field(enumValue, "name", ScalarType.NonNullString)
-                    .Field(enumValue, "description", ScalarType.String)
-                    .Field(enumValue, "isDeprecated", ScalarType.NonNullBoolean)
-                    .Field(enumValue, "deprecationReason", ScalarType.String));
-
-            var enumValueList = new List(new NonNull(enumValue));
-
-            builder
-                .Connections(connect => connect
-                    .Field(type, "kind", new NonNull(typeKind))
-                    .Field(type, "name", ScalarType.String)
-                    .Field(type, "description", ScalarType.String)
-                    .Field(type, "fields", fieldList,
-                        args: args => args.Arg("includeDeprecated", ScalarType.Boolean, false, default))
-                    .Field(type, "interfaces", typeList)
-                    .Field(type, "possibleTypes", typeList)
-                    .Field(type, "enumValues", enumValueList,
-                        args: args => args.Arg("includeDeprecated", ScalarType.Boolean, false, default))
-                    .Field(type, "inputFields", inputValueList)
-                    .Field(type, "ofType", type));
-
-            builder.Enum("__DirectiveLocation", out var directiveLocation,
-                directives: null,
-                values: values => Enum.GetNames(typeof(__DirectiveLocation))
-                    .ToList()
-                    .ForEach(v => values
-                        .Value(
-                            v, 
-                            string.Empty, 
-                            Enumerable.Empty<DirectiveInstance>(), 
-                            null)));
-
-            builder.Object("__Directive", out var directive)
-                .Connections(connect => connect
-                    .Field(directive, "name", ScalarType.String)
-                    .Field(directive, "description", ScalarType.String)
-                    .Field(directive, "locations", new List(directiveLocation))
-                    .Field(directive, "args", argsList));
-
-            builder.Object(SchemaName, out var schema)
-                .Connections(connect => connect
-                    .Field(schema, "types", typeList)
-                    .Field(schema, "queryType", type)
-                    .Field(schema, "mutationType", type)
-                    .Field(schema, "subscriptionType", type)
-                    .Field(schema, "directives", new List(directive)));
-
-            builder.Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "__schema", schema)
-                    .Field(query, "__type", type,
-                        args: args => args.Arg("name", ScalarType.NonNullString, default, default)));
-
-            return builder;
-        }
+        var builder = new SchemaBuilder();
+
+        builder.Add(
+            (TypeSystemDocument)
+@"
+type __Schema {
+  description: String
+  types: [__Type!]!
+  queryType: __Type!
+  mutationType: __Type
+  subscriptionType: __Type
+  directives: [__Directive!]!
+}
+
+type __Type {
+  kind: __TypeKind!
+  name: String
+  description: String
+  # must be non-null for OBJECT and INTERFACE, otherwise null.
+  fields(includeDeprecated: Boolean = false): [__Field!]
+  # must be non-null for OBJECT and INTERFACE, otherwise null.
+  interfaces: [__Type!]
+  # must be non-null for INTERFACE and UNION, otherwise null.
+  possibleTypes: [__Type!]
+  # must be non-null for ENUM, otherwise null.
+  enumValues(includeDeprecated: Boolean = false): [__EnumValue!]
+  # must be non-null for INPUT_OBJECT, otherwise null.
+  inputFields: [__InputValue!]
+  # must be non-null for NON_NULL and LIST, otherwise null.
+  ofType: __Type
+  # may be non-null for custom SCALAR, otherwise null.
+  specifiedByURL: String
+}
+
+enum __TypeKind {
+  SCALAR
+  OBJECT
+  INTERFACE
+  UNION
+  ENUM
+  INPUT_OBJECT
+  LIST
+  NON_NULL
+}
+
+type __Field {
+  name: String!
+  description: String
+  args: [__InputValue!]!
+  type: __Type!
+  isDeprecated: Boolean!
+  deprecationReason: String
+}
+
+type __InputValue {
+  name: String!
+  description: String
+  type: __Type!
+  defaultValue: String
+}
+
+type __EnumValue {
+  name: String!
+  description: String
+  isDeprecated: Boolean!
+  deprecationReason: String
+}
+
+type __Directive {
+  name: String!
+  description: String
+  locations: [__DirectiveLocation!]!
+  args: [__InputValue!]!
+  isRepeatable: Boolean!
+}
+
+enum __DirectiveLocation {
+  QUERY
+  MUTATION
+  SUBSCRIPTION
+  FIELD
+  FRAGMENT_DEFINITION
+  FRAGMENT_SPREAD
+  INLINE_FRAGMENT
+  VARIABLE_DEFINITION
+  SCHEMA
+  SCALAR
+  OBJECT
+  FIELD_DEFINITION
+  ARGUMENT_DEFINITION
+  INTERFACE
+  UNION
+  ENUM
+  ENUM_VALUE
+  INPUT_OBJECT
+  INPUT_FIELD_DEFINITION
+}
+");
+
+        return builder;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs b/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
index 513285c79..f8847ce0e 100644
--- a/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
+++ b/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
@@ -13,7 +13,7 @@ public class EmbeddedResourceImportProvider : IImportProvider
     {
         private static readonly Regex _match = new Regex(@"embedded:\/\/(?<assembly>\w.+)\/(?<resourceName>\w.+)");
 
-        public bool CanImport(string path, string[] types)
+        public bool CanImport(string path, string[]? types)
         {
             return _match.IsMatch(path);
         }
@@ -25,21 +25,23 @@ public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? ty
             var resourceName = matches.Groups["resourceName"].Value;
 
             var source = GetSource(assembly, resourceName);
-            var document = await GraphQL.Parser.ParseTypeSystemDocumentAsync(source, options);
+            var document = (TypeSystemDocument)source;
 
-            // if no type filter provided import all
-            if (types == null || types.Length == 0)
+            /* resource imports are fully qualified */
+
+            if (types is {Length: > 0})
             {
-                return document;
+
+                document = document
+                    .WithDirectiveDefinitions(document.DirectiveDefinitions
+                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
+                    .WithTypeDefinitions(document.TypeDefinitions
+                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
+                    .WithTypeExtensions(document.TypeExtensions
+                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList());
             }
 
-            return document
-                .WithDirectiveDefinitions(document.DirectiveDefinitions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
-                .WithTypeDefinitions(document.TypeDefinitions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
-                .WithTypeExtensions(document.TypeExtensions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList());
+            return document;
         }
 
         private string GetSource(string assemblyName, string resourceName)
@@ -53,8 +55,12 @@ private string GetSource(string assemblyName, string resourceName)
 
             using var stream = assembly.GetManifestResourceStream(resourceName);
             if (stream == null)
-                throw new InvalidOperationException($"Could not load manifest stream from '{assemblyName}' with name '{resourceName}'.");
-            
+            {
+                var resourceNames = string.Join(",", assembly.GetManifestResourceNames());
+                throw new InvalidOperationException(
+                    $"Could not load manifest stream from '{assemblyName}' with name '{resourceName}'. Found resources: {resourceNames}");
+            }
+
             using var reader = new StreamReader(stream);
             return reader.ReadToEnd();
         }
diff --git a/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs b/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
index 1a40ced1b..05ab3010c 100644
--- a/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
+++ b/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
@@ -1,72 +1,82 @@
 using System;
-using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Text;
+using System.Text.Unicode;
 using System.Threading.Tasks;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
+namespace Tanka.GraphQL.Language.ImportProviders;
 
-namespace Tanka.GraphQL.Language.ImportProviders
+public class FileSystemImportProvider : IImportProvider
 {
-    public class FileSystemImportProvider : IImportProvider
+    public static string FileExtension = ".graphql";
+    private readonly string _rootPath;
+
+    public FileSystemImportProvider() : this(AppContext.BaseDirectory)
     {
-        public static string FileExtension = ".graphql";
-        private readonly string _rootPath;
+    }
 
-        public FileSystemImportProvider() : this(Environment.CurrentDirectory)
-        {
-        }
+    public FileSystemImportProvider(string rootPath)
+    {
+        _rootPath = rootPath;
+    }
 
-        public FileSystemImportProvider(string rootPath)
-        {
-            _rootPath = rootPath;
-        }
+    public bool CanImport(string path, string[]? types)
+    {
+        path = GetFullPath(path);
+        return File.Exists(path);
+    }
 
-        public bool CanImport(string path, string[] types)
-        {
-            path = GetFullPath(path);
-            return File.Exists(path);
-        }
+    public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
+    {
+        path = GetFullPath(path);
+        var source = await File.ReadAllTextAsync(path);
 
-        public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
-        {
-            path = GetFullPath(path);
-            var source = File.ReadAllText(path);
+        // parse normally
+        var document = (TypeSystemDocument)source;
 
-            // we need new options with correctly rooted file system import provider
+        if (document.Imports is not null)
+        {
             var rootPath = Path.GetDirectoryName(path);
-            var newOptions = options
-                .ReplaceImportProvider(
-                    this,
-                    new FileSystemImportProvider(rootPath));
-
-            // parse normally
-            var document = await GraphQL.Parser.ParseTypeSystemDocumentAsync(source, newOptions);
+            document = document
+                .WithImports(document.Imports.Select(import => FullyQualify(import, rootPath ?? _rootPath)).ToList());
+        }
 
-            // if no type filter provided import all
-            if (types == null || types.Length == 0)
-            {
-                return document;
-            }
+        // if no type filter provided import all
+        if (types is { Length: > 0 })
+        {
 
-            return document
+            document = document
                 .WithDirectiveDefinitions(document.DirectiveDefinitions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList())
                 .WithTypeDefinitions(document.TypeDefinitions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList())
                 .WithTypeExtensions(document.TypeExtensions
-                    ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList());
-            
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList());
         }
 
-        private string GetFullPath(string path)
-        {
-            if (!Path.HasExtension(path)) path += FileExtension;
-            
-            if (!Path.IsPathRooted(path)) 
-                path = Path.Combine(_rootPath, path);
+        return document;
+    }
 
-            return path;
-        }
+    private Import FullyQualify(Import import, string rootPath)
+    {
+        var from = import.From.ToString();
+
+        if (!Path.IsPathRooted(from)) 
+            from = Path.Combine(rootPath, from);
+
+        return new Import(import.Types, new StringValue(Encoding.UTF8.GetBytes(from)));
+    }
+
+    private string GetFullPath(string path)
+    {
+        if (!Path.HasExtension(path)) path += FileExtension;
+
+        if (!Path.IsPathRooted(path))
+            path = Path.Combine(_rootPath, path);
+
+        return path;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Parser.cs b/src/graphql/Parser.cs
deleted file mode 100644
index 18f81d1a3..000000000
--- a/src/graphql/Parser.cs
+++ /dev/null
@@ -1,67 +0,0 @@
-using System.Linq;
-using System.Threading.Tasks;
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-
-namespace Tanka.GraphQL
-{
-    public static class Parser
-    {
-        /// <summary>
-        ///     Parse <see cref="document" /> into <see cref="ExecutableDocument" />
-        /// </summary>
-        /// <param name="document"></param>
-        /// <returns></returns>
-        public static ExecutableDocument ParseDocument(string document)
-        {
-            var parser = Language.Parser.Create(document);
-            return parser.ParseExecutableDocument();
-        }
-
-        /// <summary>
-        ///     Parse <see cref="document" /> into <see cref="TypeSystemDocument" />
-        /// </summary>
-        /// <param name="document"></param>
-        /// <returns></returns>
-        public static TypeSystemDocument ParseTypeSystemDocument(string document)
-        {
-            var parser = Language.Parser.Create(document);
-            return parser.ParseTypeSystemDocument();
-        }
-
-        /// <summary>
-        ///     Parse <see cref="document" /> into <see cref="TypeSystemDocument" />
-        ///     with given options
-        /// </summary>
-        /// <param name="document"></param>
-        /// <param name="options"></param>
-        /// <returns></returns>
-        public static async Task<TypeSystemDocument> ParseTypeSystemDocumentAsync(string document, ParserOptions? options = null)
-        {
-            var root = ParseTypeSystemDocument(document);
-
-            if (options != null && root.Imports != null)
-            {
-                foreach (var import in root.Imports)
-                {
-                    var from = import.From.ToString();
-                    var types = import.Types?.Select(t => t.ToString()).ToArray();
-                    
-                    var provider = options.ImportProviders
-                        .FirstOrDefault(p => p.CanImport(from, types));
-
-                    if (provider == null)
-                        throw new DocumentException($"Import from '{from}' failed. No provider capable of import found.");
-
-                    var importedDocument = await provider.ImportAsync(from, types, options);
-
-                    root = root
-                        .Merge(importedDocument);
-                }
-            }
-
-            return root;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/ParserOptions.cs b/src/graphql/ParserOptions.cs
index ac7c90e97..4859a89df 100644
--- a/src/graphql/ParserOptions.cs
+++ b/src/graphql/ParserOptions.cs
@@ -1,35 +1,34 @@
 using System.Collections.Generic;
-using Tanka.GraphQL.Extensions;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.ImportProviders;
+//using Tanka.GraphQL.Extensions;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class ParserOptions
 {
-    public class ParserOptions
+    public static ParserOptions Sdl = new()
     {
-        public static ParserOptions Sdl = new ParserOptions
+        ImportProviders = new List<IImportProvider>
         {
-            ImportProviders = new List<IImportProvider>
-            {
-                new ExtensionsImportProvider(),
-                new FileSystemImportProvider(),
-                new EmbeddedResourceImportProvider()
-            }
-        };
+            //new ExtensionsImportProvider(),
+            new FileSystemImportProvider(),
+            new EmbeddedResourceImportProvider()
+        }
+    };
 
-        public List<IImportProvider> ImportProviders { get; set; } = new List<IImportProvider>();
+    public List<IImportProvider> ImportProviders { get; set; } = new();
 
-        public ParserOptions ReplaceImportProvider(
-            IImportProvider provider, 
-            IImportProvider with)
-        {
-            var options = new ParserOptions();
-            options.ImportProviders.AddRange(ImportProviders);
-            var index = options.ImportProviders.IndexOf(provider);
-            options.ImportProviders.Remove(provider);
-            options.ImportProviders.Insert(index, with);
+    public ParserOptions ReplaceImportProvider(
+        IImportProvider provider,
+        IImportProvider with)
+    {
+        var options = new ParserOptions();
+        options.ImportProviders.AddRange(ImportProviders);
+        var index = options.ImportProviders.IndexOf(provider);
+        options.ImportProviders.Remove(provider);
+        options.ImportProviders.Insert(index, with);
 
-            return options;
-        }
+        return options;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ObjectTypeMap.cs b/src/graphql/ResolversMap.cs
similarity index 61%
rename from src/graphql/ObjectTypeMap.cs
rename to src/graphql/ResolversMap.cs
index cb3a41f19..bece935c3 100644
--- a/src/graphql/ObjectTypeMap.cs
+++ b/src/graphql/ResolversMap.cs
@@ -3,9 +3,9 @@
 
 namespace Tanka.GraphQL
 {
-    public class ObjectTypeMap : Dictionary<string, FieldResolversMap>, IResolverMap, ISubscriberMap
+    public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap, ISubscriberMap
     {
-        public Resolver GetResolver(string typeName, string fieldName)
+        public Resolver? GetResolver(string typeName, string fieldName)
         {
             if (!TryGetValue(typeName, out var objectNode))
                 return null;
@@ -14,7 +14,7 @@ public Resolver GetResolver(string typeName, string fieldName)
             return resolver;
         }
 
-        public Subscriber GetSubscriber(string typeName, string fieldName)
+        public Subscriber? GetSubscriber(string typeName, string fieldName)
         {
             if (!TryGetValue(typeName, out var objectNode))
                 return null;
@@ -23,16 +23,16 @@ public Subscriber GetSubscriber(string typeName, string fieldName)
             return resolver;
         }
 
-        public ObjectTypeMap Clone()
+        public ResolversMap Clone()
         {
-            var result = new ObjectTypeMap();
+            var result = new ResolversMap();
 
             foreach (var objectMap in this) result.Add(objectMap.Key, objectMap.Value.Clone());
 
             return result;
         }
 
-        public static ObjectTypeMap operator +(ObjectTypeMap a, ObjectTypeMap b)
+        public static ResolversMap operator +(ResolversMap a, ResolversMap b)
         {
             var result = a.Clone();
 
@@ -42,19 +42,19 @@ public ObjectTypeMap Clone()
             return result;
         }
 
-        public static ObjectTypeMap operator +(ObjectTypeMap a, (string Name, FieldResolversMap Fields) objectType)
+        public static ResolversMap operator +(ResolversMap a, (string Name, FieldResolversMap Fields) ObjectDefinition)
         {
             var result = a.Clone();
 
-            if (result.ContainsKey(objectType.Name))
-                result[objectType.Name] += objectType.Fields;
+            if (result.ContainsKey(ObjectDefinition.Name))
+                result[ObjectDefinition.Name] += ObjectDefinition.Fields;
             else
-                result[objectType.Name] = objectType.Fields;
+                result[ObjectDefinition.Name] = ObjectDefinition.Fields;
 
             return result;
         }
 
-        public static ObjectTypeMap operator -(ObjectTypeMap a, string name)
+        public static ResolversMap operator -(ResolversMap a, string name)
         {
             var result = a.Clone();
 
@@ -64,7 +64,7 @@ public ObjectTypeMap Clone()
             return result;
         }
 
-        public static ObjectTypeMap operator -(ObjectTypeMap a, ObjectTypeMap b)
+        public static ResolversMap operator -(ResolversMap a, ResolversMap b)
         {
             var result = a.Clone();
 
diff --git a/src/graphql/SDL/SchemaBuilderExtensions.cs b/src/graphql/SDL/SchemaBuilderExtensions.cs
deleted file mode 100644
index 0d32bfd25..000000000
--- a/src/graphql/SDL/SchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,27 +0,0 @@
-using System.Threading.Tasks;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.SchemaBuilding;
-
-namespace Tanka.GraphQL.SDL
-{
-    public static class SchemaBuilderExtensions
-    {
-        public static SchemaBuilder Sdl(this SchemaBuilder builder, string sdl)
-        {
-            return Sdl(builder, Parser.ParseTypeSystemDocument(sdl));
-        }
-
-        public static SchemaBuilder Sdl(this SchemaBuilder builder, TypeSystemDocument document)
-        {
-            var reader = new SchemaReader(document, builder);
-            reader.Read();
-            return builder;
-        }
-
-        public static async Task<SchemaBuilder> SdlAsync(this SchemaBuilder builder, string sdl)
-        {
-            var document = await Parser.ParseTypeSystemDocumentAsync(sdl, ParserOptions.Sdl);
-            return Sdl(builder, document);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SDL/SchemaPrinter.cs b/src/graphql/SDL/SchemaPrinter.cs
deleted file mode 100644
index 5b4e9618a..000000000
--- a/src/graphql/SDL/SchemaPrinter.cs
+++ /dev/null
@@ -1,493 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Argument = Tanka.GraphQL.TypeSystem.Argument;
-using EnumValue = Tanka.GraphQL.Language.Nodes.EnumValue;
-
-namespace Tanka.GraphQL.SDL
-{
-    public delegate bool TrySerializeValue(IType type, object value, out ValueBase? valueNode);
-
-    public class SchemaPrinterOptions
-    {
-        protected static IReadOnlyList<IType> IgnoredStandardTypes =
-            Enumerable.Empty<IType>()
-                .Concat(ScalarType.Standard.Select(t => t.Type))
-                .Concat(new IType[]
-                {
-                    DirectiveType.Skip,
-                    DirectiveType.Deprecated,
-                    DirectiveType.Include
-                })
-                .ToList();
-
-        public SchemaPrinterOptions(ISchema schema)
-        {
-            Schema = schema;
-            TrySerializeValue = TrySerializeValueDefault;
-        }
-
-        public ISchema Schema { get; set; }
-
-        public Func<IType, bool> ShouldPrintType { get; set; } =
-            type =>
-            {
-                if (IgnoredStandardTypes.Contains(type))
-                    return false;
-
-                if (type.Unwrap()?.Name.StartsWith("__") == true)
-                    return false;
-
-                return true;
-            };
-
-        public Func<DirectiveInstance, bool> ShouldPrintDirective { get; set; } =
-            directive => !directive.Name.StartsWith("__");
-
-        public Func<string, IField, bool> ShouldPrintField { get; set; } = (name, _) => !name.StartsWith("__");
-
-        public TrySerializeValue TrySerializeValue { get; set; }
-
-        public bool TrySerializeValueDefault(IType type, object value, out ValueBase? valueNode)
-        {
-            var actualType = type.Unwrap();
-            valueNode = actualType switch
-            {
-                InputObjectType inputObjectType => null,
-                ScalarType scalarType => Schema.GetValueConverter(scalarType.Name).SerializeLiteral(value),
-                IValueConverter converter => converter.SerializeLiteral(value),
-                _ => null
-            };
-
-            if (valueNode == null) return false;
-
-            return true;
-        }
-    }
-
-    public class SchemaPrinterContext
-    {
-        public SchemaPrinterContext(SchemaPrinterOptions options)
-        {
-            Options = options;
-        }
-
-        public SchemaPrinterOptions Options { get; }
-
-        public List<DirectiveDefinition> DirectiveDefinitions { get; } = new List<DirectiveDefinition>();
-
-        public List<SchemaDefinition> SchemaDefinitions { get; } = new List<SchemaDefinition>();
-
-        public List<SchemaExtension> SchemaExtensions { get; } = new List<SchemaExtension>();
-
-        public List<TypeDefinition> TypeDefinitions { get; } = new List<TypeDefinition>();
-
-        public List<TypeExtension> TypeExtensions { get; } = new List<TypeExtension>();
-
-        public TypeSystemDocument GetTypeSystemDocument()
-        {
-            return new TypeSystemDocument(
-                SchemaDefinitions.Any() ? SchemaDefinitions : null,
-                TypeDefinitions.Any() ? TypeDefinitions : null,
-                DirectiveDefinitions.Any() ? DirectiveDefinitions : null,
-                SchemaExtensions.Any() ? SchemaExtensions : null,
-                TypeExtensions.Any() ? TypeExtensions : null);
-        }
-    }
-
-    public class SchemaPrinter
-    {
-        private static readonly IReadOnlyList<string> RootTypeNames = new List<string>
-        {
-            "Query",
-            "Mutation",
-            "Subscription"
-        };
-
-        private SchemaPrinter(SchemaPrinterOptions options)
-        {
-            Context = new SchemaPrinterContext(options);
-        }
-
-        protected SchemaPrinterContext Context { get; }
-
-        protected SchemaPrinterOptions Options => Context.Options;
-
-        protected ISchema Schema => Options.Schema;
-
-        public static TypeSystemDocument Print(SchemaPrinterOptions options)
-        {
-            var printer = new SchemaPrinter(options);
-            return printer.Print(options.Schema);
-        }
-
-        public TypeSystemDocument Print(ISchema schema)
-        {
-            VisitSchema(schema);
-            return Context.GetTypeSystemDocument();
-        }
-
-        private void VisitSchema(ISchema schema)
-        {
-            foreach (var scalarType in schema.QueryTypes<ScalarType>())
-                VisitScalarType(scalarType);
-
-            foreach (var enumType in schema.QueryTypes<EnumType>())
-                VisitEnumType(enumType);
-
-            foreach (var scalarType in schema.QueryDirectiveTypes())
-                VisitDirectiveType(scalarType);
-
-            foreach (var inputType in schema.QueryTypes<InputObjectType>())
-                VisitInputObjectType(inputType);
-
-            foreach (var interfaceType in schema.QueryTypes<InterfaceType>())
-                VisitInterfaceType(interfaceType);
-
-            foreach (var objectType in schema.QueryTypes<ObjectType>(obj => !RootTypeNames.Contains(obj.Name)))
-                VisitObjectType(objectType);
-
-            foreach (var unionType in schema.QueryTypes<UnionType>()) VisitUnionType(unionType);
-
-
-            var rootOperationTypeDefs = new List<RootOperationTypeDefinition>();
-            if (schema.Query != null)
-            {
-                var fields = Schema.GetFields(schema.Query.Name);
-
-                if (fields.Any(
-                    f => Options.ShouldPrintField(f.Key, f.Value)))
-                {
-                    VisitObjectType(schema.Query);
-                    rootOperationTypeDefs.Add(
-                        new RootOperationTypeDefinition(
-                            OperationType.Query,
-                            new NamedType(schema.Query.Name)));
-                }
-            }
-
-            if (schema.Mutation != null)
-            {
-                var fields = Schema.GetFields(schema.Mutation.Name);
-
-                if (fields.Any(
-                    f => Options.ShouldPrintField(f.Key, f.Value)))
-                {
-                    VisitObjectType(schema.Mutation);
-                    rootOperationTypeDefs.Add(
-                        new RootOperationTypeDefinition(
-                            OperationType.Mutation,
-                            new NamedType(schema.Mutation.Name)));
-                }
-            }
-
-            if (schema.Subscription != null)
-            {
-                var fields = Schema.GetFields(schema.Subscription.Name);
-
-                if (fields.Any(
-                    f => Options.ShouldPrintField(f.Key, f.Value)))
-                {
-                    VisitObjectType(schema.Subscription);
-                    rootOperationTypeDefs.Add(
-                        new RootOperationTypeDefinition(
-                            OperationType.Subscription,
-                            new NamedType(schema.Subscription.Name)));
-                }
-            }
-
-            if (rootOperationTypeDefs.Any())
-                Context.SchemaDefinitions.Add(new SchemaDefinition(
-                    null,
-                    Directives(schema.Directives),
-                    new RootOperationTypeDefinitions(rootOperationTypeDefs)));
-        }
-
-        private void VisitUnionType(UnionType unionType)
-        {
-            if (!Options.ShouldPrintType(unionType))
-                return;
-
-            var possibleTypes = Schema.GetPossibleTypes(unionType)
-                .Select(t => new NamedType(t.Name))
-                .ToList();
-
-            Context.TypeDefinitions.Add(new UnionDefinition(
-                    unionType.Description,
-                    unionType.Name,
-                    Directives(unionType.Directives),
-                    possibleTypes.Any() ? new UnionMemberTypes(possibleTypes) : null
-                )
-            );
-        }
-
-        private void VisitObjectType(ObjectType objectType)
-        {
-            if (!Options.ShouldPrintType(objectType))
-                return;
-
-            var implements = Implements(objectType.Interfaces.ToList());
-            var fields = FieldsDefinition(objectType);
-            var objectNode = new ObjectDefinition(
-                objectType.Description,
-                objectType.Name,
-                implements,
-                Directives(objectType.Directives),
-                fields
-            );
-
-            Context.TypeDefinitions.Add(objectNode);
-        }
-
-        private void VisitInterfaceType(InterfaceType interfaceType)
-        {
-            if (!Options.ShouldPrintType(interfaceType))
-                return;
-
-            var interfaceNode = new InterfaceDefinition(
-                interfaceType.Description,
-                interfaceType.Name,
-                null, //todo: interfaces implementing interfaces
-                Directives(interfaceType.Directives),
-                FieldsDefinition(interfaceType)
-            );
-
-            Context.TypeDefinitions.Add(interfaceNode);
-        }
-
-        private ImplementsInterfaces? Implements(IReadOnlyList<InterfaceType> interfaces)
-        {
-            if (!interfaces.Any())
-                return null;
-
-            var namedTypes = new List<NamedType>();
-
-            foreach (var interfaceType in interfaces)
-                namedTypes.Add(interfaceType.Name);
-
-            return new ImplementsInterfaces(namedTypes);
-        }
-
-        private void VisitEnumType(EnumType enumType)
-        {
-            if (!Options.ShouldPrintType(enumType))
-                return;
-
-            var enumValues = enumType
-                .Values
-                .Select(v => new EnumValueDefinition(
-                    v.Value.Description,
-                    new EnumValue(v.Key),
-                    Directives(v.Value.Directives)))
-                .ToList();
-
-            var enumNode = new EnumDefinition(
-                enumType.Description,
-                enumType.Name,
-                Directives(enumType.Directives),
-                enumValues.Any() ? new EnumValuesDefinition(enumValues) : null
-            );
-
-            Context.TypeDefinitions.Add(enumNode);
-        }
-
-        private void VisitInputObjectType(InputObjectType inputObjectType)
-        {
-            if (!Options.ShouldPrintType(inputObjectType))
-                return;
-
-            var fields = InputFieldsDefinition(Schema.GetInputFields(inputObjectType.Name).ToList());
-            var inputNode = new InputObjectDefinition(
-                inputObjectType.Description,
-                inputObjectType.Name,
-                Directives(inputObjectType.Directives),
-                fields
-            );
-
-            Context.TypeDefinitions.Add(inputNode);
-        }
-
-        private void VisitDirectiveType(DirectiveType directiveType)
-        {
-            if (!Options.ShouldPrintType(directiveType))
-                return;
-
-            var directiveNode = new DirectiveDefinition(
-                directiveType.Description,
-                directiveType.Name,
-                ArgumentDefinitions(directiveType.Arguments.ToList()),
-                false,
-                directiveType.Locations.Select(l => l.ToString()).ToList()
-            );
-
-            Context.DirectiveDefinitions.Add(directiveNode);
-        }
-
-        private ArgumentsDefinition? ArgumentDefinitions(IReadOnlyList<KeyValuePair<string, Argument>>? arguments)
-        {
-            if (arguments == null || !arguments.Any())
-                return null;
-
-            var args = new List<InputValueDefinition>();
-
-            foreach (var (name, arg) in arguments)
-            {
-                var inputValueDefinition = new InputValueDefinition(
-                    arg.Description,
-                    name,
-                    Type(arg.Type),
-                    DefaultValue(arg.Type, arg.DefaultValue),
-                    null
-                );
-
-                args.Add(inputValueDefinition);
-            }
-
-
-            return new ArgumentsDefinition(args);
-        }
-
-        private void VisitScalarType(ScalarType scalarType)
-        {
-            if (!Options.ShouldPrintType(scalarType))
-                return;
-
-            var scalarNode = new ScalarDefinition(
-                scalarType.Description,
-                scalarType.Name,
-                Directives(scalarType.Directives)
-            );
-
-            Context.TypeDefinitions.Add(scalarNode);
-        }
-
-        private Language.Nodes.Directives? Directives(IEnumerable<DirectiveInstance>? directives)
-        {
-            if (directives == null)
-                return null;
-
-            var directiveNodes = new List<Directive>();
-            foreach (var directive in directives)
-            {
-                if (!Options.ShouldPrintDirective(directive))
-                    continue;
-
-                directiveNodes.Add(new Directive(
-                    directive.Name,
-                    Arguments(directive))
-                );
-            }
-
-            if (!directiveNodes.Any())
-                return null;
-
-            return new Language.Nodes.Directives(directiveNodes);
-        }
-
-        private Arguments? Arguments(DirectiveInstance directiveInstance)
-        {
-            var directiveType = Context.Options.Schema
-                .GetDirectiveType(directiveInstance.Name);
-
-            var args = new List<Language.Nodes.Argument>();
-            foreach (var (name, arg) in directiveType.Arguments)
-                if (directiveInstance.Arguments.TryGetValue(name, out var argValue))
-                {
-                    var valueNode = SerializeValue(
-                        arg.Type,
-                        argValue
-                    );
-
-                    args.Add(new Language.Nodes.Argument(name, valueNode));
-                }
-
-            return new Arguments(args);
-        }
-
-        private InputFieldsDefinition? InputFieldsDefinition(
-            IReadOnlyList<KeyValuePair<string, InputObjectField>> inputFields)
-        {
-            if (!inputFields.Any())
-                return null;
-
-            var args = new List<InputValueDefinition>();
-
-            foreach (var (name, field) in inputFields)
-            {
-                var inputValueDefinition = new InputValueDefinition(
-                    field.Description,
-                    name,
-                    Type(field.Type),
-                    DefaultValue(field.Type, field.DefaultValue),
-                    null
-                );
-
-                args.Add(inputValueDefinition);
-            }
-
-            return new InputFieldsDefinition(args);
-        }
-
-        private FieldsDefinition? FieldsDefinition(ComplexType type)
-        {
-            var fields = Schema.GetFields(type.Name)
-                .ToList();
-
-            if (!fields.Any())
-                return null;
-
-            var fieldNodes = new List<FieldDefinition>(fields.Count);
-
-            foreach (var (name, field) in fields)
-            {
-                if (!Options.ShouldPrintField(name, field))
-                    continue;
-
-                var fieldDefinition = new FieldDefinition(
-                    field.Description,
-                    name,
-                    ArgumentDefinitions(field.Arguments.ToList()),
-                    Type(field.Type),
-                    Directives(field.Directives)
-                );
-
-                fieldNodes.Add(fieldDefinition);
-            }
-
-            return new FieldsDefinition(fieldNodes);
-        }
-
-        private ValueBase SerializeValue(IType type, object? value)
-        {
-            if (value == null)
-                return new NullValue(); // what if type is nonNull?
-
-            if (Options.TrySerializeValue(type, value, out var serializedValue))
-                return serializedValue;
-
-            throw new InvalidOperationException($"Cannot serialize value '{value}' of type '{type}'.");
-        }
-
-        private DefaultValue DefaultValue(IType type, object? defaultValue)
-        {
-            return new DefaultValue(SerializeValue(type, defaultValue));
-        }
-
-        private TypeBase Type(IType type)
-        {
-            if (type is NonNull nonNull)
-                return new NonNullType(Type(nonNull.OfType));
-
-            if (type is List list)
-                return new ListType(Type(list.OfType));
-
-            var namedType = type.Unwrap();
-
-            return new NamedType(namedType.Name);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SDL/SchemaReader.cs b/src/graphql/SDL/SchemaReader.cs
deleted file mode 100644
index c839b03df..000000000
--- a/src/graphql/SDL/SchemaReader.cs
+++ /dev/null
@@ -1,548 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SDL
-{
-    public class SchemaReader
-    {
-        private readonly List<Action<SchemaBuilder>> _afterTypeDefinitions = new List<Action<SchemaBuilder>>();
-        private readonly SchemaBuilder _builder;
-        private readonly TypeSystemDocument _document;
-
-        public SchemaReader(TypeSystemDocument document, SchemaBuilder? builder = null)
-        {
-            _document = document;
-            _builder = builder ?? new SchemaBuilder();
-        }
-
-        public SchemaBuilder Read()
-        {
-            if (_document.DirectiveDefinitions != null)
-                foreach (var directiveDefinition in _document.DirectiveDefinitions)
-                    DirectiveType(directiveDefinition);
-
-            var definitions = _document.TypeDefinitions ?? Array.Empty<TypeDefinition>();
-
-            foreach (var definition in definitions.OfType<ScalarDefinition>())
-                Scalar(definition);
-
-            foreach (var definition in definitions.OfType<InputObjectDefinition>())
-                InputObject(definition);
-
-            foreach (var definition in definitions.OfType<EnumDefinition>())
-                Enum(definition);
-
-            foreach (var definition in definitions.OfType<InterfaceDefinition>())
-                Interface(definition);
-
-            foreach (var definition in definitions.OfType<ObjectDefinition>())
-                Object(definition);
-
-            foreach (var definition in definitions.OfType<UnionDefinition>())
-                Union(definition);
-
-            if (_document.TypeExtensions != null)
-                foreach (var definition in _document.TypeExtensions)
-                    Extend(definition);
-
-            foreach (var action in _afterTypeDefinitions) action(_builder);
-
-            var schemaDefinition = _document
-                .SchemaDefinitions
-                ?.SingleOrDefault();
-
-            if (schemaDefinition?.Directives != null)
-            {
-                var directives = Directives(schemaDefinition.Directives);
-                _builder.Schema(
-                    schemaDefinition.Description,
-                    directives);
-            }
-
-            return _builder;
-        }
-
-        protected ScalarType Scalar(ScalarDefinition definition)
-        {
-            _builder.Scalar(
-                definition.Name,
-                out var scalar,
-                definition.Description,
-                Directives(definition.Directives));
-
-            return scalar;
-        }
-
-        protected DirectiveType DirectiveType(DirectiveDefinition definition)
-        {
-            var locations = definition
-                .DirectiveLocations
-                .Select(location =>
-                    (DirectiveLocation) System.Enum.Parse(typeof(DirectiveLocation), location))
-                .ToList();
-
-            var args = Args(definition.Arguments).ToList();
-
-            _builder.DirectiveType(
-                definition.Name,
-                out var directiveType,
-                locations,
-                definition.Description,
-                argsBuilder => args.ForEach(a => argsBuilder.Arg(a.Name, a.Type, a.DefaultValue, a.Description)));
-
-            return directiveType;
-        }
-
-        protected IEnumerable<(string Name, IType Type, object DefaultValue, string Description)> Args(
-            IEnumerable<InputValueDefinition>? definitions)
-        {
-            var args = new List<(string Name, IType Type, object DefaultValue, string Description)>();
-
-            if (definitions == null)
-                return args;
-
-            foreach (var definition in definitions)
-            {
-                var type = InputType(definition.Type);
-                object? defaultValue = null;
-
-                try
-                {
-                    _builder.Connections(connections =>
-                    {
-                        defaultValue = Values.CoerceValue(
-                            connections.GetInputFields,
-                            _builder.GetValueConverter,
-                            definition.DefaultValue?.Value,
-                            type);
-                    });
-                }
-                catch (Exception)
-                {
-                    //todo: this behaviour is bit shade...
-                    defaultValue = null;
-                }
-
-                args.Add((definition.Name, type, defaultValue, definition.Description));
-            }
-
-            return args;
-        }
-
-        protected IType InputType(TypeBase type)
-        {
-            if (type.Kind == NodeKind.NonNullType)
-            {
-                var innerType = InputType(((NonNullType) type).OfType);
-                return new NonNull(innerType);
-            }
-
-            if (type.Kind == NodeKind.ListType)
-            {
-                var innerType = InputType(((ListType) type).OfType);
-                return new List(innerType);
-            }
-
-            var namedTypeDefinition = (NamedType) type;
-            var typeName = namedTypeDefinition.Name;
-
-            // is type already known by the builder?
-            if (_builder.TryGetType<INamedType>(typeName, out var knownType))
-                return knownType;
-
-            // type is not known so we need to get the
-            // definition and build it
-            var definition = _document.TypeDefinitions!
-                .InputType(typeName);
-
-            if (definition == null)
-                throw new InvalidOperationException(
-                    $"Could not find a input type definition '{typeName}'.");
-
-            switch (definition)
-            {
-                case ScalarDefinition scalarTypeDefinition:
-                    return Scalar(scalarTypeDefinition);
-                case EnumDefinition enumTypeDefinition:
-                    return Enum(enumTypeDefinition);
-                case InputObjectDefinition inputObjectTypeDefinition:
-                    return InputObject(inputObjectTypeDefinition);
-            }
-
-            // we should not come here ever
-            return null;
-        }
-
-        protected IType OutputType(TypeBase type)
-        {
-            if (type.Kind == NodeKind.NonNullType)
-            {
-                var innerType = OutputType(((NonNullType) type).OfType);
-                return new NonNull(innerType);
-            }
-
-            if (type.Kind == NodeKind.ListType)
-            {
-                var innerType = OutputType(((ListType) type).OfType);
-                return new List(innerType);
-            }
-
-            var namedTypeDefinition = (NamedType) type;
-            var typeName = namedTypeDefinition.Name;
-
-            // is type already known by the builder?
-            if (_builder.TryGetType<INamedType>(typeName, out var knownType))
-                return knownType;
-
-            // type is not known so we need to get the
-            // definition and build it
-            var definition = _document.TypeDefinitions!
-                .OutputType(typeName);
-
-            if (definition == null)
-                throw new InvalidOperationException(
-                    $"Could not find a output type definition '{typeName}'.");
-
-            switch (definition)
-            {
-                case ScalarDefinition scalarTypeDefinition:
-                    return Scalar(scalarTypeDefinition);
-                case EnumDefinition enumTypeDefinition:
-                    return Enum(enumTypeDefinition);
-                case ObjectDefinition objectType:
-                    return Object(objectType);
-                case InterfaceDefinition interfaceType:
-                    return Interface(interfaceType);
-                case UnionDefinition unionType:
-                    return Union(unionType);
-            }
-
-            return null;
-        }
-
-        protected EnumType Enum(EnumDefinition definition)
-        {
-            if (_builder.TryGetType<EnumType>(definition.Name, out var enumType))
-                return enumType;
-
-            var directives = Directives(definition.Directives);
-
-            _builder.Enum(definition.Name, out enumType,
-                directives: directives,
-                description: definition.Description,
-                values: values =>
-                    definition.Values.ToList()
-                        .ForEach(value => values.Value(
-                            value.Value.Name,
-                            string.Empty,
-                            Directives(value.Directives),
-                            null)));
-
-            return enumType;
-        }
-
-        protected IEnumerable<DirectiveInstance> Directives(
-            IEnumerable<Directive>? directives)
-        {
-            if (directives == null)
-                yield break;
-
-            foreach (var directive in directives)
-            foreach (var directiveInstance in DirectiveInstance(directive))
-                yield return directiveInstance;
-        }
-
-        protected IEnumerable<DirectiveInstance> DirectiveInstance(
-            Directive directiveDefinition)
-        {
-            var name = directiveDefinition.Name;
-
-            _builder.TryGetDirective(name, out var directiveType);
-
-            if (directiveType == null)
-                throw new DocumentException(
-                    $"Could not find DirectiveType with name '{name}'",
-                    directiveDefinition);
-
-            var arguments = new Dictionary<string, object?>();
-            foreach (var argument in directiveType.Arguments)
-            {
-                var type = argument.Value.Type;
-                var defaultValue = argument.Value.DefaultValue;
-
-                var definition = directiveDefinition.Arguments?
-                    .SingleOrDefault(a => a.Name == argument.Key);
-
-                var hasValue = definition != null;
-                var value = definition?.Value;
-
-                if (!hasValue && defaultValue != null)
-                {
-                    arguments.Add(argument.Key, defaultValue);
-                    continue;
-                }
-
-                if (type is NonNull
-                    && (!hasValue || value == null))
-                    throw new ValueCoercionException(
-                        $"Argument {argument.Key} type is non-nullable but value is null or not set",
-                        null,
-                        directiveType);
-
-                _builder.Connections(connect =>
-                {
-                    if (hasValue)
-                        arguments.Add(argument.Key,
-                            value == null
-                                ? defaultValue
-                                : Values.CoerceValue(
-                                    connect.GetInputFields,
-                                    _builder.GetValueConverter,
-                                    value,
-                                    type));
-                });
-            }
-
-            yield return directiveType.CreateInstance(arguments);
-        }
-
-        protected InputObjectType InputObject(InputObjectDefinition definition)
-        {
-            if (_builder.TryGetType<InputObjectType>(definition.Name, out var inputObject)) return inputObject;
-
-            var directives = Directives(definition.Directives);
-            _builder.InputObject(
-                definition.Name,
-                out inputObject,
-                definition.Description?.ToString(),
-                directives);
-
-            _builder.Connections(connect =>
-            {
-                var fields = InputValues(definition.Fields);
-                foreach (var inputField in fields)
-                    connect.InputField(
-                        inputObject,
-                        inputField.Key,
-                        inputField.Value.Type,
-                        inputField.Value.DefaultValue,
-                        inputField.Value.Description,
-                        inputField.Value.Directives);
-            });
-
-            return inputObject;
-        }
-
-        protected InputFields InputValues(IEnumerable<InputValueDefinition>? definitions)
-        {
-            var fields = new InputFields();
-
-            if (definitions == null)
-                return fields;
-
-            foreach (var definition in definitions)
-            {
-                var type = InputType(definition.Type);
-
-                if (!TypeIs.IsInputType(type))
-                    throw new DocumentException(
-                        "Type of input value definition is not valid input value type. " +
-                        $"Definition: '{definition.Name}' Type: {definition.Type.Kind}");
-
-                object? defaultValue = default;
-
-                _builder.Connections(connect =>
-                {
-                    try
-                    {
-                        defaultValue = Values.CoerceValue(
-                            connect.GetInputFields,
-                            _builder.GetValueConverter,
-                            definition.DefaultValue?.Value,
-                            type);
-                    }
-                    catch (Exception)
-                    {
-                        defaultValue = null;
-                    }
-                });
-
-                var directives = Directives(definition.Directives);
-
-                switch (type)
-                {
-                    case ScalarType scalarType:
-                        fields[definition.Name] = new InputObjectField(
-                            scalarType,
-                            string.Empty,
-                            defaultValue,
-                            directives);
-                        break;
-                    case EnumType enumType:
-                        fields[definition.Name] = new InputObjectField(
-                            enumType,
-                            string.Empty,
-                            defaultValue,
-                            directives);
-                        break;
-                    case InputObjectType inputObjectType:
-                        fields[definition.Name] = new InputObjectField(
-                            inputObjectType,
-                            string.Empty,
-                            defaultValue,
-                            directives);
-                        break;
-                    case NonNull nonNull:
-                        fields[definition.Name] = new InputObjectField(
-                            nonNull,
-                            string.Empty,
-                            defaultValue,
-                            directives);
-                        break;
-                    case List list:
-                        fields[definition.Name] = new InputObjectField(
-                            list,
-                            string.Empty,
-                            defaultValue,
-                            directives);
-                        break;
-                }
-            }
-
-            return fields;
-        }
-
-        protected InterfaceType Interface(InterfaceDefinition definition)
-        {
-            if (_builder.TryGetType<InterfaceType>(definition.Name, out var interfaceType))
-                return interfaceType;
-
-            if (definition?.Interfaces != null && definition.Interfaces.Any())
-                throw new NotSupportedException(
-                    $"Cannot read type '{definition.Name}'. Interfaces implementing interfaces is not currently supported");
-
-            var directives = Directives(definition.Directives);
-
-            _builder.Interface(definition.Name, out interfaceType,
-                directives: directives,
-                description: definition.Description);
-
-            AfterTypeDefinitions(_ => { Fields(interfaceType, definition.Fields); });
-
-            return interfaceType;
-        }
-
-        protected ObjectType Object(ObjectDefinition definition)
-        {
-            if (_builder.TryGetType<ObjectType>(definition.Name, out var objectType)) return objectType;
-
-            var directives = Directives(definition.Directives);
-            var interfaces = Interfaces(definition.Interfaces);
-
-            _builder.Object(definition.Name, out objectType,
-                interfaces: interfaces,
-                directives: directives,
-                description: definition.Description);
-
-            AfterTypeDefinitions(_ => { Fields(objectType, definition.Fields); });
-
-            return objectType;
-        }
-
-        protected void Extend(TypeExtension extension)
-        {
-            AfterTypeDefinitions(_ =>
-            {
-                if (extension.ExtendedKind != NodeKind.ObjectDefinition)
-                    throw new Exception("Only object type extensions supported");
-
-                if (!_builder.TryGetType<ObjectType>(extension.Name, out var type))
-                    throw new InvalidOperationException(
-                        $"Cannot extend type '{extension.Name}'. Type to extend not found.");
-
-                var objectDefinition = (ObjectDefinition) extension.Definition;
-                Fields(type, objectDefinition.Fields);
-            });
-        }
-
-        private void AfterTypeDefinitions(Action<SchemaBuilder> action)
-        {
-            _afterTypeDefinitions.Add(action);
-        }
-
-        private UnionType Union(UnionDefinition definition)
-        {
-            if (_builder.TryGetType<UnionType>(definition.Name, out var unionType))
-                return unionType;
-
-            var possibleTypes = new List<ObjectType>();
-            if (definition.Members != null)
-                foreach (var astType in definition.Members)
-                {
-                    var type = (ObjectType) OutputType(astType);
-                    possibleTypes.Add(type);
-                }
-
-            var directives = Directives(definition.Directives);
-            _builder.Union(
-                definition.Name,
-                out unionType,
-                definition.Description,
-                directives,
-                possibleTypes.ToArray());
-
-            return unionType;
-        }
-
-        private IEnumerable<InterfaceType> Interfaces(IEnumerable<NamedType> definitions)
-        {
-            var interfaces = new List<InterfaceType>();
-
-            if (definitions == null)
-                return Enumerable.Empty<InterfaceType>();
-
-            foreach (var namedType in definitions)
-            {
-                if (!(OutputType(namedType) is InterfaceType type))
-                    continue;
-
-                interfaces.Add(type);
-            }
-
-            return interfaces;
-        }
-
-        private void Fields(ComplexType owner, IEnumerable<FieldDefinition>? definitions)
-        {
-            if (definitions == null)
-                return;
-
-            foreach (var definition in definitions)
-            {
-                var type = OutputType(definition.Type);
-                var name = definition.Name;
-                var args = Args(definition.Arguments).ToList();
-                var directives = Directives(definition.Directives);
-
-                _builder.Connections(connect => connect
-                    .Field(
-                        owner,
-                        name,
-                        type,
-                        default,
-                        null,
-                        null,
-                        directives,
-                        argsBuilder => args.ForEach(a =>
-                            argsBuilder.Arg(a.Name, a.Type, a.DefaultValue, a.Description))));
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SDL/TypeDefinitionEnumerableExtensions.cs b/src/graphql/SDL/TypeDefinitionEnumerableExtensions.cs
deleted file mode 100644
index 78dc70247..000000000
--- a/src/graphql/SDL/TypeDefinitionEnumerableExtensions.cs
+++ /dev/null
@@ -1,60 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-
-namespace Tanka.GraphQL.SDL
-{
-    public static class TypeDefinitionEnumerableExtensions
-    {
-        private static readonly IReadOnlyCollection<NodeKind> InputTypeKinds = new List<NodeKind>
-        {
-            NodeKind.InputObjectDefinition,
-            NodeKind.ScalarDefinition,
-            NodeKind.EnumDefinition
-        };
-
-
-        public static TypeDefinition? InputType(
-            this IEnumerable<TypeDefinition> definitions,
-            string name)
-        {
-            foreach (var inputDefinition in definitions.Where(def => InputTypeKinds.Contains(def.Kind)))
-                switch (inputDefinition)
-                {
-                    case InputObjectDefinition inputObject when inputObject.Name == name:
-                        return inputObject;
-                    case ScalarDefinition scalarType when scalarType.Name == name:
-                        return scalarType;
-                    case EnumDefinition enumType when enumType.Name == name:
-                        return enumType;
-                }
-
-            return null;
-        }
-
-        public static TypeDefinition OutputType(
-            this IEnumerable<TypeDefinition> definitions,
-            string name)
-        {
-            foreach (var inputDefinition in definitions)
-                switch (inputDefinition)
-                {
-                    case InputObjectDefinition inputObject when inputObject.Name == name:
-                        return inputObject;
-                    case ScalarDefinition scalarType when scalarType.Name == name:
-                        return scalarType;
-                    case EnumDefinition enumType when enumType.Name == name:
-                        return enumType;
-                    case ObjectDefinition objectType when objectType.Name == name:
-                        return objectType;
-                    case InterfaceDefinition interfaceType when interfaceType.Name == name:
-                        return interfaceType;
-                    case UnionDefinition unionType when unionType.Name == name:
-                        return unionType;
-                }
-
-            return null;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ArgsBuilder.cs b/src/graphql/SchemaBuilding/ArgsBuilder.cs
deleted file mode 100644
index 641589008..000000000
--- a/src/graphql/SchemaBuilding/ArgsBuilder.cs
+++ /dev/null
@@ -1,24 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public class ArgsBuilder
-    {
-        private readonly Args _args = new Args();
-
-        public ArgsBuilder Arg(
-            string name, 
-            IType type, 
-            object defaultValue, 
-            string description)
-        {
-            _args.Add(name, type, defaultValue, description);
-            return this;
-        }
-
-        public Args Build()
-        {
-            return _args;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.Build.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.Build.cs
deleted file mode 100644
index f5cf8ed03..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.Build.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        public (
-            IReadOnlyDictionary<string, Dictionary<string, IField>> _fields,
-            IReadOnlyDictionary<string, Dictionary<string, InputObjectField>> _inputFields,
-            IReadOnlyDictionary<string, Dictionary<string, ResolverBuilder>> _resolvers,
-            IReadOnlyDictionary<string, Dictionary<string, SubscriberBuilder>> _subscribers) Build()
-        {
-            return (
-                _fields,
-                _inputFields,
-                _resolvers,
-                _subscribers);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.Ensure.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.Ensure.cs
deleted file mode 100644
index 35c7c55a5..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.Ensure.cs
+++ /dev/null
@@ -1,40 +0,0 @@
-using System;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        public void EnsureTypeKnown(IType type)
-        {
-            var unwrappedType = type.Unwrap();
-
-            if (unwrappedType == null)
-                throw new SchemaBuilderException(
-                    string.Empty,
-                    $"Unwrapping type {type} not possible");
-
-            if (!Builder.TryGetType<INamedType>(unwrappedType.Name, out _))
-            {
-                throw new SchemaBuilderException(
-                    unwrappedType.Name,
-                    $"Type {unwrappedType} is not known by the builder.");
-            }
-        }
-
-        public void EnsureDirectiveKnown(DirectiveInstance instance)
-        {
-            EnsureDirectiveKnown(instance.Type);
-        }
-
-        public void EnsureDirectiveKnown(DirectiveType type)
-        {
-            if (!Builder.TryGetDirective(type.Name, out _))
-            {
-                throw new SchemaBuilderException(
-                    type.Name,
-                    $"Directive {type} is not known by the builder.");
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.Get.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.Get.cs
deleted file mode 100644
index 12d5be61a..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.Get.cs
+++ /dev/null
@@ -1,103 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
-using ComplexType = Tanka.GraphQL.TypeSystem.ComplexType;
-using IField = Tanka.GraphQL.TypeSystem.IField;
-using InputObjectField = Tanka.GraphQL.TypeSystem.InputObjectField;
-using InputObjectType = Tanka.GraphQL.TypeSystem.InputObjectType;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        public bool TryGetField(TypeSystem.ComplexType owner, string fieldName, out TypeSystem.IField field)
-        {
-            if (_fields.TryGetValue(owner.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out field))
-                    return true;
-
-            field = null;
-            return false;
-        }
-
-        public bool TryGetInputField(TypeSystem.InputObjectType owner, string fieldName, out TypeSystem.InputObjectField field)
-        {
-            if (_inputFields.TryGetValue(owner.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out field))
-                    return true;
-
-            field = null;
-            return false;
-        }
-
-        public IEnumerable<KeyValuePair<string, TypeSystem.IField>> GetFields(TypeSystem.ComplexType type)
-        {
-            if (type == null) throw new ArgumentNullException(nameof(type));
-
-            if (!_fields.TryGetValue(type.Name, out var fields))
-                return Enumerable.Empty<KeyValuePair<string, TypeSystem.IField>>();
-
-            return fields;
-        }
-
-        public IEnumerable<KeyValuePair<string, TypeSystem.InputObjectField>> GetInputFields(TypeSystem.InputObjectType type)
-        {
-            if (type == null) throw new ArgumentNullException(nameof(type));
-
-            if (!_inputFields.TryGetValue(type.Name, out var fields))
-                return Enumerable.Empty<KeyValuePair<string, TypeSystem.InputObjectField>>();
-
-            return fields;
-        }
-
-        public ResolverBuilder GetOrAddResolver(TypeSystem.ComplexType type, string fieldName)
-        {
-            if (_resolvers.TryGetValue(type.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out var builder))
-                    return builder;
-
-            return Resolver(type, fieldName);
-        }
-
-        public SubscriberBuilder GetOrAddSubscriber(TypeSystem.ComplexType type, string fieldName)
-        {
-            if (_subscribers.TryGetValue(type.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out var builder))
-                    return builder;
-
-            return Subscriber(type, fieldName);
-        }
-
-        public bool TryGetResolver(TypeSystem.ComplexType type, string fieldName, out ResolverBuilder resolver)
-        {
-            if (_resolvers.TryGetValue(type.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out resolver))
-                    return true;
-
-            resolver = null;
-            return false;
-        }
-
-        public bool TryGetSubscriber(TypeSystem.ComplexType type, string fieldName, out SubscriberBuilder subscriber)
-        {
-            if (_subscribers.TryGetValue(type.Name, out var fields))
-                if (fields.TryGetValue(fieldName, out subscriber))
-                    return true;
-
-            subscriber = null;
-            return false;
-        }
-
-        internal IEnumerable<KeyValuePair<string, TypeSystem.InputObjectField>> GetInputFields(string type)
-        {
-            if (Builder.TryGetType<TypeSystem.InputObjectType>(type, out var inputType))
-                return GetInputFields(inputType);
-
-            throw new DocumentException(
-                $"Input type '{type}' is not known by the builder.");
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.Include.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.Include.cs
deleted file mode 100644
index 8842418de..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.Include.cs
+++ /dev/null
@@ -1,114 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        public ConnectionBuilder Include(
-            ComplexType owner,
-            IEnumerable<KeyValuePair<string, IField>> fields)
-        {
-            EnsureTypeKnown(owner);
-
-            if (!_fields.ContainsKey(owner.Name))
-                _fields[owner.Name] = new Dictionary<string, IField>();
-
-            foreach (var field in fields)
-                Include(owner, field);
-
-            return this;
-        }
-
-        public ConnectionBuilder Include(
-            ComplexType owner,
-            KeyValuePair<string, IField> field)
-        {
-            EnsureTypeKnown(owner);
-            EnsureTypeKnown(field.Value.Type);
-
-            foreach (var argument in field.Value.Arguments)
-            {
-                EnsureTypeKnown(argument.Value.Type);
-            }
-
-            foreach (var directive in field.Value.Directives)
-            {
-                EnsureDirectiveKnown(directive);
-            }
-
-            if (!_fields.ContainsKey(owner.Name))
-                _fields[owner.Name] = new Dictionary<string, IField>();
-
-            _fields[owner.Name].Add(field.Key, field.Value);
-
-
-            return this;
-        }
-
-        public ConnectionBuilder Include(
-            InputObjectType owner,
-            IEnumerable<KeyValuePair<string, InputObjectField>> fields)
-        {
-            EnsureTypeKnown(owner);
-
-            if (!_inputFields.ContainsKey(owner.Name))
-                _inputFields[owner.Name] = new Dictionary<string, InputObjectField>();
-
-            foreach (var field in fields)
-                Include(owner, field);
-
-            return this;
-        }
-
-        public ConnectionBuilder Include(
-            InputObjectType owner,
-            KeyValuePair<string, InputObjectField> field)
-        {
-            EnsureTypeKnown(owner);
-            EnsureTypeKnown(field.Value.Type);
-
-            foreach (var directive in field.Value.Directives)
-            {
-                EnsureDirectiveKnown(directive);
-            }
-
-            if (!_inputFields.ContainsKey(owner.Name))
-                _inputFields[owner.Name] = new Dictionary<string, InputObjectField>();
-
-            _inputFields[owner.Name].Add(field.Key, field.Value);
-
-            return this;
-        }
-
-        public ConnectionBuilder Include(
-            ObjectType objectType,
-            string fieldName,
-            ResolverBuilder resolver)
-        {
-            if (_resolvers.TryGetValue(objectType.Name, out var fieldResolvers))
-                fieldResolvers.Add(fieldName, resolver);
-            else
-                throw new ArgumentOutOfRangeException(nameof(objectType),
-                    $"Cannot include resolver. Unknown type '{objectType.Name}'.");
-
-            return this;
-        }
-
-        public ConnectionBuilder Include(
-            ObjectType objectType,
-            string fieldName,
-            SubscriberBuilder subscriber)
-        {
-            if (_subscribers.TryGetValue(objectType.Name, out var subscriberBuilders))
-                subscriberBuilders.Add(fieldName, subscriber);
-            else
-                throw new ArgumentOutOfRangeException(nameof(objectType),
-                    $"Cannot include subscriber. Unknown type '{objectType.Name}'.");
-
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.Remove.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.Remove.cs
deleted file mode 100644
index 48494a087..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.Remove.cs
+++ /dev/null
@@ -1,33 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        public ConnectionBuilder Remove(ComplexType complexType, string fieldName)
-        {
-            if (_fields.TryGetValue(complexType.Name, out var fields))
-                if (fields.ContainsKey(fieldName))
-                    fields.Remove(fieldName);
-
-            if (_resolvers.TryGetValue(complexType.Name, out var fieldResolvers))
-                if (fieldResolvers.TryGetValue(fieldName, out _))
-                    fieldResolvers.Remove(fieldName);
-
-            if (_subscribers.TryGetValue(complexType.Name, out var fieldSubscribers))
-                if (fieldSubscribers.TryGetValue(fieldName, out _))
-                    fieldSubscribers.Remove(fieldName);
-
-            return this;
-        }
-
-        public ConnectionBuilder Remove(InputObjectType inputObject, string fieldName)
-        {
-            if (_inputFields.TryGetValue(inputObject.Name, out var fields))
-                if (fields.ContainsKey(fieldName))
-                    fields.Remove(fieldName);
-
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/ConnectionBuilder.cs b/src/graphql/SchemaBuilding/ConnectionBuilder.cs
deleted file mode 100644
index 4388ff46f..000000000
--- a/src/graphql/SchemaBuilding/ConnectionBuilder.cs
+++ /dev/null
@@ -1,149 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class ConnectionBuilder
-    {
-        private readonly Dictionary<string, Dictionary<string, IField>> _fields =
-            new Dictionary<string, Dictionary<string, IField>>();
-
-        private readonly Dictionary<string, Dictionary<string, InputObjectField>> _inputFields =
-            new Dictionary<string, Dictionary<string, InputObjectField>>();
-
-        private readonly Dictionary<string, Dictionary<string, ResolverBuilder>> _resolvers =
-            new Dictionary<string, Dictionary<string, ResolverBuilder>>();
-
-        private readonly Dictionary<string, Dictionary<string, SubscriberBuilder>> _subscribers =
-            new Dictionary<string, Dictionary<string, SubscriberBuilder>>();
-
-        public ConnectionBuilder(SchemaBuilder builder)
-        {
-            Builder = builder;
-        }
-
-        public SchemaBuilder Builder { get; }
-
-        public ConnectionBuilder Field(
-            ComplexType owner,
-            string fieldName,
-            IType to,
-            string? description = null,
-            Action<ResolverBuilder>? resolve = null,
-            Action<SubscriberBuilder>? subscribe = null,
-            IEnumerable<DirectiveInstance>? directives = null,
-            Action<ArgsBuilder>? args = null)
-        {
-            if (owner == null) throw new ArgumentNullException(nameof(owner));
-            if (fieldName == null) throw new ArgumentNullException(nameof(fieldName));
-            if (to == null) throw new ArgumentNullException(nameof(to));
-
-            if (!Builder.TryGetType<ComplexType>(owner.Name, out _))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add Field. Owner type {owner.Name} is not known for {fieldName}.");
-
-            var target = to.Unwrap();
-            if (!Builder.TryGetType<INamedType>(target.Name, out _))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add Field '{fieldName} to {owner.Name}'. Target type {target.Name} is not known.");
-
-            if (!_fields.ContainsKey(owner.Name))
-                _fields[owner.Name] = new Dictionary<string, IField>();
-
-            if (_fields[owner.Name].ContainsKey(fieldName))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add field '{fieldName}'. Type '{owner.Name}' already has field with same name.");
-
-            var argsBuilder = new ArgsBuilder();
-            args?.Invoke(argsBuilder);
-
-            var field = new Field(
-                to,
-                argsBuilder.Build(),
-                description,
-                null,
-                directives);
-
-            _fields[owner.Name].Add(fieldName, field);
-
-            if (resolve != null)
-            {
-                var resolver = Resolver(owner, fieldName);
-                resolve(resolver);
-            }
-
-            if (subscribe != null)
-            {
-                var subscriber = Subscriber(owner, fieldName);
-                subscribe(subscriber);
-            }
-
-            return this;
-        }
-
-        public ConnectionBuilder InputField(
-            InputObjectType owner,
-            string fieldName,
-            IType to,
-            object? defaultValue = null,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            if (owner == null) throw new ArgumentNullException(nameof(owner));
-            if (fieldName == null) throw new ArgumentNullException(nameof(fieldName));
-            if (to == null) throw new ArgumentNullException(nameof(to));
-
-            if (!Builder.TryGetType<InputObjectType>(owner.Name, out _))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add InputField. Owner type {owner.Name} is not known for {fieldName}.");
-
-            var target = to.Unwrap();
-            if (!Builder.TryGetType<INamedType>(target.Name, out _))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add Field '{fieldName} to {owner.Name}'. Target type {target.Name} is not known.");
-
-            if (!_inputFields.ContainsKey(owner.Name))
-                _inputFields[owner.Name] = new Dictionary<string, InputObjectField>();
-
-            if (_inputFields[owner.Name].ContainsKey(fieldName))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add input field '{fieldName}'. Type '{owner.Name}' already has field with same name.");
-
-            _inputFields[owner.Name].Add(
-                fieldName,
-                new InputObjectField(to, description, defaultValue, directives));
-
-            return this;
-        }
-
-        public ResolverBuilder Resolver(ComplexType owner, string fieldName)
-        {
-            if (!_resolvers.ContainsKey(owner.Name))
-                _resolvers[owner.Name] = new Dictionary<string, ResolverBuilder>();
-
-            if (_resolvers[owner.Name].ContainsKey(fieldName))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add resolver for '{fieldName}'. Resolver has been already created. Use {nameof(GetOrAddResolver)}.");
-
-            var builder = new ResolverBuilder();
-            _resolvers[owner.Name].Add(fieldName, builder);
-            return builder;
-        }
-
-        public SubscriberBuilder Subscriber(ComplexType owner, string fieldName)
-        {
-            if (!_subscribers.ContainsKey(owner.Name))
-                _subscribers[owner.Name] = new Dictionary<string, SubscriberBuilder>();
-
-            if (_subscribers[owner.Name].ContainsKey(fieldName))
-                throw new SchemaBuilderException(owner.Name,
-                    $"Cannot add subscriber for '{fieldName}'. Subscriber has been already created. Use {nameof(GetOrAddSubscriber)}.");
-
-            var builder = new SubscriberBuilder();
-            _subscribers[owner.Name].Add(fieldName, builder);
-            return builder;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/EnumValuesBuilder.cs b/src/graphql/SchemaBuilding/EnumValuesBuilder.cs
deleted file mode 100644
index c6d9117cd..000000000
--- a/src/graphql/SchemaBuilding/EnumValuesBuilder.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public class EnumValuesBuilder
-    {
-        private readonly EnumValues _values = new EnumValues();
-
-        public EnumValuesBuilder Value(
-            string value,
-            string? description,
-            IEnumerable<DirectiveInstance> directives,
-            string? deprecationReason)
-        {
-            _values.Add(value, description, directives, deprecationReason);
-            return this;
-        }
-
-        public EnumValues Build()
-        {
-            return _values;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Build.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Build.cs
deleted file mode 100644
index fa418b602..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Build.cs
+++ /dev/null
@@ -1,105 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.Validation;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public ISchema Build(bool validate = true)
-        {
-            if (validate)
-            {
-                var validationResult = Validate();
-                if (!validationResult.IsValid)
-                {
-                    throw new ValidationException(validationResult);
-                }
-            }
-
-            var (fields, inputFields, resolvers, subscribers) = _connections.Build();
-            return new SchemaGraph(
-                _types,
-                fields,
-                inputFields,
-                _directives,
-                BuildResolvers(resolvers),
-                BuildSubscribers(subscribers),
-                _valueConverters,
-                QueryTypeName,
-                MutationTypeName,
-                SubscriptionTypeName,
-                _schemaDirectives);
-        }
-
-        public (ISchema? Schema, ValidationResult ValidationResult) BuildAndValidate()
-        {
-            var validationResult = Validate();
-
-            if (!validationResult.IsValid)
-                return (null, validationResult);
-
-            var schema = Build();
-            return (schema, new ValidationResult());
-        }
-
-        private ValidationResult Validate()
-        {
-            var errors = new List<ValidationError>();
-
-            // validate serializers exists for scalar types
-            foreach (var scalarType in GetTypes<ScalarType>())
-            {
-                if (!TryGetValueConverter(scalarType.Name, out _))
-                {
-                    errors.Add(new ValidationError(
-                        "SCHEMA_VALUE_CONVERTER_MISSING",
-                        $"Could not find value converter for type '{scalarType.Name}'",
-                        Enumerable.Empty<INode>()));
-                }
-            }
-
-            // validate query root
-            if (!TryGetQuery(out _))
-            {
-                errors.Add(new ValidationError(
-                    "SCHEMA_QUERY_ROOT_MISSING",
-                    $"Could not find Query root",
-                    Enumerable.Empty<INode>()));
-            }
-
-            return new ValidationResult()
-            {
-                Errors = errors
-            };
-        }
-
-        private IReadOnlyDictionary<string, Dictionary<string, Subscriber>> BuildSubscribers(
-            IReadOnlyDictionary<string, Dictionary<string, SubscriberBuilder>> subscribers)
-        {
-            var result = new Dictionary<string, Dictionary<string, Subscriber>>();
-
-            foreach (var type in subscribers)
-                result[type.Key] = type.Value.Select(f => (f.Key, f.Value.Build()))
-                    .ToDictionary(f => f.Key, f => f.Item2);
-
-            return result;
-        }
-
-        private IReadOnlyDictionary<string, Dictionary<string, Resolver>> BuildResolvers(
-            IReadOnlyDictionary<string, Dictionary<string, ResolverBuilder>> resolvers)
-        {
-            var result = new Dictionary<string, Dictionary<string, Resolver>>();
-
-            foreach (var type in resolvers)
-                result[type.Key] = type.Value.Select(f => (f.Key, f.Value.Build()))
-                    .ToDictionary(f => f.Key, f => f.Item2);
-
-            return result;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Get.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Get.cs
deleted file mode 100644
index b07193eeb..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Get.cs
+++ /dev/null
@@ -1,43 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using DirectiveType = Tanka.GraphQL.TypeSystem.DirectiveType;
-using INamedType = Tanka.GraphQL.TypeSystem.INamedType;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public IEnumerable<T> GetTypes<T>() where T : INamedType
-        {
-            return _types.Values.OfType<T>();
-        }
-
-        public bool TryGetDirective(string name, out DirectiveType directiveType)
-        {
-            return _directives.TryGetValue(name, out directiveType);
-        }
-
-        public bool TryGetType<T>(string name, out T namedType)
-            where T : INamedType
-        {
-            return _types.TryGetValue(name, out namedType);
-        }
-
-        public IValueConverter GetValueConverter(string name)
-        {
-            if (_valueConverters.TryGetValue(name, out var converter))
-                return converter;
-
-            throw new SchemaBuilderException(
-                name,
-                $"Could not get value converter for type '{name}'");
-        }
-
-        public bool TryGetValueConverter(string name, out IValueConverter serializer)
-        {
-            return _valueConverters.TryGetValue(name, out serializer);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Import.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Import.cs
deleted file mode 100644
index f5a3687a1..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Import.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public SchemaBuilder Import(params ISchema[] schemas)
-        {
-            MergeTool.Schemas(this, schemas);
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Include.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Include.cs
deleted file mode 100644
index bb3383a82..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Include.cs
+++ /dev/null
@@ -1,27 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public SchemaBuilder Include(DirectiveType directiveType)
-        {
-            if (_directives.ContainsKey(directiveType.Name))
-                throw new SchemaBuilderException(directiveType.Name,
-                    $"Cannot include directive '{directiveType.Name}'. Directive already known.");
-
-            _directives.Add(directiveType.Name, directiveType);
-            return this;
-        }
-
-        public SchemaBuilder Include(INamedType type)
-        {
-            if (_types.ContainsKey(type.Name))
-                throw new SchemaBuilderException(type.Name,
-                    $"Cannot include type '{type.Name}'. Type already known.");
-
-            _types.Add(type.Name, type);
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Remove.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Remove.cs
deleted file mode 100644
index 7fcd593a0..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Remove.cs
+++ /dev/null
@@ -1,44 +0,0 @@
-using System.Linq;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public SchemaBuilder Remove(INamedType type)
-        {
-            if (!TryGetType<INamedType>(type.Name, out _)) 
-                return this;
-
-            switch (type)
-            {
-                case ComplexType complexType:
-                {
-                    foreach (var field in _connections.GetFields(complexType).ToList())
-                        _connections.Remove(complexType, field.Key);
-
-                    break;
-                }
-                case InputObjectType inputObjectType:
-                {
-                    foreach (var field in _connections.GetInputFields(inputObjectType.Name).ToList())
-                        _connections.Remove(inputObjectType, field.Key);
-
-                    break;
-                }
-            }
-
-            _types.Remove(type.Name);
-
-            return this;
-        }
-
-        public SchemaBuilder RemoveConverter(string name)
-        {
-            if (_valueConverters.ContainsKey(name))
-                _valueConverters.Remove(name);
-
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.Roots.cs b/src/graphql/SchemaBuilding/SchemaBuilder.Roots.cs
deleted file mode 100644
index c187d1cbf..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.Roots.cs
+++ /dev/null
@@ -1,107 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        public SchemaBuilder Query(
-            out ObjectType query,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Query(QueryTypeName, out query, description, interfaces);
-            return this;
-        }
-
-        public SchemaBuilder Query(
-            string name,
-            out ObjectType query,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Object(name, out query, description, interfaces);
-            QueryTypeName = name;
-            return this;
-        }
-
-        public SchemaBuilder GetQuery(out ObjectType query)
-        {
-            if (!TryGetType(QueryTypeName, out query))
-                throw new SchemaBuilderException(QueryTypeName, "Query root does not exists");
-
-            return this;
-        }
-
-        public bool TryGetQuery(out ObjectType query)
-        {
-            return TryGetType(QueryTypeName, out query);
-        }
-
-        public SchemaBuilder Mutation(
-            out ObjectType mutation,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Mutation(MutationTypeName, out mutation, description, interfaces);
-            return this;
-        }
-
-        public SchemaBuilder Mutation(
-            string name,
-            out ObjectType mutation,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Object(name, out mutation, description, interfaces);
-            MutationTypeName = name;
-            return this;
-        }
-
-        public SchemaBuilder GetMutation(out ObjectType mutation)
-        {
-            if (!TryGetType(MutationTypeName, out mutation))
-                throw new SchemaBuilderException(MutationTypeName, "Mutation root does not exists");
-
-            return this;
-        }
-
-        public bool TryGetMutation(out ObjectType query)
-        {
-            return TryGetType(MutationTypeName, out query);
-        }
-
-        public SchemaBuilder Subscription(
-            out ObjectType subscription,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Subscription(SubscriptionTypeName, out subscription, description, interfaces);
-            return this;
-        }
-
-        public SchemaBuilder Subscription(
-            string name,
-            out ObjectType subscription,
-            string description = null,
-            IEnumerable<InterfaceType> interfaces = null)
-        {
-            Object(name, out subscription, description, interfaces);
-            SubscriptionTypeName = name;
-            return this;
-        }
-
-        public SchemaBuilder GetSubscription(out ObjectType subscription)
-        {
-            if (!TryGetType(SubscriptionTypeName, out subscription))
-                throw new SchemaBuilderException(SubscriptionTypeName, "Subscription root does not exists");
-
-            return this;
-        }
-
-        public bool TryGetSubscription(out ObjectType query)
-        {
-            return TryGetType(SubscriptionTypeName, out query);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilder.cs b/src/graphql/SchemaBuilding/SchemaBuilder.cs
deleted file mode 100644
index c0373f6b5..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilder.cs
+++ /dev/null
@@ -1,189 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public partial class SchemaBuilder
-    {
-        private readonly ConnectionBuilder _connections;
-        private readonly Dictionary<string, DirectiveType> _directives = new Dictionary<string, DirectiveType>();
-
-        private readonly List<DirectiveInstance> _schemaDirectives = new List<DirectiveInstance>();
-
-        private readonly Dictionary<string, INamedType> _types =
-            new Dictionary<string, INamedType>();
-
-        private string? _schemaDescription;
-        private readonly Dictionary<string, IValueConverter> _valueConverters = new Dictionary<string, IValueConverter>();
-
-        public string QueryTypeName { get; private set; } = "Query";
-
-        public string MutationTypeName { get; private set; } = "Mutation";
-
-        public string SubscriptionTypeName { get; private set; } = "Subscription";
-
-        public SchemaBuilder()
-        {
-            _connections = new ConnectionBuilder(this);
-
-            foreach (var scalar in ScalarType.Standard)
-            {
-                Include(scalar.Type);
-                Include(scalar.Type.Name, scalar.Converter);
-            }
-
-            Include(TypeSystem.DirectiveType.Include);
-            Include(TypeSystem.DirectiveType.Skip);
-            Include(TypeSystem.DirectiveType.Deprecated);
-        }
-
-        public SchemaBuilder Connections(Action<ConnectionBuilder> connections)
-        {
-            if (connections == null)
-                throw new ArgumentNullException(nameof(connections));
-
-            connections(_connections);
-
-            return this;
-        }
-
-        public SchemaBuilder Object(
-            string name,
-            out ObjectType definition,
-            string? description = null,
-            IEnumerable<InterfaceType>? interfaces = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            definition = new ObjectType(
-                name,
-                description,
-                interfaces,
-                directives);
-
-            Include(definition);
-            return this;
-        }
-
-        public SchemaBuilder Interface(
-            string name,
-            out InterfaceType definition,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            definition = new InterfaceType(
-                name,
-                description,
-                directives);
-
-            Include(definition);
-            return this;
-        }
-
-        public SchemaBuilder InputObject(
-            string name,
-            out InputObjectType definition,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            definition = new InputObjectType(name, description, directives);
-            Include(definition);
-            return this;
-        }
-
-        public SchemaBuilder Enum(string name,
-            out EnumType enumType,
-            string? description = null,
-            Action<EnumValuesBuilder>? values = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            var valuesBuilder = new EnumValuesBuilder();
-            values?.Invoke(valuesBuilder);
-            enumType = new EnumType(
-                name,
-                valuesBuilder.Build(),
-                description,
-                directives);
-
-            Include(enumType);
-            return this;
-        }
-
-        public SchemaBuilder DirectiveType(
-            string name,
-            out DirectiveType directiveType,
-            IEnumerable<DirectiveLocation> locations,
-            string? description = null,
-            Action<ArgsBuilder>? args = null)
-        {
-            var argsBuilder = new ArgsBuilder();
-            args?.Invoke(argsBuilder);
-            directiveType = new DirectiveType(
-                name, 
-                locations, 
-                argsBuilder.Build(),
-                description
-                );
-
-            Include(directiveType);
-            return this;
-        }
-
-        public SchemaBuilder Union(
-            string name,
-            out UnionType unionType,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null,
-            params ObjectType[] possibleTypes)
-        {
-            unionType = new UnionType(name, possibleTypes, description, directives);
-            Include(unionType);
-            return this;
-        }
-
-        public SchemaBuilder Scalar(
-            string name,
-            out ScalarType scalarType,
-            IValueConverter converter,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            scalarType = new ScalarType(name, description, directives);
-            Include(scalarType);
-            Include(name, converter);
-            return this;
-        }
-
-        public SchemaBuilder Scalar(
-            string name,
-            out ScalarType scalarType,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            scalarType = new ScalarType(name, description, directives);
-            Include(scalarType);
-
-            return this;
-        }
-
-        public SchemaBuilder Include(
-            string name,
-            IValueConverter converter)
-        {
-            _valueConverters.Add(name, converter);
-            return this;
-        }
-
-        public SchemaBuilder Schema(
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-        {
-            _schemaDescription = description;
-            if (directives != null)
-                _schemaDirectives.AddRange(directives);
-
-            return this;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/SchemaBuilding/SchemaBuilderException.cs b/src/graphql/SchemaBuilding/SchemaBuilderException.cs
deleted file mode 100644
index 45944d03b..000000000
--- a/src/graphql/SchemaBuilding/SchemaBuilderException.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using System;
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    public class SchemaBuilderException : Exception
-    {
-        public SchemaBuilderException(string typeName, string message, Exception inner = null) : base(message, inner)
-        {
-            TypeName = typeName;
-        }
-
-        public string TypeName { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/Tools/MergeSchemaBuilderExtensions.cs b/src/graphql/Tools/MergeSchemaBuilderExtensions.cs
deleted file mode 100644
index d6e0536f1..000000000
--- a/src/graphql/Tools/MergeSchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Tools
-{
-    public static class MergeSchemaBuilderExtensions
-    {
-        public static SchemaBuilder Merge(this SchemaBuilder builder, params ISchema[] schemas)
-        {
-            MergeTool.Schemas(builder, schemas);
-            return builder;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/Tools/MergeTool.cs b/src/graphql/Tools/MergeTool.cs
deleted file mode 100644
index b4f13fe04..000000000
--- a/src/graphql/Tools/MergeTool.cs
+++ /dev/null
@@ -1,185 +0,0 @@
-using System;
-using System.Linq;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Tools
-{
-    [Obsolete("Use SchemaBuilder.Merge")]
-    public static class MergeTool
-    {
-        public static void Schemas(SchemaBuilder target, params ISchema[] schemas)
-        {
-            foreach (var right in schemas) Schema(target, right);
-        }
-
-        public static void Schema(SchemaBuilder target, ISchema right)
-        {
-            foreach (var rightType in right.QueryTypes<ScalarType>())
-                MergeScalarType(right, target, rightType);
-
-            foreach (var rightType in right.QueryTypes<EnumType>())
-                MergeEnumType(right, target, rightType);
-
-            foreach (var rightType in right.QueryTypes<InputObjectType>()) 
-                MergeInputType(right, target, rightType);
-
-            foreach (var directiveType in right.QueryDirectiveTypes())
-            {
-                target.TryGetDirective(directiveType.Name, out var leftDirective);
-
-                if (leftDirective != null)
-                    continue;
-
-                target.Include(directiveType);
-            }
-
-            // merge complex types
-            foreach (var rightType in right.QueryTypes<ComplexType>())
-                MergeComplexType(right, target, rightType);
-
-            // merge unions
-            foreach (var rightType in right.QueryTypes<UnionType>())
-                MergeUnionType(right, target, rightType);
-
-            // merge complex type field
-            foreach (var rightType in right.QueryTypes<ComplexType>())
-                MergeComplexTypeFields(right, target, rightType);
-        }
-
-        private static void MergeUnionType(ISchema right, SchemaBuilder builder, UnionType rightType)
-        {
-            if (!builder.TryGetType<UnionType>(rightType.Name, out _)) 
-                builder.Include(rightType);
-        }
-
-        private static void MergeEnumType(ISchema right, SchemaBuilder builder, EnumType rightType)
-        {
-            // merge values if enum exists in both
-            if (builder.TryGetType<EnumType>(rightType.Name, out var leftEnumType))
-            {
-                var leftValues = leftEnumType.Values.ToList();
-                var rightValues = rightType.Values;
-
-                // combine values
-                foreach (var rightValue in rightValues)
-                {
-                    // if key is same then the values are same
-                    if (leftValues.Any(v => v.Key == rightValue.Key))
-                        continue;
-
-                    //todo: should we merge directives?
-
-                    leftValues.Add(rightValue);
-                }
-
-                builder.Remove(leftEnumType);
-                builder.Enum(
-                    leftEnumType.Name,
-                    out _,
-                    rightType.Description,
-                    values => leftValues.ForEach(v => values.Value(
-                        v.Value.Value, 
-                        v.Value.Description, 
-                        v.Value.Directives,
-                        v.Value.DeprecationReason)),
-                    rightType.Directives);
-            }
-            else
-            {
-                // include whole enum
-                builder.Include(rightType);
-            }
-        }
-
-        private static void MergeScalarType(ISchema right, SchemaBuilder builder, ScalarType rightType)
-        {
-            if (!builder.TryGetType<ScalarType>(rightType.Name, out _)) 
-                builder.Include(rightType);
-
-            if (!builder.TryGetValueConverter(rightType.Name, out _))
-            {
-                var converter = right.GetValueConverter(rightType.Name);
-
-                if (converter != null)
-                    builder.Include(rightType.Name, converter);
-            }
-        }
-
-        private static void MergeInputType(ISchema right, SchemaBuilder builder, InputObjectType rightType)
-        {
-            if (builder.TryGetType<InputObjectType>(rightType.Name, out var leftType))
-            {
-                var rightTypeFields = right.GetInputFields(rightType.Name);
-
-                foreach (var rightTypeField in rightTypeFields)
-                    builder.Connections(connect =>
-                    {
-                        if (connect.TryGetInputField(leftType, rightTypeField.Key, out _))
-                            return;
-
-                        connect.Include(leftType, new[] {rightTypeField});
-                    });
-            }
-            else
-            {
-                builder
-                    .Include(rightType)
-                    .Connections(connect =>
-                    {
-                        var fields = right.GetInputFields(rightType.Name).ToList();
-                        connect.Include(rightType, fields);
-                    });
-            }
-        }
-
-        private static void MergeComplexType(ISchema right, SchemaBuilder builder, ComplexType rightType)
-        {
-            // complex type from right is missing so include it
-            if (!builder.TryGetType<ComplexType>(rightType.Name, out _))
-            {
-                builder.Include(rightType);
-            }
-        }
-
-        private static void MergeComplexTypeFields(ISchema right, SchemaBuilder builder, ComplexType rightType)
-        {
-            if (builder.TryGetType<ComplexType>(rightType.Name, out var leftType))
-            {
-                var rightTypeFields = right.GetFields(rightType.Name);
-
-                foreach (var rightTypeField in rightTypeFields)
-                    builder.Connections(connect =>
-                    {
-                        // if field already exists skip it
-                        if (connect.TryGetField(leftType, rightTypeField.Key, out _))
-                            return;
-
-                        // include field
-                        connect.Include(leftType, rightTypeField);
-
-                        // include resolver
-                        var resolver = right.GetResolver(rightType.Name, rightTypeField.Key);
-
-                        if (resolver != null)
-                            connect.GetOrAddResolver(leftType, rightTypeField.Key)
-                                .Run(resolver);
-
-                        // include subscriber
-                        var subscriber = right.GetSubscriber(rightType.Name, rightTypeField.Key);
-
-                        if (subscriber != null)
-                            connect.GetOrAddSubscriber(leftType, rightTypeField.Key)
-                                .Run(subscriber);
-                    });
-            }
-            else
-            {
-                throw new SchemaBuilderException(
-                    rightType.Name,
-                    $"Cannot merge fields of {rightType}. Type is now known by builder. " +
-                    $"Call MergeComplexType first.");
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/Tools/SchemaTools.cs b/src/graphql/Tools/SchemaTools.cs
deleted file mode 100644
index 964fdbbe1..000000000
--- a/src/graphql/Tools/SchemaTools.cs
+++ /dev/null
@@ -1,82 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Directives;
-using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Tanka.GraphQL.ValueResolution;
-
-namespace Tanka.GraphQL.Tools
-{
-    public static class SchemaTools
-    {
-        public static ISchema MakeExecutableSchema(
-            SchemaBuilder builder,
-            IResolverMap resolvers,
-            ISubscriberMap subscribers = null,
-            IReadOnlyDictionary<string, IValueConverter> converters = null,
-            IReadOnlyDictionary<string, CreateDirectiveVisitor> directives = null)
-        {
-            // add converters
-            if (converters != null)
-                UseConverters(builder, converters);
-
-            // bind resolvers
-            builder.UseResolversAndSubscribers(resolvers, subscribers);
-
-            // execute directives
-            if (directives != null) builder.ApplyDirectives(directives);
-
-            return builder.Build();
-        }
-
-        public static ISchema MakeExecutableSchema(
-            ISchema schema,
-            IResolverMap resolvers,
-            ISubscriberMap subscribers = null)
-        {
-            return MakeExecutableSchema(
-                new SchemaBuilder().Import(schema),
-                resolvers,
-                subscribers);
-        }
-
-        public static ISchema MakeExecutableSchemaWithIntrospection(
-            SchemaBuilder builder,
-            IResolverMap? resolvers = null,
-            ISubscriberMap? subscribers = null,
-            IReadOnlyDictionary<string, IValueConverter>? converters = null,
-            IReadOnlyDictionary<string, CreateDirectiveVisitor>? directives = null)
-        {
-            // add converters
-            if (converters != null)
-                UseConverters(builder, converters);
-
-            if (resolvers != null)
-                builder.UseResolversAndSubscribers(resolvers, subscribers);
-
-            if (directives != null)
-                builder.ApplyDirectives(directives);
-
-            var schema = builder.Build();
-            var introspection = Introspect.Schema(schema);
-
-            return new SchemaBuilder()
-                .Merge(schema, introspection)
-                .Build();
-        }
-
-        private static void UseConverters(SchemaBuilder builder,
-            IReadOnlyDictionary<string, IValueConverter> converters)
-        {
-            foreach (var converter in converters)
-            {
-                // remove existing converter if exists
-                builder.RemoveConverter(converter.Key);
-
-                // include converter
-                builder.Include(converter.Key, converter.Value);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Args.cs b/src/graphql/TypeSystem/Args.cs
deleted file mode 100644
index 897d02107..000000000
--- a/src/graphql/TypeSystem/Args.cs
+++ /dev/null
@@ -1,33 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class Args : Dictionary<string, Argument>
-    {
-        public Args()
-        {
-            
-        }
-
-        public void Add(string key, IType type, object defaultValue = null, string description = null)
-        {
-            Add(key, new Argument(type, defaultValue, description));
-        }
-
-        public Args(IEnumerable<KeyValuePair<string, Argument>> arguments)
-        {
-            foreach (var argument in arguments)
-            {
-                this[argument.Key] = argument.Value;
-            }
-        }
-
-        public Args((string Name, IType Type, object DefaultValue, string Description)[] args)
-        {
-            foreach (var (name, type, defaultValue, description) in args)
-            {
-                Add(name, type, defaultValue, description);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Argument.cs b/src/graphql/TypeSystem/Argument.cs
deleted file mode 100644
index eb0938402..000000000
--- a/src/graphql/TypeSystem/Argument.cs
+++ /dev/null
@@ -1,44 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class Argument : IDescribable, IHasDirectives
-    {
-        private readonly DirectiveList _directives;
-
-        public Argument(IType type, object defaultValue = null, string description = null,
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            Type = type ?? throw new ArgumentNullException(nameof(type));
-            DefaultValue = defaultValue;
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-        }
-
-        public IType Type { get; set; }
-
-        public object DefaultValue { get; set; }
-
-        public string Description { get; }
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        [Obsolete]
-        public static Argument Arg(IType type, object defaultValue = null, string description = null)
-        {
-            if (type == null) throw new ArgumentNullException(nameof(type));
-
-            return new Argument(type, defaultValue, description);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Ast.cs b/src/graphql/TypeSystem/Ast.cs
index e9cdeaf0c..34bd3aef6 100644
--- a/src/graphql/TypeSystem/Ast.cs
+++ b/src/graphql/TypeSystem/Ast.cs
@@ -1,36 +1,63 @@
-
+using System;
+using System.Collections.Generic;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.TypeSystem
 {
     public static class Ast
     {
-        public static IType TypeFromAst(ISchema schema, TypeBase type)
+        public static bool GetIfArgumentValue(
+            Directive directive,
+            IReadOnlyDictionary<string, object?>? coercedVariableValues,
+            Argument argument)
         {
-            if (type == null)
-                return null;
+            if (directive == null) throw new ArgumentNullException(nameof(directive));
+            if (argument == null) throw new ArgumentNullException(nameof(argument));
 
-            if (type.Kind == NodeKind.NonNullType)
+            switch (argument.Value)
             {
-                var innerType = TypeFromAst(schema, ((NonNullType)type).OfType);
-                return new NonNull(innerType);
-            }
+                case { Kind: NodeKind.BooleanValue }:
+                    return ((BooleanValue)argument.Value).Value;
+                case { Kind: NodeKind.Variable }:
+                    var variable = (Variable)argument.Value;
+                    var variableValue = coercedVariableValues?[variable.Name];
 
-            if (type.Kind == NodeKind.ListType)
-            {
-                var innerType = TypeFromAst(schema, ((ListType)type).OfType);
-                return new List(innerType);
+                    if (variableValue == null)
+                        throw new Exception(
+                            $"If argument of {directive} is null. Variable value should not be null");
+
+                    return (bool)variableValue;
+                default:
+                    return false;
             }
+        }
+
+        public static bool DoesFragmentTypeApply(
+            ObjectDefinition objectType,
+            TypeDefinition fragmentType)
+        {
+            if (objectType.Name == fragmentType.Name)
+                return true;
 
-            if (type.Kind == NodeKind.NamedType)
+            return fragmentType switch
             {
-                var namedType = (NamedType) type;
-                return schema.GetNamedType(namedType.Name);
-            }
+                InterfaceDefinition interfaceType => objectType.HasInterface(interfaceType.Name),
+                UnionDefinition unionType => unionType.HasMember(objectType.Name),
+                _ => false
+            };
+        }
 
-            throw new DocumentException(
-                $"Unexpected type kind: {type.Kind}");
+        public static TypeDefinition UnwrapAndResolveType(ISchema schema, TypeBase type)
+        {
+            return type switch
+            {
+                NonNullType NonNullType => UnwrapAndResolveType(schema, NonNullType.OfType),
+                ListType list => UnwrapAndResolveType(schema, list.OfType),
+                NamedType namedType => schema.GetRequiredNamedType<TypeDefinition>(namedType.Name),
+                _ => throw new InvalidOperationException($"Unsupported type '{type}'")
+            };
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ComplexType.cs b/src/graphql/TypeSystem/ComplexType.cs
deleted file mode 100644
index 58ad393cc..000000000
--- a/src/graphql/TypeSystem/ComplexType.cs
+++ /dev/null
@@ -1,32 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public abstract class ComplexType : INamedType, IDescribable, IHasDirectives
-    {
-        private readonly DirectiveList _directives;
-
-        protected ComplexType(string name, string? description, IEnumerable<DirectiveInstance>? directives)
-        {
-            Name = name;
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-        }
-
-        public string? Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance? GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public string Name { get; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/DirectiveInstance.cs b/src/graphql/TypeSystem/DirectiveInstance.cs
deleted file mode 100644
index 34d368a51..000000000
--- a/src/graphql/TypeSystem/DirectiveInstance.cs
+++ /dev/null
@@ -1,48 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class DirectiveInstance
-    {
-        public DirectiveType Type { get; }
-
-        private readonly Dictionary<string, object?> _arguments;
-
-        public DirectiveInstance(DirectiveType directiveType, Dictionary<string, object?>? argumentValues = null)
-        {
-            Type = directiveType ?? throw new ArgumentNullException(nameof(directiveType));
-            _arguments = argumentValues ?? new Dictionary<string, object?>();
-        }
-
-        public string Name => Type.Name;
-
-        public IReadOnlyDictionary<string, object?> Arguments => _arguments;
-
-        public T GetArgument<T>(string name)
-        {
-            object rawValue;
-
-            if (_arguments.ContainsKey(name))
-            {
-                rawValue = _arguments[name];           
-            }
-            else
-            {
-
-                var argument = Type.GetArgument(name);
-                rawValue = argument?.DefaultValue;
-            }
-
-            if (rawValue == null || rawValue.Equals(null))
-                return default;
-
-            return (T)rawValue;
-        }
-
-        public override string ToString()
-        {
-            return $"@{Name}";
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/DirectiveList.cs b/src/graphql/TypeSystem/DirectiveList.cs
index 43f8b93ad..fc921c371 100644
--- a/src/graphql/TypeSystem/DirectiveList.cs
+++ b/src/graphql/TypeSystem/DirectiveList.cs
@@ -1,28 +1,29 @@
 using System.Collections;
 using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
 
 namespace Tanka.GraphQL.TypeSystem
 {
-    public class DirectiveList : IHasDirectives, IEnumerable<DirectiveInstance>
+    public class DirectiveList : IHasDirectives, IEnumerable<Directive>
     {
-        private readonly Dictionary<string, DirectiveInstance>
-            _directives = new Dictionary<string, DirectiveInstance>();
+        private readonly Dictionary<string, Directive>
+            _directives = new Dictionary<string, Directive>();
 
-        public DirectiveList(IEnumerable<DirectiveInstance>? directives = null)
+        public DirectiveList(IEnumerable<Directive>? directives = null)
         {
             if (directives != null)
                 foreach (var directiveInstance in directives)
                     _directives[directiveInstance.Name] = directiveInstance;
         }
 
-        public IEnumerable<DirectiveInstance> Directives => _directives.Values;
+        public IEnumerable<Directive> Directives => _directives.Values;
 
-        public DirectiveInstance? GetDirective(string name)
+        public Directive? GetDirective(string name)
         {
             return _directives.ContainsKey(name) ? _directives[name] : null;
         }
 
-        public IEnumerator<DirectiveInstance> GetEnumerator()
+        public IEnumerator<Directive> GetEnumerator()
         {
             return _directives.Values.GetEnumerator();
         }
diff --git a/src/graphql/TypeSystem/DirectiveType.cs b/src/graphql/TypeSystem/DirectiveType.cs
deleted file mode 100644
index b583d7a3f..000000000
--- a/src/graphql/TypeSystem/DirectiveType.cs
+++ /dev/null
@@ -1,149 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class DirectiveType : IDescribable, IType
-    {
-        /// <summary>
-        ///     Introspection does not yet use this if found
-        /// </summary>
-        public static DirectiveType Deprecated = new DirectiveType(
-            "deprecated",
-            new[]
-            {
-                DirectiveLocation.FIELD_DEFINITION,
-                DirectiveLocation.ENUM_VALUE
-            },
-            new Args()
-            {
-                {"reason", ScalarType.String}
-            });
-
-        public static IEnumerable<DirectiveLocation> ExecutableLocations = new[]
-        {
-            DirectiveLocation.QUERY,
-            DirectiveLocation.MUTATION,
-            DirectiveLocation.SUBSCRIPTION,
-            DirectiveLocation.FIELD,
-            DirectiveLocation.FRAGMENT_DEFINITION,
-            DirectiveLocation.FRAGMENT_SPREAD,
-            DirectiveLocation.INLINE_FRAGMENT
-        };
-
-        public static DirectiveType Include = new DirectiveType(
-            "include",
-            new[]
-            {
-                DirectiveLocation.FIELD,
-                DirectiveLocation.FRAGMENT_SPREAD,
-                DirectiveLocation.INLINE_FRAGMENT
-            },
-            new Args()
-            {
-                {"if", ScalarType.NonNullBoolean}
-            });
-
-        public static DirectiveType Skip = new DirectiveType(
-            "skip",
-            new[]
-            {
-                DirectiveLocation.FIELD,
-                DirectiveLocation.FRAGMENT_SPREAD,
-                DirectiveLocation.INLINE_FRAGMENT
-            },
-            new Args
-            {
-                {"if", ScalarType.NonNullBoolean}
-            });
-
-        public static IEnumerable<DirectiveLocation> TypeSystemLocations = new[]
-        {
-            DirectiveLocation.SCHEMA,
-            DirectiveLocation.SCALAR,
-            DirectiveLocation.OBJECT,
-            DirectiveLocation.FIELD_DEFINITION,
-            DirectiveLocation.ARGUMENT_DEFINITION,
-            DirectiveLocation.INTERFACE,
-            DirectiveLocation.UNION,
-            DirectiveLocation.ENUM,
-            DirectiveLocation.ENUM_VALUE,
-            DirectiveLocation.INPUT_OBJECT,
-            DirectiveLocation.INPUT_FIELD_DEFINITION
-        };
-
-        private readonly Args _arguments = new Args();
-        private readonly List<DirectiveLocation> _locations;
-
-        public DirectiveType(
-            string name,
-            IEnumerable<DirectiveLocation> locations,
-            Args arguments = null,
-            string description = null)
-        {
-            Name = name ?? throw new ArgumentNullException(nameof(name));
-            Description = description ?? string.Empty;
-            _locations = locations?.ToList() ?? throw new ArgumentNullException(nameof(locations));
-
-            if (arguments != null)
-                foreach (var argument in arguments)
-                    _arguments[argument.Key] = argument.Value;
-        }
-
-        public IEnumerable<KeyValuePair<string, Argument>> Arguments => _arguments;
-
-        public IEnumerable<DirectiveLocation> Locations => _locations;
-
-        public bool IsExecutable => _locations.Any(l => ExecutableLocations.Contains(l));
-
-        public bool IsTypeSystem => _locations.Any(l => TypeSystemLocations.Contains(l));
-
-        public string Name { get; }
-
-        public Argument GetArgument(string name)
-        {
-            if (!_arguments.ContainsKey(name))
-                return null;
-
-            return _arguments[name];
-        }
-
-        public bool HasArgument(string name)
-        {
-            return _arguments.ContainsKey(name);
-        }
-
-        public DirectiveInstance CreateInstance(Dictionary<string, object?>? argumentValues = null)
-        {
-            return new DirectiveInstance(this, argumentValues);
-        }
-
-        public string Description { get; }
-    }
-
-    
-
-    public enum DirectiveLocation
-    {
-        QUERY,
-        MUTATION,
-        SUBSCRIPTION,
-        FIELD,
-        FRAGMENT_DEFINITION,
-        FRAGMENT_SPREAD,
-        INLINE_FRAGMENT,
-
-        SCHEMA,
-        SCALAR,
-        OBJECT,
-        FIELD_DEFINITION,
-        ARGUMENT_DEFINITION,
-        INTERFACE,
-        UNION,
-        ENUM,
-        ENUM_VALUE,
-        INPUT_OBJECT,
-        INPUT_FIELD_DEFINITION
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/EnumType.cs b/src/graphql/TypeSystem/EnumType.cs
deleted file mode 100644
index 1c85e7a94..000000000
--- a/src/graphql/TypeSystem/EnumType.cs
+++ /dev/null
@@ -1,106 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class EnumType : INamedType, IValueConverter, IDescribable, IHasDirectives
-    {
-        private readonly EnumValues _values = new EnumValues();
-        private readonly DirectiveList _directives;
-
-        public EnumType(
-            string name,
-            EnumValues values,
-            string description = null,
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            if (values == null) throw new ArgumentNullException(nameof(values));
-
-            Name = name ?? throw new ArgumentNullException(nameof(name));
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-
-            foreach (var enumValue in values)
-            {
-                var value = enumValue.Value ?? new EnumValue(string.Empty);
-                _values[enumValue.Key.ToUpperInvariant()] = value;
-            }
-        }
-
-        public IEnumerable<KeyValuePair<string, EnumValue>> Values => _values;
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public string Name { get; }
-
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            var enumValue = _values.SingleOrDefault(v => v.Key == value?
-                                                             .ToString()
-                                                             .ToUpperInvariant());
-            return enumValue.Key;
-        }
-
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
-
-            return new Language.Nodes.EnumValue((string) serializedValue);
-        }
-
-        public object? ParseValue(object input)
-        {
-            if (input == null)
-                return null;
-
-            var stringInput = Convert.ToString(input, CultureInfo.InvariantCulture)
-                ?.ToUpperInvariant();
-
-            if (stringInput == null || !_values.ContainsKey(stringInput)) return null;
-
-            var value = _values.SingleOrDefault(v => v.Key == stringInput);
-            return value.Key;
-        }
-
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-                return null;
-            
-            var enumValue = (Language.Nodes.EnumValue) input;
-            var value = _values.SingleOrDefault(v => v.Key == enumValue.Name.ToString().ToUpperInvariant());
-            return value.Key;
-        }
-
-        public override string ToString()
-        {
-            return Name;
-        }
-
-        public bool Contains(string value)
-        {
-            return _values.ContainsKey(value);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/EnumValue.cs b/src/graphql/TypeSystem/EnumValue.cs
deleted file mode 100644
index 5b702340c..000000000
--- a/src/graphql/TypeSystem/EnumValue.cs
+++ /dev/null
@@ -1,41 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class EnumValue : IDescribable, IDeprecable, IHasDirectives
-    {
-        private readonly DirectiveList _directives;
-
-        public EnumValue(
-            string value,
-            string? description = null, 
-            IEnumerable<DirectiveInstance>? directives = null,
-            string? deprecationReason = null)
-        {
-            Description = description ?? string.Empty;
-            Value = value;
-            DeprecationReason = deprecationReason;
-            _directives = new DirectiveList(directives);
-        }
-
-        public string Value { get; }
-        
-        public string DeprecationReason { get; }
-
-        public bool IsDeprecated => !string.IsNullOrEmpty(DeprecationReason);
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/EnumValues.cs b/src/graphql/TypeSystem/EnumValues.cs
deleted file mode 100644
index 6af6b85ec..000000000
--- a/src/graphql/TypeSystem/EnumValues.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class EnumValues : Dictionary<string, EnumValue>
-    {
-        public EnumValues(params EnumValue[] values)
-        {
-            foreach (var value in values) Add(value.Value, value);
-        }
-
-        public EnumValues()
-        {
-        }
-
-        public void Add(
-            string value,
-            string? description = null,
-            IEnumerable<DirectiveInstance>? directives = null,
-            string? deprecationReason = null)
-        {
-            Add(value, new EnumValue(value, description, directives, deprecationReason));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ExecutableSchema.cs b/src/graphql/TypeSystem/ExecutableSchema.cs
new file mode 100644
index 000000000..957c129e5
--- /dev/null
+++ b/src/graphql/TypeSystem/ExecutableSchema.cs
@@ -0,0 +1,171 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL.TypeSystem
+{
+    public class ExecutableSchema : ISchema
+    {
+        private readonly DirectiveList _directives;
+        private readonly IReadOnlyDictionary<string, DirectiveDefinition> _directiveTypes;
+        private readonly IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> _fields;
+        private readonly IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> _inputFields;
+        private readonly IResolverMap _resolvers;
+        private readonly IReadOnlyDictionary<string, IValueConverter> _scalarSerializers;
+        private readonly ISubscriberMap _subscribers;
+        private readonly IReadOnlyDictionary<string, TypeDefinition> _types;
+
+        public ExecutableSchema(
+            IReadOnlyDictionary<string, TypeDefinition> types,
+            IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> fields,
+            IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> inputFields,
+            IReadOnlyDictionary<string, DirectiveDefinition> directiveTypes,
+            ObjectDefinition queryRoot,
+            IResolverMap resolvers,
+            IReadOnlyDictionary<string, IValueConverter> scalarSerializers,
+            ObjectDefinition? mutationRoot = null,
+            ObjectDefinition? subscriptionRoot = null,
+            ISubscriberMap? subscribers = null,
+            IEnumerable<Directive>? directives = null)
+        {
+            _types = types;
+            _fields = fields;
+            _inputFields = inputFields;
+            _directiveTypes = directiveTypes;
+            _resolvers = resolvers;
+            _subscribers = subscribers;
+            _scalarSerializers = scalarSerializers;
+            _directives = new DirectiveList(directives);
+
+            Query = queryRoot;
+            Mutation = mutationRoot;
+            Subscription = subscriptionRoot;
+        }
+
+        public ObjectDefinition? Subscription { get; }
+
+        public ObjectDefinition Query { get; }
+
+        public ObjectDefinition? Mutation { get; }
+
+        public TypeDefinition? GetNamedType(string name)
+        {
+            if (_types.TryGetValue(name, out var type)) return type;
+
+            return null;
+        }
+
+        public FieldDefinition? GetField(string type, string name)
+        {
+            if (_fields.TryGetValue(type, out var fields))
+                if (fields.TryGetValue(name, out var field))
+                    return field;
+
+            return null;
+        }
+
+        public IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type)
+        {
+            if (_fields.TryGetValue(type, out var fields)) return fields;
+
+            return Enumerable.Empty<KeyValuePair<string, FieldDefinition>>();
+        }
+
+        public IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition
+        {
+            if (filter == null)
+                return _types.Select(t => t.Value)
+                    .OfType<T>()
+                    .AsQueryable();
+
+            return _types.Select(t => t.Value)
+                .OfType<T>()
+                .Where(t => filter(t))
+                .AsQueryable();
+        }
+
+        public DirectiveDefinition? GetDirectiveType(string name)
+        {
+            if (_directiveTypes.TryGetValue(name, out var directive)) return directive;
+
+            return null;
+        }
+
+        public IQueryable<DirectiveDefinition> QueryDirectiveTypes(
+            Predicate<DirectiveDefinition>? filter = null)
+        {
+            if (filter != null)
+                return _directiveTypes.Select(v => v.Value)
+                    .Where(d => filter(d))
+                    .AsQueryable();
+
+            return _directiveTypes.Select(v => v.Value).AsQueryable();
+        }
+
+        public IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type)
+        {
+            if (_inputFields.TryGetValue(type, out var fields)) return fields;
+
+            return Enumerable.Empty<KeyValuePair<string, InputValueDefinition>>();
+        }
+
+        public InputValueDefinition? GetInputField(string type, string name)
+        {
+            if (_inputFields.TryGetValue(type, out var fields))
+                if (fields.TryGetValue(name, out var field))
+                    return field;
+
+            return null;
+        }
+
+        public IEnumerable<ObjectDefinition> GetPossibleTypes(InterfaceDefinition abstractType)
+        {
+            return QueryTypes<ObjectDefinition>(ob => ob.HasInterface(abstractType.Name));
+        }
+
+        public IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType)
+        {
+            return QueryTypes<ObjectDefinition>(ob => abstractType.HasMember(ob.Name));
+        }
+
+        public Resolver? GetResolver(string type, string fieldName)
+        {
+            return _resolvers.GetResolver(type, fieldName);
+        }
+
+        public Subscriber? GetSubscriber(string type, string fieldName)
+        {
+            return _subscribers.GetSubscriber(type, fieldName);
+        }
+
+        public IValueConverter? GetValueConverter(string type)
+        {
+            if (_scalarSerializers.TryGetValue(type, out var serializer))
+                return serializer;
+
+            return null;
+        }
+
+        public IEnumerable<Directive> Directives => _directives;
+
+        public Directive? GetDirective(string name)
+        {
+            return null;
+        }
+
+        public bool HasDirective(string name)
+        {
+            return _directives.HasDirective(name);
+        }
+
+        public T? GetNamedType<T>(string name) where T : TypeDefinition
+        {
+            return (T?)GetNamedType(name);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Field.cs b/src/graphql/TypeSystem/Field.cs
deleted file mode 100644
index d831bbcd3..000000000
--- a/src/graphql/TypeSystem/Field.cs
+++ /dev/null
@@ -1,86 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.ValueResolution;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class Field : IField, IDescribable, IDeprecable, IHasDirectives
-    {
-        private readonly Args _arguments = new Args();
-        private readonly DirectiveList _directives;
-
-        public Field(
-            IType type,
-            Args? arguments = null,
-            string? description = null,
-            object? defaultValue = null,
-            IEnumerable<DirectiveInstance>? directives = null,
-            string? deprecationReason = null)
-        {
-            Type = type;
-            Description = description ?? string.Empty;
-            DefaultValue = defaultValue;
-            DeprecationReason = deprecationReason;
-            _directives = new DirectiveList(directives);
-
-            if (arguments != null)
-                foreach (var argument in arguments)
-                    _arguments[argument.Key] = argument.Value;
-        }
-
-        public object? DefaultValue { get; set; }
-
-        public Resolver? Resolve { get; set; }
-
-        public Subscriber? Subscribe { get; set; }
-
-        public string? DeprecationReason { get; }
-
-        public bool IsDeprecated => !string.IsNullOrEmpty(DeprecationReason);
-
-        public string? Description { get; }
-
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public IType Type { get; set; }
-
-        public IEnumerable<KeyValuePair<string, Argument>> Arguments
-        {
-            get => _arguments;
-            set
-            {
-                if (value == null)
-                {
-                    _arguments.Clear();
-                    return;
-                }
-
-                foreach (var argument in value)
-                    _arguments[argument.Key] = argument.Value;
-            }
-        }
-
-        public Argument GetArgument(string name)
-        {
-            if (!_arguments.ContainsKey(name))
-                return null;
-
-            return _arguments[name];
-        }
-
-        public bool HasArgument(string name)
-        {
-            return _arguments.ContainsKey(name);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Fields.cs b/src/graphql/TypeSystem/Fields.cs
deleted file mode 100644
index 87f09d3f4..000000000
--- a/src/graphql/TypeSystem/Fields.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public sealed class Fields : Dictionary<string, IField>
-    {
-        public void Add(string key, IType type, Args arguments = null, string description = null, object defaultValue = null)
-        {
-            Add(key, new Field(type, arguments, description, defaultValue));
-        }
-
-        public Fields(IEnumerable<KeyValuePair<string, IField>> fields)
-        {
-            foreach (var kv in fields)
-            {
-                Add(kv.Key, kv.Value);
-            }
-        }
-
-        public Fields()
-        {
-            
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/GraphQLTypeComparer.cs b/src/graphql/TypeSystem/GraphQLTypeComparer.cs
deleted file mode 100644
index f4a77bb06..000000000
--- a/src/graphql/TypeSystem/GraphQLTypeComparer.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class GraphQLTypeComparer : IEqualityComparer<IType>
-    {
-        public bool Equals(IType x, IType y)
-        {
-            if (x == null) throw new ArgumentNullException(nameof(x));
-            if (y == null) throw new ArgumentNullException(nameof(y));
-
-            if (x is List listX && y is List listY)
-            {
-                return Object.Equals(listX.OfType, listY.OfType);
-            }
-
-            if (x is NonNull nonNullX && y is NonNull nonNullY)
-            {
-                return Object.Equals(nonNullX.OfType, nonNullY.OfType);
-            }
-
-            if (x is INamedType namedTypeX && y is INamedType namedTypeY)
-            {
-                return Object.Equals(namedTypeX, namedTypeY);
-            }
-
-            return false;
-        }
-
-        public int GetHashCode(IType obj)
-        {
-            return obj.GetHashCode();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IAbstractType.cs b/src/graphql/TypeSystem/IAbstractType.cs
deleted file mode 100644
index 3f3452d2f..000000000
--- a/src/graphql/TypeSystem/IAbstractType.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface IAbstractType
-    {
-        bool IsPossible(ObjectType type);
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IDeprecable.cs b/src/graphql/TypeSystem/IDeprecable.cs
deleted file mode 100644
index 616808bb3..000000000
--- a/src/graphql/TypeSystem/IDeprecable.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface IDeprecable
-    {
-        string? DeprecationReason { get; }
-
-        bool IsDeprecated { get; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IDescribable.cs b/src/graphql/TypeSystem/IDescribable.cs
deleted file mode 100644
index c30d1ceb9..000000000
--- a/src/graphql/TypeSystem/IDescribable.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface IDescribable
-    {
-        string? Description { get; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IField.cs b/src/graphql/TypeSystem/IField.cs
deleted file mode 100644
index 5b6ab032b..000000000
--- a/src/graphql/TypeSystem/IField.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface IField : IDeprecable, IDescribable, IHasDirectives
-    {
-        IType Type { get; set; }
-
-        IEnumerable<KeyValuePair<string, Argument>>? Arguments { get; set; }
-
-        Argument? GetArgument(string name);
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IHasDirectives.cs b/src/graphql/TypeSystem/IHasDirectives.cs
index e3395a7e2..d22f95844 100644
--- a/src/graphql/TypeSystem/IHasDirectives.cs
+++ b/src/graphql/TypeSystem/IHasDirectives.cs
@@ -1,12 +1,13 @@
 using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
 
 namespace Tanka.GraphQL.TypeSystem
 {
     public interface IHasDirectives
     {
-        IEnumerable<DirectiveInstance> Directives { get; }
+        IEnumerable<Directive> Directives { get; }
 
-        DirectiveInstance? GetDirective(string name);
+        Directive? GetDirective(string name);
 
         bool HasDirective(string name);
     }
diff --git a/src/graphql/TypeSystem/INamedType.cs b/src/graphql/TypeSystem/INamedType.cs
deleted file mode 100644
index d335ab2cf..000000000
--- a/src/graphql/TypeSystem/INamedType.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-using System;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface INamedType: IType
-    {
-        string Name { get; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ISchema.cs b/src/graphql/TypeSystem/ISchema.cs
index 1c08cd73e..55bc75e29 100644
--- a/src/graphql/TypeSystem/ISchema.cs
+++ b/src/graphql/TypeSystem/ISchema.cs
@@ -1,41 +1,44 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL.TypeSystem
 {
-    public interface ISchema : IHasDirectives, IType
+    public interface ISchema : IHasDirectives
     {
-        ObjectType? Subscription { get; }
+        ObjectDefinition? Mutation { get; }
 
-        ObjectType Query { get; }
+        ObjectDefinition Query { get; }
 
-        ObjectType? Mutation { get; }
+        ObjectDefinition? Subscription { get; }
 
-        INamedType GetNamedType(string name);
+        TypeDefinition? GetNamedType(string name);
 
-        IField GetField(string type, string name);
+        FieldDefinition? GetField(string type, string name);
 
-        IEnumerable<KeyValuePair<string, IField>> GetFields(string type);
+        IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type);
 
-        IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : INamedType;
+        IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition;
 
-        DirectiveType GetDirectiveType(string name);
+        DirectiveDefinition? GetDirectiveType(string name);
 
-        IQueryable<DirectiveType> QueryDirectiveTypes(Predicate<DirectiveType> filter = null);
+        IQueryable<DirectiveDefinition> QueryDirectiveTypes(Predicate<DirectiveDefinition>? filter = null);
 
-        IEnumerable<KeyValuePair<string, InputObjectField>> GetInputFields(string type);
+        IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type);
 
-        InputObjectField GetInputField(string type, string name);
+        InputValueDefinition? GetInputField(string type, string name);
 
-        IEnumerable<ObjectType> GetPossibleTypes(IAbstractType abstractType);
+        IEnumerable<ObjectDefinition> GetPossibleTypes(InterfaceDefinition abstractType);
 
-        Resolver GetResolver(string type, string fieldName);
+        IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType);
 
-        Subscriber GetSubscriber(string type, string fieldName);
+        Resolver? GetResolver(string type, string fieldName);
 
-        IValueConverter GetValueConverter(string type);
+        Subscriber? GetSubscriber(string type, string fieldName);
+
+        IValueConverter? GetValueConverter(string type);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IType.cs b/src/graphql/TypeSystem/IType.cs
deleted file mode 100644
index 1be6c87e7..000000000
--- a/src/graphql/TypeSystem/IType.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-namespace Tanka.GraphQL.TypeSystem
-{
-    /// <summary>
-    ///     Base interface for type system types
-    /// </summary>
-    public interface IType
-    {
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IWrappingType.cs b/src/graphql/TypeSystem/IWrappingType.cs
deleted file mode 100644
index 6c1fbc27a..000000000
--- a/src/graphql/TypeSystem/IWrappingType.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace Tanka.GraphQL.TypeSystem
-{
-    public interface IWrappingType: IType
-    {
-        IType OfType { get; }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/InputFields.cs b/src/graphql/TypeSystem/InputFields.cs
deleted file mode 100644
index c0fbc48af..000000000
--- a/src/graphql/TypeSystem/InputFields.cs
+++ /dev/null
@@ -1,32 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public sealed class InputFields : Dictionary<string, InputObjectField>
-    {
-        public void Add(string name, EnumType type, object defaultValue = null, string description = null)
-        {
-            Add(name, new InputObjectField(type, description, defaultValue));
-        }
-
-        public void Add(string name, InputObjectType type, object defaultValue = null, string description = null)
-        {
-            Add(name, new InputObjectField(type, description, defaultValue));
-        }
-
-        public void Add(string name, ScalarType type, object defaultValue = null, string description = null)
-        {
-            Add(name, new InputObjectField(type, description, defaultValue));
-        }
-
-        public void Add(string name, List type, object defaultValue = null, string description = null)
-        {
-            Add(name, new InputObjectField(type, description, defaultValue));
-        }
-
-        public void Add(string name, NonNull type, object defaultValue = null, string description = null)
-        {
-            Add(name, new InputObjectField(type, description, defaultValue));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/InputObjectField.cs b/src/graphql/TypeSystem/InputObjectField.cs
deleted file mode 100644
index 7ab65ef66..000000000
--- a/src/graphql/TypeSystem/InputObjectField.cs
+++ /dev/null
@@ -1,45 +0,0 @@
-using System;
-using System.Collections.Generic;
-using Tanka.GraphQL.Execution;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class InputObjectField : IHasDirectives, IDescribable
-    {
-        private readonly DirectiveList _directives;
-
-        public InputObjectField(
-            IType type,
-            string description = null,
-            object defaultValue = null,
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            if (!TypeIs.IsInputType(type))
-                throw new ArgumentOutOfRangeException(
-                    $" Type '{type}' is not valid input type");
-
-            Type = type;
-            Description = description ?? string.Empty;
-            DefaultValue = defaultValue;
-            _directives = new DirectiveList(directives);
-        }
-
-        public object DefaultValue { get; set; }
-
-        public IType Type { get; }
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/InputObjectType.cs b/src/graphql/TypeSystem/InputObjectType.cs
deleted file mode 100644
index 83610cf7b..000000000
--- a/src/graphql/TypeSystem/InputObjectType.cs
+++ /dev/null
@@ -1,37 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class InputObjectType : INamedType, IDescribable, IHasDirectives
-    {
-        private readonly DirectiveList _directives;
-
-        public InputObjectType(string name, string description = null, IEnumerable<DirectiveInstance> directives = null)
-        {
-            Name = name;
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-        }
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public string Name { get; }
-
-        public override string ToString()
-        {
-            return $"{Name}";
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/InterfaceType.cs b/src/graphql/TypeSystem/InterfaceType.cs
deleted file mode 100644
index dbddcafb9..000000000
--- a/src/graphql/TypeSystem/InterfaceType.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class InterfaceType : ComplexType, IHasDirectives, IDescribable, IAbstractType
-    {
-        public InterfaceType(string name, string description = null, IEnumerable<DirectiveInstance> directives = null)
-            : base(name, description, directives)
-        {
-        }
-
-        public override string ToString()
-        {
-            return $"{Name}";
-        }
-
-        public bool IsPossible(ObjectType type)
-        {
-            return type.Implements(this);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/List.cs b/src/graphql/TypeSystem/List.cs
deleted file mode 100644
index 1bebb59a9..000000000
--- a/src/graphql/TypeSystem/List.cs
+++ /dev/null
@@ -1,49 +0,0 @@
-using System;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class List : IWrappingType, IEquatable<List>
-    {
-        public IType OfType { get; }
-
-        public List(IType wrappedType)
-        {
-            OfType = wrappedType ?? throw new ArgumentNullException(nameof(wrappedType));
-        }
-
-        public override string ToString()
-        {
-            return $"[{OfType}]";
-        }
-
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != this.GetType()) return false;
-            return Equals((List) obj);
-        }
-
-        public bool Equals(List other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Equals(OfType, other.OfType);
-        }
-
-        public override int GetHashCode()
-        {
-            return (OfType != null ? OfType.GetHashCode() : 0);
-        }
-
-        public static bool operator ==(List left, List right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(List left, List right)
-        {
-            return !Equals(left, right);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/NonNull.cs b/src/graphql/TypeSystem/NonNull.cs
deleted file mode 100644
index f36f40231..000000000
--- a/src/graphql/TypeSystem/NonNull.cs
+++ /dev/null
@@ -1,49 +0,0 @@
-using System;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class NonNull : IWrappingType, IEquatable<NonNull>
-    {
-        public NonNull(IType wrappedType)
-        {
-            OfType = wrappedType;
-        }
-
-        public IType OfType { get; }
-
-        public override string ToString()
-        {
-            return $"{OfType}!";
-        }
-
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != this.GetType()) return false;
-            return Equals((NonNull) obj);
-        }
-
-        public bool Equals(NonNull other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Equals(OfType, other.OfType);
-        }
-
-        public override int GetHashCode()
-        {
-            return (OfType != null ? OfType.GetHashCode() : 0);
-        }
-
-        public static bool operator ==(NonNull left, NonNull right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(NonNull left, NonNull right)
-        {
-            return !Equals(left, right);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ObjectType.cs b/src/graphql/TypeSystem/ObjectType.cs
deleted file mode 100644
index edc6d7012..000000000
--- a/src/graphql/TypeSystem/ObjectType.cs
+++ /dev/null
@@ -1,65 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class ObjectType : ComplexType, IDescribable, IEquatable<ObjectType>
-    {
-        private readonly Dictionary<string, InterfaceType> _interfaces = new Dictionary<string, InterfaceType>();
-
-        public ObjectType(
-            string name,
-            string? description = null,
-            IEnumerable<InterfaceType>? implements = null,
-            IEnumerable<DirectiveInstance>? directives = null)
-            : base(name, description, directives)
-        {
-            if (implements != null)
-                foreach (var interfaceType in implements)
-                    _interfaces[interfaceType.Name] = interfaceType;
-        }
-
-        public IEnumerable<InterfaceType> Interfaces => _interfaces.Values;
-
-        public bool Equals(ObjectType? other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return string.Equals(Name, other.Name);
-        }
-
-
-        public bool Implements(InterfaceType interfaceType)
-        {
-            return _interfaces.ContainsKey(interfaceType.Name);
-        }
-
-        public override string ToString()
-        {
-            return $"{Name}";
-        }
-
-        public override bool Equals(object? obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
-            return Equals((ObjectType) obj);
-        }
-
-        public override int GetHashCode()
-        {
-            return Name.GetHashCode();
-        }
-
-        public static bool operator ==(ObjectType left, ObjectType right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(ObjectType left, ObjectType right)
-        {
-            return !Equals(left, right);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ScalarType.cs b/src/graphql/TypeSystem/ScalarType.cs
deleted file mode 100644
index 0c6b6c1f9..000000000
--- a/src/graphql/TypeSystem/ScalarType.cs
+++ /dev/null
@@ -1,138 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class ScalarType : INamedType, IEquatable<ScalarType>, IEquatable<INamedType>, IDescribable,
-        IHasDirectives
-    {
-        public static ScalarType Boolean = new ScalarType(
-            "Boolean",
-            "The `Boolean` scalar type represents `true` or `false`");
-
-        public static ScalarType Float = new ScalarType(
-            "Float",
-            "The `Float` scalar type represents signed double-precision fractional values" +
-            " as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)");
-
-        public static ScalarType ID = new ScalarType(
-            "ID",
-            "The ID scalar type represents a unique identifier, often used to refetch an object" +
-            " or as the key for a cache. The ID type is serialized in the same way as a String; " +
-            "however, it is not intended to be human‐readable. While it is often numeric, it " +
-            "should always serialize as a String.");
-
-        public static ScalarType Int = new ScalarType(
-            "Int",
-            "The `Int` scalar type represents non-fractional signed whole numeric values");
-
-        public static ScalarType String = new ScalarType(
-            "String",
-            "The `String` scalar type represents textual data, represented as UTF-8" +
-            " character sequences. The String type is most often used by GraphQL to" +
-            " represent free-form human-readable text.");
-
-        public static NonNull NonNullBoolean = new NonNull(Boolean);
-        public static NonNull NonNullFloat = new NonNull(Float);
-        public static NonNull NonNullID = new NonNull(ID);
-        public static NonNull NonNullInt = new NonNull(Int);
-        public static NonNull NonNullString = new NonNull(String);
-
-        public static IEnumerable<(ScalarType Type, IValueConverter Converter)> Standard =
-            new List<(ScalarType Type, IValueConverter Converter)>()
-            {
-                (String, new StringConverter()),
-                (Int, new IntConverter()),
-                (Float, new DoubleConverter()),
-                (Boolean, new BooleanConverter()),
-                (ID, new IdConverter())
-            };
-        
-
-
-        private readonly DirectiveList _directives;
-
-
-        public ScalarType(
-            string name,
-            string description = null,
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            Name = name;
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-        }
-
-        protected IValueConverter Converter { get; }
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public bool Equals(INamedType other)
-        {
-            return Equals((object) other);
-        }
-
-        public bool Equals(ScalarType other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return string.Equals(Name, other.Name);
-        }
-
-        public string Name { get; }
-
-        public override string ToString()
-        {
-            return $"{Name}";
-        }
-
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
-
-            return Equals((ScalarType) obj);
-        }
-
-        public override int GetHashCode()
-        {
-            return Name != null ? Name.GetHashCode() : 0;
-        }
-
-        public static bool operator ==(ScalarType left, ScalarType right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(ScalarType left, ScalarType right)
-        {
-            return !Equals(left, right);
-        }
-
-        internal static IValueConverter GetStandardConverter(string scalarName)
-        {
-            var scalar = Standard.SingleOrDefault(s => s.Type.Name == scalarName);
-
-            if (scalar.Type == null)
-                return null;
-
-            return scalar.Converter;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Scalars.cs b/src/graphql/TypeSystem/Scalars.cs
new file mode 100644
index 000000000..ec162125b
--- /dev/null
+++ b/src/graphql/TypeSystem/Scalars.cs
@@ -0,0 +1,52 @@
+using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
+
+namespace Tanka.GraphQL.TypeSystem
+{
+    public static class Scalars
+    {
+         public static ScalarDefinition Boolean = new ScalarDefinition(
+            name: "Boolean",
+            description: "The `Boolean` scalar type represents `true` or `false`");
+
+        public static ScalarDefinition Float = new ScalarDefinition(
+            name: "Float",
+            description:"The `Float` scalar type represents signed double-precision fractional values" +
+            " as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)");
+
+        public static ScalarDefinition ID = new ScalarDefinition(
+           name: "ID",
+            description:"The ID scalar type represents a unique identifier, often used to refetch an object" +
+            " or as the key for a cache. The ID type is serialized in the same way as a String; " +
+            "however, it is not intended to be human‐readable. While it is often numeric, it " +
+            "should always serialize as a String.");
+
+        public static ScalarDefinition Int = new ScalarDefinition(
+            name:"Int",
+            description:"The `Int` scalar type represents non-fractional signed whole numeric values");
+
+        public static ScalarDefinition String = new ScalarDefinition(
+            name:"String",
+            description:"The `String` scalar type represents textual data, represented as UTF-8" +
+            " character sequences. The String type is most often used by GraphQL to" +
+            " represent free-form human-readable text.");
+
+        public static NonNullType NonNullBoolean = new NonNullType(new NamedType("Boolean"));
+        public static NonNullType NonNullFloat = new NonNullType(new NamedType("Float"));
+        public static NonNullType NonNullID = new NonNullType(new NamedType("ID"));
+        public static NonNullType NonNullInt = new NonNullType(new NamedType("Int"));
+        public static NonNullType NonNullString = new NonNullType(new NamedType("String"));
+
+        public static IEnumerable<(ScalarDefinition Type, IValueConverter Converter)> Standard =
+            new List<(ScalarDefinition Type, IValueConverter Converter)>()
+            {
+                (String, new StringConverter()),
+                (Int, new IntConverter()),
+                (Float, new DoubleConverter()),
+                (Boolean, new BooleanConverter()),
+                (ID, new IdConverter())
+            };
+    }
+}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuildOptions.cs b/src/graphql/TypeSystem/SchemaBuildOptions.cs
new file mode 100644
index 000000000..85be3f64c
--- /dev/null
+++ b/src/graphql/TypeSystem/SchemaBuildOptions.cs
@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using Tanka.GraphQL.Directives;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.ImportProviders;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
+
+namespace Tanka.GraphQL.TypeSystem;
+
+public class SchemaBuildOptions
+{
+    public bool BuildTypesFromOrphanedExtensions { get; set; } = false;
+
+    public IReadOnlyDictionary<string, CreateDirectiveVisitor>? DirectiveVisitorFactories { get; set; }
+
+    public string? OverrideMutationRootName { get; set; }
+
+    public string? OverrideQueryRootName { get; set; }
+
+    public string? OverrideSubscriptionRootName { get; set; }
+
+    public IResolverMap? Resolvers { get; set; }
+
+    public ISubscriberMap? Subscribers { get; set; }
+
+    public IReadOnlyDictionary<string, IValueConverter>? ValueConverters { get; set; } =
+        new Dictionary<string, IValueConverter>
+        {
+            [Scalars.String.Name] = new StringConverter(),
+            [Scalars.Int.Name] = new IntConverter(),
+            [Scalars.Float.Name] = new DoubleConverter(),
+            [Scalars.Boolean.Name] = new BooleanConverter(),
+            [Scalars.ID.Name] = new IdConverter()
+        };
+
+    public IReadOnlyList<IImportProvider> ImportProviders { get; set; } = new List<IImportProvider>()
+    {
+        new EmbeddedResourceImportProvider(),
+        new FileSystemImportProvider(AppContext.BaseDirectory)
+    };
+}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuilder.cs b/src/graphql/TypeSystem/SchemaBuilder.cs
new file mode 100644
index 000000000..d11aae5df
--- /dev/null
+++ b/src/graphql/TypeSystem/SchemaBuilder.cs
@@ -0,0 +1,502 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Tanka.GraphQL.Directives;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.ImportProviders;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
+
+namespace Tanka.GraphQL;
+
+public class SchemaBuilder
+{
+    private static readonly Dictionary<string, FieldDefinition> NoFields = new(0);
+    private static readonly Dictionary<string, InputValueDefinition> NoInputObjectFields = new(0);
+    private static readonly List<Directive> NoDirectives = new(0);
+    private readonly ConcurrentDictionary<string, DirectiveDefinition> _directiveDefinitions = new();
+
+    private readonly ConcurrentBag<SchemaDefinition> _schemaDefinitions = new();
+    private readonly ConcurrentBag<SchemaExtension> _schemaExtensions = new();
+
+    private readonly ConcurrentDictionary<string, TypeDefinition> _typeDefinitions = new();
+    private readonly ConcurrentDictionary<string, ConcurrentBag<TypeExtension>> _typeExtensions = new();
+
+    private readonly ConcurrentBag<Import> _imports = new();
+
+    public SchemaBuilder()
+    {
+        Add((TypeSystemDocument)@"
+""""""
+The `Boolean` scalar type represents `true` or `false`
+""""""
+scalar Boolean
+
+""""""
+The `Float` scalar type represents signed double-precision fractional values
+as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)
+""""""
+scalar Float
+
+""""""
+The ID scalar type represents a unique identifier, often used to refetch an object
+or as the key for a cache. The ID type is serialized in the same way as a String;
+however, it is not intended to be human‐readable. While it is often numeric, it
+should always serialize as a String.
+""""""
+scalar ID
+
+""""""
+The `Int` scalar type represents non-fractional signed whole numeric values
+""""""
+scalar Int
+
+""""""
+The `String` scalar type represents textual data, represented as UTF-8
+character sequences. The String type is most often used by GraphQL to
+represent free-form human-readable text.
+""""""
+scalar String
+
+
+directive @deprecated(reason: String) on
+    | FIELD_DEFINITION
+    | ENUM_VALUE
+
+directive @include(if: Boolean!) on
+    | FIELD
+    | FRAGMENT_SPREAD
+    | INLINE_FRAGMENT
+
+directive @skip(if: Boolean!) on
+    | FIELD
+    | FRAGMENT_SPREAD
+    | INLINE_FRAGMENT
+
+directive @specifiedBy(url: String!) on SCALAR
+            ");
+    }
+
+    public SchemaBuilder Add(TypeSystemDocument typeSystem)
+    {
+        if (typeSystem.Imports is not null)
+            foreach (var import in typeSystem.Imports)
+            {
+                Add(import);
+            }
+
+        if (typeSystem.SchemaDefinitions is not null)
+            foreach (var schemaDefinition in typeSystem.SchemaDefinitions)
+                Add(schemaDefinition);
+
+        if (typeSystem.SchemaExtensions is not null)
+            foreach (var schemaExtension in typeSystem.SchemaExtensions)
+                Add(schemaExtension);
+
+        if (typeSystem.TypeDefinitions is not null)
+            foreach (var typeDefinition in typeSystem.TypeDefinitions)
+                Add(typeDefinition);
+
+        if (typeSystem.TypeExtensions is not null)
+            foreach (var typeExtension in typeSystem.TypeExtensions)
+                Add(typeExtension);
+
+        if (typeSystem.DirectiveDefinitions is not null)
+            foreach (var directiveDefinition in typeSystem.DirectiveDefinitions)
+                Add(directiveDefinition);
+
+        return this;
+    }
+
+    private SchemaBuilder Add(Import importDefinition)
+    {
+        _imports.Add(importDefinition);
+        return this;
+    }
+
+    public SchemaBuilder Add(string typeSystemSdl) => Add((TypeSystemDocument)typeSystemSdl);
+
+    public SchemaBuilder Add(SchemaDefinition schemaDefinition)
+    {
+        _schemaDefinitions.Add(schemaDefinition);
+        return this;
+    }
+
+    public SchemaBuilder Add(SchemaExtension schemaExtension)
+    {
+        _schemaExtensions.Add(schemaExtension);
+        return this;
+    }
+
+    public void Add(TypeDefinition typeDefinition)
+    {
+        if (!_typeDefinitions.TryAdd(typeDefinition.Name, typeDefinition))
+            throw TypeAlreadyExists(typeDefinition.Name);
+    }
+
+    public void Add(TypeDefinition[] typeDefinitions)
+    {
+        foreach (var typeDefinition in typeDefinitions)
+            Add(typeDefinition);
+    }
+
+    public void Add(DirectiveDefinition directiveDefinition)
+    {
+        if (!_directiveDefinitions.TryAdd(directiveDefinition.Name, directiveDefinition))
+            throw TypeAlreadyExists(directiveDefinition.Name);
+    }
+
+    public void Add(DirectiveDefinition[] directiveDefinitions)
+    {
+        foreach (var directiveDefinition in directiveDefinitions)
+            Add(directiveDefinition);
+    }
+
+    public SchemaBuilder Add(TypeExtension typeExtension)
+    {
+        var typeExtensions = _typeExtensions
+            .GetOrAdd(typeExtension.Name, _ => new ConcurrentBag<TypeExtension>());
+
+        typeExtensions.Add(typeExtension);
+
+        return this;
+    }
+
+    public SchemaBuilder Add(TypeExtension[] typeExtensions)
+    {
+        foreach (var typeExtension in typeExtensions) Add(typeExtension);
+
+        return this;
+    }
+
+    public Task<ISchema> Build(IResolverMap resolvers, ISubscriberMap? subscribers = null) => Build(
+        new SchemaBuildOptions()
+        {
+            Resolvers = resolvers,
+            Subscribers = subscribers
+        });
+    
+    public async Task<ISchema> Build(SchemaBuildOptions options)
+    {
+        await AddImports(options.ImportProviders);
+        
+        var typeDefinitions = BuildTypeDefinitions(
+            options.BuildTypesFromOrphanedExtensions
+        );
+
+        typeDefinitions = RunDirectiveVisitors(typeDefinitions, options).ToList();
+
+        var namedTypeDefinitions = typeDefinitions.ToDictionary(type => type.Name.Value, type => type);
+
+        var schemas = BuildSchemas().ToList();
+        var operationDefinitions = schemas
+            .SelectMany(schema => schema.Operations)
+            .ToList();
+
+        var queryRoot = FindQueryRoot(
+            namedTypeDefinitions,
+            operationDefinitions,
+            options.OverrideQueryRootName
+        );
+
+        var mutationRoot = FindMutationRoot(
+            namedTypeDefinitions,
+            operationDefinitions,
+            options.OverrideMutationRootName
+        );
+
+        var subscriptionRoot = FindSubscriptionRoot(
+            namedTypeDefinitions,
+            operationDefinitions,
+            options.OverrideSubscriptionRootName
+        );
+
+        var fields = namedTypeDefinitions
+            .Where(kv => kv.Value is ObjectDefinition)
+            .ToDictionary(
+                kv => kv.Key,
+                kv => ((ObjectDefinition)kv.Value).Fields?.ToDictionary(field => field.Name.Value, field => field) ??
+                      NoFields
+            );
+
+        var inputFields = namedTypeDefinitions
+            .Where(kv => kv.Value is InputObjectDefinition)
+            .ToDictionary(
+                kv => kv.Key,
+                kv =>
+                    ((InputObjectDefinition)kv.Value).Fields?.ToDictionary(field => field.Name.Value, field => field) ??
+                    NoInputObjectFields
+            );
+
+        var schemaDirectives = schemas
+            ?.SelectMany(schema => schema.Directives?.ToList() ?? NoDirectives)
+            .ToList();
+
+
+        ISchema schema = new ExecutableSchema(
+            namedTypeDefinitions,
+            fields,
+            inputFields,
+            _directiveDefinitions.ToDictionary(kv => kv.Key, kv => kv.Value),
+            queryRoot,
+            options.Resolvers ?? new ResolversMap(),
+            options.ValueConverters ?? new Dictionary<string, IValueConverter>(0),
+            mutationRoot,
+            subscriptionRoot,
+            options.Subscribers,
+            schemaDirectives
+        );
+
+        return schema;
+    }
+
+    private async Task AddImports(IReadOnlyList<IImportProvider> providers)
+    {
+        if (providers.Count == 0)
+            return;
+
+        var parentOptions = new ParserOptions()
+        {
+            ImportProviders = providers.ToList()
+        };
+
+        var imports = new Queue<Import>(_imports);
+        while (imports.TryDequeue(out var import))
+        {
+            var path = import.From.ToString();
+            var types = import.Types?.Select(t => t.Value).ToArray();
+            var provider = providers.FirstOrDefault(p => p.CanImport(path, types));
+
+            if (provider is null)
+                throw new InvalidOperationException($"No import provider capable of handling import '{import}' given. " +
+                                                    $"Use {nameof(SchemaBuildOptions)}.{nameof(SchemaBuildOptions.ImportProviders)} to set the providers.");
+
+            var typeSystemDocument = await provider.ImportAsync(path, types, parentOptions);
+
+            if (typeSystemDocument.Imports != null)
+                foreach (var subImport in typeSystemDocument.Imports)
+                {
+                    imports.Enqueue(subImport);
+                }
+
+            Add(typeSystemDocument);
+        }
+    }
+
+    private IEnumerable<TypeDefinition> RunDirectiveVisitors(IEnumerable<TypeDefinition> typeDefinitions, SchemaBuildOptions options)
+    {
+        if (options.DirectiveVisitorFactories is null)
+            return typeDefinitions;
+
+        var visitors = options.DirectiveVisitorFactories
+            .Select(factory => new KeyValuePair<string,DirectiveVisitor>(
+                factory.Key,
+                factory.Value(this) //todo: use options instead of this
+            ));
+
+
+        return RunDirectiveVisitors(typeDefinitions, options, visitors);
+    }
+
+    private IEnumerable<TypeDefinition> RunDirectiveVisitors(
+        IEnumerable<TypeDefinition> typeDefinitions,
+        SchemaBuildOptions options, 
+        IEnumerable<KeyValuePair<string, DirectiveVisitor>> visitors)
+    {
+        var typeDefinitionList = typeDefinitions.ToList();
+
+        foreach (var (directiveName, visitor) in visitors)
+        {
+            foreach (var typeDefinition in typeDefinitionList)
+            {
+                if (typeDefinition is not ObjectDefinition objectDefinition)
+                {
+                    yield return typeDefinition;
+                    continue;
+                }
+
+                if (visitor.FieldDefinition != null && objectDefinition.Fields is {Count: > 0})
+                {
+                    bool fieldsChanged = false;
+                    var fields = new List<FieldDefinition>(objectDefinition.Fields.Count);
+                    foreach (var fieldDefinition in objectDefinition.Fields)
+                    {
+                        if (!fieldDefinition.TryGetDirective(directiveName, out var directive))
+                            continue;
+
+                        var resolver = options.Resolvers?.GetResolver(typeDefinition.Name, fieldDefinition.Name);
+                        var subscriber = options.Subscribers?.GetSubscriber(typeDefinition.Name, fieldDefinition.Name);
+                        var context = new DirectiveFieldVisitorContext(
+                            fieldDefinition,
+                            resolver,
+                            subscriber
+                            );
+
+                        DirectiveFieldVisitorContext? maybeSameContext = visitor.FieldDefinition(directive, context);
+
+                        // field not modified
+                        if (maybeSameContext == context)
+                        {
+                            fields.Add(fieldDefinition);
+                            continue;
+                        }
+
+                        fieldsChanged = true;
+
+                        // field removed
+                        if (maybeSameContext is null)
+                            continue;
+                        
+                        fields.Add(maybeSameContext.Field);
+                    }
+
+                    if (fieldsChanged)
+                        yield return objectDefinition.WithFields(fields);
+                    else 
+                        yield return objectDefinition;
+                }
+            }
+        }
+    }
+
+    private Exception TypeAlreadyExists(Name name)
+    {
+        return new InvalidOperationException(
+            $"Type '{name}' already added.");
+    }
+
+    private IEnumerable<SchemaDefinition> BuildSchemas()
+    {
+        var extensions = _schemaExtensions.ToList();
+        var extensionDirectives = extensions
+            .Where(e => e.Directives is not null)
+            .SelectMany(e => e.Directives)
+            .ToList();
+
+        var extensionOperations = extensions
+            .Where(e => e.Operations is not null)
+            .SelectMany(e => e.Operations)
+            .ToList();
+
+        foreach (var schemaDefinition in _schemaDefinitions)
+        {
+            var operations = schemaDefinition.Operations.ToList();
+            operations.AddRange(extensionOperations);
+
+            yield return schemaDefinition
+                .WithDirectives(schemaDefinition.Directives
+                    .Concat(extensionDirectives))
+                .WithOperations(operations);
+        }
+    }
+
+    private ObjectDefinition FindQueryRoot(
+        IReadOnlyDictionary<string, TypeDefinition> typeDefinitions,
+        IEnumerable<RootOperationTypeDefinition> operationDefinitions,
+        string? overrideQueryRootName = null)
+    {
+        if (!string.IsNullOrEmpty(overrideQueryRootName))
+            return (ObjectDefinition)typeDefinitions[overrideQueryRootName];
+
+        var queryNamedType = operationDefinitions
+            .SingleOrDefault(op => op.OperationType == OperationType.Query)
+            ?.NamedType;
+
+        // by convention
+        if (queryNamedType == null && _typeDefinitions.TryGetValue("Query", out var queryDefinition))
+            return (ObjectDefinition)queryDefinition;
+
+        if (queryNamedType is null)
+            throw new InvalidOperationException("Could not find query operation");
+
+        return (ObjectDefinition)typeDefinitions[queryNamedType.Name];
+    }
+
+    private ObjectDefinition? FindMutationRoot(
+        IReadOnlyDictionary<string, TypeDefinition> typeDefinitions,
+        IEnumerable<RootOperationTypeDefinition> operationDefinitions,
+        string? overrideMutationRootName = null)
+    {
+        if (!string.IsNullOrEmpty(overrideMutationRootName))
+            return (ObjectDefinition)typeDefinitions[overrideMutationRootName];
+
+        var mutationNamedType = operationDefinitions
+            .SingleOrDefault(op => op.OperationType == OperationType.Mutation)
+            ?.NamedType;
+
+        // by convention
+        if (mutationNamedType == null && _typeDefinitions.TryGetValue("Mutation", out var mutationDefinition))
+            return (ObjectDefinition)mutationDefinition;
+
+        if (mutationNamedType is null)
+            return null;
+
+        return (ObjectDefinition)typeDefinitions[mutationNamedType.Name];
+    }
+
+    private ObjectDefinition? FindSubscriptionRoot(
+        IReadOnlyDictionary<string, TypeDefinition> typeDefinitions,
+        IEnumerable<RootOperationTypeDefinition> operationDefinitions,
+        string? overrideSubscriptionRootName = null)
+    {
+        if (!string.IsNullOrEmpty(overrideSubscriptionRootName))
+            return (ObjectDefinition)typeDefinitions[overrideSubscriptionRootName];
+
+        var subscriptionNamedType = operationDefinitions
+            .SingleOrDefault(op => op.OperationType == OperationType.Subscription)
+            ?.NamedType;
+
+        // by convention
+        if (subscriptionNamedType == null &&
+            _typeDefinitions.TryGetValue("Subscription", out var subscriptionDefinition))
+            return (ObjectDefinition)subscriptionDefinition;
+
+        if (subscriptionNamedType is null)
+            return null;
+
+        return (ObjectDefinition)typeDefinitions[subscriptionNamedType.Name];
+    }
+
+    private IEnumerable<TypeDefinition> BuildTypeDefinitions(
+        bool buildTypeFromOrphanedExtension)
+    {
+        var typesToBuild = _typeDefinitions.Values.ToList();
+        var typeExtensionsToBuild = _typeExtensions
+            .ToDictionary(
+                types => types.Key,
+                types => types.Value.ToList());
+
+
+        foreach (var type in typesToBuild)
+            if (typeExtensionsToBuild.TryGetValue(type.Name, out var extensions))
+            {
+                yield return type.Extend(extensions.ToArray());
+                typeExtensionsToBuild.Remove(type.Name);
+            }
+            else
+            {
+                yield return type;
+            }
+
+        // build types from orphaned extensions
+        if (buildTypeFromOrphanedExtension && typeExtensionsToBuild.Count > 0)
+            foreach (var typeExtension in typeExtensionsToBuild.ToList())
+            {
+                var (_, extensions) = typeExtension;
+
+                if (extensions.Count == 0)
+                    continue;
+
+                // pick first extension as the type
+                var type = extensions[0].Definition;
+                extensions.RemoveAt(0);
+
+                yield return type.Extend(extensions.ToArray());
+            }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaExtensions.cs b/src/graphql/TypeSystem/SchemaExtensions.cs
index 87af39296..fd0d60705 100644
--- a/src/graphql/TypeSystem/SchemaExtensions.cs
+++ b/src/graphql/TypeSystem/SchemaExtensions.cs
@@ -1,10 +1,28 @@
-namespace Tanka.GraphQL.TypeSystem
+using System;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
+
+namespace Tanka.GraphQL.TypeSystem
 {
     public static class SchemaExtensions
     {
-        public static T GetNamedType<T>(this ISchema schema, string name) where T: INamedType
+        public static T GetRequiredNamedType<T>(this ISchema schema, string name) where T: TypeDefinition
         {
-            return (T) schema.GetNamedType(name);
+            return schema.GetNamedType(name) as T ??
+                   throw new ArgumentOutOfRangeException(nameof(name), $"Schema does not contain a named type '{name}'.");
+        }
+
+        public static FieldDefinition GetRequiredField(this ISchema schema, string type, string fieldName)
+        {
+            return schema.GetField(type, fieldName) ?? 
+                   throw new ArgumentOutOfRangeException(nameof(fieldName), $"Schema does not contain a field '{type}.{fieldName}'.");
+        }
+
+        public static IValueConverter GetRequiredValueConverter(this ISchema schema, string type)
+        {
+            return schema.GetValueConverter(type) ??
+                   throw new ArgumentOutOfRangeException(nameof(type), $"Schema does not contain a value converter for '{type}'.");
+
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaGraph.cs b/src/graphql/TypeSystem/SchemaGraph.cs
deleted file mode 100644
index 4477d829b..000000000
--- a/src/graphql/TypeSystem/SchemaGraph.cs
+++ /dev/null
@@ -1,182 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Tanka.GraphQL.ValueResolution;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class SchemaGraph : ISchema
-    {
-        private readonly IReadOnlyDictionary<string, DirectiveType> _directiveTypes;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, Resolver>> _resolvers;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, Subscriber>> _subscribers;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, IField>> _fields;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, InputObjectField>> _inputFields;
-        private readonly IReadOnlyDictionary<string, INamedType> _types;
-        private readonly IReadOnlyDictionary<string, IValueConverter> _scalarSerializers;
-        private readonly DirectiveList _directives;
-
-        public SchemaGraph(
-            IReadOnlyDictionary<string, INamedType> types,
-            IReadOnlyDictionary<string, Dictionary<string, IField>> fields,
-            IReadOnlyDictionary<string, Dictionary<string, InputObjectField>> inputFields,
-            IReadOnlyDictionary<string, DirectiveType> directiveTypes,
-            IReadOnlyDictionary<string, Dictionary<string, Resolver>> resolvers,
-            IReadOnlyDictionary<string, Dictionary<string, Subscriber>> subscribers,
-            IReadOnlyDictionary<string, IValueConverter> scalarSerializers,
-            string queryTypeName = "Query",
-            string mutationTypeName = "Mutation",
-            string subscriptionTypeName = "Subscription",
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            _types = types;
-            _fields = fields;
-            _inputFields = inputFields;
-            _directiveTypes = directiveTypes;
-            _resolvers = resolvers;
-            _subscribers = subscribers;
-            _scalarSerializers = scalarSerializers;
-            _directives = new DirectiveList(directives);
-
-            Query = GetNamedType<ObjectType>(queryTypeName);
-            Mutation = GetNamedType<ObjectType>(mutationTypeName);
-            Subscription = GetNamedType<ObjectType>(subscriptionTypeName);
-        }
-
-        public ObjectType Subscription { get; }
-
-        public ObjectType Query { get; }
-
-        public ObjectType Mutation { get; }
-
-        public INamedType GetNamedType(string name)
-        {
-            if (_types.TryGetValue(name, out var type))
-            {
-                return type;
-            }
-
-            return null;
-        }
-
-        public IField GetField(string type, string name)
-        {
-            if (_fields.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(name, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public IEnumerable<KeyValuePair<string, IField>> GetFields(string type)
-        {
-            if (_fields.TryGetValue(type, out var fields))
-            {
-                return fields;
-            }
-
-            return Enumerable.Empty<KeyValuePair<string, IField>>();
-        }
-
-        public IQueryable<T> QueryTypes<T>(Predicate<T> filter = null) where T : INamedType
-        {
-            if (filter == null)
-                return _types.Select(t => t.Value)
-                    .OfType<T>()
-                    .AsQueryable();
-
-            return _types.Select(t => t.Value)
-                .OfType<T>()
-                .Where(t => filter(t))
-                .AsQueryable();
-        }
-
-        public DirectiveType GetDirectiveType(string name)
-        {
-            if (_directiveTypes.TryGetValue(name, out var directive))
-            {
-                return directive;
-            }
-
-            return null;
-        }
-
-        public IQueryable<DirectiveType> QueryDirectiveTypes(Predicate<DirectiveType>? filter = null)
-        {
-            if (filter != null)
-                return _directiveTypes.Select(v => v.Value)
-                    .Where(d => filter(d))
-                    .AsQueryable();
-            
-            return _directiveTypes.Select(v => v.Value).AsQueryable();
-        }
-
-        public IEnumerable<KeyValuePair<string, InputObjectField>> GetInputFields(string type)
-        {
-            if (_inputFields.TryGetValue(type, out var fields))
-            {
-                return fields;
-            }
-
-            return Enumerable.Empty<KeyValuePair<string, InputObjectField>>();
-        }
-
-        public InputObjectField GetInputField(string type, string name)
-        {
-            if (_inputFields.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(name, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public IEnumerable<ObjectType> GetPossibleTypes(IAbstractType abstractType)
-        {
-            return QueryTypes<ObjectType>(abstractType.IsPossible);
-        }
-
-        public Resolver GetResolver(string type, string fieldName)
-        {
-            if (_resolvers.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(fieldName, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public Subscriber GetSubscriber(string type, string fieldName)
-        {
-            if (_subscribers.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(fieldName, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public IValueConverter GetValueConverter(string type)
-        {
-            if (_scalarSerializers.TryGetValue(type, out var serializer))
-                return serializer;
-
-            return null;
-        }
-
-        public T GetNamedType<T>(string name) where T : INamedType
-        {
-            return (T) GetNamedType(name);
-        }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/TypeDictionaryExtensions.cs b/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
index d3ae8eb0b..2c43e1331 100644
--- a/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
+++ b/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
@@ -1,15 +1,18 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.TypeSystem
 {
     public static class TypeDictionaryExtensions
     {
-        public static bool TryGetValue<T>(this IDictionary<string, INamedType> types, string key, out T type)
-            where T : INamedType
+        public static bool TryGetValue<T>(this IDictionary<string, TypeDefinition> types, string key,
+            [NotNullWhen(true)] out T? type)
+            where T : TypeDefinition
         {
             if (types.TryGetValue(key, out var value))
             {
-                type = (T) value;
+                type = (T)value;
                 return true;
             }
 
diff --git a/src/graphql/TypeSystem/TypeExtensions.cs b/src/graphql/TypeSystem/TypeExtensions.cs
index e523dc2db..a02391431 100644
--- a/src/graphql/TypeSystem/TypeExtensions.cs
+++ b/src/graphql/TypeSystem/TypeExtensions.cs
@@ -1,18 +1,17 @@
-namespace Tanka.GraphQL.TypeSystem
+using Tanka.GraphQL.Language.Nodes;
+
+namespace Tanka.GraphQL.TypeSystem
 {
     public static class TypeExtensions 
     {
-        public static INamedType? Unwrap(this IType type)
+        public static NamedType Unwrap(this TypeBase type)
         {
-            switch (type)
+            return type switch
             {
-                case NonNull nonNull:
-                    return Unwrap(nonNull.OfType);
-                case List list:
-                    return Unwrap(list.OfType);
-            }
-
-            return type as INamedType;
+                NonNullType NonNullType => Unwrap(NonNullType.OfType),
+                ListType list => Unwrap(list.OfType),
+                _ => (NamedType)type
+            };
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/UnionType.cs b/src/graphql/TypeSystem/UnionType.cs
deleted file mode 100644
index b41d94977..000000000
--- a/src/graphql/TypeSystem/UnionType.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.TypeSystem
-{
-    public class UnionType : INamedType, IDescribable, IAbstractType, IHasDirectives
-    {
-        private readonly DirectiveList _directives;
-
-        public UnionType(string name, IEnumerable<ObjectType> possibleTypes, string description = null,
-            IEnumerable<DirectiveInstance> directives = null)
-        {
-            Name = name;
-            Description = description ?? string.Empty;
-            _directives = new DirectiveList(directives);
-
-            foreach (var possibleType in possibleTypes)
-            {
-                if (PossibleTypes.ContainsKey(possibleType.Name))
-                    throw new InvalidOperationException(
-                        $"Type {Name} already has possibleType with name {possibleType.Name}");
-
-                PossibleTypes[possibleType.Name] = possibleType;
-            }
-        }
-
-        public Dictionary<string, ObjectType> PossibleTypes { get; } = new Dictionary<string, ObjectType>();
-
-        public bool IsPossible(ObjectType type)
-        {
-            return PossibleTypes.ContainsKey(type.Name);
-        }
-
-        public string Description { get; }
-
-        public IEnumerable<DirectiveInstance> Directives => _directives;
-
-        public DirectiveInstance GetDirective(string name)
-        {
-            return _directives.GetDirective(name);
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public string Name { get; }
-
-        public override string ToString()
-        {
-            return Name;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs b/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
new file mode 100644
index 000000000..411938245
--- /dev/null
+++ b/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
@@ -0,0 +1,60 @@
+using System;
+using System.Globalization;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+{
+    public class EnumConverter : IValueConverter
+    {
+        private readonly EnumDefinition _enumDefinition;
+
+        public EnumConverter(EnumDefinition enumDefinition)
+        {
+            _enumDefinition = enumDefinition;
+        }
+
+        public object? Serialize(object? value)
+        {
+            if (value == null)
+                return null;
+
+            var enumValue = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(value));
+            return enumValue?.Value.Name.Value;
+        }
+
+        public ValueBase SerializeLiteral(object? value)
+        {
+            var serializedValue = Serialize(value);
+            if (serializedValue == null)
+                return new NullValue();
+
+            return new EnumValue((string)serializedValue);
+        }
+
+        public object? ParseValue(object? input)
+        {
+            if (input == null)
+                return null;
+
+            var stringInput = Convert.ToString(input, CultureInfo.InvariantCulture)
+                ?.ToUpperInvariant();
+
+            if (stringInput == null) return null;
+
+            var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(stringInput));
+            return value?.Value.Name;
+        }
+
+        public object? ParseLiteral(ValueBase input)
+        {
+            if (input.Kind == NodeKind.NullValue)
+                return null;
+
+            var enumValue = (EnumValue)input;
+            var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(enumValue));
+            return value?.Value;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/graphql/Validation/ExecutionRules.cs b/src/graphql/Validation/ExecutionRules.cs
index 43c0fac87..7b44ae729 100644
--- a/src/graphql/Validation/ExecutionRules.cs
+++ b/src/graphql/Validation/ExecutionRules.cs
@@ -1,11 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Net;
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
-using Argument = Tanka.GraphQL.TypeSystem.Argument;
 
 namespace Tanka.GraphQL.Validation
 {
@@ -16,7 +15,7 @@ public static class ExecutionRules
             /* R511ExecutableDefinitions(),*/
             
             R5211OperationNameUniqueness(),
-            R5221LoneAnonymousOperation(),
+            /*R5221LoneAnonymousOperation(),
             R5231SingleRootField(),
             
             R531FieldSelections(),
@@ -47,7 +46,7 @@ public static class ExecutionRules
             R581And582Variables(),
             R583AllVariableUsesDefined(),
             R584AllVariablesUsed(),
-            R585AllVariableUsagesAreAllowed(),
+            R585AllVariableUsagesAreAllowed(),*/
             
         };
 
@@ -122,7 +121,7 @@ public static CombineRule R5211OperationNameUniqueness()
         ///     If operations is a set of more than 1:
         ///     anonymous must be empty.
         /// </summary>
-        public static CombineRule R5221LoneAnonymousOperation()
+        /*public static CombineRule R5221LoneAnonymousOperation()
         {
             return (context, rule) =>
             {
@@ -270,10 +269,10 @@ public static CombineRule R533LeafFieldSelections()
 
                     if (field != null)
                     {
-                        var selectionType = field.Value.Field.Type.Unwrap();
-                        var hasSubSelection = selection.SelectionSet?.Selections?.Any();
+                        var selectionType = Ast.UnwrapAndResolveType(context.Schema, field.Type);
+                        var hasSubSelection = selection.SelectionSet?.Any();
 
-                        if (selectionType is ScalarType && hasSubSelection == true)
+                        if (selectionType is ScalarDefinition && hasSubSelection == true)
                             context.Error(
                                 ValidationErrorCodes.R533LeafFieldSelections,
                                 "Field selections on scalars or enums are never " +
@@ -281,7 +280,7 @@ public static CombineRule R533LeafFieldSelections()
                                 $"Field: '{fieldName}'",
                                 selection);
 
-                        if (selectionType is EnumType && hasSubSelection == true)
+                        if (selectionType is EnumDefinition && hasSubSelection == true)
                             context.Error(
                                 ValidationErrorCodes.R533LeafFieldSelections,
                                 "Field selections on scalars or enums are never " +
@@ -289,7 +288,7 @@ public static CombineRule R533LeafFieldSelections()
                                 $"Field: '{fieldName}'",
                                 selection);
 
-                        if (selectionType is ObjectType && hasSubSelection == null)
+                        if (selectionType is ObjectDefinition && hasSubSelection == null)
                             context.Error(
                                 ValidationErrorCodes.R533LeafFieldSelections,
                                 "Leaf selections on objects, interfaces, and unions " +
@@ -297,7 +296,7 @@ public static CombineRule R533LeafFieldSelections()
                                 $"Field: '{fieldName}'",
                                 selection);
 
-                        if (selectionType is InterfaceType && hasSubSelection == null)
+                        if (selectionType is InterfaceDefinition && hasSubSelection == null)
                             context.Error(
                                 ValidationErrorCodes.R533LeafFieldSelections,
                                 "Leaf selections on objects, interfaces, and unions " +
@@ -305,7 +304,7 @@ public static CombineRule R533LeafFieldSelections()
                                 $"Field: '{fieldName}'",
                                 selection);
 
-                        if (selectionType is UnionType && hasSubSelection == null)
+                        if (selectionType is UnionDefinition && hasSubSelection == null)
                             context.Error(
                                 ValidationErrorCodes.R533LeafFieldSelections,
                                 "Leaf selections on objects, interfaces, and unions " +
@@ -359,11 +358,10 @@ public static CombineRule R5421RequiredArguments()
         {
             IEnumerable<KeyValuePair<string, Argument>> GetFieldArgumentDefinitions(IRuleVisitorContext context)
             {
-                IEnumerable<KeyValuePair<string, Argument>>? definitions = context
+                var definitions = context
                     .Tracker
                     .GetFieldDef()
-                    ?.Field
-                    .Arguments;
+                    ?.Arguments;
 
                 if (definitions == null)
                     return Enumerable.Empty<KeyValuePair<string, Argument>>();
@@ -394,7 +392,7 @@ void ValidateArguments(
                     var type = argumentDefinition.Value.Type;
                     var defaultValue = argumentDefinition.Value.DefaultValue;
 
-                    if (!(type is NonNull nonNull) || defaultValue != null)
+                    if (!(type is NonNullType NonNullType) || defaultValue != null)
                         continue;
 
                     var argumentName = argumentDefinition.Key;
@@ -560,7 +558,7 @@ public static CombineRule R5513FragmentsOnCompositeTypes()
                 {
                     var type = context.Tracker.GetCurrentType();
 
-                    if (type is UnionType)
+                    if (type is UnionDefinition)
                         return;
 
                     if (type is ComplexType)
@@ -576,7 +574,7 @@ public static CombineRule R5513FragmentsOnCompositeTypes()
                 {
                     var type = context.Tracker.GetCurrentType();
 
-                    if (type is UnionType)
+                    if (type is UnionDefinition)
                         return;
 
                     if (type is ComplexType)
@@ -813,17 +811,17 @@ public static CombineRule R5523FragmentSpreadIsPossible()
                 };
             };
 
-            ObjectType[] GetPossibleTypes(IType type, ISchema schema)
+            ObjectDefinition[] GetPossibleTypes(IType type, ISchema schema)
             {
                 switch (type)
                 {
-                    case ObjectType objectType:
-                        return new[] {objectType};
-                    case InterfaceType interfaceType:
+                    case ObjectDefinition ObjectDefinition:
+                        return new[] {ObjectDefinition};
+                    case InterfaceDefinition interfaceType:
                         return schema.GetPossibleTypes(interfaceType).ToArray();
-                    case UnionType unionType:
-                        return schema.GetPossibleTypes(unionType).ToArray();
-                    default: return new ObjectType[] { };
+                    case UnionDefinition UnionDefinition:
+                        return schema.GetPossibleTypes(UnionDefinition).ToArray();
+                    default: return new ObjectDefinition[] { };
                 }
             }
         }
@@ -840,14 +838,14 @@ public static CombineRule R561ValuesOfCorrectType()
                     var type = context.Tracker.GetNullableType(
                         context.Tracker.GetParentInputType());
 
-                    if (!(type is List)) IsValidScalar(context, node);
+                    if (!(type is ListType)) IsValidScalar(context, node);
                 };
                 rule.EnterObjectValue += node =>
                 {
                     var type = context.Tracker.GetNamedType(
                         context.Tracker.GetInputType());
 
-                    if (!(type is InputObjectType inputType))
+                    if (!(type is InputObjectDefinition inputType))
                     {
                         IsValidScalar(context, node);
                         // return false;
@@ -861,13 +859,13 @@ public static CombineRule R561ValuesOfCorrectType()
                         inputType.Name))
                     {
                         var fieldNode = fieldNodeMap.ContainsKey(fieldDef.Key);
-                        if (!fieldNode && fieldDef.Value.Type is NonNull nonNull)
+                        if (!fieldNode && fieldDef.Value.Type is NonNullType NonNullType)
                             context.Error(
                                 ValidationErrorCodes.R561ValuesOfCorrectType,
                                 RequiredFieldMessage(
                                     type.ToString(),
                                     fieldDef.Key,
-                                    nonNull.ToString()),
+                                    NonNullType.ToString()),
                                 (INode) node);
                     }
                 };
@@ -877,7 +875,7 @@ public static CombineRule R561ValuesOfCorrectType()
                         .GetNamedType(context.Tracker.GetParentInputType());
 
                     var fieldType = context.Tracker.GetInputType();
-                    if (fieldType == null && parentType is InputObjectType)
+                    if (fieldType == null && parentType is InputObjectDefinition)
                         context.Error(
                             ValidationErrorCodes.R561ValuesOfCorrectType,
                             UnknownFieldMessage(
@@ -891,7 +889,7 @@ public static CombineRule R561ValuesOfCorrectType()
                     var maybeEnumType = context.Tracker.GetNamedType(
                         context.Tracker.GetInputType());
 
-                    if (!(maybeEnumType is EnumType type))
+                    if (!(maybeEnumType is EnumDefinition type))
                         IsValidScalar(context, node);
                     
                     else if (type.ParseValue(node) == null)
@@ -990,7 +988,7 @@ public static CombineRule R562InputObjectFieldNames()
                     var inputFieldName = inputField.Name;
 
                     if (!(context.Tracker
-                        .GetParentInputType() is InputObjectType parentType))
+                        .GetParentInputType() is InputObjectDefinition parentType))
                         return;
 
                     var inputFieldDefinition = context.Schema
@@ -1038,7 +1036,7 @@ public static CombineRule R564InputObjectRequiredFields()
             {
                 rule.EnterObjectValue += node =>
                 {
-                    var inputObject = context.Tracker.GetInputType() as InputObjectType;
+                    var inputObject = context.Tracker.GetInputType() as InputObjectDefinition;
 
                     if (inputObject == null)
                         return;
@@ -1051,7 +1049,7 @@ public static CombineRule R564InputObjectRequiredFields()
                         var type = fieldDefinition.Value.Type;
                         var defaultValue = fieldDefinition.Value.DefaultValue;
 
-                        if (type is NonNull nonNull && defaultValue == null)
+                        if (type is NonNullType NonNullType && defaultValue == null)
                         {
                             var fieldName = fieldDefinition.Key;
                             if (!fields.TryGetValue(fieldName, out var field))
@@ -1063,7 +1061,7 @@ public static CombineRule R564InputObjectRequiredFields()
                                     "fields. An input field is required if it has a non‐null type and " +
                                     "does not have a default value. Otherwise, the input object field " +
                                     "is optional. " +
-                                    $"Field '{nonNull}.{fieldName}' is required.",
+                                    $"Field '{NonNullType}.{fieldName}' is required.",
                                     (INode) node);
 
                                 return;
@@ -1077,7 +1075,7 @@ public static CombineRule R564InputObjectRequiredFields()
                                     "fields. An input field is required if it has a non‐null type and " +
                                     "does not have a default value. Otherwise, the input object field " +
                                     "is optional. " +
-                                    $"Field '{nonNull}.{field}' value cannot be null.",
+                                    $"Field '{NonNullType}.{field}' value cannot be null.",
                                     node, field);
                         }
                     }
@@ -1414,16 +1412,16 @@ bool AllowedVariableUsage(
                 object locationDefaultValue
                 )
             {
-                if (locationType is NonNull nonNullLocationType && !(varType is NonNull)) 
+                if (locationType is NonNullType NonNullTypeTypeLocationType && !(varType is NonNullType)) 
                 {
-                    bool hasNonNullVariableDefaultValue = varDefaultValue != null;
+                    bool hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
                     bool hasLocationDefaultValue = locationDefaultValue != null;
 
-                    if (!hasNonNullVariableDefaultValue && !hasLocationDefaultValue) {
+                    if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue) {
                         return false;
                     }
 
-                    var nullableLocationType = nonNullLocationType.OfType;
+                    var nullableLocationType = NonNullTypeTypeLocationType.OfType;
                     return IsTypeSubTypeOf(schema, varType, nullableLocationType);
                 }
 
@@ -1443,24 +1441,24 @@ IType superType
                 }
 
                 // If superType is non-null, maybeSubType must also be non-null.
-                if (superType is NonNull nonNullSuperType) {
-                    if (maybeSubType is NonNull nonNullMaybeSubType) {
+                if (superType is NonNullType NonNullTypeTypeSuperType) {
+                    if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType) {
                         return IsTypeSubTypeOf(
                             schema, 
-                            nonNullMaybeSubType.OfType, 
-                            nonNullSuperType.OfType);
+                            NonNullTypeTypeMaybeSubType.OfType, 
+                            NonNullTypeTypeSuperType.OfType);
                     }
                     return false;
                 }
 
-                if (maybeSubType is NonNull nonNullMaybeSubType2) {
+                if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType2) {
                     // If superType is nullable, maybeSubType may be non-null or nullable.
-                    return IsTypeSubTypeOf(schema, nonNullMaybeSubType2.OfType, superType);
+                    return IsTypeSubTypeOf(schema, NonNullTypeTypeMaybeSubType2.OfType, superType);
                 }
 
                 // If superType type is a list, maybeSubType type must also be a list.
-                if (superType is List listSuperType) {
-                    if (maybeSubType is List listMaybeSubType) {
+                if (superType is ListType listSuperType) {
+                    if (maybeSubType is ListType listMaybeSubType) {
                         return IsTypeSubTypeOf(
                             schema, 
                             listMaybeSubType.OfType, 
@@ -1477,7 +1475,7 @@ IType superType
                 // If superType type is an abstract type, maybeSubType type may be a currently
                 // possible object type.
                 if (superType is IAbstractType abstractSuperType &&
-                    maybeSubType is ObjectType objectMaybeSubType &&
+                    maybeSubType is ObjectDefinition objectMaybeSubType &&
                     abstractSuperType.IsPossible(objectMaybeSubType)) 
                 {
                     return true;
@@ -1487,5 +1485,7 @@ maybeSubType is ObjectType objectMaybeSubType &&
                 return false;
             }
         }
+
+        */
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/FieldSelectionMergingValidator.cs b/src/graphql/Validation/FieldSelectionMergingValidator.cs
index 1a4728fd7..fe8a4ffda 100644
--- a/src/graphql/Validation/FieldSelectionMergingValidator.cs
+++ b/src/graphql/Validation/FieldSelectionMergingValidator.cs
@@ -1,7 +1,10 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Validation
@@ -22,7 +25,7 @@ public void Validate(SelectionSet selectionSet)
             var conflicts = FindConflictsWithinSelectionSet(
                 cachedFieldsAndFragmentNames,
                 comparedFragmentPairs,
-                _context.Tracker.GetParentType(),
+                _context.Tracker.ParentType ?? throw new InvalidOperationException("todo: ParentType is null"),
                 selectionSet);
 
             foreach (var conflict in conflicts)
@@ -236,24 +239,22 @@ private void CollectConflictsWithin(
 
 
         private void CollectFieldsAndFragmentNames(
-            IType parentType,
+            NamedType? parentType,
             SelectionSet selectionSet,
             Dictionary<string, List<FieldDefPair>> nodeAndDefs,
             Dictionary<string, bool> fragments)
         {
-            var selections = selectionSet.Selections.ToArray();
-            for (var i = 0; i < selections.Length; i++)
+            var selections = selectionSet.ToList();
+            for (var i = 0; i < selections.Count; i++)
             {
                 var selection = selections[i];
 
                 if (selection is FieldSelection field)
                 {
                     var fieldName = field.Name;
-                    IField fieldDef = null;
-                    if (isObjectType(parentType) || isInterfaceType(parentType))
-                        fieldDef = _context.Schema.GetField(
-                            ((INamedType) parentType).Name,
-                            fieldName);
+                    FieldDefinition? fieldDef = null;
+                    if (parentType is not null && (IsObjectDefinition(parentType) || IsInterfaceType(parentType)))
+                        fieldDef = _context.Schema.GetField( parentType.Name, fieldName);
 
                     var responseName = field.AliasOrName;
 
@@ -274,9 +275,7 @@ private void CollectFieldsAndFragmentNames(
                 {
                     var typeCondition = inlineFragment.TypeCondition;
                     var inlineFragmentType =
-                        typeCondition != null
-                            ? Ast.TypeFromAst(_context.Schema, typeCondition)
-                            : parentType;
+                        typeCondition ?? parentType;
 
                     CollectFieldsAndFragmentNames(
                         inlineFragmentType,
@@ -287,22 +286,25 @@ private void CollectFieldsAndFragmentNames(
             }
         }
 
-        private bool DoTypesConflict(IType type1, IType type2)
+        private bool DoTypesConflict(TypeBase type1, TypeBase type2)
         {
-            if (type1 is List type1List)
-                return !(type2 is List type2List) || DoTypesConflict(type1List.OfType, type2List.OfType);
+            if (type1 is ListType type1List)
+                return type2 is not ListType type2List || DoTypesConflict(type1List.OfType, type2List.OfType);
 
-            if (type2 is List) return true;
+            if (type2 is ListType) return true;
 
-            if (type1 is NonNull type1NonNull)
-                return !(type2 is NonNull type2NonNull) ||
-                       DoTypesConflict(type1NonNull.OfType, type2NonNull.OfType);
+            if (type1 is NonNullType type1NonNullType)
+                return !(type2 is NonNullType type2NonNullType) ||
+                       DoTypesConflict(type1NonNullType.OfType, type2NonNullType.OfType);
 
-            if (type2 is NonNull) return true;
+            if (type2 is NonNullType) return true;
 
-            if (type1 is ScalarType || type2 is ScalarType) return !Equals(type1, type2);
+            var typeDefinition1 = Ast.UnwrapAndResolveType(_context.Schema, type1);
+            var typeDefinition2 = Ast.UnwrapAndResolveType(_context.Schema, type2);
 
-            if (type1 is EnumType || type2 is EnumType) return !Equals(type1, type2);
+            if (typeDefinition1 is ScalarDefinition || typeDefinition2 is ScalarDefinition) return !Equals(typeDefinition1, typeDefinition2);
+
+            if (typeDefinition1 is EnumDefinition || typeDefinition2 is EnumDefinition) return !Equals(typeDefinition1, typeDefinition2);
 
             return false;
         }
@@ -313,7 +315,7 @@ private static string FieldsConflictMessage(string responseName, ConflictReason
                    "Use different aliases on the fields to fetch both if this was intentional.";
         }
 
-        private Conflict FindConflict(
+        private Conflict? FindConflict(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
             PairSet comparedFragmentPairs,
             bool parentFieldsAreMutuallyExclusive,
@@ -340,7 +342,7 @@ private Conflict FindConflict(
 
             var areMutuallyExclusive =
                 parentFieldsAreMutuallyExclusive ||
-                parentType1 != parentType2 && isObjectType(parentType1) && isObjectType(parentType2);
+                parentType1 != parentType2 && IsObjectDefinition(parentType1) && IsObjectDefinition(parentType2);
 
             // return type for each field.
             var type1 = def1?.Type;
@@ -402,19 +404,19 @@ private Conflict FindConflict(
             // Collect and compare sub-fields. Use the same "visited fragment names" list
             // for both collections so fields in a fragment reference are never
             // compared to themselves.
-            var SelectionSet1 = node1.SelectionSet;
-            var SelectionSet2 = node2.SelectionSet;
+            var selectionSet1 = node1.SelectionSet;
+            var selectionSet2 = node2.SelectionSet;
 
-            if (SelectionSet1 != null && SelectionSet2 != null)
+            if (selectionSet1 != null && selectionSet2 != null)
             {
                 var conflicts = FindConflictsBetweenSubSelectionSets(
                     cachedFieldsAndFragmentNames,
                     comparedFragmentPairs,
                     areMutuallyExclusive,
-                    type1.Unwrap(),
-                    SelectionSet1,
-                    type2.Unwrap(),
-                    SelectionSet2);
+                    type1?.Unwrap(),
+                    selectionSet1,
+                    type2?.Unwrap(),
+                    selectionSet2);
 
                 return SubfieldConflicts(conflicts, responseName, node1, node2);
             }
@@ -426,9 +428,9 @@ private List<Conflict> FindConflictsBetweenSubSelectionSets(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
             PairSet comparedFragmentPairs,
             bool areMutuallyExclusive,
-            IType parentType1,
+            NamedType? parentType1,
             SelectionSet selectionSet1,
-            IType parentType2,
+            NamedType? parentType2,
             SelectionSet selectionSet2)
         {
             var conflicts = new List<Conflict>();
@@ -511,7 +513,7 @@ private List<Conflict> FindConflictsBetweenSubSelectionSets(
         private List<Conflict> FindConflictsWithinSelectionSet(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
             PairSet comparedFragmentPairs,
-            INamedType parentType,
+            NamedType? parentType,
             SelectionSet selectionSet)
         {
             var conflicts = new List<Conflict>();
@@ -566,7 +568,7 @@ private List<Conflict> FindConflictsWithinSelectionSet(
 
         private CachedField GetFieldsAndFragmentNames(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            IType parentType,
+            NamedType? parentType,
             SelectionSet selectionSet)
         {
             cachedFieldsAndFragmentNames.TryGetValue(selectionSet,
@@ -600,21 +602,21 @@ private CachedField GetReferencedFieldsAndFragmentNames(
             if (cachedFieldsAndFragmentNames.ContainsKey(fragment.SelectionSet))
                 return cachedFieldsAndFragmentNames[fragment.SelectionSet];
 
-            var fragmentType = Ast.TypeFromAst(_context.Schema, fragment.TypeCondition);
+            var fragmentType = fragment.TypeCondition;
             return GetFieldsAndFragmentNames(
                 cachedFieldsAndFragmentNames,
                 fragmentType,
                 fragment.SelectionSet);
         }
 
-        private bool isInterfaceType(IType parentType)
+        private bool IsInterfaceType(NamedType parentType)
         {
-            return parentType is InterfaceType;
+            return _context.Schema.GetNamedType(parentType.Name) is InterfaceDefinition;
         }
 
-        private bool isObjectType(IType parentType)
+        private bool IsObjectDefinition(NamedType? parentType)
         {
-            return parentType is ObjectType;
+            return _context.Schema.GetNamedType(parentType.Name) is ObjectDefinition;
         }
 
         private static string ReasonMessage(Message reasonMessage)
@@ -659,22 +661,27 @@ private bool SameArguments(
 
                 var arg2 = arguments2[arg1.Key];
 
-                var value1 = ArgumentCoercion.CoerceArgumentValue(
-                    _context.Schema,
-                    _context.VariableValues,
-                    arg1.Key,
-                    fieldDefPair1.FieldDef.GetArgument(arg1.Key),
-                    arg1.Value);
-
-                var value2 = ArgumentCoercion.CoerceArgumentValue(
-                    _context.Schema,
-                    _context.VariableValues,
-                    arg1.Key,
-                    fieldDefPair2.FieldDef.GetArgument(arg1.Key),
-                    arg2);
-
-                return SameValue(value1, value2);
-            });
+                if (fieldDefPair1.FieldDef?.TryGetArgument(arg1.Key, out var argDef1) == true && fieldDefPair2.FieldDef?.TryGetArgument(arg1.Key, out var argDef2) == true)
+                {
+                    var value1 = ArgumentCoercion.CoerceArgumentValue(
+                        _context.Schema,
+                        _context.VariableValues,
+                        arg1.Key,
+                        argDef1,
+                        arg1.Value);
+
+                    var value2 = ArgumentCoercion.CoerceArgumentValue(
+                        _context.Schema,
+                        _context.VariableValues,
+                        arg1.Key,
+                        argDef2,
+                        arg2);
+
+                    return SameValue(value1, value2);
+                }
+
+                return false;
+                });
         }
 
         private bool SameValue(object arg1, object arg2)
@@ -743,8 +750,8 @@ private class FieldDefPair
         {
             public FieldSelection Field { get; set; }
 
-            public IField FieldDef { get; set; }
-            public IType ParentType { get; set; }
+            public FieldDefinition? FieldDef { get; set; }
+            public NamedType? ParentType { get; set; }
         }
 
         private class Message
diff --git a/src/graphql/Validation/IRuleVisitorContext.cs b/src/graphql/Validation/IRuleVisitorContext.cs
index f4f445773..0afd80b82 100644
--- a/src/graphql/Validation/IRuleVisitorContext.cs
+++ b/src/graphql/Validation/IRuleVisitorContext.cs
@@ -10,7 +10,7 @@ public interface IRuleVisitorContext
 
         ExecutableDocument Document { get; }
 
-        IReadOnlyDictionary<string, object> VariableValues { get; }
+        IReadOnlyDictionary<string, object?> VariableValues { get; }
 
         TypeTracker Tracker { get; }
 
diff --git a/src/graphql/Validation/RulesWalker.cs b/src/graphql/Validation/RulesWalker.cs
index 62d5c8f87..ea445a303 100644
--- a/src/graphql/Validation/RulesWalker.cs
+++ b/src/graphql/Validation/RulesWalker.cs
@@ -71,8 +71,8 @@ public List<VariableUsage> GetVariables(
                             usages.Add(new VariableUsage
                             {
                                 Node = node,
-                                Type = context.Tracker.GetInputType(),
-                                DefaultValue = context.Tracker.GetDefaultValue()
+                                Type = null,//context.Tracker.GetInputType(),
+                                DefaultValue = null,//context.Tracker.GetDefaultValue()
                             });
                         };
                     }
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index 03fa84a60..7c90b2efd 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -1,327 +1,17 @@
-using System;
 using System.Collections.Generic;
-using System.Linq;
-
-using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
-using Argument = Tanka.GraphQL.TypeSystem.Argument;
-
-namespace Tanka.GraphQL.Validation
-{
-    public class TypeTracker : RuleVisitor
-    {
-        private readonly Stack<object> _defaultValueStack = new Stack<object>();
-
-        private readonly Stack<(string Name, IField Field)?> _fieldDefStack = new Stack<(string Name, IField Field)?>();
-
-        private readonly Stack<IType> _inputTypeStack = new Stack<IType>();
-
-        private readonly Stack<INamedType> _parentTypeStack = new Stack<INamedType>();
-
-        private readonly Stack<IType> _typeStack = new Stack<IType>();
-        private Argument _argument;
-
-        private DirectiveType _directive;
-
-        private object _enumValue;
-
-        public TypeTracker(ISchema schema)
-        {
-            EnterSelectionSet = selectionSet =>
-            {
-                var namedType = GetNamedType(GetCurrentType());
-                var complexType = namedType as INamedType;
-                _parentTypeStack.Push(complexType);
-            };
-
-            EnterFieldSelection = selection =>
-            {
-                var parentType = GetParentType();
-                (string Name, IField Field)? fieldDef = null;
-                IType fieldType = null;
-
-                if (parentType != null)
-                {
-                    fieldDef = GetFieldDef(schema, parentType, selection);
-
-                    if (fieldDef != null) fieldType = fieldDef.Value.Field.Type;
-                }
-
-                _fieldDefStack.Push(fieldDef);
-                _typeStack.Push(TypeIs.IsOutputType(fieldType) ? fieldType : null);
-            };
-
-            EnterDirective = directive =>
-            {
-                _directive = schema.GetDirectiveType(directive.Name);
-            };
-
-            EnterOperationDefinition = definition =>
-            {
-                ObjectType type = null;
-                switch (definition.Operation)
-                {
-                    case OperationType.Query:
-                        type = schema.Query;
-                        break;
-                    case OperationType.Mutation:
-                        type = schema.Mutation;
-                        break;
-                    case OperationType.Subscription:
-                        type = schema.Subscription;
-                        break;
-                    default:
-                        throw new ArgumentOutOfRangeException();
-                }
-
-                _typeStack.Push(type);
-            };
-
-            EnterInlineFragment = inlineFragment =>
-            {
-                var typeConditionAst = inlineFragment.TypeCondition;
-
-                IType outputType;
-                if (typeConditionAst != null)
-                    outputType = Ast.TypeFromAst(schema, typeConditionAst);
-                else
-                    outputType = GetNamedType(GetCurrentType());
-
-                _typeStack.Push(TypeIs.IsOutputType(outputType) ? outputType : null);
-            };
-
-            EnterFragmentDefinition = node =>
-            {
-                var typeConditionAst = node.TypeCondition;
-
-                IType outputType;
-                if (typeConditionAst != null)
-                    outputType = Ast.TypeFromAst(schema, typeConditionAst);
-                else
-                    outputType = GetNamedType(GetCurrentType());
-
-                _typeStack.Push(TypeIs.IsOutputType(outputType) ? outputType : null);
-            };
-
-            EnterVariableDefinition = node =>
-            {
-                var inputType = Ast.TypeFromAst(schema, node.Type);
-                _inputTypeStack.Push(TypeIs.IsInputType(inputType) ? inputType : null);
-            };
-
-            EnterArgument = argument =>
-            {
-                Argument argDef = null;
-                IType argType = null;
-
-                if (GetDirective() != null)
-                {
-                    argDef = GetDirective()?.GetArgument(argument.Name);
-                    argType = argDef?.Type;
-                }
-                else if (GetFieldDef() != null)
-                {
-                    argDef = GetFieldDef()?.Field.GetArgument(argument.Name);
-                    argType = argDef?.Type;
-                }
-
-                _argument = argDef;
-                _defaultValueStack.Push(argDef?.DefaultValue);
-                _inputTypeStack.Push(TypeIs.IsInputType(argType) ? argType : null);
-            };
-
-            EnterListValue = node =>
-            {
-                var listType = GetNullableType(GetInputType());
-                var itemType = listType is List list ? list.OfType : listType;
-
-                // List positions never have a default value
-                _defaultValueStack.Push(null);
-                _inputTypeStack.Push(TypeIs.IsInputType(itemType) ? itemType : null);
-            };
-
-            EnterObjectField = node =>
-            {
-                var objectType = GetNamedType(GetInputType());
-                IType inputFieldType = null;
-                InputObjectField inputField = null;
-
-                if (objectType is InputObjectType inputObjectType)
-                {
-                    inputField = schema.GetInputField(
-                        inputObjectType.Name,
-                        node.Name);
-
-                    if (inputField != null)
-                        inputFieldType = inputField.Type;
-                }
-
-                _defaultValueStack.Push(inputField?.DefaultValue);
-                _inputTypeStack.Push(TypeIs.IsInputType(inputFieldType) ? inputFieldType : null);
-            };
-
-            EnterEnumValue = value =>
-            {
-                var maybeEnumType = GetNamedType(GetInputType());
-                object enumValue = null;
-
-                if (maybeEnumType is EnumType enumType)
-                    enumValue = enumType.ParseLiteral(value);
 
-                _enumValue = enumValue;
-            };
+namespace Tanka.GraphQL.Validation;
 
-            LeaveSelectionSet = _ => _parentTypeStack.Pop();
-
-            LeaveFieldSelection = _ =>
-            {
-                _fieldDefStack.Pop();
-                _typeStack.Pop();
-            };
-
-            LeaveDirective = _ => _directive = null;
-
-            LeaveOperationDefinition = _ => _typeStack.Pop();
-
-            LeaveInlineFragment = _ => _typeStack.Pop();
-
-            LeaveFragmentDefinition = _ => _typeStack.Pop();
-
-            LeaveVariableDefinition = _ => _inputTypeStack.Pop();
-
-            LeaveArgument = _ =>
-            {
-                _argument = null;
-                _defaultValueStack.Pop();
-                _inputTypeStack.Pop();
-            };
-
-            LeaveListValue = _ =>
-            {
-                _defaultValueStack.Pop();
-                _inputTypeStack.Pop();
-            };
-
-            LeaveObjectField = _ =>
-            {
-                _defaultValueStack.Pop();
-                _inputTypeStack.Pop();
-            };
-
-            LeaveEnumValue = _ => _enumValue = null;
-        }
-
-        public IType GetCurrentType()
-        {
-            if (_typeStack.Count == 0)
-                return null;
-
-            return _typeStack.Peek();
-        }
-
-        public INamedType GetParentType()
-        {
-            if (_parentTypeStack.Count == 0)
-                return null;
-
-            return _parentTypeStack.Peek();
-        }
-
-        //todo: originally returns an input type
-        public IType GetInputType()
-        {
-            if (_inputTypeStack.Count == 0)
-                return null;
-
-            return _inputTypeStack.Peek();
-        }
-
-        public IType GetParentInputType()
-        {
-            //todo: probably a bad idea
-            return _inputTypeStack.ElementAtOrDefault(_inputTypeStack.Count - 1);
-        }
-
-        public (string Name, IField Field)? GetFieldDef()
-        {
-            if (_fieldDefStack.Count == 0)
-                return null;
-
-            return _fieldDefStack.Peek();
-        }
-
-        public object GetDefaultValue()
-        {
-            if (_defaultValueStack.Count == 0)
-                return null;
-
-            return _defaultValueStack.Peek();
-        }
-
-        public DirectiveType GetDirective()
-        {
-            return _directive;
-        }
-
-        public Argument GetArgument()
-        {
-            return _argument;
-        }
-
-        public object GetEnumValue()
-        {
-            return _enumValue;
-        }
-
-        public IType GetNamedType(IType type)
-        {
-            return type?.Unwrap();
-        }
-
-        public IType GetNullableType(IType type)
-        {
-            if (type is NonNull nonNull)
-                return nonNull.OfType;
-
-            return null;
-        }
-
-        public (string Name, IField Field)? GetFieldDef(
-            ISchema schema,
-            IType parentType,
-            FieldSelection fieldNode)
-        {
-            var name = fieldNode.Name;
-            /*if (name == SchemaMetaFieldDef.name 
-                         && schema.getQueryType() == parentType) 
-            {
-                return SchemaMetaFieldDef;
-            }
-
-            if (name == TypeMetaFieldDef.name 
-                         && schema.getQueryType() == parentType) 
-            {
-                return TypeMetaFieldDef;
-            }
-
-            if (name == TypeNameMetaFieldDef.name 
-                         && isCompositeType(parentType)) 
-            {
-                return TypeNameMetaFieldDef;
-            }*/
-
-            if (parentType is ComplexType complexType)
-            {
-                var field = schema.GetField(complexType.Name, name);
-
-                if (field == null)
-                    return null;
+public class TypeTracker : RuleVisitor
+{
+    public Stack<NamedType?> ParentTypes { get; } = new();
 
-                return (name, field);
-            }
+    public TypeTracker(ISchema schema)
+    {
 
-            return null;
-        }
     }
+
+    public NamedType? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/ValidationResult.cs b/src/graphql/Validation/ValidationResult.cs
index 04fcea299..8bdfc07b2 100644
--- a/src/graphql/Validation/ValidationResult.cs
+++ b/src/graphql/Validation/ValidationResult.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,13 +7,13 @@ namespace Tanka.GraphQL.Validation
 {
     public class ValidationResult
     {
-        public static ValidationResult Success => new ValidationResult();
+        public IEnumerable<ValidationError> Errors { get; set; } = Array.Empty<ValidationError>();
 
-        public bool IsValid => !Errors.Any();
+        public IReadOnlyDictionary<string, object>? Extensions { get; set; }
 
-        public IEnumerable<ValidationError> Errors { get; set; } = new ValidationError[0];
+        public bool IsValid => !Errors.Any();
 
-        public IReadOnlyDictionary<string, object> Extensions { get; set; }
+        public static ValidationResult Success => new();
 
         public override string ToString()
         {
@@ -22,10 +23,7 @@ public override string ToString()
             if (!IsValid)
             {
                 builder.AppendLine("ExecutionErrors:");
-                foreach (var validationError in Errors)
-                {
-                    builder.AppendLine(validationError.ToString());
-                }
+                foreach (var validationError in Errors) builder.AppendLine(validationError.ToString());
             }
 
 
diff --git a/src/graphql/Validation/Validator.cs b/src/graphql/Validation/Validator.cs
index a0f49500f..d6f9c80c5 100644
--- a/src/graphql/Validation/Validator.cs
+++ b/src/graphql/Validation/Validator.cs
@@ -10,7 +10,7 @@ public static ValidationResult Validate(
             IEnumerable<CombineRule> rules,
             ISchema schema,
             ExecutableDocument document,
-            IReadOnlyDictionary<string, object> variableValues = null)
+            IReadOnlyDictionary<string, object?>? variableValues = null)
         {
             var visitor = new RulesWalker(
                 rules,
diff --git a/src/graphql/Validation/VariableUsage.cs b/src/graphql/Validation/VariableUsage.cs
index 5514f70b2..c4ba9bd9b 100644
--- a/src/graphql/Validation/VariableUsage.cs
+++ b/src/graphql/Validation/VariableUsage.cs
@@ -1,15 +1,12 @@
-
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public struct VariableUsage
 {
-    public struct VariableUsage
-    {
-        public Variable Node;
+    public Variable Node;
 
-        public IType Type;
+    public TypeBase Type;
 
-        public object DefaultValue;
-    }
+    public object DefaultValue;
 }
\ No newline at end of file
diff --git a/src/graphql/ValueCoercionException.cs b/src/graphql/ValueCoercionException.cs
index 55baa3558..c22d65625 100644
--- a/src/graphql/ValueCoercionException.cs
+++ b/src/graphql/ValueCoercionException.cs
@@ -1,19 +1,19 @@
 using System;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes;
 
 namespace Tanka.GraphQL
 {
     public class ValueCoercionException : Exception
     {
-        public IType Type { get; }
-
-        public ValueCoercionException(string message, object? value, IType type)
-            :base(message)
+        public ValueCoercionException(string message, object? value, INode type)
+            : base(message)
         {
             Type = type;
             Value = value;
         }
 
+        public INode Type { get; }
+
         public object? Value { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/CompleteValueResult.cs b/src/graphql/ValueResolution/CompleteValueResult.cs
index dee361795..e5c130737 100644
--- a/src/graphql/ValueResolution/CompleteValueResult.cs
+++ b/src/graphql/ValueResolution/CompleteValueResult.cs
@@ -3,7 +3,11 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
 namespace Tanka.GraphQL.ValueResolution
 {
@@ -11,31 +15,38 @@ public class CompleteValueResult : IResolverResult
     {
         private readonly object? _value;
 
-        public CompleteValueResult(object? value, IType actualType)
+        public CompleteValueResult(object? value, TypeDefinition actualType)
         {
             _value = value;
-            IsTypeOf = _ => actualType;
+            IsTypeOf = (_,_) => actualType;
         }
 
-        public CompleteValueResult(IEnumerable value, Func<object, IType> isTypeOf)
+        public CompleteValueResult(IEnumerable? value, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
         {
             _value = value;
             IsTypeOf = isTypeOf;
         }
 
-        public Func<object, IType> IsTypeOf { get; }
+        public CompleteValueResult(object? value)
+        {
+            _value = value;
+            IsTypeOf = (_, _) =>
+                throw new InvalidOperationException("Abstract type value was resolved without actual type or isTypeOf being provided.");
+        }
+
+        public Func<IResolverContext, object?, TypeDefinition> IsTypeOf { get; }
 
         public object? Value => _value;
 
-        public ValueTask<object> CompleteValueAsync(
+        public ValueTask<object?> CompleteValueAsync(
             IResolverContext context)
         {
             return CompleteValueAsync(_value, context.Field.Type, context.Path, context);
         }
 
-        private ValueTask<object> CompleteValueAsync(
+        private ValueTask<object?> CompleteValueAsync(
             object? value,
-            IType fieldType,
+            TypeBase fieldType,
             NodePath path,
             IResolverContext context)
         {
@@ -46,24 +57,27 @@ private ValueTask<object> CompleteValueAsync(
                     context.Selection);
             }
 
-
-            if (fieldType is NonNull nonNull)
-                return CompleteNonNullValueAsync(value, nonNull, path, context);
+            if (fieldType is NonNullType NonNullType)
+                return CompleteNonNullTypeValueAsync(value, NonNullType, path, context);
 
             if (value == null)
                 return default;
 
-            if (fieldType is List list)
+            if (fieldType is ListType list)
                 return CompleteListValueAsync(value, list, path, context);
 
-            return fieldType switch
+            if (fieldType is not NamedType namedType)
+                throw new InvalidOperationException("FieldType is not NamedType");
+
+            var typeDefinition = context.ExecutionContext.Schema.GetRequiredNamedType<TypeDefinition>(namedType.Name);
+            return  typeDefinition switch
             {
-                ScalarType scalarType => CompleteScalarType(value, scalarType, context),
-                EnumType enumType => CompleteEnumType(value, enumType, context),
-                ObjectType objectType => CompleteObjectValueAsync(value, objectType, path, context),
+                ScalarDefinition scalarType => CompleteScalarType(value, scalarType, context),
+                EnumDefinition enumType => CompleteEnumType(value, enumType, context),
+                ObjectDefinition objectDefinition => CompleteObjectValueAsync(value, objectDefinition, path, context),
 
-                InterfaceType interfaceType => CompleteInterfaceValueAsync(value, interfaceType, path, context),
-                UnionType unionType => CompleteUnionValueAsync(value, unionType, path, context),
+                InterfaceDefinition interfaceType => CompleteInterfaceValueAsync(value, interfaceType, path, context),
+                UnionDefinition unionDefinition => CompleteUnionValueAsync(value, unionDefinition, path, context),
                 _ => throw new CompleteValueException(
                     $"Cannot complete value for field {context.FieldName}. Cannot complete value of type {fieldType}.",
                     path,
@@ -71,37 +85,37 @@ private ValueTask<object> CompleteValueAsync(
             };
         }
 
-        private ValueTask<object> CompleteEnumType(object value, EnumType enumType, IResolverContext context)
+        private ValueTask<object?> CompleteEnumType(object? value, EnumDefinition enumType, IResolverContext context)
         {
             //todo: use similar pattern to scalars
-            return new ValueTask<object>(enumType.Serialize(value));
+            return new ValueTask<object?>(new EnumConverter(enumType).Serialize(value));
         }
 
-        private ValueTask<object> CompleteScalarType(object value, ScalarType scalarType, IResolverContext context)
+        private ValueTask<object?> CompleteScalarType(object? value, ScalarDefinition scalarType, IResolverContext context)
         {
-            var converter = context.ExecutionContext.Schema.GetValueConverter(scalarType.Name);
-            return new ValueTask<object>(converter.Serialize(value));
+            var converter = context.ExecutionContext.Schema.GetRequiredValueConverter(scalarType.Name);
+            return new ValueTask<object?>(converter.Serialize(value));
         }
 
-        private async ValueTask<object> CompleteUnionValueAsync(
+        private async ValueTask<object?> CompleteUnionValueAsync(
             object value,
-            UnionType unionType,
+            UnionDefinition unionDefinition,
             NodePath path,
             IResolverContext context)
         {
-            var actualType = IsTypeOf(value) as ObjectType;
+            var actualType = IsTypeOf(context, value) as ObjectDefinition;
 
             if (actualType == null)
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{unionType}'. " +
+                    $"Cannot complete value for field '{context.FieldName}':'{unionDefinition}'. " +
                     "ActualType is required for union values.",
                     path,
                     context.Selection);
 
-            if (!unionType.IsPossible(actualType))
+            if (!unionDefinition.HasMember(actualType.Name))
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{unionType}'. " +
-                    $"ActualType '{actualType}' is not possible for '{unionType}'",
+                    $"Cannot complete value for field '{context.FieldName}':'{unionDefinition}'. " +
+                    $"ActualType '{actualType}' is not possible for '{unionDefinition}'",
                     path,
                     context.Selection);
 
@@ -116,13 +130,13 @@ private async ValueTask<object> CompleteUnionValueAsync(
             return data;
         }
 
-        private async ValueTask<object> CompleteInterfaceValueAsync(
+        private async ValueTask<object?> CompleteInterfaceValueAsync(
             object value,
-            InterfaceType interfaceType,
+            InterfaceDefinition interfaceType,
             NodePath path,
             IResolverContext context)
         {
-            var actualType = IsTypeOf(value) as ObjectType;
+            var actualType = IsTypeOf(context, value) as ObjectDefinition;
 
             if (actualType == null)
                 throw new CompleteValueException(
@@ -131,7 +145,7 @@ private async ValueTask<object> CompleteInterfaceValueAsync(
                     path,
                     context.Selection);
 
-            if (!actualType.Implements(interfaceType))
+            if (!actualType.HasInterface(interfaceType.Name))
                 throw new CompleteValueException(
                     $"Cannot complete value for field '{context.FieldName}':'{interfaceType}'. " +
                     $"ActualType '{actualType}' does not implement interface '{interfaceType}'",
@@ -149,9 +163,9 @@ private async ValueTask<object> CompleteInterfaceValueAsync(
             return data;
         }
 
-        private static async ValueTask<object> CompleteObjectValueAsync(
+        private static async ValueTask<object?> CompleteObjectValueAsync(
             object value,
-            ObjectType objectType,
+            ObjectDefinition objectDefinition,
             NodePath path,
             IResolverContext context)
         {
@@ -159,25 +173,25 @@ private static async ValueTask<object> CompleteObjectValueAsync(
             var data = await SelectionSets.ExecuteSelectionSetAsync(
                 context.ExecutionContext,
                 subSelectionSet,
-                objectType,
+                objectDefinition,
                 value,
                 path);
 
             return data;
         }
 
-        private async ValueTask<object> CompleteNonNullValueAsync(
-            object value,
-            NonNull nonNull,
+        private async ValueTask<object?> CompleteNonNullTypeValueAsync(
+            object? value,
+            NonNullType NonNullType,
             NodePath path,
             IResolverContext context)
         {
-            var innerType = nonNull.OfType;
+            var innerType = NonNullType.OfType;
             var completedResult = await CompleteValueAsync(value, innerType, path, context);
 
             if (completedResult == null)
-                throw new NullValueForNonNullException(
-                    context.ObjectType.Name,
+                throw new NullValueForNonNullTypeException(
+                    context.ObjectDefinition.Name,
                     context.FieldName,
                     path,
                     context.Selection);
@@ -185,13 +199,13 @@ private async ValueTask<object> CompleteNonNullValueAsync(
             return completedResult;
         }
 
-        private async ValueTask<object> CompleteListValueAsync(
+        private async ValueTask<object?> CompleteListValueAsync(
             object value,
-            List list,
+            ListType list,
             NodePath path,
             IResolverContext context)
         {
-            if (!(value is IEnumerable values))
+            if (value is not IEnumerable values)
                 throw new CompleteValueException(
                     $"Cannot complete value for list field '{context.FieldName}':'{list}'. " +
                     "Resolved value is not a collection",
@@ -199,7 +213,7 @@ private async ValueTask<object> CompleteListValueAsync(
                     context.Selection);
 
             var innerType = list.OfType;
-            var result = new List<object>();
+            var result = new List<object?>();
             var i = 0;
             foreach (var resultItem in values)
             {
@@ -214,7 +228,7 @@ private async ValueTask<object> CompleteListValueAsync(
                 }
                 catch (Exception e)
                 {
-                    if (innerType is NonNull) throw;
+                    if (innerType is NonNullType) throw;
 
                     context.ExecutionContext.AddError(e);
                     result.Add(null);
diff --git a/src/graphql/ValueResolution/IResolverContext.cs b/src/graphql/ValueResolution/IResolverContext.cs
index 6e8a43efa..e98025b0f 100644
--- a/src/graphql/ValueResolution/IResolverContext.cs
+++ b/src/graphql/ValueResolution/IResolverContext.cs
@@ -2,21 +2,21 @@
 
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.ValueResolution
 {
     public interface IResolverContext
     {
-        ObjectType ObjectType { get; }
+        ObjectDefinition ObjectDefinition { get; }
 
-        object ObjectValue { get; }
+        object? ObjectValue { get; }
 
-        IField Field { get; }
+        FieldDefinition Field { get; }
 
         FieldSelection Selection { get; }
 
-        IReadOnlyDictionary<string, object> Arguments { get; }
+        IReadOnlyDictionary<string, object?> Arguments { get; }
 
         NodePath Path { get; }
 
diff --git a/src/graphql/ValueResolution/IResolverResult.cs b/src/graphql/ValueResolution/IResolverResult.cs
index 74990eb7e..65841c1ee 100644
--- a/src/graphql/ValueResolution/IResolverResult.cs
+++ b/src/graphql/ValueResolution/IResolverResult.cs
@@ -6,7 +6,7 @@ public interface IResolverResult
     {
         object? Value { get; }
 
-        ValueTask<object> CompleteValueAsync(
+        ValueTask<object?> CompleteValueAsync(
             IResolverContext context);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/NullValueForNonNullException.cs b/src/graphql/ValueResolution/NullValueForNonNullException.cs
index 96047162a..8289cba9f 100644
--- a/src/graphql/ValueResolution/NullValueForNonNullException.cs
+++ b/src/graphql/ValueResolution/NullValueForNonNullException.cs
@@ -4,9 +4,9 @@
 
 namespace Tanka.GraphQL.ValueResolution
 {
-    public class NullValueForNonNullException : CompleteValueException
+    public class NullValueForNonNullTypeException : CompleteValueException
     {
-        public NullValueForNonNullException(
+        public NullValueForNonNullTypeException(
             string type,
             string field,
             NodePath path,
diff --git a/src/graphql/ValueResolution/Resolve.cs b/src/graphql/ValueResolution/Resolve.cs
index 52149fff6..0212eade8 100644
--- a/src/graphql/ValueResolution/Resolve.cs
+++ b/src/graphql/ValueResolution/Resolve.cs
@@ -3,33 +3,33 @@
 using System.Collections.Generic;
 using System.Threading;
 using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.ValueResolution
 {
     public static class Resolve
     {
-        public static IResolverResult As(object result)
+        public static IResolverResult As(object? result)
         {
-            return new CompleteValueResult(result, null);
+            return new CompleteValueResult(result);
         }
 
-        public static IResolverResult As(ObjectType type, object result)
+        public static IResolverResult As(ObjectDefinition type, object? result)
         {
             return new CompleteValueResult(result, type);
         }
 
-        public static IResolverResult As(IEnumerable result)
+        public static IResolverResult As(IEnumerable? result)
         {
-            return new CompleteValueResult(result, null);
+            return new CompleteValueResult(result);
         }
 
-        public static IResolverResult As(IEnumerable result, Func<object, IType> isTypeOf)
+        public static IResolverResult As(IEnumerable? result, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
         {
             return new CompleteValueResult(result, isTypeOf);
         }
 
-        public static Resolver PropertyOf<T>(Func<T, object> getValue)
+        public static Resolver PropertyOf<T>(Func<T, object?> getValue)
         {
             return context =>
             {
@@ -42,7 +42,7 @@ public static Resolver PropertyOf<T>(Func<T, object> getValue)
             };
         }
 
-        public static Resolver PropertyOf<T>(Func<T, IEnumerable<object>> getValue)
+        public static Resolver PropertyOf<T>(Func<T, IEnumerable<object?>?> getValue)
         {
             return context =>
             {
diff --git a/src/graphql/ValueResolution/ResolveSync.cs b/src/graphql/ValueResolution/ResolveSync.cs
index eba7928ca..0de2b472b 100644
--- a/src/graphql/ValueResolution/ResolveSync.cs
+++ b/src/graphql/ValueResolution/ResolveSync.cs
@@ -2,7 +2,7 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.ValueResolution
 {
@@ -14,24 +14,24 @@ public static ValueTask<ISubscriberResult> Subscribe<T>(EventChannel<T> eventCha
             return new ValueTask<ISubscriberResult>(eventChannel.Subscribe(unsubscribe));
         }
 
-        public static ValueTask<IResolverResult> As(object result)
+        public static ValueTask<IResolverResult> As(object? result)
         {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result, null));
+            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
         }
 
-        public static ValueTask<IResolverResult> As(string result)
+        public static ValueTask<IResolverResult> As(string? result)
         {
-            return new ValueTask<IResolverResult>(new CompleteValueResult((object)result, null));
+            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
         }
 
-        public static ValueTask<IResolverResult> As(ObjectType type, object result)
+        public static ValueTask<IResolverResult> As(ObjectDefinition type, object? result)
         {
             return new ValueTask<IResolverResult>(new CompleteValueResult(result, type));
         }
 
-        public static ValueTask<IResolverResult> As(IEnumerable result)
+        public static ValueTask<IResolverResult> As(IEnumerable? result)
         {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result, null));
+            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolverBuilder.cs b/src/graphql/ValueResolution/ResolverBuilder.cs
index 0e6eba48c..8d97eabd2 100644
--- a/src/graphql/ValueResolution/ResolverBuilder.cs
+++ b/src/graphql/ValueResolution/ResolverBuilder.cs
@@ -1,13 +1,13 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Tanka.GraphQL.ValueResolution
 {
     public class ResolverBuilder
     {
-        private readonly List<ResolverMiddleware> _middlewares
-            = new List<ResolverMiddleware>();
+        private readonly List<ResolverMiddleware> _middlewares = new();
 
-        private Resolver _root;
+        private Resolver? _root;
 
         public ResolverBuilder(Resolver root)
         {
@@ -42,7 +42,10 @@ public ResolverBuilder Run(Resolver resolver)
 
         public Resolver Build()
         {
-            Resolver resolver = _root;
+            if (_root is null)
+                throw new InvalidOperationException($"Resolver chain is missing ending. Use {nameof(Run)} to end the chain.");
+
+            var resolver = _root;
             foreach (var middleware in _middlewares)
             {
                 var resolver1 = resolver;
diff --git a/src/graphql/ValueResolution/ResolverContext.cs b/src/graphql/ValueResolution/ResolverContext.cs
index 926b0cdf9..67878b2cc 100644
--- a/src/graphql/ValueResolution/ResolverContext.cs
+++ b/src/graphql/ValueResolution/ResolverContext.cs
@@ -3,6 +3,7 @@
 
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.ValueResolution
@@ -10,16 +11,16 @@ namespace Tanka.GraphQL.ValueResolution
     public class ResolverContext : IResolverContext
     {
         public ResolverContext(
-            ObjectType objectType,
-            object objectValue,
-            IField field,
+            ObjectDefinition objectDefinition,
+            object? objectValue,
+            FieldDefinition field,
             FieldSelection selection,
             IReadOnlyCollection<FieldSelection> fields,
             IReadOnlyDictionary<string, object?> arguments,
             NodePath path,
             IExecutorContext executionContext)
         {
-            ObjectType = objectType ?? throw new ArgumentNullException(nameof(objectType));
+            ObjectDefinition = objectDefinition ?? throw new ArgumentNullException(nameof(objectDefinition));
             ObjectValue = objectValue;
             Field = field ?? throw new ArgumentNullException(nameof(field));
             Selection = selection ?? throw new ArgumentNullException(nameof(selection));
@@ -33,17 +34,17 @@ public ResolverContext(
 
         public ISchema Schema => ExecutionContext.Schema;
 
-        public ObjectType ObjectType { get; }
+        public ObjectDefinition ObjectDefinition { get; }
 
-        public object ObjectValue { get; }
+        public object? ObjectValue { get; }
 
-        public IField Field { get; }
+        public FieldDefinition Field { get; }
 
         public FieldSelection Selection { get; }
         
         public IReadOnlyCollection<FieldSelection> Fields { get; }
 
-        public IReadOnlyDictionary<string, object> Arguments { get; }
+        public IReadOnlyDictionary<string, object?> Arguments { get; }
 
         public NodePath Path { get; }
 
diff --git a/src/graphql/ValueResolution/ResolverContextExtensions.cs b/src/graphql/ValueResolution/ResolverContextExtensions.cs
index b983b4f3a..b929a29b5 100644
--- a/src/graphql/ValueResolution/ResolverContextExtensions.cs
+++ b/src/graphql/ValueResolution/ResolverContextExtensions.cs
@@ -5,13 +5,13 @@ namespace Tanka.GraphQL.ValueResolution
 {
     public static class ResolverContextExtensions
     {
-        public static T GetArgument<T>(this IResolverContext context, string name)
+        public static T? GetArgument<T>(this IResolverContext context, string name)
         {
             if (!context.Arguments.TryGetValue(name, out var arg))
                 throw new ArgumentOutOfRangeException(nameof(name), name,
                     $"Field '{context.FieldName}' does not contain argument with name '{name}''");
 
-            return (T) arg;
+            return (T?) arg;
         }
 
         
@@ -24,11 +24,14 @@ public static T GetArgument<T>(this IResolverContext context, string name)
         /// <typeparam name="T"></typeparam>
         /// <param name="name"></param>
         /// <returns></returns>
-        public static T GetObjectArgument<T>(this IResolverContext context, string name)
+        public static T? GetObjectArgument<T>(this IResolverContext context, string name)
             where T : IReadFromObjectDictionary, new()
         {
             var arg = context.GetArgument<IReadOnlyDictionary<string, object>>(name);
 
+            if (arg is null)
+                return default;
+
             var value = new T();
             value.Read(arg);
             return value;
@@ -43,7 +46,7 @@ public static T GetObjectArgument<T>(this IResolverContext context, string name)
         /// <typeparam name="T"></typeparam>
         /// <param name="name"></param>
         /// <returns></returns>
-        public static IEnumerable<T> GetObjectArgumentList<T>(this IResolverContext context, string name)
+        public static IEnumerable<T?> GetObjectArgumentList<T>(this IResolverContext context, string name)
             where T : IReadFromObjectDictionary, new()
         {
             var arg = context.GetArgument<IEnumerable<IReadOnlyDictionary<string, object>>>(name);
diff --git a/src/graphql/ValueResolution/SchemaBuilderExtensions.cs b/src/graphql/ValueResolution/SchemaBuilderExtensions.cs
deleted file mode 100644
index a941e0cf8..000000000
--- a/src/graphql/ValueResolution/SchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,35 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.ValueResolution
-{
-    public static class SchemaBuilderExtensions
-    {
-        public static SchemaBuilder UseResolversAndSubscribers(
-            this SchemaBuilder builder,
-            IResolverMap resolvers,
-            ISubscriberMap subscribers = null)
-        {
-            foreach (var type in builder.GetTypes<ObjectType>())
-                builder.Connections(connections =>
-                {
-                    foreach (var field in connections.GetFields(type))
-                    {
-                        var resolver = resolvers.GetResolver(type.Name, field.Key);
-
-                        if (resolver != null)
-                            connections.GetOrAddResolver(type, field.Key)
-                                .Run(resolver);
-
-                        var subscriber = subscribers?.GetSubscriber(type.Name, field.Key);
-
-                        if (subscriber != null)
-                            connections.GetOrAddSubscriber(type, field.Key)
-                                .Run(subscriber);
-                    }
-                });
-
-            return builder;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql/VariableException.cs b/src/graphql/VariableException.cs
index 91af50e38..d7672e31d 100644
--- a/src/graphql/VariableException.cs
+++ b/src/graphql/VariableException.cs
@@ -1,18 +1,18 @@
 using System;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes;
 
 namespace Tanka.GraphQL
 {
     public class VariableException : Exception
     {
-        public VariableException(string message, string variableName, IType variableType): base(message)
+        public VariableException(string message, string variableName, INode variableType) : base(message)
         {
             VariableName = variableName;
             VariableType = variableType;
         }
 
-        public IType VariableType { get; set; }
-
         public string VariableName { get; set; }
+
+        public INode VariableType { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/graphql.csproj b/src/graphql/graphql.csproj
index ca70b8013..a8a97244b 100644
--- a/src/graphql/graphql.csproj
+++ b/src/graphql/graphql.csproj
@@ -1,20 +1,26 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.1</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <AssemblyName>tanka.graphql</AssemblyName>
     <RootNamespace>Tanka.GraphQL</RootNamespace>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="5.0.2" />
-    <PackageReference Include="System.Threading.Channels" Version="5.0.0" />
+    <Compile Remove="Extensions\**" />
+    <EmbeddedResource Remove="Extensions\**" />
+    <None Remove="Extensions\**" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Text.Json" Version="6.0.2" />
+    <PackageReference Include="System.Threading.Channels" Version="6.0.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj b/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
index 03144d393..799a2f9fd 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>Tanka.GraphQL.Extensions.ApolloFederation.Tests</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Extensions.ApolloFederation.Tests</RootNamespace>
diff --git a/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj b/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj
index 3925e889e..9d052dd39 100644
--- a/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj
+++ b/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <RootNamespace>Tanka.GraphQL.Generator.Integration.Tests</RootNamespace>
     <AssemblyName>Tanka.GraphQL.Generator.Integration.Tests</AssemblyName>
diff --git a/tests/graphql.language.tests/graphql.language.tests.csproj b/tests/graphql.language.tests/graphql.language.tests.csproj
index 5782a9ac8..d08f68ddd 100644
--- a/tests/graphql.language.tests/graphql.language.tests.csproj
+++ b/tests/graphql.language.tests/graphql.language.tests.csproj
@@ -18,14 +18,14 @@
     </Content>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
-    <PackageReference Include="NSubstitute" Version="4.2.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="NSubstitute" Version="4.3.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.0.3">
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
index fe2125979..3d369e0a4 100644
--- a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
+++ b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.server.links.tests</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Server.Links.Tests</RootNamespace>
diff --git a/tests/graphql.server.tests.host/graphql.server.tests.host.csproj b/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
index 1e449c175..0adf2ae8e 100644
--- a/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
+++ b/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <RootNamespace>Tanka.GraphQL.Server.Tests.Host</RootNamespace>
     <AssemblyName>tanka.graphql.server.tests.host</AssemblyName>
     <IsPackable>false</IsPackable>
diff --git a/tests/graphql.server.tests/graphql.server.tests.csproj b/tests/graphql.server.tests/graphql.server.tests.csproj
index 7e90924e0..f2d929310 100644
--- a/tests/graphql.server.tests/graphql.server.tests.csproj
+++ b/tests/graphql.server.tests/graphql.server.tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.server.tests</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Server.Tests</RootNamespace>
diff --git a/tests/graphql.tests.data/graphql.tests.data.csproj b/tests/graphql.tests.data/graphql.tests.data.csproj
index d15eac7e2..45fdbca53 100644
--- a/tests/graphql.tests.data/graphql.tests.data.csproj
+++ b/tests/graphql.tests.data/graphql.tests.data.csproj
@@ -1,13 +1,19 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.1;net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <AssemblyName>tanka.graphql.tests.data</AssemblyName>
     <RootNamespace>Tanka.Graphql.Tests.Data</RootNamespace>
     <IsPackable>false</IsPackable>
     <IsTestProject>false</IsTestProject>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="starwars\**" />
+    <EmbeddedResource Remove="starwars\**" />
+    <None Remove="starwars\**" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
diff --git a/tests/graphql.tests.data/starwars/StarwarsSchema.cs b/tests/graphql.tests.data/starwars/StarwarsSchema.cs
index 2e0f6a2bb..5cca37465 100644
--- a/tests/graphql.tests.data/starwars/StarwarsSchema.cs
+++ b/tests/graphql.tests.data/starwars/StarwarsSchema.cs
@@ -1,3 +1,5 @@
+using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.TypeSystem;
 
@@ -18,13 +20,13 @@ public static SchemaBuilder Create()
 
             builder.Include(Episode);
 
-            var EpisodeList = new List(Episode);
+            var EpisodeList = new ListType(Episode);
 
             builder.Interface("Character", out var Character,
                 "Character in the movie");
 
             // use NamedTypeReference as proxy to bypass circular dependencies
-            var CharacterList = new List(Character);
+            var CharacterList = new List<>(Character);
 
             builder.Connections(connect => connect
                 .Field(Character, "id", ScalarType.NonNullString)
diff --git a/tests/graphql.tests/ExecutionPathFacts.cs b/tests/graphql.tests/ExecutionPathFacts.cs
index bb5c1bb6c..712a7d606 100644
--- a/tests/graphql.tests/ExecutionPathFacts.cs
+++ b/tests/graphql.tests/ExecutionPathFacts.cs
@@ -1,8 +1,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
@@ -15,24 +14,25 @@ public ExecutionPathFacts()
             // schema
             var builder = new SchemaBuilder();
 
-            builder.Object("Node", out var node)
-                .Connections(connect => connect
-                    .Field(node, "child", node)
-                    .Field(node, "path", new List(ScalarType.String))
-                    .Field(node, "value", ScalarType.String)
-                    .Field(node, "children", new List(node)));
-
-            builder.Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "root", node));
+            builder.Add((TypeSystemDocument)@"
+type Node {
+    child: Node
+    path: [String]
+    value: String
+    children: [Node]
+}
 
-            builder.Mutation(out var mutation)
-                .Connections(connect => connect
-                    .Field(mutation, "root", node));
+type Query {
+    root: Node
+}
 
-            var schema = builder.Build();
+type Mutation {
+    root: Node
+}
 
-            var resolvers = new ObjectTypeMap
+");
+            
+            var resolvers = new ResolversMap()
             {
                 {
                     "Query", new FieldResolversMap
@@ -63,7 +63,7 @@ public ExecutionPathFacts()
                 }
             };
 
-            _schema = SchemaTools.MakeExecutableSchema(schema, resolvers);
+            _schema = builder.Build(resolvers).Result;
         }
 
         private readonly ISchema _schema;
@@ -93,7 +93,7 @@ mutation Root {
             var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
                 Schema = _schema,
-                Document = Parser.ParseDocument(query)
+                Document = query
             });
 
             /* Then */
@@ -146,7 +146,7 @@ public async Task Query_path_should_match()
             var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
                 Schema = _schema,
-                Document = Parser.ParseDocument(query)
+                Document = query
             });
 
             /* Then */
diff --git a/tests/graphql.tests/ExecutorFacts.cs b/tests/graphql.tests/ExecutorFacts.cs
index d9b65fca9..5283588d9 100644
--- a/tests/graphql.tests/ExecutorFacts.cs
+++ b/tests/graphql.tests/ExecutorFacts.cs
@@ -3,20 +3,18 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 using Xunit.Abstractions;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class ExecutorFacts
 {
-    public class ExecutorFacts
-    {
-        public const string Sdl = @"
+    public const string Sdl = @"
                 enum EventType {
                     INSERT
                     UPDATE
@@ -64,116 +62,101 @@ type Subscription {
                 }
                 ";
 
-        public ExecutorFacts(ITestOutputHelper atr)
+    public ExecutorFacts(ITestOutputHelper atr)
+    {
+        Model = new EventsModel();
+        Resolvers = new ResolversMap
         {
-            Model = new EventsModel();
-            Resolvers = new ObjectTypeMap
             {
+                "Success", new FieldResolversMap
                 {
-                    "Success", new FieldResolversMap
-                    {
-                        {"id", Resolve.PropertyOf<EventsModel.Success>(m => m.Id)},
-                        {"event", Resolve.PropertyOf<EventsModel.Success>(m => m.Event)}
-                    }
-                },
+                    { "id", Resolve.PropertyOf<EventsModel.Success>(m => m.Id) },
+                    { "event", Resolve.PropertyOf<EventsModel.Success>(m => m.Event) }
+                }
+            },
+            {
+                "Failure", new FieldResolversMap
                 {
-                    "Failure", new FieldResolversMap
-                    {
-                        {"message", Resolve.PropertyOf<EventsModel.Failure>(m => m.Message)}
-                    }
-                },
+                    { "message", Resolve.PropertyOf<EventsModel.Failure>(m => m.Message) }
+                }
+            },
+            {
+                "Event", new FieldResolversMap
                 {
-                    "Event", new FieldResolversMap
-                    {
-                        {"id", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Id)},
-                        {"type", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Type)},
-                        {"payload", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Payload)}
-                    }
-                },
+                    { "id", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Id) },
+                    { "type", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Type) },
+                    { "payload", Resolve.PropertyOf<EventsModel.Event>(ev => ev.Payload) }
+                }
+            },
+            {
+                "NewEvent", new FieldResolversMap
                 {
-                    "NewEvent", new FieldResolversMap
-                    {
-                        {"type", Resolve.PropertyOf<EventsModel.NewEvent>(type => type.Type)},
-                        {"payload", Resolve.PropertyOf<EventsModel.NewEvent>(type => type.Payload)}
-                    }
-                },
+                    { "type", Resolve.PropertyOf<EventsModel.NewEvent>(type => type.Type) },
+                    { "payload", Resolve.PropertyOf<EventsModel.NewEvent>(type => type.Payload) }
+                }
+            },
+            {
+                "Query", new FieldResolversMap
                 {
-                    "Query", new FieldResolversMap
-                    {
-                        {"events", context => new ValueTask<IResolverResult>(Resolve.As(Model.Events))}
-                    }
-                },
+                    { "events", context => new ValueTask<IResolverResult>(Resolve.As(Model.Events)) }
+                }
+            },
+            {
+                "Mutation", new FieldResolversMap
                 {
-                    "Mutation", new FieldResolversMap
                     {
+                        "create", async context =>
                         {
-                            "create", async context =>
-                            {
-                                var newEvent = context.GetObjectArgument<EventsModel.NewEvent>("event");
+                            var newEvent = context.GetObjectArgument<EventsModel.NewEvent>("event");
 
-                                if (newEvent.Payload == null)
-                                    return Resolve.As(
-                                        context.ExecutionContext.Schema.GetNamedType<ObjectType>("Failure"),
-                                        new EventsModel.Failure("Payload should be given"));
+                            if (newEvent.Payload == null)
+                                return Resolve.As(
+                                    context.ExecutionContext.Schema.GetRequiredNamedType<ObjectDefinition>("Failure"),
+                                    new EventsModel.Failure("Payload should be given"));
 
-                                var id = await Model.AddAsync(newEvent);
-                                var ev = Model.Events.Single(e => e.Id == id);
+                            var id = await Model.AddAsync(newEvent);
+                            var ev = Model.Events.Single(e => e.Id == id);
 
-                                return Resolve.As(
-                                    context.ExecutionContext.Schema.GetNamedType<ObjectType>("Success"),
-                                    new EventsModel.Success(id, ev));
-                            }
+                            return Resolve.As(
+                                context.ExecutionContext.Schema.GetRequiredNamedType<ObjectDefinition>("Success"),
+                                new EventsModel.Success(id, ev));
                         }
                     }
-                },
+                }
+            },
+            {
+                "Subscription", new FieldResolversMap
                 {
-                    "Subscription", new FieldResolversMap
                     {
+                        "events", async (context, unsubscribe) =>
                         {
-                            "events", async (context, unsubscribe) =>
-                            {
-                                await Task.Delay(0);
-                                var source = Model.Subscribe(unsubscribe);
-                                return source;
-                            },
-                            context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))
-                        }
+                            await Task.Delay(0);
+                            var source = Model.Subscribe(unsubscribe);
+                            return source;
+                        },
+                        context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))
                     }
                 }
-            };
+            }
+        };
 
-            Schema = SchemaTools.MakeExecutableSchema(
-                new SchemaBuilder().Sdl(Sdl),
-                Resolvers,
-                Resolvers);
-        }
+        Schema = new SchemaBuilder()
+            .Add((TypeSystemDocument)Sdl)
+            .Build(Resolvers, Resolvers).Result;
+    }
 
-        public ObjectTypeMap Resolvers { get; set; }
+    public EventsModel Model { get; set; }
 
-        public EventsModel Model { get; set; }
+    public ResolversMap Resolvers { get; set; }
 
-        public ISchema Schema { get; set; }
+    public ISchema Schema { get; set; }
 
-        private static Dictionary<string, object> NewEvent(EventsModel.EventType type, string payload)
-        {
-            return new Dictionary<string, object>
-            {
-                {
-                    "event", new Dictionary<string, object>
-                    {
-                        {"type", type},
-                        {"payload", payload}
-                    }
-                }
-            };
-        }
-
-        [Fact]
-        public async Task Mutation1()
-        {
-            /* Given */
-            var mutation = Parser.ParseDocument(
-                @"mutation AddEvent($event: NewEvent!) {
+    [Fact]
+    public async Task Mutation1()
+    {
+        /* Given */
+        var mutation = 
+            @"mutation AddEvent($event: NewEvent!) {
                     create(event: $event) {
                         __typename
                         ...on Success {
@@ -187,21 +170,21 @@ ...on Failure {
                             message
                         }
                     }
-                }");
+                }";
 
-            var variables = NewEvent(EventsModel.EventType.INSERT, "payload");
+        var variables = NewEvent(EventsModel.EventType.INSERT, "payload");
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = Schema,
-                Document = mutation,
-                VariableValues = variables
-            });
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = Schema,
+            Document = mutation,
+            VariableValues = variables
+        });
+
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""create"": {
                       ""__typename"": ""Success"",
@@ -212,14 +195,14 @@ ...on Failure {
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Mutation2()
-        {
-            /* Given */
-            var mutation = Parser.ParseDocument(
-                @"mutation AddEvent($event: NewEvent!) {
+    [Fact]
+    public async Task Mutation2()
+    {
+        /* Given */
+        var mutation = 
+            @"mutation AddEvent($event: NewEvent!) {
                     create(event: $event) {
                         __typename
                         ...on Success {
@@ -230,21 +213,21 @@ ...on Failure {
                             message
                         }
                     }
-                }");
+                }";
 
-            var variables = NewEvent(EventsModel.EventType.INSERT, null);
+        var variables = NewEvent(EventsModel.EventType.INSERT, null);
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = Schema,
-                Document = mutation,
-                VariableValues = variables
-            });
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = Schema,
+            Document = mutation,
+            VariableValues = variables
+        });
+
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""create"": {
                       ""__typename"": ""Failure"",
@@ -252,44 +235,44 @@ ...on Failure {
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Query()
+    [Fact]
+    public async Task Query()
+    {
+        /* Given */
+        await Model.AddAsync(new EventsModel.NewEvent
         {
-            /* Given */
-            await Model.AddAsync(new EventsModel.NewEvent()
-            {
-                Type = EventsModel.EventType.DELETE,
-                Payload = "payload1"
-            });
+            Type = EventsModel.EventType.DELETE,
+            Payload = "payload1"
+        });
 
-            await Model.AddAsync(new EventsModel.NewEvent()
-            {
-                Type = EventsModel.EventType.UPDATE,
-                Payload = "payload2"
-            });
+        await Model.AddAsync(new EventsModel.NewEvent
+        {
+            Type = EventsModel.EventType.UPDATE,
+            Payload = "payload2"
+        });
 
-            var query = Parser.ParseDocument(
-                @"{
+        var query =
+            @"{
                     events {
                         __typename
                         id
                         type
                         payload
                     }
-                }");
+                }";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = Schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = Schema,
+            Document = query
+        });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""events"": [
                       {
@@ -307,45 +290,45 @@ await Model.AddAsync(new EventsModel.NewEvent()
                     ]
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Subscription()
-        {
-            /* Given */
-            var subscription = Parser.ParseDocument(
-                @"subscription {
+    [Fact]
+    public async Task Subscription()
+    {
+        /* Given */
+        var subscription =
+            @"subscription {
                     events {
                         __typename
                         id
                         type
                         payload
                     }
-                }");
+                }";
 
-            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+        var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
 
-            /* When */
-            var result = await Executor.SubscribeAsync(new ExecutionOptions()
-            {
-                Schema = Schema,
-                Document = subscription
-            }, cts.Token);
+        /* When */
+        var result = await Executor.SubscribeAsync(new ExecutionOptions
+        {
+            Schema = Schema,
+            Document = subscription
+        }, cts.Token);
 
-            await Model.AddAsync(new EventsModel.NewEvent()
-            {
-                Type = EventsModel.EventType.DELETE,
-                Payload = "payload1"
-            });
+        await Model.AddAsync(new EventsModel.NewEvent
+        {
+            Type = EventsModel.EventType.DELETE,
+            Payload = "payload1"
+        });
 
-            var ev = await result.Source.Reader.ReadAsync(cts.Token);
+        var ev = await result.Source.Reader.ReadAsync(cts.Token);
 
-            // unsubscribe
-            cts.Cancel();
+        // unsubscribe
+        cts.Cancel();
 
-            /* Then */
-            ev.ShouldMatchJson(
-                @"{
+        /* Then */
+        ev.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""events"": {
                       ""type"": ""DELETE"",
@@ -355,6 +338,19 @@ await Model.AddAsync(new EventsModel.NewEvent()
                     }
                   }
                 }");
-        }
+    }
+
+    private static Dictionary<string, object> NewEvent(EventsModel.EventType type, string payload)
+    {
+        return new Dictionary<string, object>
+        {
+            {
+                "event", new Dictionary<string, object>
+                {
+                    { "type", type },
+                    { "payload", payload }
+                }
+            }
+        };
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Language/ImportProviders/EmbeddedResourceImportProviderFacts.cs b/tests/graphql.tests/Language/ImportProviders/EmbeddedResourceImportProviderFacts.cs
index cbe094a4b..ff172af90 100644
--- a/tests/graphql.tests/Language/ImportProviders/EmbeddedResourceImportProviderFacts.cs
+++ b/tests/graphql.tests/Language/ImportProviders/EmbeddedResourceImportProviderFacts.cs
@@ -1,51 +1,47 @@
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
+using System.Threading.Tasks;
 using Tanka.GraphQL.Language.ImportProviders;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Language.ImportProviders
+namespace Tanka.GraphQL.Tests.Language.ImportProviders;
+
+public class EmbeddedResourceImportProviderFacts
 {
-    public class EmbeddedResourceImportProviderFacts
+    private readonly string _embeddedResourceName;
+    private readonly ParserOptions _options;
+
+    private readonly EmbeddedResourceImportProvider _sut;
+
+    public EmbeddedResourceImportProviderFacts()
+    {
+        _options = ParserOptions.Sdl;
+        _sut = new EmbeddedResourceImportProvider();
+        _embeddedResourceName = "Tanka.GraphQL.Tests.Files.Embedded.graphql";
+    }
+
+    [Fact]
+    public void Can_import()
     {
-        public EmbeddedResourceImportProviderFacts()
-        {
-            _options = ParserOptions.Sdl;
-            _sut = new EmbeddedResourceImportProvider();
-            _embeddedResourceName = "Tanka.GraphQL.Tests.Files.Embedded.graphql";
-        }
-
-        private readonly EmbeddedResourceImportProvider _sut;
-        private readonly string _embeddedResourceName;
-        private readonly ParserOptions _options;
-
-        [Fact]
-        public void Can_import()
-        {
-            /* Given */
-            var importPath = $"embedded://tanka.graphql.tests/{_embeddedResourceName}";
-
-            /* When */
-            /* Then */
-            Assert.True(_sut.CanImport(importPath, null));
-        }
-
-        [Fact]
-        public async Task Import()
-        {
-            /* Given */
-            var importPath = $"embedded://tanka.graphql.tests/{_embeddedResourceName}";
-
-            /* When */
-            var typeDefs = await _sut.ImportAsync(importPath, null, _options);
-
-            /* Then */
-            Assert.NotNull(typeDefs.DirectiveDefinitions);
-            Assert.Single(
-                typeDefs.DirectiveDefinitions,
-                dt => dt.Name == "directive");
-        }
+        /* Given */
+        var importPath = $"embedded://tanka.graphql.tests/{_embeddedResourceName}";
+
+        /* When */
+        /* Then */
+        Assert.True(_sut.CanImport(importPath, null));
+    }
+
+    [Fact]
+    public async Task Import()
+    {
+        /* Given */
+        var importPath = $"embedded://tanka.graphql.tests/{_embeddedResourceName}";
+
+        /* When */
+        var typeDefs = await _sut.ImportAsync(importPath, null, _options);
+
+        /* Then */
+        Assert.NotNull(typeDefs.DirectiveDefinitions);
+        Assert.Single(
+            typeDefs.DirectiveDefinitions,
+            dt => dt.Name == "directive");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs b/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
index a674d244e..dbfd857fe 100644
--- a/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
+++ b/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
@@ -1,6 +1,4 @@
 using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
@@ -24,18 +22,20 @@ type Query {
                  ";
 
             /* When */
-            var builder = await new SchemaBuilder()
+            var builder = new SchemaBuilder()
                 // BuiltIn import providers are used
-                .SdlAsync(sdl);
+                .Add(sdl);
 
-            var schema = builder.Build();
+            var schema = await builder.Build(new SchemaBuildOptions());
 
             /* Then */
-            var importedType = schema.GetNamedType<ObjectType>("ImportedType");
+            var importedType = schema.GetNamedType("ImportedType");
             Assert.NotNull(importedType);
+           
             var importedField = schema.GetField(schema.Query.Name, "imported");
-            Assert.Same(importedType, importedField.Type.Unwrap());
-            var nestedType = schema.GetNamedType<ObjectType>("NestedObject");
+            Assert.Equal(importedType.Name, importedField.Type.Unwrap().Name);
+            
+            var nestedType = schema.GetNamedType("NestedObject");
             Assert.NotNull(nestedType);
         }
     }
diff --git a/tests/graphql.tests/Language/ImportProviders/FileSystemImportProviderFacts.cs b/tests/graphql.tests/Language/ImportProviders/FileSystemImportProviderFacts.cs
index b26005e35..fd6fa8adf 100644
--- a/tests/graphql.tests/Language/ImportProviders/FileSystemImportProviderFacts.cs
+++ b/tests/graphql.tests/Language/ImportProviders/FileSystemImportProviderFacts.cs
@@ -1,51 +1,47 @@
-using System.Linq;
-using System.Threading.Tasks;
-
+using System.Threading.Tasks;
 using Tanka.GraphQL.Language.ImportProviders;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Language.ImportProviders
+namespace Tanka.GraphQL.Tests.Language.ImportProviders;
+
+public class FileSystemImportProviderFacts
 {
-    public class FileSystemImportProviderFacts
+    private readonly string _importedFileName;
+    private readonly ParserOptions _options;
+    private readonly FileSystemImportProvider _sut;
+
+    public FileSystemImportProviderFacts()
+    {
+        _options = new ParserOptions();
+        _sut = new FileSystemImportProvider();
+        _options.ImportProviders.Add(_sut);
+        _importedFileName = "Files/Import.graphql";
+    }
+
+    [Fact]
+    public void Can_Import()
     {
-        private ParserOptions _options;
-        private FileSystemImportProvider _sut;
-        private string _importedFileName;
-
-        public FileSystemImportProviderFacts()
-        {
-            _options = new ParserOptions();
-            _sut = new FileSystemImportProvider();
-            _options.ImportProviders.Add(_sut);
-            _importedFileName = "Files/Import.graphql";
-        }
-
-        [Fact]
-        public void Can_Import()
-        {
-            /* Given */
-            var path = _importedFileName;
-
-            /* When */
-            /* Then */
-            Assert.True(_sut.CanImport(path, null));
-        }
-
-        [Fact]
-        public async Task Import()
-        {
-            /* Given */
-            var path = _importedFileName;
-
-            /* When */
-            var typeDefs = await _sut.ImportAsync(path, null, _options);
-
-            /* Then */
-            Assert.NotNull(typeDefs.DirectiveDefinitions);
-            Assert.Single(
-                typeDefs.DirectiveDefinitions,
-                dt => dt.Name == "directive");
-        }
+        /* Given */
+        var path = _importedFileName;
+
+        /* When */
+        /* Then */
+        Assert.True(_sut.CanImport(path, null));
+    }
+
+    [Fact]
+    public async Task Import()
+    {
+        /* Given */
+        var path = _importedFileName;
+
+        /* When */
+        var typeDefs = await _sut.ImportAsync(path, null, _options);
+
+        /* Then */
+        Assert.NotNull(typeDefs.DirectiveDefinitions);
+        Assert.Single(
+            typeDefs.DirectiveDefinitions,
+            dt => dt.Name == "directive");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ParserFacts.cs b/tests/graphql.tests/ParserFacts.cs
deleted file mode 100644
index acbfcd412..000000000
--- a/tests/graphql.tests/ParserFacts.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using NSubstitute;
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests
-{
-    public class ParserFacts
-    {
-        [Fact]
-        public async Task Use_import_provider()
-        {
-            /* Given */
-            var provider = Substitute.For<IImportProvider>();
-            provider.CanImport(null, null).ReturnsForAnyArgs(true);
-            provider.ImportAsync(null, null, null).ReturnsForAnyArgs(
-                "type Imported"
-            );
-
-            var sdl = @"
-                """"""
-                tanka_import from ""./Imported""
-                """"""
-
-                type Query {
-                    field: Imported
-                }
-                ";
-
-
-            /* When */
-            var document = await Parser.ParseTypeSystemDocumentAsync(
-                sdl,
-                new ParserOptions
-                {
-                    ImportProviders = new List<IImportProvider>
-                    {
-                        provider
-                    }
-                });
-
-            /* Then */
-            Assert.NotNull(document.TypeDefinitions);
-            Assert.Single(
-                document.TypeDefinitions.OfType<ObjectDefinition>(),
-                objectTypeDef => objectTypeDef.Name == "Imported");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/SDL/GithubSchemaFacts.cs b/tests/graphql.tests/SDL/GithubSchemaFacts.cs
index 956722c7c..ea9483053 100644
--- a/tests/graphql.tests/SDL/GithubSchemaFacts.cs
+++ b/tests/graphql.tests/SDL/GithubSchemaFacts.cs
@@ -2,8 +2,8 @@
 using System.IO;
 using System.Reflection;
 using System.Text;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using System.Threading.Tasks;
+using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
 namespace Tanka.GraphQL.Tests.SDL
@@ -22,15 +22,15 @@ private static string GetGitHubSchema()
         }
 
         [Fact]
-        public void LoadSchema()
+        public async Task LoadSchema()
         {
             /* Given */
             var sdl = GetGitHubSchema();
 
             /* When */
-            var schema = new SchemaBuilder()
-                .Sdl(sdl)
-                .Build(false);
+            var schema = await new SchemaBuilder()
+                .Add(sdl)
+                .Build(new SchemaBuildOptions());
 
             /* Then */
             Assert.NotNull(schema);
diff --git a/tests/graphql.tests/SDL/SchemaPrinterFacts.cs b/tests/graphql.tests/SDL/SchemaPrinterFacts.cs
deleted file mode 100644
index ed40a3357..000000000
--- a/tests/graphql.tests/SDL/SchemaPrinterFacts.cs
+++ /dev/null
@@ -1,322 +0,0 @@
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.SDL
-{
-    public class SchemaPrinterFacts
-    {
-        [Theory]
-        [InlineData("Boolean", "true")]
-        [InlineData("Float", "123.123")]
-        [InlineData("ID", "\"111\"")]
-        [InlineData("Int", "123")]
-        [InlineData("String", "\"some text here.\"")]
-        public void Scalar_Standard_AsDefaultValue(string scalarType, string defaultValue)
-        {
-            /* Given */
-            var source = $"directive @ignore(arg1: {scalarType} = {defaultValue}) on SCALAR";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void DirectiveDefinition()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-directive @custom(arg1: Int = 123) on SCALAR";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void EnumType()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-enum Custom {
-    ONE
-    TWO
- }";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void InputObjectType()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-input Custom {
-    field1: Int!
-    field2: String! = ""test""
- }";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void InterfaceType()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-interface Custom {
-    field1: String!
-    field2: Int
-    field3: [Int!]!
-    field4(a: Int, b: Float): Float!
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact(Skip = "NotSupported")]
-        public void InterfaceType_Implements()
-        {
-            /* Given */
-            var source = @"
-interface Implemented {
-    field1: String!
-}
-
-""""""description""""""
-interface Custom implements Implemented {
-    field1: String!
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void ObjectType()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-type Custom {
-    field1: String!
-    field2: Int
-    field3: [Int!]!
-    field4(a: Int, b: Float): Float!
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void ObjectType_Implements()
-        {
-            /* Given */
-            var source = @"
-interface Implemented {
-    field1: String!
-}
-
-""""""description""""""
-type Custom implements Implemented {
-    field1: String!
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void Query()
-        {
-            /* Given */
-            var source = @"
-type Query {
-    field: Int!
-}
-
-
-schema {
-    query: Query
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void Query_and_mutation()
-        {
-            /* Given */
-            var source = @"
-type Query {
-    field: Int!
-}
-
-type Mutation {
-    field: Int!
-}
-
-schema {
-    query: Query
-    mutation: Mutation
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void Query_and_mutation_and_subscription()
-        {
-            /* Given */
-            var source = @"
-type Query {
-    field: Int!
-}
-
-type Mutation {
-    field: Int!
-}
-
-type Subscription {
-    field: Int!
-}
-
-schema {
-    query: Query
-    mutation: Mutation
-    subscription: Subscription
-}";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void ScalarType()
-        {
-            /* Given */
-            var source = @"
-""""""description""""""
-scalar Custom";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-
-        [Fact]
-        public void UnionType()
-        {
-            /* Given */
-            var source = @"
-type A
-type B
-
-""""""description""""""
-union Custom = A | B";
-            var schema = new SchemaBuilder()
-                .Sdl(source)
-                .Build(false);
-
-            /* When */
-            var actual = SchemaPrinter
-                .Print(new SchemaPrinterOptions(schema));
-
-            /* Then */
-            Gql.AssertEqual(source, Printer.Print(actual));
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/SDL/SdlFacts.cs b/tests/graphql.tests/SDL/SdlFacts.cs
deleted file mode 100644
index f11b91326..000000000
--- a/tests/graphql.tests/SDL/SdlFacts.cs
+++ /dev/null
@@ -1,688 +0,0 @@
-using System.Linq;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.SDL
-{
-    public class SdlFacts
-    {
-        [Fact]
-        public void Parse_custom_scalar()
-        {
-            /* Given */
-            var idl = @"
-                scalar Url
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var builder = new SchemaBuilder()
-                .Sdl(idl);
-
-
-            /* When */
-            builder.TryGetType<ScalarType>("Url", out var actual);
-
-            /* Then */
-            Assert.Equal("Url", actual.Name);
-        }
-
-        [Fact]
-        public void Parse_directives_on_input_object()
-        {
-            /* Given */
-            var sdl = @"
-                directive @map(from: String!, to: String!) on INPUT_OBJECT
-
-                input Input @map(from: ""from"", to: ""to"") {
-                }
-
-                type Query {
-                }
-                
-                schema {
-                    query: Query
-                }
-                ";
-
-            var schema = new SchemaBuilder()
-                .Sdl(sdl)
-                .Build();
-
-
-            /* When */
-            var directive = schema
-                .GetNamedType<InputObjectType>("Input")
-                .GetDirective("map");
-
-            /* Then */
-            Assert.NotNull(directive);
-        }
-
-        [Fact]
-        public void Parse_directives_on_object()
-        {
-            /* Given */
-            var sdl = @"
-                directive @map(from: String!, to: String!) on OBJECT
-
-                type Query @map(from: ""from"", to: ""to"") {
-                }
-                
-                schema {
-                    query: Query
-                }
-                ";
-
-            var schema = new SchemaBuilder()
-                .Sdl(sdl)
-                .Build();
-
-
-            /* When */
-            var directive = schema
-                .GetNamedType<ObjectType>("Query")
-                .GetDirective("map");
-
-            /* Then */
-            Assert.NotNull(directive);
-        }
-
-        [Fact]
-        public void Parse_directives_on_schema()
-        {
-            /* Given */
-            var sdl = @"
-                directive @map(from: String!, to: String!) on SCHEMA
-
-                type Query {
-                }
-
-                
-                schema @map(from: ""from"", to: ""to"") {
-                    query: Query
-                }
-                ";
-
-            var schema = new SchemaBuilder()
-                .Sdl(sdl)
-                .Build();
-
-
-            /* When */
-            var directive = schema.GetDirective("map");
-
-            /* Then */
-            Assert.NotNull(directive);
-        }
-
-        [Fact]
-        public void Parse_Document()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    name: String
-                    password: String
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-            var reader = new SchemaReader(document);
-
-            /* When */
-            var schema = reader.Read().Build();
-            var actual = schema.GetNamedType<ObjectType>("User");
-            var fields = schema.GetFields(actual.Name);
-
-            /* Then */
-            Assert.NotNull(actual);
-            Assert.Equal("User", actual.Name);
-            Assert.Contains(fields, kv => kv.Key == "name" && (ScalarType) kv.Value.Type == ScalarType.String);
-            Assert.Contains(fields,
-                kv => kv.Key == "password" && (ScalarType) kv.Value.Type == ScalarType.String);
-        }
-
-        [Fact]
-        public void Parse_Document_as_Schema()
-        {
-            /* Given */
-            var idl = @"
-                type Query {
-                }
-
-                type Mutation {
-                }
-
-                type Subscription {
-
-                }
-
-                schema {
-                  query: Query
-                  mutation: Mutation
-                  subscription: Subscription
-                }";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document)
-                .Build();
-
-            /* Then */
-            Assert.NotNull(actual);
-            Assert.NotNull(actual.Query);
-            Assert.NotNull(actual.Mutation);
-            Assert.NotNull(actual.Subscription);
-        }
-
-        [Fact]
-        public void Parse_Document_with_two_types()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    name: String
-                    password: String
-                }
-
-                type Role {
-                    name: String
-                    id: Int
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document)
-                .Build()
-                .QueryTypes<INamedType>();
-
-            /* Then */
-            Assert.Contains(actual, user => user.Name == "User");
-            Assert.Contains(actual, user => user.Name == "Role");
-        }
-
-        [Fact]
-        public void Parse_Document_with_types()
-        {
-            /* Given */
-            var idl = @"
-                scalar JediPowerLevel
-                scalar JediTrickLevel
-
-                enum Episode { NEWHOPE, EMPIRE, JEDI }
-
-                interface Character {
-                  id: String!
-                  name: String
-                  friends: [Character]
-                  appearsIn: [Episode]
-                }
-
-                type Human implements Character {
-                  id: String!
-                  name: String
-                  friends: [Character]
-                  appearsIn: [Episode]
-                  homePlanet: String
-                }
-
-                type Droid implements Character {
-                  id: String!
-                  name: String
-                  friends: [Character]
-                  appearsIn: [Episode]
-                  primaryFunction: String
-                }
-
-                input JediPowerInput {
-                    power: String
-                    level: JediPowerLevel
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var builder = new SchemaBuilder()
-                .Sdl(idl);
-
-            builder.TryGetType<ScalarType>("JediPowerLevel", out var jediPowerLevel);
-            builder.TryGetType<ScalarType>("JediTrickLevel", out var jediTrickLevel);
-
-            builder.Include("JediPowerLevel", new IntConverter())
-                .Include("JediTrickLevel", new IntConverter());
-
-            /* When */
-            var schema = builder.Build();
-            var actual = schema.QueryTypes<INamedType>();
-
-            /* Then */
-            Assert.Contains(actual, type => type.Name == "Episode" && type is EnumType);
-            Assert.Contains(actual, type => type.Name == "Character" && type is InterfaceType);
-            Assert.Contains(actual, type => type.Name == "Human" && type is ObjectType);
-            Assert.Contains(actual, type => type.Name == "Droid" && type is ObjectType);
-            Assert.Contains(actual, type => type.Name == "JediPowerInput" && type is InputObjectType);
-            Assert.Contains(actual, type => type.Name == "JediPowerLevel" && type.GetType() == typeof(ScalarType));
-            Assert.Contains(actual, type => type.Name == "JediTrickLevel" && type.GetType() == typeof(ScalarType));
-
-            var jediPowerInput = (InputObjectType) actual.Single(t => t.Name == "JediPowerInput");
-            var level = schema.GetInputField(jediPowerInput.Name, "level");
-            Assert.Equal(jediPowerLevel, level.Type);
-        }
-
-
-        [Fact]
-        public void Parse_EnumType()
-        {
-            /* Given */
-            var idl = @"
-                enum Episode {
-                  NEWHOPE
-                  EMPIRE
-                  JEDI
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-            var reader = new SchemaReader(document);
-
-            /* When */
-            var actual = reader.Read().Build().GetNamedType<EnumType>("Episode");
-
-            /* Then */
-            Assert.Equal("Episode", actual.Name);
-            Assert.Contains(actual.Values, kv => kv.Key == "NEWHOPE");
-            Assert.Contains(actual.Values, kv => kv.Key == "EMPIRE");
-            Assert.Contains(actual.Values, kv => kv.Key == "JEDI");
-        }
-
-        [Fact]
-        public void Parse_InterfaceType_with_object_field()
-        {
-            /* Given */
-            var idl = @"
-                interface Character {
-                    parent: Human
-                }
-
-                type Human implements Character { 
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document)
-                .Build();
-
-            /* Then */
-            var character = actual.GetNamedType<InterfaceType>("Character");
-            var human = actual.GetNamedType<ObjectType>("Human");
-            var characterFields = actual.GetFields(character.Name);
-
-            Assert.NotNull(character);
-            Assert.NotNull(human);
-            Assert.Equal("Character", character.Name);
-            Assert.Contains(characterFields,
-                field => field.Key == "parent" && (ObjectType) field.Value.Type == human);
-        }
-
-        [Fact]
-        public void Parse_InterfaceType_with_self_reference()
-        {
-            /* Given */
-            var idl = @"
-                interface Character {
-                    parent: Character
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document)
-                .Build();
-
-            /* Then */
-            var character = schema.GetNamedType<InterfaceType>("Character");
-            var characterFields = schema.GetFields(character.Name);
-
-            Assert.NotNull(character);
-            Assert.Equal("Character", character.Name);
-            Assert.Contains(characterFields,
-                field => field.Key == "parent" &&
-                         (InterfaceType) field.Value.Type == character);
-        }
-
-        [Fact]
-        public void Parse_ObjectType_implementing_interface()
-        {
-            /* Given */
-            var idl = @"
-                interface Character {
-
-                }
-
-                type Human implements Character {
-
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document)
-                .Build();
-
-            /* Then */
-            var human = actual.GetNamedType<ObjectType>("Human");
-
-            Assert.NotNull(human);
-            Assert.Equal("Human", human.Name);
-            Assert.Contains(human.Interfaces, type => type.Name == "Character");
-        }
-
-        [Fact]
-        public void Parse_ObjectType_with_extension()
-        {
-            /* Given */
-            var idl = @"
-                extend type Human {
-                    second: Boolean
-                }
-
-                type Human {
-                    first: Int
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document).Build();
-
-            /* Then */
-            var human = actual.GetNamedType<ObjectType>("Human");
-            var humanFields = actual.GetFields(human.Name);
-
-            Assert.NotNull(human);
-            Assert.Equal("Human", human.Name);
-            Assert.Single(humanFields, f => f.Key == "first");
-            Assert.Single(humanFields, f => f.Key == "second");
-        }
-
-
-        [Fact]
-        public void Parse_ObjectType_with_field_with_arguments()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    scopes(includeIdentity:Boolean!): [String!]!
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document).Build();
-            var actual = schema.GetNamedType<ObjectType>("User");
-            var actualFields = schema.GetFields("User");
-
-            /* Then */
-            Assert.Equal("User", actual.Name);
-
-            var scopesField = actualFields.SingleOrDefault();
-            Assert.Equal("scopes", scopesField.Key);
-            Assert.Contains(scopesField.Value.Arguments,
-                a => a.Key == "includeIdentity" && (ScalarType) a.Value.Type.Unwrap() == ScalarType.Boolean);
-        }
-
-        [Fact]
-        public void Parse_ObjectType_with_inteface_field()
-        {
-            /* Given */
-            var idl = @"
-                interface Character {
-
-                }
-
-                type Human implements Character {
-                    parent: Character
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document).Build();
-
-            /* Then */
-            var character = actual.GetNamedType<InterfaceType>("Character");
-            var human = actual.GetNamedType<ObjectType>("Human");
-            var humanFields = actual.GetFields(human.Name);
-
-            Assert.NotNull(character);
-            Assert.NotNull(human);
-            Assert.Equal("Human", human.Name);
-            Assert.Contains(humanFields,
-                field => field.Key == "parent" && (InterfaceType) field.Value.Type == character);
-        }
-
-        [Fact]
-        public void Parse_ObjectType_with_self_reference()
-        {
-            /* Given */
-            var idl = @"
-                type Human {
-                    parent: Human
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var actual = new SchemaBuilder().Sdl(document).Build();
-
-            /* Then */
-            var human = actual.GetNamedType<ObjectType>("Human");
-            var humanFields = actual.GetFields(human.Name);
-
-            Assert.NotNull(human);
-            Assert.Equal("Human", human.Name);
-            Assert.Contains(humanFields,
-                field => field.Key == "parent" &&
-                         (ObjectType) field.Value.Type == human);
-        }
-
-        [Fact]
-        public void Parse_simple_InterfaceType()
-        {
-            /* Given */
-            var idl = @"
-                interface Person {
-                    name: String
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document).Build();
-            var actual = schema.GetNamedType<InterfaceType>("Person");
-            var actualFields = schema.GetFields(actual.Name);
-
-            /* Then */
-            Assert.Equal("Person", actual.Name);
-            Assert.Contains(actualFields, kv => kv.Key == "name" && (ScalarType) kv.Value.Type == ScalarType.String);
-        }
-
-        [Fact]
-        public void Parse_simple_ObjectType()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    name: String
-                    password: String
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document).Build();
-            var actual = schema.GetNamedType<ObjectType>("User");
-            var actualFields = schema.GetFields(actual.Name);
-
-            /* Then */
-            Assert.Equal("User", actual.Name);
-            Assert.Contains(actualFields, kv => kv.Key == "name" && (ScalarType) kv.Value.Type == ScalarType.String);
-            Assert.Contains(actualFields,
-                kv => kv.Key == "password" && (ScalarType) kv.Value.Type == ScalarType.String);
-        }
-
-        [Fact]
-        public void Parse_simple_ObjectType_with_list()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    names: [String]
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document).Build();
-            var actual = schema.GetNamedType<ObjectType>("User");
-            var actualFields = schema.GetFields(actual.Name);
-
-            /* Then */
-            Assert.Equal("User", actual.Name);
-            Assert.Contains(actualFields,
-                kv => kv.Key == "names" && (List) kv.Value.Type == new List(ScalarType.String));
-        }
-
-        [Fact]
-        public void Parse_simple_ObjectType_with_non_null()
-        {
-            /* Given */
-            var idl = @"
-                type User {
-                    name: String!
-                }
-
-                type Query {
-                }
-                schema {
-                    query: Query
-                }
-                ";
-
-            var document = Parser.ParseTypeSystemDocument(idl);
-
-            /* When */
-            var schema = new SchemaBuilder().Sdl(document).Build();
-            var actual = schema.GetNamedType<ObjectType>("User");
-            var actualFields = schema.GetFields(actual.Name);
-
-            /* Then */
-            Assert.Equal("User", actual.Name);
-            Assert.Contains(actualFields,
-                kv => kv.Key == "name" && (NonNull) kv.Value.Type == new NonNull(ScalarType.String));
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/Tools/MakeExecutableWithIntrospectionFacts.cs b/tests/graphql.tests/Tools/MakeExecutableWithIntrospectionFacts.cs
deleted file mode 100644
index 542ab3502..000000000
--- a/tests/graphql.tests/Tools/MakeExecutableWithIntrospectionFacts.cs
+++ /dev/null
@@ -1,56 +0,0 @@
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.Tools
-{
-    public class MakeExecutableWithIntrospectionFacts
-    {
-        [Fact]
-        public async Task WithCustomScalar()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            await builder.SdlAsync(@"
-                    scalar Date
-
-                    input InputTest {
-                        timestamp: Date
-                    }
-
-                    type Query {
-                        getDate(date: Date): String 
-                    }
-
-                    type Mutation {
-                        addDate(date: Date, inputTest: InputTest): String
-                    }
-
-                    schema {
-                        query: Query
-                        mutation: Mutation
-                        subscription: Subscription
-                    }");
-               
-
-            /* When */
-            var schema = SchemaTools.MakeExecutableSchemaWithIntrospection(
-                builder,
-                converters: new Dictionary<string, IValueConverter>()
-                {
-                    ["Date"] = new StringConverter()
-                });
-
-            /* Then */
-            var date = schema.GetNamedType("Date");
-
-            Assert.NotNull(date);
-            Assert.IsType<ScalarType>(date);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/Tools/MergeSchemasFacts.cs b/tests/graphql.tests/Tools/MergeSchemasFacts.cs
deleted file mode 100644
index 29c533655..000000000
--- a/tests/graphql.tests/Tools/MergeSchemasFacts.cs
+++ /dev/null
@@ -1,205 +0,0 @@
-using System.Linq;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.Tools
-{
-    public class MergeSchemasFacts
-    {
-        [Fact]
-        public void Should_include_fields_if_no_conflict()
-        {
-            /* Given */
-            var left = new SchemaBuilder()
-                .Query(out var leftQuery)
-                .Connections(connect => connect
-                    .Field(leftQuery, "left", ScalarType.Int));
-
-            var right = new SchemaBuilder()
-                .Query(out var rightQuery)
-                .Connections(connect => connect
-                    .Field(rightQuery, "right", ScalarType.String))
-                .Build();
-
-
-            /* When */
-            var mergedSchema = left.Merge(right).Build();
-            var queryFields = mergedSchema.GetFields(mergedSchema.Query.Name)
-                .ToList();
-
-            /* Then */
-            Assert.Single(queryFields, pair => pair.Key == "left");
-            Assert.Single(queryFields, pair => pair.Key == "right");
-        }
-
-        [Fact]
-        public void Merge_schemas()
-        {
-            /* Given */
-            var schemaOne = new SchemaBuilder()
-                .Sdl(@"
-                    input RightInput {
-                        rightField: String!
-                    }
-
-                    type RightTwo {
-                        rightField(input: RightInput): Int!
-                    }
-
-                    type Query {
-                        rightField: RightTwo
-                    }
-
-                    schema {
-                        query: Query
-                    }
-                    ")
-                .Build();
-
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                    type Query {
-                        leftField: Int!
-                    }
-
-                    schema {
-                        query: Query
-                    }
-                    ");
-
-            
-            /* When */
-            var schema = builder.Merge(schemaOne)
-                .Build();
-
-            /* Then */
-            var rightInput = schema.GetNamedType<InputObjectType>("RightInput");
-            Assert.NotNull(rightInput);
-        }
-
-        [Fact]
-        public void Merge_schema_with_new_enum()
-        {
-            /* Given */
-            var newTypes = new SchemaBuilder()
-                .Sdl(@"
-                    enum COLOR {
-                        RED
-                        BLUE
-                        GREEN
-                        }
-
-                    type Query {
-                        currentColor: COLOR
-                    }     
-                    ")
-                .Build();
-
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                    type Query {
-                        name: String!
-                    }
-
-                    schema {
-                        query: Query
-                    }
-                    ");
-
-            
-            /* When */
-            var schema = builder.Merge(newTypes)
-                .Build();
-
-            /* Then */
-            var newEnumType = schema.GetNamedType<EnumType>("COLOR");
-            Assert.NotNull(newEnumType);
-
-            var field = schema.GetField("Query", "currentColor");
-            Assert.Equal(newEnumType, field.Type);
-        }
-
-        [Fact]
-        public void Merge_schema_with_new_union()
-        {
-            /* Given */
-            var newTypes = new SchemaBuilder()
-                .Sdl(@"
-type Red {
-}
-
-type Green {
-}
-
-type Orange {
-}
-
-union Color = Red | Orange | Green
-
-type Query {
-    color: Color
-}
-                    ")
-                .Build();
-
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                    type Query {
-                    }
-                    ");
-
-            
-            /* When */
-            var schema = builder.Merge(newTypes)
-                .Build();
-
-            /* Then */
-            var newUnionType = schema.GetNamedType<UnionType>("Color");
-            Assert.NotNull(newUnionType);
-
-            var field = schema.GetField("Query", "color");
-            Assert.Equal(newUnionType, field.Type);
-        }
-
-        [Fact]
-        public void Merge_schema_with_new_CustomScalar()
-        {
-            /* Given */
-            var newTypes = new SchemaBuilder()
-                .Sdl(@"
-                    scalar Date
-
-                    input InputTest {
-                        timestamp: Date
-                    }   
-
-                    type Query {
-                        useRaw(date: Date!): Int
-                        useWithInput(inputWithDate: InputTest!): Int
-                    }
-                    ")
-                .Include("Date", new StringConverter())
-                .Build();
-
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                    schema {
-                        query: Query
-                    }
-                    ");
-
-
-            /* When */
-            var schema = builder.Merge(newTypes)
-                .Build();
-
-            /* Then */
-            var newScalarType = schema.GetNamedType<ScalarType>("Date");
-            Assert.NotNull(newScalarType);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/BooleanTypeFacts.cs b/tests/graphql.tests/TypeSystem/BooleanTypeFacts.cs
deleted file mode 100644
index c2a3f03ef..000000000
--- a/tests/graphql.tests/TypeSystem/BooleanTypeFacts.cs
+++ /dev/null
@@ -1,86 +0,0 @@
-
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class BooleanTypeFacts
-    {
-        private readonly IValueConverter _sut;
-
-        public BooleanTypeFacts()
-        {
-            _sut = new BooleanConverter();
-        }
-
-        [Theory]
-        [InlineData(true, true)]
-        [InlineData(false, false)]
-        [InlineData("True", true)]
-        [InlineData("False", false)]
-        [InlineData(1, true)]
-        [InlineData(0, false)]
-        public void ParseValue(object input, bool expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.ParseValue(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        //[InlineData("True", true)]
-        [InlineData("true", true)]
-        //[InlineData("False", false)]
-        [InlineData("false", false)]
-        //[InlineData("1", true)]
-        //[InlineData("0", false)]
-        public void ParseLiteral(string input, bool expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory(Skip = "Coercion not allowed")]
-        [InlineData("1", true)]
-        [InlineData("0", false)]
-        public void ParseIntLiteral(string input, bool expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData(true, true)]
-        [InlineData(false, false)]
-        [InlineData(1, true)]
-        [InlineData(0, false)]
-        [InlineData("1", true)]
-        [InlineData("0", false)]
-        public void Serialize(object input, bool expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.Serialize(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/DirectiveInstanceFacts.cs b/tests/graphql.tests/TypeSystem/DirectiveInstanceFacts.cs
deleted file mode 100644
index 032a8c33b..000000000
--- a/tests/graphql.tests/TypeSystem/DirectiveInstanceFacts.cs
+++ /dev/null
@@ -1,66 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class DirectiveInstanceFacts
-    {
-        [Fact]
-        public void Create()
-        {
-            /* Given */
-            var arg = "Deprecated for a good reason";
-            var directiveType = DirectiveType.Deprecated;
-
-            /* When */
-            var directive = directiveType.CreateInstance(new Dictionary<string, object>()
-            {
-                ["reason"] = arg
-            });
-
-            /* Then */
-            var reason = directive.GetArgument<string>("reason");
-            Assert.Equal(arg, reason);
-        }
-
-
-        [Fact]
-        public void Can_have_directives()
-        {
-            /* public static IEnumerable<DirectiveLocation> TypeSystemLocations = new[]
-            {
-                DirectiveLocation.SCHEMA,
-                DirectiveLocation.SCALAR,
-                DirectiveLocation.OBJECT,
-                DirectiveLocation.FIELD_DEFINITION,
-                DirectiveLocation.ARGUMENT_DEFINITION,
-                DirectiveLocation.INTERFACE,
-                DirectiveLocation.UNION,
-                DirectiveLocation.ENUM,
-                DirectiveLocation.ENUM_VALUE,
-                DirectiveLocation.INPUT_OBJECT,
-                DirectiveLocation.INPUT_FIELD_DEFINITION
-            };*/
-
-            var typeSystemTypes = new[]
-            {
-                typeof(ISchema),
-                typeof(ScalarType),
-                typeof(ObjectType),
-                typeof(IField),
-                typeof(Argument),
-                typeof(InterfaceType),
-                typeof(UnionType),
-                typeof(EnumType),
-                typeof(EnumValue),
-                typeof(InputObjectType),
-                typeof(InputObjectField)
-            };
-
-            foreach (var canHaveDirectives in typeSystemTypes)
-                Assert.True(typeof(IHasDirectives).IsAssignableFrom(canHaveDirectives),
-                    $"{canHaveDirectives} does not implement IHasDirectives");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/DirectiveTypeFacts.cs b/tests/graphql.tests/TypeSystem/DirectiveTypeFacts.cs
deleted file mode 100644
index 314689008..000000000
--- a/tests/graphql.tests/TypeSystem/DirectiveTypeFacts.cs
+++ /dev/null
@@ -1,223 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Security.Claims;
-using System.Threading.Tasks;
-using Tanka.GraphQL.Directives;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class DirectiveTypeFacts
-    {
-        public static CreateDirectiveVisitor AuthorizeVisitor(Func<int, ClaimsPrincipal> fetchUser)
-        {
-            return builder => new DirectiveVisitor
-            {
-                FieldDefinition = (directive, fieldDefinition) =>
-                {
-                    return fieldDefinition.WithResolver(resolver => resolver.Use((context, next) =>
-                    {
-                        var requiredRole = directive.GetArgument<string>("role");
-                        var user = fetchUser(42);
-                        
-                        if (!user.HasClaim("role", requiredRole))
-                            throw new Exception(
-                                "requires admin role. "
-                            );
-
-                        return next(context);
-                    }).Run(fieldDefinition.Resolver));
-                }
-            };
-        }
-
-        [Fact]
-        public async Task Authorize_field_directive()
-        {
-            /* Given */
-            var authorizeType = new DirectiveType(
-                "authorize",
-                new[]
-                {
-                    DirectiveLocation.FIELD_DEFINITION
-                },
-                new Args
-                {
-                    {"role", ScalarType.NonNullString, "user", "Required role"}
-                });
-
-            var builder = new SchemaBuilder();
-            builder.Include(authorizeType);
-
-            builder.Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "requiresAdmin", ScalarType.String,
-                        directives: new[]
-                        {
-                            authorizeType.CreateInstance(new Dictionary<string, object>
-                            {
-                                // this will override the default value of the DirectiveType
-                                ["role"] = "admin"
-                            })
-                        })
-                    .Field(query, "requiresUser", ScalarType.String,
-                        directives: new[]
-                        {
-                            // this will use defaultValue from DirectiveType
-                            authorizeType.CreateInstance()
-                        }));
-
-            var resolvers = new ObjectTypeMap
-            {
-                {
-                    query.Name, new FieldResolversMap
-                    {
-                        {"requiresAdmin", context => new ValueTask<IResolverResult>(Resolve.As("Hello Admin!"))},
-                        {"requiresUser", context => new ValueTask<IResolverResult>(Resolve.As("Hello User!"))}
-                    }
-                }
-            };
-
-            // mock user and user store
-            var user = new ClaimsPrincipal(new ClaimsIdentity(new []
-            {
-                new Claim("role", "user"),
-            }));
-
-            ClaimsPrincipal FetchUser(int id) => user;
-
-            /* When */
-            var schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                resolvers,
-                directives: new Dictionary<string, CreateDirectiveVisitor>
-                {
-                    // register directive visitor to be used when authorizeType.Name present
-                    [authorizeType.Name] = AuthorizeVisitor(FetchUser)
-                });
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Document = Parser.ParseDocument(@"{ requiresAdmin requiresUser }"),
-                Schema = schema
-            });
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"
-                  {
-                  ""data"": {
-                    ""requiresAdmin"": null,
-                    ""requiresUser"": ""Hello User!""
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""requires admin role. "",
-                      ""locations"": [
-                        {
-                          ""line"": 1,
-                          ""column"": 3
-                        }
-                      ],
-                      ""path"": [
-                        ""requiresAdmin""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""EXCEPTION""
-                      }
-                    }
-                  ]
-                }
-                ");
-        }
-
-        [Fact]
-        public async Task Authorize_field_directive_sdl()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Sdl(Parser.ParseTypeSystemDocument(@"
-                directive @authorize(
-                    role: String =""user""
-                ) on FIELD_DEFINITION
-
-                type Query {
-                    requiresAdmin: String @authorize(role:""admin"")
-                    requiresUser: String @authorize
-                }
-
-                schema {
-                    query: Query
-                }
-                "));
-
-            var resolvers = new ObjectTypeMap
-            {
-                {
-                    "Query", new FieldResolversMap
-                    {
-                        {"requiresAdmin", context => new ValueTask<IResolverResult>(Resolve.As("Hello Admin!"))},
-                        {"requiresUser", context => new ValueTask<IResolverResult>(Resolve.As("Hello User!"))}
-                    }
-                }
-            };
-
-            // mock user and user store
-            var user = new ClaimsPrincipal(new ClaimsIdentity(new []
-            {
-                new Claim("role", "user"),
-            }));
-
-            ClaimsPrincipal FetchUser(int id) => user;
-
-            /* When */
-            var schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                resolvers,
-                directives: new Dictionary<string, CreateDirectiveVisitor>
-                {
-                    // register directive visitor to be used when authorizeType.Name present
-                    ["authorize"] = AuthorizeVisitor(FetchUser)
-                });
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Document = Parser.ParseDocument(@"{ requiresAdmin requiresUser }"),
-                Schema = schema
-            });
-
-            /* Then */
-            result.ShouldMatchJson(@"
-                  {
-                  ""data"": {
-                    ""requiresAdmin"": null,
-                    ""requiresUser"": ""Hello User!""
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""requires admin role. "",
-                      ""locations"": [
-                        {
-                          ""line"": 1,
-                          ""column"": 3
-                        }
-                      ],
-                      ""path"": [
-                        ""requiresAdmin""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""EXCEPTION""
-                      }
-                    }
-                  ]
-                }
-                ");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/EnumTypeFacts.cs b/tests/graphql.tests/TypeSystem/EnumTypeFacts.cs
deleted file mode 100644
index 10edb9c96..000000000
--- a/tests/graphql.tests/TypeSystem/EnumTypeFacts.cs
+++ /dev/null
@@ -1,97 +0,0 @@
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class EnumTypeFacts
-    {
-        [Theory]
-        [InlineData("success", "SUCCESS")]
-        [InlineData("FAILURE", "FAILURE")]
-        [InlineData("Inconclusive", "INCONCLUSIVE")]
-        public void ParseValue(object input, string expected)
-        {
-            /* Given */
-            var Enum = new EnumType("TestResult", new EnumValues
-            {
-                ["SUCCESS"] = null,
-                ["FAILURE"] = null,
-                ["INCONCLUSIVE"] = null
-            });
-
-            /* When */
-            var actual = Enum.ParseValue(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("success", "SUCCESS")]
-        [InlineData("FAILURE", "FAILURE")]
-        [InlineData("Inconclusive", "INCONCLUSIVE")]
-        public void Serialize(object input, string expected)
-        {
-            /* Given */
-            var Enum = new EnumType("TestResult", new EnumValues
-            {
-                ["SUCCESS"] = null,
-                ["FAILURE"] = null,
-                ["INCONCLUSIVE"] = null
-            });
-
-            /* When */
-            var actual = Enum.Serialize(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("success", "SUCCESS")]
-        [InlineData("FAILURE", "FAILURE")]
-        [InlineData("Inconclusive", "INCONCLUSIVE")]
-        public void ParseLiteral(string input, string expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            var Enum = new EnumType("TestResult", new EnumValues
-            {
-                ["SUCCESS"] = null,
-                ["FAILURE"] = null,
-                ["INCONCLUSIVE"] = null
-            });
-
-            /* When */
-            var actual = Enum.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public void Define_enum()
-        {
-            /* Given */
-            /* When */
-            var Enum = new EnumType(
-                "Direction",
-                new EnumValues
-                {
-                    "NORTH",
-                    "EAST",
-                    "SOUTH",
-                    "WEST"
-                });
-
-            /* Then */
-            Assert.True(Enum.Contains("NORTH"));
-            Assert.True(Enum.Contains("EAST"));
-            Assert.True(Enum.Contains("SOUTH"));
-            Assert.True(Enum.Contains("WEST"));
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/FloatTypeFacts.cs b/tests/graphql.tests/TypeSystem/FloatTypeFacts.cs
deleted file mode 100644
index cb4c5e47e..000000000
--- a/tests/graphql.tests/TypeSystem/FloatTypeFacts.cs
+++ /dev/null
@@ -1,77 +0,0 @@
-
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class FloatTypeFacts
-    {
-        private readonly IValueConverter _sut;
-
-        public FloatTypeFacts()
-        {
-            _sut = new DoubleConverter();
-        }
-
-        [Theory]
-        [InlineData(123, 123)]
-        [InlineData(123.123, 123.123)]
-        [InlineData("123", 123)]
-        [InlineData("123.123", 123.123)]
-        public void ParseValue(object input, double expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.ParseValue(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("123", 123)]
-        [InlineData("123.123", 123.123)]
-        public void ParseLiteral(string input, double expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("123", 123)]
-        public void ParseIntLiteral(string input, double expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData(123, 123)]
-        [InlineData(123.123, 123.123)]
-        [InlineData("123", 123)]
-        [InlineData("123.123", 123.123)]
-        public void Serialize(object input, double expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.Serialize(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/Gql.cs b/tests/graphql.tests/TypeSystem/Gql.cs
deleted file mode 100644
index 6f61d7673..000000000
--- a/tests/graphql.tests/TypeSystem/Gql.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-using System.Text.RegularExpressions;
-using Xunit;
-
-public static class Gql
-{
-    public static void AssertEqual(string expected, string actual)
-    {
-        string Normalize(string str)
-        {
-            str = str
-                .Replace("\r", string.Empty)
-                .Replace("\n", " ")
-                .Trim();
-
-            return Regex.Replace(str, @"\s+", " ");
-        }
-
-        Assert.Equal(
-            Normalize(expected),
-            Normalize(actual),
-            false,
-            true,
-            true
-        );
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/InputObjectTypeFacts.cs b/tests/graphql.tests/TypeSystem/InputObjectTypeFacts.cs
deleted file mode 100644
index 281d5f3ab..000000000
--- a/tests/graphql.tests/TypeSystem/InputObjectTypeFacts.cs
+++ /dev/null
@@ -1,69 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class InputObjectTypeFacts
-    {
-        public InputObjectTypeFacts()
-        {
-            _builder = new SchemaBuilder();
-            _builder.Query(out _);
-        }
-
-        private readonly SchemaBuilder _builder;
-
-        [Fact]
-        public void Define()
-        {
-            /* Given */
-            /* When */
-            _builder.InputObject("ExampleInputObject", out var input)
-                .Connections(connect => connect
-                    .InputField(input, "a", ScalarType.Boolean));
-
-            var schema = _builder.Build();
-
-            /* Then */
-            var inputFields = schema.GetInputFields(input.Name);
-            Assert.Single(inputFields,
-                fk => fk.Key == "a"
-                      && (ScalarType) fk.Value.Type == ScalarType.Boolean);
-        }
-
-        [Fact]
-        public void Input_coercion()
-        {
-            /* Given */
-            _builder.InputObject("ExampleInputObject", out var input)
-                .Connections(connect => connect
-                    .InputField(input, "a", ScalarType.String)
-                    .InputField(input, "b", ScalarType.Int));
-
-            var schema = _builder.Build();
-
-            /* When */
-            var literalValue = new Dictionary<string, object>
-            {
-                ["a"] = "abc",
-                ["b"] = 123
-            };
-
-            var actual = (Dictionary<string, object>) Values.CoerceValue(
-                    schema.GetInputFields, 
-                    schema.GetValueConverter,
-                    literalValue, 
-                    input);
-
-            /* Then */
-            foreach (var expectedKv in literalValue)
-            {
-                Assert.True(actual.ContainsKey(expectedKv.Key));
-                Assert.Equal(expectedKv.Value, actual[expectedKv.Key]);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/IntTypeFacts.cs b/tests/graphql.tests/TypeSystem/IntTypeFacts.cs
deleted file mode 100644
index b26ea62c9..000000000
--- a/tests/graphql.tests/TypeSystem/IntTypeFacts.cs
+++ /dev/null
@@ -1,59 +0,0 @@
-
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class IntTypeFacts
-    {
-        private readonly IValueConverter _sut;
-
-        public IntTypeFacts()
-        {
-            _sut = new IntConverter();
-        }
-
-        [Theory]
-        [InlineData(123, 123)]
-        [InlineData("123", 123)]
-        public void ParseValue(object input, int expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.ParseValue(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("123", 123)]
-        public void ParseLiteral(string input, int expected)
-        {
-            /* Given */
-            ValueBase astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-
-        [Theory]
-        [InlineData(123, 123)]
-        [InlineData("123", 123)]
-        public void Serialize(object input, int expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.Serialize(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/InterfaceTypeFacts.cs b/tests/graphql.tests/TypeSystem/InterfaceTypeFacts.cs
deleted file mode 100644
index 0927bb35f..000000000
--- a/tests/graphql.tests/TypeSystem/InterfaceTypeFacts.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class InterfaceTypeFacts
-    {
-        private SchemaBuilder _builder;
-
-        public InterfaceTypeFacts()
-        {
-            _builder = new SchemaBuilder();
-            _builder.Query(out _);
-        }
-
-        [Fact]
-        public void Define_interface()
-        {
-            /* Given */
-            /* When */
-            _builder.Interface("NamedEntity", out var namedEntity)
-                .Connections(connect => connect
-                .Field(namedEntity, "name", ScalarType.NonNullString));
-
-            var schema = _builder.Build();
-
-            /* Then */
-            var namedEntityFields = schema.GetFields(namedEntity.Name);
-            Assert.Equal("NamedEntity", namedEntity.Name);
-            Assert.Single(namedEntityFields, fk => fk.Key == "name"
-                                                    && (NonNull) fk.Value.Type == ScalarType.NonNullString);
-        }
-
-        [Fact]
-        public void Implement_interface()
-        {
-            /* Given */
-            _builder.Interface("NamedEntity", out var namedEntity)
-                .Connections(connect => connect
-                .Field(namedEntity, "name", ScalarType.NonNullString));
-
-            _builder.Object("Person", out var person, interfaces: new []{namedEntity})
-                .Connections(connect => connect
-                .Field(person, "name", ScalarType.NonNullString));
-
-            /* When */
-            //todo: interfaces should be behind a connection
-            var implements = person.Implements(namedEntity);
-
-            /* Then */
-            Assert.True(implements);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/ListFacts.cs b/tests/graphql.tests/TypeSystem/ListFacts.cs
deleted file mode 100644
index 28307ca5b..000000000
--- a/tests/graphql.tests/TypeSystem/ListFacts.cs
+++ /dev/null
@@ -1,269 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class ListFacts
-    {
-        private IEnumerable<KeyValuePair<string, InputObjectField>> GetInputObjectFields(string type)
-        {
-            return null;
-        }
-
-        private IValueConverter GetValueConverter(string type)
-        {
-            return ScalarType.Standard.Single(c => c.Type.Name == type).Converter;
-        }
-
-        [Fact]
-        public void Coerce_ListOfInts()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new List(itemType);
-            var values = new object[] {1, 2, 3};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_null_list()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new List(itemType);
-            object values = null;
-
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            Assert.Null(coercedRawResult);
-        }
-
-        [Fact]
-        public void Coerce_ListOfInts_with_null_item()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new List(itemType);
-            var values = new object[] {1, 2, null};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOfInts()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new NonNull(new List(itemType));
-            var values = new object[] {1, 2, 3};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOfInts_as_null()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new NonNull(new List(itemType));
-            object values = null;
-            
-            /* When */
-            /* Then */
-            Assert.Throws<ValueCoercionException>(()=>Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType));
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOfInts_with_null_item()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-            var listType = new NonNull(new List(itemType));
-            var values = new object[] {1, 2, null};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_ListOf_NonNullInts()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new List(itemType);
-            var values = new object[] {1, 2, 3};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_ListOf_NonNullInts_with_null_list()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new List(itemType);
-            object values = null;
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            Assert.Null(coercedRawResult);
-        }
-
-        [Fact]
-        public void Coerce_ListOf_NonNullInts_with_null_item()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new List(itemType);
-            var values = new object[] {1, 2, null};
-            
-            /* When */
-            /* Then */
-            Assert.Throws<ValueCoercionException>(()=>Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType));
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOf_NonNullInts()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new NonNull(new List(itemType));
-            var values = new object[] {1, 2, 3};
-            
-            /* When */
-            var coercedRawResult = Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType);
-
-
-            /* Then */
-            var coercedResult = Assert.IsAssignableFrom<IEnumerable<object>>(coercedRawResult);
-            Assert.Equal(values, coercedResult);
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOf_NonNullInts_with_null()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new NonNull(new List(itemType));
-            object values = null;
-            
-            /* When */
-            /* Then */
-            Assert.Throws<ValueCoercionException>(()=>Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType));
-        }
-
-        [Fact]
-        public void Coerce_NonNull_ListOf_NonNullInts_with_null_item()
-        {
-            /* Given */
-            var itemType = ScalarType.NonNullInt;
-            var listType = new NonNull(new List(itemType));
-            object values = new object[] {1, 2, null};;
-            
-            /* When */
-            /* Then */
-            Assert.Throws<ValueCoercionException>(()=>Values.CoerceValue(
-                GetInputObjectFields,
-                GetValueConverter,
-                values,
-                listType));
-        }
-
-        [Fact]
-        public void Define_list()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-
-            /* When */
-            var list = new List(itemType);
-
-            /* Then */
-            Assert.Equal(itemType, list.OfType);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/NonNullFacts.cs b/tests/graphql.tests/TypeSystem/NonNullFacts.cs
deleted file mode 100644
index b2e77bf44..000000000
--- a/tests/graphql.tests/TypeSystem/NonNullFacts.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class NonNullFacts
-    {
-        [Fact]
-        public void Define_NonNull()
-        {
-            /* Given */
-            var itemType = ScalarType.Int;
-
-            /* When */
-            var nonNull = new NonNull(itemType);
-
-            /* Then */
-            Assert.Equal(itemType, nonNull.OfType);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/ObjectTypeFacts.cs b/tests/graphql.tests/TypeSystem/ObjectTypeFacts.cs
deleted file mode 100644
index 24a14ceb4..000000000
--- a/tests/graphql.tests/TypeSystem/ObjectTypeFacts.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class ObjectTypeFacts
-    {
-        public ObjectTypeFacts()
-        {
-            _builder = new SchemaBuilder();
-            _builder.Query(out _);
-        }
-
-        private readonly SchemaBuilder _builder;
-
-        [Fact]
-        public void With_scalar_field()
-        {
-            /* Given */
-            _builder.Object("Person", out var person)
-                .Connections(connect => connect
-                    .Field(person, "name", ScalarType.NonNullString));
-
-            var schema = _builder.Build();
-
-            /* When */
-            var name = schema.GetField(person.Name, "name");
-
-            /* Then */
-            Assert.Equal("Person", person.Name);
-            Assert.NotNull(name);
-            Assert.Equal(ScalarType.NonNullString, name.Type);
-        }
-
-        [Fact]
-        public void With_scalar_field_with_argument()
-        {
-            /* Given */
-            _builder.Object("Person", out var person)
-                .Connections(connect => connect
-                    .Field(person, "phoneNumber", ScalarType.NonNullString,
-                        args: args => args.Arg(
-                            "primary", 
-                            ScalarType.Boolean, 
-                            default, 
-                            default
-                            )
-                        )
-                );
-
-            var schema = _builder.Build();
-
-            /* When */
-            var phoneNumber = schema.GetField(person.Name, "phoneNumber");
-
-            /* Then */
-            Assert.NotNull(phoneNumber);
-            Assert.Equal(ScalarType.NonNullString, phoneNumber.Type);
-            Assert.Single(phoneNumber.Arguments,
-                arg => arg.Key == "primary" && (ScalarType) arg.Value.Type == ScalarType.Boolean);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/SchemaBuilderFacts.cs b/tests/graphql.tests/TypeSystem/SchemaBuilderFacts.cs
deleted file mode 100644
index 5ee0212da..000000000
--- a/tests/graphql.tests/TypeSystem/SchemaBuilderFacts.cs
+++ /dev/null
@@ -1,706 +0,0 @@
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Tanka.GraphQL.Validation;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-// ReSharper disable ArgumentsStyleOther
-// ReSharper disable ArgumentsStyleStringLiteral
-// ReSharper disable ArgumentsStyleNamedExpression
-// ReSharper disable ArgumentsStyleLiteral
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class SchemaBuilderFacts
-    {
-        [Fact]
-        public void Build()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                // query is required to build schema
-                .Query(out _);
-
-            /* When */
-            var schema = builder.Build();
-
-            /* Then */
-            Assert.IsAssignableFrom<ISchema>(schema);
-            Assert.IsType<SchemaGraph>(schema);
-            Assert.NotNull(schema.Query);
-        }
-
-        [Fact]
-        public void Build_and_validate_schema()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                // query is required to build schema
-                .Query(out _);
-
-            /* When */
-            var (schema, validationResult) = builder.BuildAndValidate();
-
-            /* Then */
-            Assert.True(validationResult.IsValid);
-            Assert.IsAssignableFrom<ISchema>(schema);
-            Assert.IsType<SchemaGraph>(schema);
-            Assert.NotNull(schema.Query);
-        }
-
-        [Fact]
-        public void Build_types()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-
-            builder.Object("Object1", out var object1);
-            builder.Query(out var query);
-
-            builder.Connections(connect => connect
-                .Field(object1, "field1", ScalarType.Float)
-                .Field(query, "field1", object1));
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            var types = sut.QueryTypes<INamedType>();
-
-            Assert.Contains(types, t => t.Name == "Query");
-            Assert.Contains(types, t => t.Name == "Object1");
-        }
-
-        [Fact]
-        public void Build_with_circular_reference_between_two_objects()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-
-            /* When */
-            var schema = builder
-                .Object("Object1", out var obj1)
-                .Object("Object2", out var obj2)
-                .Connections(connect => connect
-                    .Field(obj1, "obj1-obj2", obj2)
-                    .Field(obj2, "obj2-obj1", obj1)
-                    .Field(obj1, "scalar", ScalarType.Int))
-                .Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "query-obj1", obj1))
-                .Build();
-
-            /* Then */
-            var object1 = schema.GetNamedType<ObjectType>(obj1.Name);
-            var object1ToObject2 = schema.GetField(object1.Name, "obj1-obj2");
-
-            var object2 = schema.GetNamedType<ObjectType>(obj2.Name);
-            var object2ToObject1 = schema.GetField(object2.Name, "obj2-obj1");
-
-            Assert.Equal(object1, object2ToObject1.Type);
-            Assert.Equal(object2, object1ToObject2.Type);
-        }
-
-        [Fact]
-        public void Create_DirectiveType()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Deprecated";
-
-            /* When */
-            builder.DirectiveType(
-                name: name,
-                out var object1,
-                locations: new[]
-                {
-                    DirectiveLocation.FIELD
-                },
-                description: "Description",
-                args => args.Arg(
-                    name: "Reason",
-                    type: ScalarType.String,
-                    defaultValue: "Deprecated",
-                    description: "Description")
-            );
-
-            /* Then */
-            Assert.Equal(name, object1.Name);
-        }
-
-        [Fact]
-        public void Create_Enum()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Enum1";
-
-            /* When */
-            builder.Enum(
-                name: name,
-                enumType: out var enum1,
-                description: "Description",
-                values =>
-                    values.Value(
-                        value: "VALUE1",
-                        description: "Description",
-                        directives: new DirectiveInstance[]
-                        {
-                            /*directive*/
-                        },
-                        deprecationReason: null),
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                }
-            );
-
-            /* Then */
-            Assert.Equal(name, enum1.Name);
-            Assert.True(builder.TryGetType<EnumType>(enum1.Name, out _));
-        }
-
-        [Fact]
-        public async Task Create_Field_Resolver()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Query(out var query)
-                .Connections(connections =>
-                {
-                    connections.Field(query, "field1", ScalarType.String,
-                        "test field",
-                        resolve => resolve.Run(context => new ValueTask<IResolverResult>(Resolve.As(42))));
-                });
-
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            var result = await sut.GetResolver(query.Name, "field1")(null);
-            Assert.Equal(42, result.Value);
-        }
-
-        [Fact]
-        public async Task Create_Field_Subscriber()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Query(out var query)
-                .Connections(connections =>
-                {
-                    connections.Field(query, "field1", ScalarType.String,
-                        "test field",
-                        resolve => resolve.Run(context =>
-                            ResolveSync.As(42)),
-                        subscribe => subscribe.Run((context, unsubscribe) =>
-                            ResolveSync.Subscribe(new EventChannel<object>(), unsubscribe)));
-                });
-
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            var result = await sut.GetSubscriber(query.Name, "field1")(null, CancellationToken.None);
-            Assert.NotNull(result.Reader);
-        }
-
-        [Fact]
-        public void Create_InputObject()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "InputObject1";
-
-            /* When */
-            builder.InputObject(
-                name: name,
-                out var object1,
-                description: "Description",
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                });
-
-            /* Then */
-            Assert.Equal(name, object1.Name);
-            Assert.True(builder.TryGetType<InputObjectType>(object1.Name, out _));
-        }
-
-        [Fact]
-        public void Create_InputObject_field()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.InputObject(
-                name: "Input1",
-                out var input1);
-
-            /* When */
-            builder.Connections(connect => connect
-                .InputField(
-                    owner: input1,
-                    fieldName: "field1",
-                    to: ScalarType.NonNullBoolean,
-                    defaultValue: true,
-                    description: "Descriptipn",
-                    directives: new DirectiveInstance[]
-                    {
-                        /* directive */
-                    })
-            );
-
-
-            /* Then */
-            var isDefined = false;
-            builder.Connections(connect => isDefined = connect.TryGetInputField(input1, "field1", out _));
-            Assert.True(isDefined);
-        }
-
-        [Fact]
-        public void Create_InputObject_field_when_type_not_known()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            var input1 = new InputObjectType("Type");
-
-            /* When */
-            var exception = Assert.Throws<SchemaBuilderException>(() => builder.Connections(connect => connect
-                .InputField(
-                    owner: input1,
-                    fieldName: "field1",
-                    to: ScalarType.NonNullBoolean,
-                    defaultValue: true,
-                    description: "Descriptipn",
-                    directives: new DirectiveInstance[]
-                    {
-                        /* directive */
-                    })
-            ));
-
-
-            /* Then */
-            Assert.Equal("Type", exception.TypeName);
-        }
-
-        [Fact]
-        public void Create_Interface()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Interface1";
-
-            /* When */
-            builder.Interface(
-                name: name,
-                out var interface1,
-                description: "Description",
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                });
-
-            /* Then */
-            Assert.Equal(name, interface1.Name);
-            Assert.True(builder.TryGetType<InterfaceType>(interface1.Name, out _));
-        }
-
-        [Fact]
-        public void Create_Interface_field()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Interface(
-                name: "Interface1",
-                out var interface1);
-
-            /* When */
-            builder.Connections(connect =>
-            {
-                connect.Field(
-                    owner: interface1,
-                    fieldName: "field1",
-                    to: ScalarType.Int,
-                    description: "Description",
-                    resolve: null,
-                    subscribe: null,
-                    directives: new DirectiveInstance[]
-                    {
-                        /* directive */
-                    },
-                    args => args.Arg(
-                        name: "arg1",
-                        type: ScalarType.Boolean,
-                        defaultValue: true,
-                        description: "Description")
-                );
-            });
-
-            /* Then */
-            var isDefined = false;
-            builder.Connections(connect => isDefined = connect.TryGetField(interface1, "field1", out _));
-            Assert.True(isDefined);
-        }
-
-        [Fact]
-        public void Create_Mutation()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Query(out _);
-            builder.Mutation(out var mutation);
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            Assert.Equal(mutation, sut.Mutation);
-        }
-
-        [Fact]
-        public void Create_Object()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Object1";
-
-            /* When */
-            builder.Object(
-                name: name,
-                out var object1,
-                description: "Description",
-                interfaces: new InterfaceType[]
-                {
-                    /*interfaceType*/
-                },
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                });
-
-            /* Then */
-            Assert.Equal(name, object1.Name);
-            Assert.True(builder.TryGetType<ObjectType>(object1.Name, out _));
-        }
-
-        [Fact]
-        public void Create_Object_field()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Object(
-                name: "Object1",
-                out var object1);
-
-            /* When */
-            builder.Connections(connect =>
-            {
-                connect.Field(
-                    owner: object1,
-                    fieldName: "field1",
-                    to: ScalarType.Int,
-                    description: "Description",
-                    resolve: null,
-                    subscribe: null,
-                    directives: new DirectiveInstance[]
-                    {
-                        /* directive */
-                    },
-                    args => args.Arg(
-                        name: "arg1",
-                        type: ScalarType.Boolean,
-                        defaultValue: true,
-                        description: "Description")
-                );
-            });
-
-            /* Then */
-            var isDefined = false;
-            builder.Connections(connect => isDefined = connect.TryGetField(object1, "field1", out _));
-            Assert.True(isDefined);
-        }
-
-        [Fact]
-        public void Create_Object_field_when_type_not_known()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            var object1 = new ObjectType("Type");
-
-            /* When */
-            var exception = Assert.Throws<SchemaBuilderException>(() => builder.Connections(connect =>
-            {
-                connect.Field(
-                    owner: object1,
-                    fieldName: "field1",
-                    to: ScalarType.Int,
-                    description: "Description",
-                    resolve: null,
-                    subscribe: null,
-                    directives: new DirectiveInstance[]
-                    {
-                        /* directive */
-                    },
-                    args => args.Arg(
-                        name: "arg1",
-                        type: ScalarType.Boolean,
-                        defaultValue: true,
-                        description: "Description")
-                );
-            }));
-
-            /* Then */
-            Assert.Equal("Type", exception.TypeName);
-        }
-
-        [Fact]
-        public void Create_Object_throws_on_duplicate()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Object1";
-
-            builder.Object(
-                name: name,
-                out _);
-
-            /* When */
-            var exception = Assert.Throws<SchemaBuilderException>(() => builder.Object(name: name, out _));
-
-            /* Then */
-            Assert.Equal(name, exception.TypeName);
-        }
-
-        [Fact]
-        public void Create_Query()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Query(out var query);
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            Assert.Equal(query, sut.Query);
-        }
-
-        [Fact]
-        public void Create_Scalar()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Url";
-
-            /* When */
-            builder.Scalar(
-                name: name,
-                out var url,
-                converter: new StringConverter(),
-                description: "Description",
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                });
-
-            /* Then */
-            Assert.Equal(name, url.Name);
-            Assert.True(builder.TryGetType<ScalarType>(url.Name, out _));
-        }
-
-        [Fact]
-        public void Create_Scalar_without_converter()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            const string name = "Url";
-
-            /* When */
-            builder.Scalar(
-                name: name,
-                out var url,
-                description: "Description",
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                });
-
-            /* Then */
-            Assert.Equal(name, url.Name);
-            Assert.True(builder.TryGetType<ScalarType>(url.Name, out _));
-        }
-
-        [Fact]
-        public void Create_Subscription()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Query(out _);
-            builder.Mutation(out _);
-            builder.Subscription(out var subscription);
-
-            /* When */
-            var sut = builder.Build();
-
-            /* Then */
-            Assert.Equal(subscription, sut.Subscription);
-        }
-
-        [Fact]
-        public void Create_Union()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Object("Object1", out var object1);
-            builder.Object("Object2", out var object2);
-
-            const string name = "Union1";
-
-            /* When */
-            builder.Union(
-                name: name,
-                out var union1,
-                description: "Description",
-                directives: new DirectiveInstance[]
-                {
-                    /*directive*/
-                },
-                possibleTypes: new[] {object1, object2});
-
-            /* Then */
-            Assert.Equal(name, union1.Name);
-            Assert.True(builder.TryGetType<UnionType>(union1.Name, out _));
-        }
-
-        [Fact]
-        public async Task Make_executable_schema()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                    type Query {
-                        field1: Int!
-                    }
-
-                    schema {
-                        query: Query
-                    }
-                    "
-                );
-
-            var resolvers = new ObjectTypeMap
-            {
-                {
-                    "Query", new FieldResolversMap
-                    {
-                        {
-                            "field1", async context =>
-                            {
-                                await Task.Delay(1);
-                                return Resolve.As(1);
-                            }
-                        }
-                    }
-                }
-            };
-
-            /* When */
-            var executableSchema = SchemaTools.MakeExecutableSchema(
-                builder: builder,
-                resolvers: resolvers,
-                subscribers: null,
-                converters: null,
-                directives: null);
-
-            /* Then */
-            var result = await Executor.ExecuteAsync(
-                new ExecutionOptions
-                {
-                    Document = Parser.ParseDocument(@"{ field1 }"),
-                    Schema = executableSchema
-                });
-
-            result.ShouldMatchJson(
-                @"{
-                  ""data"": {
-                    ""field1"": 1
-                  }
-                }");
-        }
-
-        [Fact]
-        public void Merge_schemas()
-        {
-            /* Given */
-            var schema1 = new SchemaBuilder()
-                .Query(out var query1)
-                .Connections(connect =>
-                    connect.Field(query1, "field1", ScalarType.String)
-                )
-                .Build();
-
-            var schema2 = new SchemaBuilder()
-                .Query(out var query2)
-                .Connections(connect =>
-                    connect.Field(query2, "field2", ScalarType.Int)
-                )
-                .Build();
-
-            /* When */
-            var schema = new SchemaBuilder().Merge(schema1, schema2).Build();
-
-            /* Then */
-            var queryFields = schema.GetFields(query1.Name).ToList();
-            Assert.Single(queryFields, f => f.Key == "field1");
-            Assert.Single(queryFields, f => f.Key == "field2");
-        }
-
-        [Fact]
-        public void Requires_Query()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-
-            /* When */
-            var exception = Assert.Throws<ValidationException>(
-                () => builder.Build());
-
-            /* Then */
-            Assert.Contains(exception.Result.Errors, error => error.Code == "SCHEMA_QUERY_ROOT_MISSING");
-        }
-
-        [Fact]
-        public void Use_existing_schema()
-        {
-            /* Given */
-            var existingSchema = new SchemaBuilder()
-                .Query(out var query)
-                .Connections(connect =>
-                    connect.Field(query, "field1", ScalarType.String)
-                )
-                .Build();
-
-            /* When */
-            var schema = new SchemaBuilder().Import(existingSchema)
-                .Connections(connect => connect
-                    .Field(query, "field2", ScalarType.Int)
-                )
-                .Build();
-
-            /* Then */
-            var queryFields = schema.GetFields(query.Name).ToList();
-            Assert.Single(queryFields, f => f.Key == "field1");
-            Assert.Single(queryFields, f => f.Key == "field2");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/SchemaFacts.cs b/tests/graphql.tests/TypeSystem/SchemaFacts.cs
deleted file mode 100644
index 353091941..000000000
--- a/tests/graphql.tests/TypeSystem/SchemaFacts.cs
+++ /dev/null
@@ -1,201 +0,0 @@
-using System;
-using System.Linq;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class SchemaFacts
-    {
-        public SchemaFacts()
-        {
-            Schema = new SchemaBuilder()
-                .InputObject("input", out var input)
-                .Connections(connect => connect
-                    .InputField(input, "id", ScalarType.ID))
-                .Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "name", ScalarType.String))
-                .Build();
-        }
-
-        protected readonly ISchema Schema;
-
-        [Fact]
-        public void GetDirective()
-        {
-            /* Given */
-            var directiveTypeName = DirectiveType.Include.Name;
-
-            /* When */
-            var directiveType = Schema.GetDirectiveType(directiveTypeName);
-
-            /* Then */
-            Assert.NotNull(directiveType);
-            Assert.IsType<DirectiveType>(directiveType);
-        }
-
-        [Fact]
-        public void GetField()
-        {
-            /* Given */
-            var namedTypeName = Schema.Query.Name;
-
-            /* When */
-            var field = Schema.GetField(namedTypeName, "name");
-
-            /* Then */
-            Assert.NotNull(field);
-            Assert.Same(ScalarType.String, field.Type);
-        }
-
-        [Fact]
-        public void GetFields()
-        {
-            /* Given */
-            var namedTypeName = Schema.Query.Name;
-
-            /* When */
-            var fields = Schema.GetFields(namedTypeName);
-
-            /* Then */
-            Assert.Single(
-                fields,
-                kv => kv.Key == "name" && (ScalarType) kv.Value.Type == ScalarType.String);
-        }
-
-        [Fact]
-        public void GetInputField()
-        {
-            /* Given */
-            var inputTypeName = "input";
-
-            /* When */
-            var field = Schema.GetInputField(inputTypeName, "id");
-
-            /* Then */
-            Assert.NotNull(field);
-            Assert.Same(ScalarType.ID, field.Type);
-        }
-
-        [Fact]
-        public void GetInputFields()
-        {
-            /* Given */
-            var inputTypeName = "input";
-
-            /* When */
-            var fields = Schema.GetInputFields(inputTypeName);
-
-            /* Then */
-            Assert.Single(
-                fields,
-                kv => kv.Key == "id" && (ScalarType) kv.Value.Type == ScalarType.ID);
-        }
-
-        [Fact]
-        public void GetNamedType()
-        {
-            /* Given */
-            var namedTypeName = Schema.Query.Name;
-
-            /* When */
-            var namedType = Schema.GetNamedType(namedTypeName);
-
-            /* Then */
-            Assert.NotNull(namedType);
-            Assert.IsAssignableFrom<INamedType>(namedType);
-        }
-
-        [Fact]
-        public void QueryDirectives()
-        {
-            /* Given */
-            bool AppliesToField(DirectiveType type)
-            {
-                return type.Locations.Contains(DirectiveLocation.FIELD);
-            }
-
-            /* When */
-            var directives = Schema.QueryDirectiveTypes(AppliesToField)
-                .ToList();
-
-            /* Then */
-            foreach (var directiveType in directives) 
-                Assert.Contains(DirectiveLocation.FIELD, directiveType.Locations);
-        }
-
-        [Fact]
-        public void QueryNamedTypes()
-        {
-            /* Given */
-            bool TypesWithoutDescription(ObjectType type)
-            {
-                return string.IsNullOrEmpty(type.Description);
-            }
-
-            /* When */
-            var undocumentedTypes = Schema.QueryTypes<ObjectType>(TypesWithoutDescription);
-
-            /* Then */
-            Assert.NotNull(undocumentedTypes);
-            Assert.Single(undocumentedTypes, type => type.Name == "Query");
-        }
-
-        [Fact]
-        public void Roots_Mutation()
-        {
-            /* Given */
-            /* When */
-            /* Then */
-            Assert.Null(Schema.Mutation);
-        }
-
-        [Fact]
-        public void Roots_Query()
-        {
-            /* Given */
-            /* When */
-            /* Then */
-            Assert.NotNull(Schema.Query);
-            Assert.IsType<ObjectType>(Schema.Query);
-        }
-
-        [Fact]
-        public void Roots_Subscription()
-        {
-            /* Given */
-            /* When */
-            /* Then */
-            Assert.Null(Schema.Subscription);
-        }
-
-        [Fact]
-        public void Included_directives()
-        {
-            /* Given */ 
-            /* When */
-            var directives = Schema.QueryDirectiveTypes();
-
-            /* Then */
-            Assert.Single(directives, DirectiveType.Include);
-            Assert.Single(directives, DirectiveType.Skip);
-        }
-
-        [Fact]
-        public void Included_scalars()
-        {
-            /* Given */
-            /* When */
-            var scalars = Schema.QueryTypes<ScalarType>()
-                .ToList();
-
-            /* Then */
-            foreach (var scalar in ScalarType.Standard)
-            {
-                Assert.Contains(scalar.Type, scalars);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/StringTypeFacts.cs b/tests/graphql.tests/TypeSystem/StringTypeFacts.cs
deleted file mode 100644
index a3a5e9552..000000000
--- a/tests/graphql.tests/TypeSystem/StringTypeFacts.cs
+++ /dev/null
@@ -1,65 +0,0 @@
-
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class StringTypeFacts
-    {
-        private readonly IValueConverter _sut;
-
-        public StringTypeFacts()
-        {
-            _sut = new StringConverter();
-        }
-
-        [Theory]
-        [InlineData("string", "string")]
-        [InlineData(true, "True")]
-        [InlineData(123, "123")]
-        [InlineData(123.123, "123.123")]
-        public void ParseValue(object input, string expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.ParseValue(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("string", "string")]
-        [InlineData("true", "true")]
-        [InlineData("123", "123")]
-        [InlineData("123.123", "123.123")]
-        public void ParseLiteral(string input, string expected)
-        {
-            /* Given */
-            StringValue astValue = input;
-
-            /* When */
-            var actual = _sut.ParseLiteral(astValue);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Theory]
-        [InlineData("string", "string")]
-        [InlineData(true, "True")]
-        [InlineData(123, "123")]
-        [InlineData(123.123, "123.123")]
-        public void Serialize(object input, string expected)
-        {
-            /* Given */
-            /* When */
-            var actual = _sut.Serialize(input);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/TypeSystem/UnionTypeFacts.cs b/tests/graphql.tests/TypeSystem/UnionTypeFacts.cs
deleted file mode 100644
index 5b0183fde..000000000
--- a/tests/graphql.tests/TypeSystem/UnionTypeFacts.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.TypeSystem
-{
-    public class UnionTypeFacts
-    {
-        [Fact]
-        public void Define_union()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-
-            builder.Object("Person", out var person)
-                .Connections(connect => connect
-                    .Field(person, "name", ScalarType.NonNullString));
-
-            builder.Object("Photo", out var photo)
-                .Connections(connect => connect
-                    .Field(photo, "height", ScalarType.NonNullInt)
-                    .Field(photo, "width", ScalarType.NonNullInt));
-
-            /* When */
-            builder.Union("SearchResult", out var searchResult,
-                possibleTypes: new[] {person, photo});
-
-            var personIsPossible = searchResult.IsPossible(person);
-            var photoIsPossible = searchResult.IsPossible(photo);
-
-            /* Then */
-            Assert.True(personIsPossible);
-            Assert.True(photoIsPossible);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index 68ca7149c..1b8df810a 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -1,45 +1,70 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.tests</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Tests</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>
-    <None Remove="Files\Embedded.graphql" />
-    <None Remove="Files\Import.graphql" />
-    <None Remove="Files\Nested.graphql" />
+    <Compile Remove="Analysis\**" />
+    <Compile Remove="Bug\**" />
+    <Compile Remove="Descriptions\**" />
+    <Compile Remove="Execution\**" />
+    <Compile Remove="Extensions\**" />
+    <Compile Remove="Introspection\**" />
+    <Compile Remove="Tools\**" />
+    <Compile Remove="TypeSystem\**" />
+    <Compile Remove="Validation\**" />
+    <Compile Remove="ValueResolution\**" />
+    <EmbeddedResource Remove="Analysis\**" />
+    <EmbeddedResource Remove="Bug\**" />
+    <EmbeddedResource Remove="Descriptions\**" />
+    <EmbeddedResource Remove="Execution\**" />
+    <EmbeddedResource Remove="Extensions\**" />
+    <EmbeddedResource Remove="Introspection\**" />
+    <EmbeddedResource Remove="Tools\**" />
+    <EmbeddedResource Remove="TypeSystem\**" />
+    <EmbeddedResource Remove="Validation\**" />
+    <EmbeddedResource Remove="ValueResolution\**" />
+    <None Remove="Analysis\**" />
+    <None Remove="Bug\**" />
+    <None Remove="Descriptions\**" />
+    <None Remove="Execution\**" />
+    <None Remove="Extensions\**" />
+    <None Remove="Introspection\**" />
+    <None Remove="Tools\**" />
+    <None Remove="TypeSystem\**" />
+    <None Remove="Validation\**" />
+    <None Remove="ValueResolution\**" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <Compile Remove="ExtensionsRunnerFacts.cs" />
+    <Compile Remove="StarwarsFacts.cs" />
+    <Compile Remove="SubscriptionsFacts.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageReference Include="NSubstitute" Version="4.2.2" />
-    <PackageReference Include="System.Text.Json" Version="5.0.2" />
+    <PackageReference Include="NSubstitute" Version="4.3.0" />
+    <PackageReference Include="System.Text.Json" Version="6.0.2" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
   </ItemGroup>
   
   <ItemGroup>
-    <EmbeddedResource Include="Files\Embedded.graphql">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </EmbeddedResource>
-    <EmbeddedResource Include="Files\Nested.graphql">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </EmbeddedResource>
-    <EmbeddedResource Include="Files\Import.graphql">
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </EmbeddedResource>
     <EmbeddedResource Include="github.graphql" />
+    <EmbeddedResource Include="Files\Embedded.graphql" />
   </ItemGroup>
 
   <ItemGroup>
@@ -47,4 +72,13 @@
     <ProjectReference Include="..\graphql.tests.data\graphql.tests.data.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="Files\Import.graphql">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Update="Files\Nested.graphql">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>
diff --git a/tutorials/graphql.tutorials.getting-started/graphql.tutorials.getting-started.csproj b/tutorials/graphql.tutorials.getting-started/graphql.tutorials.getting-started.csproj
index 551ec4b1e..22019d977 100644
--- a/tutorials/graphql.tutorials.getting-started/graphql.tutorials.getting-started.csproj
+++ b/tutorials/graphql.tutorials.getting-started/graphql.tutorials.getting-started.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <RootNamespace>Tanka.GraphQL.Tutorials.GettingStarted</RootNamespace>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.tutorials.getting-started</AssemblyName>
@@ -10,14 +10,14 @@
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
     
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="5.0.9" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="5.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.2" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="6.0.1" />
   </ItemGroup>
 
   <ItemGroup>

From a9fd1bc0553fa18bc8de808cf9b1bced649b26bd Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Thu, 10 Feb 2022 17:33:11 +0200
Subject: [PATCH 03/26] More tests and introspection working

---
 .../Nodes/TypeSystem/ArgumentsDefinition.cs   |  30 +-
 src/graphql/Execution/Arguments.cs            |   7 +-
 src/graphql/Execution/Variables.cs            |  11 +-
 .../Introspection/IntrospectionResolvers.cs   |  79 ++-
 .../Introspection/IntrospectionSchema.cs      |   5 +
 src/graphql/TypeSystem/SchemaBuilder.cs       |  17 +-
 .../ValueResolution/CompleteValueResult.cs    |  16 +-
 tests/graphql.tests/Bug/Bug_339.cs            |  63 +-
 .../graphql.tests/Descriptions/FieldFacts.cs  |  35 -
 .../Execution/FieldErrorsFacts.cs             | 496 +++++++-------
 .../Execution/NullErrorsFacts.cs              | 366 +++++-----
 tests/graphql.tests/Execution/TypeIsFacts.cs  | 102 ---
 .../Introspection/IntrospectSchemaFacts.cs    | 646 ++++++++++--------
 .../InterfaceCompletionFacts.cs               | 229 ++++---
 .../ValueResolution/ResolverBuilderFacts.cs   | 206 +++---
 .../ValueResolution/ResolverContextFacts.cs   | 486 +++++++------
 .../SchemaDirectiveExecutorFacts.cs           |   3 -
 .../ValueResolution/UnionCompletionFacts.cs   | 224 +++---
 tests/graphql.tests/graphql.tests.csproj      |  13 +-
 19 files changed, 1519 insertions(+), 1515 deletions(-)
 delete mode 100644 tests/graphql.tests/Descriptions/FieldFacts.cs
 delete mode 100644 tests/graphql.tests/Execution/TypeIsFacts.cs
 delete mode 100644 tests/graphql.tests/ValueResolution/SchemaDirectiveExecutorFacts.cs

diff --git a/src/graphql.language/Nodes/TypeSystem/ArgumentsDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ArgumentsDefinition.cs
index 3af371e49..508ba26e4 100644
--- a/src/graphql.language/Nodes/TypeSystem/ArgumentsDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ArgumentsDefinition.cs
@@ -1,22 +1,24 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class ArgumentsDefinition : CollectionNodeBase<InputValueDefinition>
 {
-    public sealed class ArgumentsDefinition : CollectionNodeBase<InputValueDefinition>
+    public ArgumentsDefinition(IReadOnlyList<InputValueDefinition> items, in Location? location = default) :
+        base(items, in location)
     {
-        public ArgumentsDefinition(IReadOnlyList<InputValueDefinition> items, in Location? location = default) :
-            base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.ArgumentsDefinition;
+    public override NodeKind Kind => NodeKind.ArgumentsDefinition;
 
-        public static ArgumentsDefinition? From(IReadOnlyList<InputValueDefinition>? args)
-        {
-            if (args == null)
-                return null;
+    public static ArgumentsDefinition None { get; } = new(Array.Empty<InputValueDefinition>());
+
+    public static ArgumentsDefinition? From(IReadOnlyList<InputValueDefinition>? args)
+    {
+        if (args == null)
+            return null;
 
-            return new ArgumentsDefinition(args);
-        }
+        return new ArgumentsDefinition(args);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Arguments.cs b/src/graphql/Execution/Arguments.cs
index 9c96a67c5..42c4f8563 100644
--- a/src/graphql/Execution/Arguments.cs
+++ b/src/graphql/Execution/Arguments.cs
@@ -16,7 +16,7 @@ public static class ArgumentCoercion
             Argument? argument)
         {
             var argumentType = argumentDefinition.Type;
-            var defaultValue = argumentDefinition.DefaultValue;
+            var defaultValue = argumentDefinition.DefaultValue?.Value;
             var argumentValue = argument?.Value;
 
             var hasValue = argumentValue != null;
@@ -61,7 +61,10 @@ public static class ArgumentCoercion
                 return coercedValue;
             }
 
-            return defaultValue;
+            return Values.CoerceValue(
+                schema,
+                defaultValue,
+                argumentType);
         }
 
         public static IReadOnlyDictionary<string, object?> CoerceArgumentValues(
diff --git a/src/graphql/Execution/Variables.cs b/src/graphql/Execution/Variables.cs
index 9b369a018..4fa13de4c 100644
--- a/src/graphql/Execution/Variables.cs
+++ b/src/graphql/Execution/Variables.cs
@@ -26,12 +26,17 @@ public static class Variables
                 if (!TypeIs.IsInputType(schema, variableType))
                     throw new VariableException($"Variable is not of input type", variableName, variableType);
 
-                var defaultValue = variableDefinition.DefaultValue;
+                var defaultValue = variableDefinition.DefaultValue?.Value;
                 var hasValue = variableValues.ContainsKey(variableName);
                 var value = hasValue ? variableValues[variableName]: null;
 
-                if (!hasValue && defaultValue != null) 
-                    coercedValues[variableName] = defaultValue;
+                if (!hasValue && defaultValue != null)
+                {
+                    coercedValues[variableName] = Values.CoerceValue(
+                        schema,
+                        defaultValue,
+                        variableType);;
+                }
 
                 if (variableType is NonNullType
                     && (!hasValue || value == null))
diff --git a/src/graphql/Introspection/IntrospectionResolvers.cs b/src/graphql/Introspection/IntrospectionResolvers.cs
index 97b22ba1e..63e4654f4 100644
--- a/src/graphql/Introspection/IntrospectionResolvers.cs
+++ b/src/graphql/Introspection/IntrospectionResolvers.cs
@@ -17,32 +17,29 @@ public IntrospectionResolvers(ISchema source)
             {
                 {"__schema", context => ResolveSync.As(source)},
                 {
-                    "__type", context => ResolveSync.As(
-                        source.GetNamedType(context.GetArgument<string>("name")))
+                    "__type", context => ResolveSync.As(source.GetNamedType(context.GetArgument<string>("name")))
                 }
             };
 
             this[IntrospectionSchema.SchemaName] = new FieldResolversMap
             {
-                {"types", context => ResolveSync.As(source.QueryTypes<TypeDefinition>())},
+                {"types", context => ResolveSync.As(source.QueryTypes<TypeDefinition>().OrderBy(t => t.Name.Value))},
                 {"queryType", context => ResolveSync.As(source.Query)},
                 {"mutationType", context => ResolveSync.As(source.Mutation)},
                 {"subscriptionType", context => ResolveSync.As(source.Subscription)},
-                {"directives", context => ResolveSync.As(source.QueryDirectiveTypes())}
+                {"directives", context => ResolveSync.As(source.QueryDirectiveTypes().OrderBy(t => t.Name.Value))}
             };
 
             this[IntrospectionSchema.TypeName] = new FieldResolversMap
             {
-                {"kind", Resolve.PropertyOf<INode>(t => KindOf(t))},
-                {"name", Resolve.PropertyOf<TypeDefinition>(t => t.Name)},
+                {"kind", Resolve.PropertyOf<INode>(t => KindOf(source, t))},
+                {"name", Resolve.PropertyOf<INode>(t => NameOf(source, t))},
                 {"description", Resolve.PropertyOf<INode>(t => Describe(t))},
 
                 // OBJECT and INTERFACE only
                 {
                     "fields", context =>
                     {
-                        var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
-
                         var fields = context.ObjectValue switch
                         {
                             null => null,
@@ -54,16 +51,16 @@ public IntrospectionResolvers(ISchema source)
                         if (fields is null)
                             return ResolveSync.As(null);
 
-
+                        var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
                         if (!includeDeprecated) 
                             fields = fields.Where(f => !f.Value.TryGetDirective("deprecated", out _));
 
-                        return ResolveSync.As(fields.ToList());
+                        return ResolveSync.As(fields.OrderBy(t => t.Key).ToList());
                     }
                 },
 
                 // OBJECT only
-                {"interfaces", Resolve.PropertyOf<ObjectDefinition>(t => t.Interfaces)},
+                {"interfaces", Resolve.PropertyOf<ObjectDefinition>(t => t.Interfaces?.OrderBy(t => t.Name.Value))},
 
 
                 // INTERFACE and UNION only
@@ -78,7 +75,7 @@ public IntrospectionResolvers(ISchema source)
                             _ => null
                         };
 
-                        return ResolveSync.As(possibleTypes);
+                        return ResolveSync.As(possibleTypes?.OrderBy(t => t.Name.Value));
                     }
                 },
 
@@ -98,21 +95,23 @@ public IntrospectionResolvers(ISchema source)
                         if (!includeDeprecated) 
                             values = values?.Where(f => !f.TryGetDirective("deprecated", out _)).ToList();
 
-                        return ResolveSync.As(values);
+                        return ResolveSync.As(values?.OrderBy(t => t.Value.Name.Value));
                     }
                 },
 
                 // INPUT_OBJECT only
                 {
                     "inputFields", Resolve.PropertyOf<InputObjectDefinition>(t => source.GetInputFields(t.Name)
-                        .Select(iof => iof.Value).ToList())
+                        .Select(iof => iof.Value).OrderBy(t => t.Name.Value).ToList())
                 },
 
                 // NON_NULL and LIST only
-                {"ofType", Resolve.PropertyOf<INode>(t => t switch
+                {"ofType", Resolve.PropertyOf<TypeBase>(t => t switch
                 {
-                    NonNullType NonNullType => NonNullType.OfType,
-                    ListType list => list.OfType
+                    null => null,
+                    NonNullType nonNullType => nonNullType.OfType,
+                    ListType list => list.OfType,
+                    _ => null
                 })}
             };
 
@@ -120,7 +119,7 @@ public IntrospectionResolvers(ISchema source)
             {
                 {"name", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Key)},
                 {"description", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Description)},
-                {"args", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Arguments)},
+                {"args", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Arguments ?? ArgumentsDefinition.None)},
                 {"type", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Type)},
                 {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out _))},
                 {"deprecationReason", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out var reason) ? reason: null)}
@@ -128,19 +127,19 @@ public IntrospectionResolvers(ISchema source)
 
             this[IntrospectionSchema.InputValueName] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.Description)},
-                {"type", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.Type)},
-                {"defaultValue", Resolve.PropertyOf<KeyValuePair<string, InputValueDefinition>>(f => f.Value.DefaultValue)}
+                {"name", Resolve.PropertyOf<InputValueDefinition>(f => f.Name.Value)},
+                {"description", Resolve.PropertyOf<InputValueDefinition>(f => f.Description)},
+                {"type", Resolve.PropertyOf<InputValueDefinition>(f => f.Type)},
+                {"defaultValue", Resolve.PropertyOf<InputValueDefinition>(f => Execution.Values.CoerceValue(source, f.DefaultValue?.Value, f.Type))}
             };
 
             this[IntrospectionSchema.EnumValueName] = new FieldResolversMap
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.Description)},
-                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.IsDeprecated(out _))},
+                {"name", Resolve.PropertyOf<EnumValueDefinition>(f => f.Value.Name)},
+                {"description", Resolve.PropertyOf<EnumValueDefinition>(f => f.Description)},
+                {"isDeprecated", Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out _))},
                 {
-                    "deprecationReason", Resolve.PropertyOf<KeyValuePair<string, EnumValueDefinition>>(f => f.Value.IsDeprecated(out var reason) ? reason : null)
+                    "deprecationReason", Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out var reason) ? reason : null)
                 }
             };
 
@@ -149,7 +148,21 @@ public IntrospectionResolvers(ISchema source)
                 {"name", Resolve.PropertyOf<DirectiveDefinition>(d => d.Name)},
                 {"description", Resolve.PropertyOf<DirectiveDefinition>(d => d.Description)},
                 {"locations", Resolve.PropertyOf<DirectiveDefinition>(d => LocationsOf(d.DirectiveLocations))},
-                {"args", Resolve.PropertyOf<DirectiveDefinition>(d => d.Arguments)}
+                {"args", Resolve.PropertyOf<DirectiveDefinition>(d =>
+                {
+                    return d.Arguments?.OrderBy(t => t.Name.Value);
+                })}
+            };
+        }
+
+        private string? NameOf(ISchema source, INode? type)
+        {
+            return type switch
+            {
+                null => null,
+                NamedType namedType => namedType.Name.Value,
+                TypeDefinition typeDefinition => typeDefinition.Name.Value,
+                _ => null
             };
         }
 
@@ -162,14 +175,20 @@ public IntrospectionResolvers(ISchema source)
                 InterfaceDefinition interfaceDefinition => interfaceDefinition.Description,
                 FieldDefinition fieldDefinition => fieldDefinition.Description,
                 DirectiveDefinition directiveDefinition => directiveDefinition.Description,
-                _ => null, //todo: list all types with descriptions
+                ScalarDefinition scalarDefinition => scalarDefinition.Description,
+                UnionDefinition unionDefinition => unionDefinition.Description,
+                EnumDefinition enumDefinition => enumDefinition.Description,
+                InputObjectDefinition inputObjectDefinition => inputObjectDefinition.Description,
+                InputValueDefinition inputValueDefinition => inputValueDefinition.Description,
+                EnumValueDefinition enumValueDefinition => enumValueDefinition.Description
             };
         }
 
-        public static __TypeKind KindOf(INode type)
+        public static __TypeKind KindOf(ISchema source, INode type)
         {
             return type switch
             {
+                NamedType namedType => KindOf(source, source.GetRequiredNamedType<TypeDefinition>(namedType.Name)),
                 ObjectDefinition _ => __TypeKind.OBJECT,
                 ScalarDefinition _ => __TypeKind.SCALAR,
                 EnumDefinition _ => __TypeKind.ENUM,
@@ -178,7 +197,7 @@ public static __TypeKind KindOf(INode type)
                 ListType _ => __TypeKind.LIST,
                 NonNullType _ => __TypeKind.NON_NULL,
                 UnionDefinition _ => __TypeKind.UNION,
-                _ => throw new InvalidOperationException($"Cannot get kind form {type}")
+                _ => throw new InvalidOperationException($"Cannot get kind from {type}")
             };
         }
 
diff --git a/src/graphql/Introspection/IntrospectionSchema.cs b/src/graphql/Introspection/IntrospectionSchema.cs
index fce4ff047..a6f66c99e 100644
--- a/src/graphql/Introspection/IntrospectionSchema.cs
+++ b/src/graphql/Introspection/IntrospectionSchema.cs
@@ -110,6 +110,11 @@ enum __DirectiveLocation {
   INPUT_OBJECT
   INPUT_FIELD_DEFINITION
 }
+
+type Query {
+    __type(name: String!): __Type
+    __schema: __Schema
+}
 ");
 
         return builder;
diff --git a/src/graphql/TypeSystem/SchemaBuilder.cs b/src/graphql/TypeSystem/SchemaBuilder.cs
index d11aae5df..98d4c601a 100644
--- a/src/graphql/TypeSystem/SchemaBuilder.cs
+++ b/src/graphql/TypeSystem/SchemaBuilder.cs
@@ -216,7 +216,7 @@ public async Task<ISchema> Build(SchemaBuildOptions options)
             options.OverrideSubscriptionRootName
         );
 
-        var fields = namedTypeDefinitions
+        var allFields = namedTypeDefinitions
             .Where(kv => kv.Value is ObjectDefinition)
             .ToDictionary(
                 kv => kv.Key,
@@ -224,6 +224,19 @@ public async Task<ISchema> Build(SchemaBuildOptions options)
                       NoFields
             );
 
+        var interfaceFields = namedTypeDefinitions
+            .Where(kv => kv.Value is InterfaceDefinition)
+            .ToDictionary(
+                kv => kv.Key,
+                kv => ((InterfaceDefinition)kv.Value).Fields?.ToDictionary(field => field.Name.Value, field => field) ??
+                      NoFields
+            );
+
+        foreach (var (type,fields) in interfaceFields)
+        {
+            allFields.Add(type, fields);
+        }
+
         var inputFields = namedTypeDefinitions
             .Where(kv => kv.Value is InputObjectDefinition)
             .ToDictionary(
@@ -240,7 +253,7 @@ public async Task<ISchema> Build(SchemaBuildOptions options)
 
         ISchema schema = new ExecutableSchema(
             namedTypeDefinitions,
-            fields,
+            allFields,
             inputFields,
             _directiveDefinitions.ToDictionary(kv => kv.Key, kv => kv.Value),
             queryRoot,
diff --git a/src/graphql/ValueResolution/CompleteValueResult.cs b/src/graphql/ValueResolution/CompleteValueResult.cs
index e5c130737..1abba5214 100644
--- a/src/graphql/ValueResolution/CompleteValueResult.cs
+++ b/src/graphql/ValueResolution/CompleteValueResult.cs
@@ -52,7 +52,7 @@ public CompleteValueResult(object? value)
         {
             if (value is IResolverResult)
             {
-                throw new CompleteValueException($"Cannot complete value for field '{context.FieldName}':'{context.Field.Type}'. Resolving {nameof(IResolverResult)} value is not supported.",
+                throw new CompleteValueException($"Cannot complete value for field '{Printer.Print(context.Field)}'. Resolving {nameof(IResolverResult)} value is not supported.",
                     path,
                     context.Selection);
             }
@@ -79,7 +79,7 @@ public CompleteValueResult(object? value)
                 InterfaceDefinition interfaceType => CompleteInterfaceValueAsync(value, interfaceType, path, context),
                 UnionDefinition unionDefinition => CompleteUnionValueAsync(value, unionDefinition, path, context),
                 _ => throw new CompleteValueException(
-                    $"Cannot complete value for field {context.FieldName}. Cannot complete value of type {fieldType}.",
+                    $"Cannot complete value for field {context.FieldName}. Cannot complete value of type {Printer.Print(fieldType)}.",
                     path,
                     context.Selection)
             };
@@ -107,15 +107,15 @@ public CompleteValueResult(object? value)
 
             if (actualType == null)
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{unionDefinition}'. " +
+                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
                     "ActualType is required for union values.",
                     path,
                     context.Selection);
 
             if (!unionDefinition.HasMember(actualType.Name))
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{unionDefinition}'. " +
-                    $"ActualType '{actualType}' is not possible for '{unionDefinition}'",
+                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                    $"ActualType '{actualType.Name}' is not possible for '{unionDefinition.Name}'",
                     path,
                     context.Selection);
 
@@ -140,15 +140,15 @@ public CompleteValueResult(object? value)
 
             if (actualType == null)
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{interfaceType}'. " +
+                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
                     "ActualType is required for interface values.",
                     path,
                     context.Selection);
 
             if (!actualType.HasInterface(interfaceType.Name))
                 throw new CompleteValueException(
-                    $"Cannot complete value for field '{context.FieldName}':'{interfaceType}'. " +
-                    $"ActualType '{actualType}' does not implement interface '{interfaceType}'",
+                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                    $"ActualType '{actualType.Name}' does not implement interface '{interfaceType.Name}'",
                     path,
                     context.Selection);
 
diff --git a/tests/graphql.tests/Bug/Bug_339.cs b/tests/graphql.tests/Bug/Bug_339.cs
index 4db691a6d..78e66d906 100644
--- a/tests/graphql.tests/Bug/Bug_339.cs
+++ b/tests/graphql.tests/Bug/Bug_339.cs
@@ -1,21 +1,19 @@
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Bug
+namespace Tanka.GraphQL.Tests.Bug;
+
+public class Bug_339
 {
-    public class Bug_339
+    [Fact]
+    public async Task Introspection_should_pass()
     {
-        [Fact]
-        public async Task Introspection_should_pass()
-        {
-            /* Given */
-            var schema = new SchemaBuilder()
-                .Sdl(@"
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
                         input InputItem {
                           foo: [String]
                         }
@@ -33,37 +31,36 @@ type Query {
                             mutation: Mutation
                         }
                 ")
-                .Build();
+            .Build(new SchemaBuildOptions());
 
-            var introspectionSchema = Introspect.Schema(schema);
+        var introspectionSchema = await Introspect.Schema(schema);
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = introspectionSchema,
-                Document = Parser.ParseDocument(Introspect.DefaultQuery)
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = introspectionSchema,
+            Document = Introspect.DefaultQuery
+        });
 
-            /* Then */
-            var types = (List<object>)result.Select("__schema", "types");
+        /* Then */
+        var types = (List<object>)result.Select("__schema", "types");
 
-            foreach (var type in types)
+        foreach (var type in types)
+        {
+            var typeDictionary = (Dictionary<string, object>)type;
+
+            if ((string)typeDictionary["name"] == "InputItem")
             {
-                var typeDictionary = (Dictionary<string, object>) type;
+                var inputFields = (List<object>)typeDictionary["inputFields"];
 
-                if ((string) typeDictionary["name"] == "InputItem")
+                foreach (var inputField in inputFields)
                 {
-                    var inputFields = (List<object>)typeDictionary["inputFields"];
+                    var inputFieldDictionary = (Dictionary<string, object>)inputField;
 
-                    foreach (var inputField in inputFields)
+                    if ((string)inputFieldDictionary["name"] == "foo")
                     {
-                        var inputFieldDictionary = (Dictionary<string, object>) inputField;
-
-                        if ((string) inputFieldDictionary["name"] == "foo")
-                        {
-                            var defaultValue = inputFieldDictionary["defaultValue"];
-                            Assert.Null(defaultValue);
-                        }
+                        var defaultValue = inputFieldDictionary["defaultValue"];
+                        Assert.Null(defaultValue);
                     }
                 }
             }
diff --git a/tests/graphql.tests/Descriptions/FieldFacts.cs b/tests/graphql.tests/Descriptions/FieldFacts.cs
deleted file mode 100644
index ccbe1655e..000000000
--- a/tests/graphql.tests/Descriptions/FieldFacts.cs
+++ /dev/null
@@ -1,35 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.Descriptions
-{
-    public class FieldFacts
-    {
-        [Fact]
-        public void Describe()
-        {
-            /* Given */
-            var description = "Unique ID of the object";
-
-            /* When */
-            var field = new Field(
-                ScalarType.NonNullID,
-                description: description);
-
-            /* Then */
-            Assert.Equal(field.Description, description);
-        }
-
-        [Fact]
-        public void Meta_is_always_available()
-        {
-            /* Given */
-            /* When */
-            var field = new Field(
-                ScalarType.NonNullID);
-
-            /* Then */
-            Assert.Empty(field.Description);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/Execution/FieldErrorsFacts.cs b/tests/graphql.tests/Execution/FieldErrorsFacts.cs
index 7411d31e2..8ecf7fcbe 100644
--- a/tests/graphql.tests/Execution/FieldErrorsFacts.cs
+++ b/tests/graphql.tests/Execution/FieldErrorsFacts.cs
@@ -1,62 +1,54 @@
 using System;
 using System.Collections.Generic;
-using System.ComponentModel;
 using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Execution
+namespace Tanka.GraphQL.Tests.Execution;
+
+public class Query
 {
-    public class Query
+    public Query()
     {
-        public Query()
-        {
-            Container = new Container();
-            Custom = new CustomContainer();
-        }
-
-        public Container Container { get; }
-
-        public CustomContainer Custom { get; }
+        Container = new Container();
+        Custom = new CustomContainer();
     }
 
-    public class Container
-    {
-        public string NonNull_WithNull => null;
+    public Container Container { get; }
 
-        public string NonNull => "value";
+    public CustomContainer Custom { get; }
+}
 
-        public List<string> NonNullList_AsNull => null;
+public class Container
+{
+    public string NonNull => "value";
+    public string NonNull_WithNull => null;
 
-        public List<string> NonNullList_WithNullSecondItem => new List<string>()
-        {
-            "first",
-            null,
-            "third"
-        };
-    }
+    public List<string> NonNullList_AsNull => null;
 
-    public class CustomContainer
+    public List<string> NonNullList_WithNullSecondItem => new()
     {
+        "first",
+        null,
+        "third"
+    };
+}
 
-    }
-
-    public class FieldErrorsFacts
-    {
-        private readonly ISchema _schema;
+public class CustomContainer
+{
+}
 
-        public Query Query { get; }
+public class FieldErrorsFacts
+{
+    private readonly ISchema _schema;
 
-        public FieldErrorsFacts()
-        {
-            Query = new Query();
-            var builder = new SchemaBuilder()
-                .Sdl(
+    public FieldErrorsFacts()
+    {
+        Query = new Query();
+        var builder = new SchemaBuilder()
+            .Add(
                 @"
                     type Container {
                         nonNullWithNull: String!
@@ -82,154 +74,156 @@ type Query {
                     }
                 ");
 
-            var resolvers = new ObjectTypeMap()
+        var resolvers = new ResolversMap
+        {
+            ["Container"] = new()
             {
-                ["Container"] = new FieldResolversMap()
-                {
-                    {"nonNullWithNull", Resolve.PropertyOf<Container>(c => c.NonNull_WithNull)},
-                    {"nonNullListAsNull", Resolve.PropertyOf<Container>(c => c.NonNullList_AsNull)},
-                    {"nonNullListWithNonNullItem", Resolve.PropertyOf<Container>(c => c.NonNullList_WithNullSecondItem)},
-                    {"nonNullListWithNullItem", Resolve.PropertyOf<Container>(c => c.NonNullList_WithNullSecondItem)}
-                },
-                ["CustomErrorContainer"] = new FieldResolversMap()
-                {
-                    {"nonNullWithCustomError", context => throw new InvalidOperationException("error")},
-                    {"nullableWithCustomError", context => throw new InvalidOperationException("error")},
-                    {"nonNullListWithCustomError", context => throw new InvalidOperationException("error")},
-                    {"nonNullListItemWithCustomError", context => throw new InvalidOperationException("error")}
-                },
-                ["Query"] = new FieldResolversMap()
-                {
-                    {"container" , context => new ValueTask<IResolverResult>(Resolve.As(Query.Container))},
-                    {"custom", context=> new ValueTask<IResolverResult>(Resolve.As(Query.Custom))}
-                }
-            };
+                { "nonNullWithNull", Resolve.PropertyOf<Container>(c => c.NonNull_WithNull) },
+                { "nonNullListAsNull", Resolve.PropertyOf<Container>(c => c.NonNullList_AsNull) },
+                { "nonNullListWithNonNullItem", Resolve.PropertyOf<Container>(c => c.NonNullList_WithNullSecondItem) },
+                { "nonNullListWithNullItem", Resolve.PropertyOf<Container>(c => c.NonNullList_WithNullSecondItem) }
+            },
+            ["CustomErrorContainer"] = new()
+            {
+                { "nonNullWithCustomError", context => throw new InvalidOperationException("error") },
+                { "nullableWithCustomError", context => throw new InvalidOperationException("error") },
+                { "nonNullListWithCustomError", context => throw new InvalidOperationException("error") },
+                { "nonNullListItemWithCustomError", context => throw new InvalidOperationException("error") }
+            },
+            ["Query"] = new()
+            {
+                { "container", context => new ValueTask<IResolverResult>(Resolve.As(Query.Container)) },
+                { "custom", context => new ValueTask<IResolverResult>(Resolve.As(Query.Custom)) }
+            }
+        };
 
-            _schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                resolvers);
-        }
+        _schema = builder.Build(resolvers).Result;
+    }
 
-        [Fact]
-        public async Task NullValue_resolved_for_non_null_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    public Query Query { get; }
+
+    [Fact]
+    public async Task NullValue_resolved_for_non_null_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     container {
                         nonNullWithNull
                     }
                 }
-                ");
-
+                ";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
-                  ""data"": {
-                    ""container"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullWithNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 4,
-                          ""column"": 26
-                        }
-                      ],
-                      ""path"": [
-                        ""container"",
-                        ""nonNullWithNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
+
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
+  ""data"": {
+    ""container"": null
+  },
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullWithNull'."",
+      ""locations"": [
+        {
+          ""line"": 4,
+          ""column"": 26
         }
+      ],
+      ""path"": [
+        ""container"",
+        ""nonNullWithNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task NullValue_resolved_for_non_null_list_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task NullValue_resolved_for_non_null_list_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     container {
                         nonNullListAsNull
                     }
                 }
-                ");
-
+                ";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
-                  ""data"": {
-                    ""container"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullListAsNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 4,
-                          ""column"": 26
-                        }
-                      ],
-                      ""path"": [
-                        ""container"",
-                        ""nonNullListAsNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
+
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
+  ""data"": {
+    ""container"": null
+  },
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullListAsNull'."",
+      ""locations"": [
+        {
+          ""line"": 4,
+          ""column"": 26
         }
+      ],
+      ""path"": [
+        ""container"",
+        ""nonNullListAsNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task NullValue_item_resolved_for_non_null_list_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task NullValue_item_resolved_for_non_null_list_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     container {
                         nonNullListWithNullItem
                     }
                 }
-                ");
+                ";
 
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            /* Then */
-            // this is valid scenario as the requirement is to only have the list non null (items can be null)
-            result.ShouldMatchJson(@"{
+        /* Then */
+        // this is valid scenario as the requirement is to only have the list non null (items can be null)
+        result.ShouldMatchJson(@"{
                   ""data"": {
                     ""container"": {
                       ""nonNullListWithNullItem"": [
@@ -240,81 +234,82 @@ public async Task NullValue_item_resolved_for_non_null_list_field()
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task NullValue_item_resolved_for_non_null_list_with_non_null_items_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task NullValue_item_resolved_for_non_null_list_with_non_null_items_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     container {
                         nonNullListWithNonNullItem
                     }
                 }
-                ");
+                ";
 
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
-                  ""data"": {
-                    ""container"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullListWithNonNullItem'."",
-                      ""locations"": [
-                        {
-                          ""line"": 4,
-                          ""column"": 26
-                        }
-                      ],
-                      ""path"": [
-                        ""container"",
-                        ""nonNullListWithNonNullItem"",
-                        1
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
+
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
+  ""data"": {
+    ""container"": null
+  },
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Container.nonNullListWithNonNullItem'."",
+      ""locations"": [
+        {
+          ""line"": 4,
+          ""column"": 26
         }
+      ],
+      ""path"": [
+        ""container"",
+        ""nonNullListWithNonNullItem"",
+        1
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task Exception_thrown_by_NonNull_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task Exception_thrown_by_NonNull_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     custom {
                         nonNullWithCustomError
                     }
                 }
-                ");
+                ";
 
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"
+        /* Then */
+        result.ShouldMatchJson(
+            @"
                 {
                   ""data"": {
                     ""custom"": null
@@ -339,32 +334,32 @@ public async Task Exception_thrown_by_NonNull_field()
                   ]
                 }
                 ");
-        }
+    }
 
-        [Fact]
-        public async Task Exception_thrown_by_nullable_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task Exception_thrown_by_nullable_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     custom {
                         nullableWithCustomError
                     }
                 }
-                ");
+                ";
 
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"
+        /* Then */
+        result.ShouldMatchJson(
+            @"
                 {
                   ""data"": {
                     ""custom"": {
@@ -391,32 +386,32 @@ public async Task Exception_thrown_by_nullable_field()
                   ]
                 }
                 ");
-        }
+    }
 
-        [Fact]
-        public async Task Exception_thrown_by_nonNullList_field()
-        {
-            /* Given */
-            var query = Parser.ParseDocument(
-                @"
+    [Fact]
+    public async Task Exception_thrown_by_nonNullList_field()
+    {
+        /* Given */
+        var query =
+            @"
                 {
                     custom {
                         nonNullListWithCustomError
                     }
                 }
-                ");
+                ";
 
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = _schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"
+        /* Then */
+        result.ShouldMatchJson(
+            @"
                 {
                   ""data"": {
                     ""custom"": null
@@ -441,6 +436,5 @@ public async Task Exception_thrown_by_nonNullList_field()
                   ]
                 }
                 ");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Execution/NullErrorsFacts.cs b/tests/graphql.tests/Execution/NullErrorsFacts.cs
index 75a8a93a3..cd452e93c 100644
--- a/tests/graphql.tests/Execution/NullErrorsFacts.cs
+++ b/tests/graphql.tests/Execution/NullErrorsFacts.cs
@@ -1,113 +1,117 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Execution
+namespace Tanka.GraphQL.Tests.Execution;
+
+public class NullErrorsFacts
 {
-    public class NullErrorsFacts
+    private readonly ISchema _schema;
+
+    public NullErrorsFacts()
     {
-        public NullErrorsFacts()
+        var builder = new SchemaBuilder()
+            .Add(@"
+    type Nest 
+    {
+        nestedNonNull: String!
+    }
+
+    type Query 
+    {
+        nonNull: String!
+        nonNullNested: Nest!
+        nonNullListItem: [String!]
+        nonNullList: [String]!
+        nullableNested: Nest
+        nullable: String
+    }
+    ");
+
+
+        var nestedNonNullData = new Dictionary<string, string>
         {
-            var builder = new SchemaBuilder();
-            builder.Object("Nest", out var nested)
-                .Connections(connect => connect
-                .Field(nested, "nestedNonNull", ScalarType.NonNullString));
-
-            builder.Query(out var query)
-                .Connections(connect => connect
-                .Field(query, "nonNull", ScalarType.NonNullString)
-                .Field(query, "nonNullNested", new NonNull(nested))
-                .Field(query, "nonNullListItem", new List(ScalarType.NonNullString))
-                .Field(query, "nonNullList", new NonNull(new List(ScalarType.String)))
-                .Field(query, "nullableNested", nested)
-                .Field(query, "nullable", ScalarType.String));
-
-
-            var nestedNonNullData = new Dictionary<string, string>
-            {
-                ["nestedNonNull"] = null
-            };
+            ["nestedNonNull"] = null
+        };
 
-            IResolverMap resolvers = new ObjectTypeMap
+        IResolverMap resolvers = new ResolversMap
+        {
+            ["Query"] = new()
             {
-                ["Query"] = new FieldResolversMap
+                { "nonNull", context => new ValueTask<IResolverResult>(Resolve.As(null)) },
+                { "nonNullNested", context => new ValueTask<IResolverResult>(Resolve.As(nestedNonNullData)) },
                 {
-                    {"nonNull", context => new ValueTask<IResolverResult>(Resolve.As(null))},
-                    {"nonNullNested", context => new ValueTask<IResolverResult>(Resolve.As(nestedNonNullData))},
-                    {"nonNullListItem", context => new ValueTask<IResolverResult>(Resolve.As(new[] {"str", null, "str"}))},
-                    {"nonNullList", context => new ValueTask<IResolverResult>(Resolve.As(null))},
-                    {"nullableNested", context => new ValueTask<IResolverResult>(Resolve.As(nestedNonNullData))},
-                    {"nullable", context => new ValueTask<IResolverResult>(Resolve.As("hello"))}
+                    "nonNullListItem",
+                    context => new ValueTask<IResolverResult>(Resolve.As(new[] { "str", null, "str" }))
                 },
+                { "nonNullList", context => new ValueTask<IResolverResult>(Resolve.As(null)) },
+                { "nullableNested", context => new ValueTask<IResolverResult>(Resolve.As(nestedNonNullData)) },
+                { "nullable", context => new ValueTask<IResolverResult>(Resolve.As("hello")) }
+            },
 
-                ["Nest"] = new FieldResolversMap
-                {
-                    {"nestedNonNull", Resolve.PropertyOf<Dictionary<string, string>>(d => d["nestedNonNull"])}
-                }
-            };
-
-            _schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                resolvers);
-        }
+            ["Nest"] = new()
+            {
+                { "nestedNonNull", Resolve.PropertyOf<Dictionary<string, string>>(d => d["nestedNonNull"]) }
+            }
+        };
 
-        private readonly ISchema _schema;
+        _schema = builder.Build(resolvers).Result;
+    }
 
 
-        [Fact]
-        public async Task Nested_NonNull_should_produce_error_and_set_graph_to_null()
-        {
-            /* Given */
-            var query = @"
+    [Fact]
+    public async Task Nested_NonNull_should_produce_error_and_set_graph_to_null()
+    {
+        /* Given */
+        var query = @"
 {
     nonNullNested {
        nestedNonNull 
     }
 }";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document =  Parser.ParseDocument(query)
-            }).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        }).ConfigureAwait(false);
 
 
-            /* Then */
-            result.ShouldMatchJson(@"
+        /* Then */
+        result.ShouldMatchJson(@"
                 {
-                  ""data"": null,
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 4,
-                          ""column"": 9
-                        }
-                      ],
-                      ""path"": [
-                        ""nonNullNested"",
-                        ""nestedNonNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+  ""data"": null,
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
+      ""locations"": [
+        {
+          ""line"": 4,
+          ""column"": 9
         }
+      ],
+      ""path"": [
+        ""nonNullNested"",
+        ""nestedNonNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task Nested_Nullable_NonNull_and_nullable_should_produce_error()
-        {
-            /* Given */
-            var query = @"
+    [Fact]
+    public async Task Nested_Nullable_NonNull_and_nullable_should_produce_error()
+    {
+        /* Given */
+        var query = @"
 {
     nullable
     nullableNested {
@@ -115,127 +119,129 @@ public async Task Nested_Nullable_NonNull_and_nullable_should_produce_error()
     }
 }";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document =  Parser.ParseDocument(query)
-            }).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        }).ConfigureAwait(false);
 
 
-            /* Then */
-            result.ShouldMatchJson(@"
+        /* Then */
+        result.ShouldMatchJson(@"
                 {
-                  ""data"": {
-                    ""nullableNested"": null,
-                    ""nullable"": ""hello""
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 5,
-                          ""column"": 10
-                        }
-                      ],
-                      ""path"": [
-                        ""nullableNested"",
-                        ""nestedNonNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+  ""data"": {
+    ""nullable"": ""hello"",
+    ""nullableNested"": null
+  },
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
+      ""locations"": [
+        {
+          ""line"": 5,
+          ""column"": 10
         }
+      ],
+      ""path"": [
+        ""nullableNested"",
+        ""nestedNonNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task Nested_Nullable_NonNull_should_produce_error()
-        {
-            /* Given */
-            var query = @"
+    [Fact]
+    public async Task Nested_Nullable_NonNull_should_produce_error()
+    {
+        /* Given */
+        var query = @"
 {
     nullableNested {
        nestedNonNull 
     }
 }";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document =  Parser.ParseDocument(query)
-            }).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        }).ConfigureAwait(false);
 
 
-            /* Then */
-            result.ShouldMatchJson(@"
+        /* Then */
+        result.ShouldMatchJson(@"
                 {
-                  ""data"": {
-                    ""nullableNested"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 4,
-                          ""column"": 9
-                        }
-                      ],
-                      ""path"": [
-                        ""nullableNested"",
-                        ""nestedNonNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+  ""data"": {
+    ""nullableNested"": null
+  },
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Nest.nestedNonNull'."",
+      ""locations"": [
+        {
+          ""line"": 4,
+          ""column"": 9
         }
+      ],
+      ""path"": [
+        ""nullableNested"",
+        ""nestedNonNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
+    }
 
-        [Fact]
-        public async Task NonNull_should_produce_error()
-        {
-            /* Given */
-            var query = @"
+    [Fact]
+    public async Task NonNull_should_produce_error()
+    {
+        /* Given */
+        var query = @"
 {
     nonNull
 }";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document =  Parser.ParseDocument(query)
-            }).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        }).ConfigureAwait(false);
 
 
-            /* Then */
-            result.ShouldMatchJson(@"
+        /* Then */
+        result.ShouldMatchJson(@"
                 {
-                  ""data"": null,
-                  ""errors"": [
-                    {
-                      ""message"": ""Cannot return null for non-nullable field 'Query.nonNull'."",
-                      ""locations"": [
-                        {
-                          ""line"": 3,
-                          ""column"": 6
-                        }
-                      ],
-                      ""path"": [
-                        ""nonNull""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""NULLVALUEFORNONNULL""
-                      }
-                    }
-                  ]
-                }");
+  ""data"": null,
+  ""extensions"": null,
+  ""errors"": [
+    {
+      ""message"": ""Cannot return null for non-nullable field 'Query.nonNull'."",
+      ""locations"": [
+        {
+          ""line"": 3,
+          ""column"": 6
         }
+      ],
+      ""path"": [
+        ""nonNull""
+      ],
+      ""extensions"": {
+        ""code"": ""NULLVALUEFORNONNULLTYPE""
+      }
+    }
+  ]
+}");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Execution/TypeIsFacts.cs b/tests/graphql.tests/Execution/TypeIsFacts.cs
deleted file mode 100644
index 8a13350ac..000000000
--- a/tests/graphql.tests/Execution/TypeIsFacts.cs
+++ /dev/null
@@ -1,102 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Tests.Execution
-{
-    public class TypeIsFacts
-    {
-        [Theory]
-        [MemberData(nameof(ValidInputTypes))]
-        public void IsInputType(INamedType type)
-        {
-            /* Given */
-            /* When */
-            var isInput = TypeIs.IsInputType(type);
-            var isInputAsNonNull = TypeIs.IsInputType(
-                new NonNull(type));
-            var isInputAsList = TypeIs.IsInputType(
-                new List(type));
-
-            /* Then */
-            Assert.True(isInput);
-            Assert.True(isInputAsNonNull);
-            Assert.True(isInputAsList);
-        }
-
-        [Theory]      
-        [MemberData(nameof(ValidOutputTypes))]
-        public void IsOutputType(INamedType type)
-        {
-            /* Given */
-            /* When */
-            var isOutput = TypeIs.IsOutputType(type);
-            var isOutputAsNonNull = TypeIs.IsOutputType(
-                new NonNull(type));
-            var isOutputAsList = TypeIs.IsOutputType(
-                new List(type));
-
-            /* Then */
-            Assert.True(isOutput);
-            Assert.True(isOutputAsNonNull);
-            Assert.True(isOutputAsList);
-        }
-
-        public static IEnumerable<object[]> ValidInputTypes
-        {
-            get
-            {
-                foreach (var scalarType in ScalarType.Standard.Select(s => s.Type))
-                {
-                    yield return new object[] {scalarType};
-                }
-
-                yield return new object[]
-                {
-                    new EnumType("Enum",
-                        new EnumValues())
-                };
-
-                yield return new object[]
-                {
-                    new InputObjectType("Input")
-                };
-            }
-        }
-
-        public static IEnumerable<object[]> ValidOutputTypes
-        {
-            get
-            {
-                foreach (var scalarType in ScalarType.Standard.Select(s => s.Type))
-                {
-                    yield return new object[] {scalarType};
-                }
-
-                yield return new object[]
-                {
-                    new ObjectType("Object"), 
-                };
-
-                yield return new object[]
-                {
-                    new InterfaceType("Interface"), 
-                };
-
-                yield return new object[]
-                {
-                    new UnionType("Union",
-                        Enumerable.Empty<ObjectType>()), 
-                };
-
-                yield return new object[]
-                {
-                    new EnumType("Enum",
-                        new EnumValues())
-                };
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
index 3b90e1a04..01955b887 100644
--- a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
+++ b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
@@ -1,10 +1,8 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.Tests.Data;
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
-using static Tanka.GraphQL.Parser;
 
 // ReSharper disable InconsistentNaming
 
@@ -15,64 +13,64 @@ public class IntrospectSchemaFacts
         public IntrospectSchemaFacts()
         {
             var builder = new SchemaBuilder();
+            builder.Add(@"
 
-            builder.Interface("Interface", out var interface1,
-                    "Description")
-                .Connections(connect => connect
-                    .Field(interface1, ScalarFieldName, ScalarType.Int));
-
-            builder.Object(ObjectTypeName, out var type1,
-                    "Description",
-                    new[] {interface1})
-                .Connections(connect => connect
-                    .Field(type1, ScalarFieldName, ScalarType.NonNullInt,
-                        "Description",
-                        args: args => args.Arg("arg1", ScalarType.Float, 1d, "Description")));
-
-            builder.Object($"{ObjectTypeName}2", out var type2,
-                    "Description")
-                .Connections(connect => connect
-                    .Field(type2, ScalarFieldName, new List(ScalarType.Int)));
-
-
-            var union = new UnionType(
-                "Union",
-                new[] {type1, type2},
-                "Description");
-
-            builder.Include(union);
-
-            var enum1 = new EnumType(
-                "Enum",
-                new EnumValues
-                {
-                    {"value1", "Description"},
-                    {"value2", "Description", null, "Deprecated"}
-                },
-                "Description");
-
-            builder.Include(enum1);
-
-            builder.InputObject("InputObject", out var inputObject,
-                    "Description")
-                .Connections(connect => connect
-                    .InputField(inputObject, "field1", ScalarType.Boolean, true, "Description"));
-
-            builder.Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "object", type1)
-                    .Field(query, "union", union)
-                    .Field(query, "enum", enum1)
-                    .Field(query, "listOfObjects", new List(type2))
-                    .Field(query, "nonNullObject", new NonNull(type1))
-                    .Field(query, "inputObjectArg", ScalarType.NonNullBoolean,
-                        args: args => args.Arg("arg1", inputObject, default, "With inputObject arg")));
-
-            builder.Mutation(out var mutation);
-            builder.Subscription(out var subscription);
-
-            var sourceSchema = builder.Build();
-            _introspectionSchema = Introspect.Schema(sourceSchema);
+""""""Description""""""
+interface Interface 
+{
+    int: Int    
+}
+
+""""""Description""""""
+type Object implements Interface
+{
+    int: Int
+    """"""Description""""""
+    nonNullInt(arg1: Float = 1): Int!
+}
+
+type Object2 
+{
+    int: [Int]
+}
+
+""""""Description""""""
+union Union = Object | Object2
+
+""""""Description""""""
+enum Enum {
+    """"""Description""""""
+    VALUE1
+    
+    """"""Description""""""
+    VALUE2 @deprecated(reason: ""reason"")
+}
+
+""""""Description""""""
+input InputObject 
+{
+    """"""Description""""""
+    field1: Boolean = true
+}
+
+type Query {
+    object: Object
+    union: Union
+    enum: Enum
+    listOfObjects: [Object2]
+    nonNullObject: Object1!
+
+    """"""Description""""""
+    inputObjectArg(arg1: InputObject): Boolean!
+}
+
+type Mutation {}
+type Subscription {}
+");
+
+
+            var sourceSchema = builder.Build(new SchemaBuildOptions()).Result;
+            _introspectionSchema = Introspect.Schema(sourceSchema).Result;
         }
 
         private readonly ISchema _introspectionSchema;
@@ -85,7 +83,8 @@ private async Task<ExecutionResult> QueryAsync(string query)
             return await Executor.ExecuteAsync(new ExecutionOptions
             {
                 Schema = _introspectionSchema,
-                Document = ParseDocument(query)
+                Document = query,
+                IncludeExceptionDetails = true
             });
         }
 
@@ -105,22 +104,27 @@ public async Task Schema_directives()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__schema"": {
-                      ""directives"": [
-                        {
-                          ""name"": ""include""
-                        },
-                        {
-                          ""name"": ""skip""
-                        },
-                        {
-                          ""name"": ""deprecated""
-                        }
-                      ]
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__schema"": {
+      ""directives"": [
+        {
+          ""name"": ""deprecated""
+        },
+        {
+          ""name"": ""include""
+        },
+        {
+          ""name"": ""skip""
+        },
+        {
+          ""name"": ""specifiedBy""
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -173,55 +177,57 @@ public async Task Schema_types()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__schema"": {
-                      ""types"": [
-                        {
-                          ""name"": ""String""
-                        },
-                        {
-                          ""name"": ""Int""
-                        },
-                        {
-                          ""name"": ""Float""
-                        },
-                        {
-                          ""name"": ""Boolean""
-                        },
-                        {
-                          ""name"": ""ID""
-                        },
-                        {
-                          ""name"": ""Interface""
-                        },
-                        {
-                          ""name"": ""Object""
-                        },
-                        {
-                          ""name"": ""Object2""
-                        },
-                        {
-                          ""name"": ""Union""
-                        },
-                        {
-                          ""name"": ""Enum""
-                        },
-                        {
-                          ""name"": ""InputObject""
-                        },
-                        {
-                          ""name"": ""Query""
-                        },
-                        {
-                          ""name"": ""Mutation""
-                        },
-                        {
-                          ""name"": ""Subscription""
-                        }
-                      ]
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__schema"": {
+      ""types"": [
+        {
+          ""name"": ""Boolean""
+        },
+        {
+          ""name"": ""Enum""
+        },
+        {
+          ""name"": ""Float""
+        },
+        {
+          ""name"": ""ID""
+        },
+        {
+          ""name"": ""InputObject""
+        },
+        {
+          ""name"": ""Int""
+        },
+        {
+          ""name"": ""Interface""
+        },
+        {
+          ""name"": ""Mutation""
+        },
+        {
+          ""name"": ""Object""
+        },
+        {
+          ""name"": ""Object2""
+        },
+        {
+          ""name"": ""Query""
+        },
+        {
+          ""name"": ""String""
+        },
+        {
+          ""name"": ""Subscription""
+        },
+        {
+          ""name"": ""Union""
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -245,54 +251,68 @@ public async Task Type_DirectiveType()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__schema"": {
-                      ""directives"": [
-                        {
-                          ""locations"": [
-                            ""FIELD"",
-                            ""FRAGMENT_SPREAD"",
-                            ""INLINE_FRAGMENT""
-                          ],
-                          ""description"": """",
-                          ""name"": ""include"",
-                          ""args"": [
-                            {
-                              ""name"": ""if""
-                            }
-                          ]
-                        },
-                        {
-                          ""locations"": [
-                            ""FIELD"",
-                            ""FRAGMENT_SPREAD"",
-                            ""INLINE_FRAGMENT""
-                          ],
-                          ""description"": """",
-                          ""name"": ""skip"",
-                          ""args"": [
-                            {
-                              ""name"": ""if""
-                            }
-                          ]
-                        },
-                        {
-                          ""name"": ""deprecated"",
-                          ""description"": """",
-                          ""locations"": [
-                            ""FIELD_DEFINITION"",
-                            ""ENUM_VALUE""
-                          ],
-                          ""args"": [
-                            {
-                              ""name"": ""reason""
-                            }
-                          ]
-                        }
-                      ]
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__schema"": {
+      ""directives"": [
+        {
+          ""name"": ""deprecated"",
+          ""description"": null,
+          ""locations"": [
+            ""FIELD_DEFINITION"",
+            ""ENUM_VALUE""
+          ],
+          ""args"": [
+            {
+              ""name"": ""reason""
+            }
+          ]
+        },
+        {
+          ""name"": ""include"",
+          ""description"": null,
+          ""locations"": [
+            ""FIELD"",
+            ""FRAGMENT_SPREAD"",
+            ""INLINE_FRAGMENT""
+          ],
+          ""args"": [
+            {
+              ""name"": ""if""
+            }
+          ]
+        },
+        {
+          ""name"": ""skip"",
+          ""description"": null,
+          ""locations"": [
+            ""FIELD"",
+            ""FRAGMENT_SPREAD"",
+            ""INLINE_FRAGMENT""
+          ],
+          ""args"": [
+            {
+              ""name"": ""if""
+            }
+          ]
+        },
+        {
+          ""name"": ""specifiedBy"",
+          ""description"": null,
+          ""locations"": [
+            ""SCALAR""
+          ],
+          ""args"": [
+            {
+              ""name"": ""url""
+            }
+          ]
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -320,22 +340,24 @@ public async Task Type_EnumType()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""description"": ""Description"",
-                      ""name"": ""Enum"",
-                      ""enumValues"": [
-                        {
-                          ""description"": ""Description"",
-                          ""name"": ""VALUE1"",
-                          ""isDeprecated"": false,
-                          ""deprecationReason"": null
-                        }
-                      ],
-                      ""kind"": ""ENUM""
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""kind"": ""ENUM"",
+      ""name"": ""Enum"",
+      ""description"": ""Description"",
+      ""enumValues"": [
+        {
+          ""name"": ""VALUE1"",
+          ""description"": ""Description"",
+          ""isDeprecated"": false,
+          ""deprecationReason"": null
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -362,28 +384,30 @@ public async Task Type_EnumType_include_deprecated()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""name"": ""Enum"",
-                      ""enumValues"": [
-                        {
-                          ""isDeprecated"": false,
-                          ""name"": ""VALUE1"",
-                          ""description"": ""Description"",
-                          ""deprecationReason"": null
-                        },
-                        {
-                          ""isDeprecated"": true,
-                          ""name"": ""VALUE2"",
-                          ""description"": ""Description"",
-                          ""deprecationReason"": ""Deprecated""
-                        }
-                      ],
-                      ""description"": ""Description"",
-                      ""kind"": ""ENUM""
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""kind"": ""ENUM"",
+      ""name"": ""Enum"",
+      ""description"": ""Description"",
+      ""enumValues"": [
+        {
+          ""name"": ""VALUE1"",
+          ""description"": ""Description"",
+          ""isDeprecated"": false,
+          ""deprecationReason"": null
+        },
+        {
+          ""name"": ""VALUE2"",
+          ""description"": ""Description"",
+          ""isDeprecated"": true,
+          ""deprecationReason"": ""reason""
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -404,14 +428,16 @@ public async Task Type_InputObjectType()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""name"": ""InputObject"",
-                      ""description"": ""Description"",
-                      ""kind"": ""INPUT_OBJECT""
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""kind"": ""INPUT_OBJECT"",
+      ""name"": ""InputObject"",
+      ""description"": ""Description""
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -513,24 +539,29 @@ public async Task Type_ObjectType()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""interfaces"": [
-                        {
-                          ""name"": ""Interface""
-                        }
-                      ],
-                      ""fields"": [
-                        {
-                          ""name"": ""int""
-                        }
-                      ],
-                      ""kind"": ""OBJECT"",
-                      ""description"": ""Description"",
-                      ""name"": ""Object""
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""kind"": ""OBJECT"",
+      ""name"": ""Object"",
+      ""description"": ""Description"",
+      ""fields"": [
+        {
+          ""name"": ""int""
+        },
+        {
+          ""name"": ""nonNullInt""
+        }
+      ],
+      ""interfaces"": [
+        {
+          ""name"": ""Interface""
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -556,31 +587,45 @@ public async Task Type_ObjectType_fields()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""fields"": [
-                        {
-                          ""description"": ""Description"",
-                          ""name"": ""int"",
-                          ""isDeprecated"": false,
-                          ""args"": [
-                            {
-                              ""name"": ""arg1""
-                            }
-                          ],
-                          ""deprecationReason"": null,
-                          ""type"": {
-                            ""name"": null,
-                            ""kind"": ""NON_NULL"",
-                            ""ofType"": {
-                              ""name"": ""Int""
-                            }
-                          }
-                        }
-                      ]
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""fields"": [
+        {
+          ""name"": ""int"",
+          ""description"": null,
+          ""isDeprecated"": false,
+          ""deprecationReason"": null,
+          ""type"": {
+            ""name"": ""Int"",
+            ""kind"": ""SCALAR"",
+            ""ofType"": null
+          },
+          ""args"": []
+        },
+        {
+          ""name"": ""nonNullInt"",
+          ""description"": ""Description"",
+          ""isDeprecated"": false,
+          ""deprecationReason"": null,
+          ""type"": {
+            ""name"": null,
+            ""kind"": ""NON_NULL"",
+            ""ofType"": {
+              ""name"": ""Int""
+            }
+          },
+          ""args"": [
+            {
+              ""name"": ""arg1""
+            }
+          ]
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -606,25 +651,30 @@ public async Task Type_ObjectType_fields_args()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""fields"": [
-                        {
-                          ""args"": [
-                            {
-                              ""name"": ""arg1"",
-                              ""defaultValue"": ""1"",
-                              ""type"": {
-                                ""name"": ""Float""
-                              },
-                              ""description"": ""Description""
-                            }
-                          ]
-                        }
-                      ]
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""fields"": [
+        {
+          ""args"": []
+        },
+        {
+          ""args"": [
+            {
+              ""name"": ""arg1"",
+              ""description"": null,
+              ""type"": {
+                ""name"": ""Float""
+              },
+              ""defaultValue"": ""1""
+            }
+          ]
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -674,22 +724,24 @@ public async Task Type_UnionType()
             /* Then */
             result.ShouldMatchJson(
                 @"{
-                  ""data"": {
-                    ""__type"": {
-                      ""kind"": ""UNION"",
-                      ""description"": ""Description"",
-                      ""possibleTypes"": [
-                        {
-                          ""name"": ""Object""
-                        },
-                        {
-                          ""name"": ""Object2""
-                        }
-                      ],
-                      ""name"": ""Union""
-                    }
-                  }
-                }");
+  ""data"": {
+    ""__type"": {
+      ""kind"": ""UNION"",
+      ""name"": ""Union"",
+      ""description"": ""Description"",
+      ""possibleTypes"": [
+        {
+          ""name"": ""Object""
+        },
+        {
+          ""name"": ""Object2""
+        }
+      ]
+    }
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ValueResolution/InterfaceCompletionFacts.cs b/tests/graphql.tests/ValueResolution/InterfaceCompletionFacts.cs
index 0171b11a7..a8b6810de 100644
--- a/tests/graphql.tests/ValueResolution/InterfaceCompletionFacts.cs
+++ b/tests/graphql.tests/ValueResolution/InterfaceCompletionFacts.cs
@@ -1,110 +1,141 @@
-using System.Collections.Generic;
-using System.Threading.Tasks;
-
+using System.Threading.Tasks;
 using NSubstitute;
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.ValueResolution
+namespace Tanka.GraphQL.Tests.ValueResolution;
+
+public class InterfaceCompletionFacts
 {
-    public class InterfaceCompletionFacts
+    [Fact]
+    public async Task Should_fail_if_no_ActualType_given()
+    {
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+interface Character
+
+type Human
+
+type Query
+").Build(new SchemaBuildOptions());
+        InterfaceDefinition character = "interface Character";
+        var value = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Character");
+
+
+        var sut = new CompleteValueResult(value, null);
+
+        /* When */
+        var exception =
+            await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
+
+        /* Then */
+        Assert.Equal(
+            "Cannot complete value for field 'field: Character'. ActualType is required for interface values.",
+            exception.Message);
+    }
+
+    [Fact]
+    public async Task Should_fail_if_ActualType_is_not_possible()
+    {
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+interface Character
+
+type Human
+
+type Query
+").Build(new SchemaBuildOptions());
+        InterfaceDefinition character = "interface Character";
+        ObjectDefinition humanNotCharacter = "type Human";
+        var value = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Character");
+
+
+        var sut = new CompleteValueResult(value, humanNotCharacter);
+
+        /* When */
+        var exception =
+            await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
+
+        /* Then */
+        Assert.Equal(
+            "Cannot complete value for field 'field: Character'. ActualType 'Human' does not implement interface 'Character'",
+            exception.Message);
+    }
+
+    [Fact]
+    public async Task Should_complete_value()
+    {
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+interface Character
+
+type Human implements Character
+
+type Query
+").Build(new SchemaBuildOptions());
+        ObjectDefinition humanCharacter = "type Human implements Character";
+        var mockValue = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
+        context.Path.Returns(new NodePath());
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Character");
+
+
+        var sut = new CompleteValueResult(mockValue, humanCharacter);
+
+        /* When */
+        var value = await sut.CompleteValueAsync(context);
+
+        /* Then */
+        Assert.NotNull(value);
+    }
+
+    [Fact]
+    public async Task Should_complete_list_of_values()
     {
-        [Fact]
-        public async Task Should_fail_if_no_ActualType_given()
-        {
-            /* Given */
-            var character = new InterfaceType("Character");
-            var value = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(character));
-
-
-            var sut = new CompleteValueResult(value, null);
-
-            /* When */
-            var exception =
-                await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
-
-            /* Then */
-            Assert.Equal(
-                "Cannot complete value for field 'field':'Character'. ActualType is required for interface values.",
-                exception.Message);
-        }
-
-        [Fact]
-        public async Task Should_fail_if_ActualType_is_not_possible()
-        {
-            /* Given */
-            var character = new InterfaceType("Character");
-            var humanNotCharacter = new ObjectType("Human");
-            var value = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(character));
-
-
-            var sut = new CompleteValueResult(value, humanNotCharacter);
-
-            /* When */
-            var exception =
-                await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
-
-            /* Then */
-            Assert.Equal(
-                "Cannot complete value for field 'field':'Character'. ActualType 'Human' does not implement interface 'Character'",
-                exception.Message);
-        }
-
-        [Fact]
-        public async Task Should_complete_value()
-        {
-            /* Given */
-            var character = new InterfaceType("Character");
-            var humanCharacter = new ObjectType("Human", implements: new[] {character});
-            var mockValue = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.ExecutionContext.Schema.Returns(Substitute.For<ISchema>());
-            context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
-            context.Path.Returns(new NodePath());
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(character));
-
-
-            var sut = new CompleteValueResult(mockValue, humanCharacter);
-
-            /* When */
-            var value = await sut.CompleteValueAsync(context);
-
-            /* Then */
-            Assert.NotNull(value);
-        }
-
-        [Fact]
-        public async Task Should_complete_list_of_values()
-        {
-            /* Given */
-            var character = new InterfaceType("Character");
-            var humanCharacter = new ObjectType("Human", implements: new[] {character});
-            var mockValue = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.ExecutionContext.Schema.Returns(Substitute.For<ISchema>());
-            context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
-            context.Path.Returns(new NodePath());
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(character));
-
-
-            var sut = new CompleteValueResult(new[] {mockValue}, _ => humanCharacter);
-
-            /* When */
-            var value = await sut.CompleteValueAsync(context);
-
-            /* Then */
-            Assert.NotNull(value);
-        }
+        /* Given */
+        ObjectDefinition humanCharacter = "type Human implements Character";
+        var schema = await new SchemaBuilder()
+            .Add(@"
+interface Character
+
+type Human implements Character
+
+type Query
+").Build(new SchemaBuildOptions());
+
+        var mockValue = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
+        context.Path.Returns(new NodePath());
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Character");
+
+
+        var sut = new CompleteValueResult(new[] { mockValue }, (_, _) => humanCharacter);
+
+        /* When */
+        var value = await sut.CompleteValueAsync(context);
+
+        /* Then */
+        Assert.NotNull(value);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ValueResolution/ResolverBuilderFacts.cs b/tests/graphql.tests/ValueResolution/ResolverBuilderFacts.cs
index fe58fecaa..a998c24ef 100644
--- a/tests/graphql.tests/ValueResolution/ResolverBuilderFacts.cs
+++ b/tests/graphql.tests/ValueResolution/ResolverBuilderFacts.cs
@@ -1,121 +1,119 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.ValueResolution
+namespace Tanka.GraphQL.Tests.ValueResolution;
+
+public class ResolverBuilderFacts
 {
-    public class ResolverBuilderFacts
+    [Fact]
+    public async Task Should_chain_in_order1()
     {
-        [Fact]
-        public async Task Should_chain_in_order1()
+        /* Given */
+        var values = new List<int>();
+        var builder = new ResolverBuilder();
+        builder.Use((context, next) =>
         {
-            /* Given */
-            var values = new List<int>();
-            var builder = new ResolverBuilder();
-            builder.Use((context, next) =>
-            {
-                values.Add(0);
-                return next(context);
-            });
-
-            builder.Use((context, next) =>
-            {
-                values.Add(1);
-                return next(context);
-            });
-
-            builder.Use((context, next) =>
-            {
-                values.Add(2);
-                return next(context);
-            });
-
-            builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
-
-            /* When */
-            var resolver = builder.Build();
-            await resolver(null);
-
-            /* Then */
-            Assert.Equal(new[] {0, 1, 2}, values.ToArray());
-        }
-
-        [Fact]
-        public async Task Should_chain_in_order2()
+            values.Add(0);
+            return next(context);
+        });
+
+        builder.Use((context, next) =>
         {
-            /* Given */
-            var values = new List<int>();
-            var builder = new ResolverBuilder();
-            builder.Use((context, next) =>
-            {
-                values.Add(0);
-                return next(context);
-            });
-
-            builder.Use((context, next) =>
-            {
-                var result = next(context);
-                values.Add(1);
-                return result;
-            });
-
-            builder.Use((context, next) =>
-            {
-                values.Add(2);
-                return next(context);
-            });
-
-            builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
-
-            /* When */
-            var resolver = builder.Build();
-            await resolver(null);
-
-            /* Then */
-            Assert.Equal(new[] {0, 2, 1}, values.ToArray());
-        }
-
-        [Fact]
-        public async Task Should_propagate_resolved_value()
+            values.Add(1);
+            return next(context);
+        });
+
+        builder.Use((context, next) =>
         {
-            /* Given */
-            var builder = new ResolverBuilder();
-            builder
-                .Use((context, next) => next(context))
-                .Use((context, next) => next(context))
-                .Use((context, next) => next(context));
+            values.Add(2);
+            return next(context);
+        });
 
-            builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
+        builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
 
-            /* When */
-            var resolver = builder.Build();
-            var result = await resolver(null);
+        /* When */
+        var resolver = builder.Build();
+        await resolver(null);
 
-            /* Then */
-            Assert.Equal(42, result.Value);
-        }
+        /* Then */
+        Assert.Equal(new[] { 0, 1, 2 }, values.ToArray());
+    }
+
+    [Fact]
+    public async Task Should_chain_in_order2()
+    {
+        /* Given */
+        var values = new List<int>();
+        var builder = new ResolverBuilder();
+        builder.Use((context, next) =>
+        {
+            values.Add(0);
+            return next(context);
+        });
 
-        [Fact]
-        public void Should_not_call_chain_until_resolver_executed()
+        builder.Use((context, next) =>
         {
-            /* Given */
-            var values = new List<int>();
-            var builder = new ResolverBuilder();
-            builder.Use((context, next) =>
-            {
-                values.Add(0);
-                return next(context);
-            });
-
-            builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
-
-            /* When */
-            builder.Build();
-
-            /* Then */
-            Assert.Equal(new int[] {}, values.ToArray());
-        }
+            var result = next(context);
+            values.Add(1);
+            return result;
+        });
+
+        builder.Use((context, next) =>
+        {
+            values.Add(2);
+            return next(context);
+        });
+
+        builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
+
+        /* When */
+        var resolver = builder.Build();
+        await resolver(null);
+
+        /* Then */
+        Assert.Equal(new[] { 0, 2, 1 }, values.ToArray());
+    }
+
+    [Fact]
+    public async Task Should_propagate_resolved_value()
+    {
+        /* Given */
+        var builder = new ResolverBuilder();
+        builder
+            .Use((context, next) => next(context))
+            .Use((context, next) => next(context))
+            .Use((context, next) => next(context));
+
+        builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
+
+        /* When */
+        var resolver = builder.Build();
+        var result = await resolver(null);
+
+        /* Then */
+        Assert.Equal(42, result.Value);
+    }
+
+    [Fact]
+    public void Should_not_call_chain_until_resolver_executed()
+    {
+        /* Given */
+        var values = new List<int>();
+        var builder = new ResolverBuilder();
+        builder.Use((context, next) =>
+        {
+            values.Add(0);
+            return next(context);
+        });
+
+        builder.Run(context => new ValueTask<IResolverResult>(Resolve.As(42)));
+
+        /* When */
+        builder.Build();
+
+        /* Then */
+        Assert.Equal(new int[] { }, values.ToArray());
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ValueResolution/ResolverContextFacts.cs b/tests/graphql.tests/ValueResolution/ResolverContextFacts.cs
index f0eab76ca..c2345da62 100644
--- a/tests/graphql.tests/ValueResolution/ResolverContextFacts.cs
+++ b/tests/graphql.tests/ValueResolution/ResolverContextFacts.cs
@@ -1,285 +1,283 @@
 using System.Collections.Generic;
 using System.Linq;
-
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.ValueResolution
+namespace Tanka.GraphQL.Tests.ValueResolution;
+
+public class ResolverContextFacts
 {
-    public class ResolverContextFacts
+    private readonly FieldDefinition _field;
+    private readonly ObjectDefinition _objectType;
+    private readonly object _objectValue;
+    private readonly ISchema _schema;
+    private readonly FieldSelection _selection;
+    private IReadOnlyCollection<FieldSelection> _fields;
+
+    public ResolverContextFacts()
     {
-        public ResolverContextFacts()
-        {
-            _objectType = new ObjectType("Test");
-            _objectValue = null;
-            _field = new Field(ScalarType.ID);
-            _selection = new FieldSelection(null, "test", null, null, null, null);
-            _schema = new SchemaBuilder()
-                .Query(out _)
-                .Build();
-        }
-
-        private readonly IField _field;
-        private readonly ObjectType _objectType;
-        private readonly object _objectValue;
-        private readonly FieldSelection _selection;
-        private readonly ISchema _schema;
-        private IReadOnlyCollection<FieldSelection> _fields;
-
-        private class InputArg : IReadFromObjectDictionary
-        {
-            public string Name { get; private set; }
-
-            public void Read(IReadOnlyDictionary<string, object> source)
-            {
-                Name = source.GetValue<string>("name");
-            }
-        }
+        _objectType = "type Test";
+        _objectValue = null;
+        _field = "test: ID";
+        _selection = new FieldSelection(null, "test", null, null, null);
+        _schema = new SchemaBuilder()
+            .Add("type Query")
+            .Build(new SchemaBuildOptions()).Result;
+    }
 
-        [Fact]
-        public void Get_double_argument()
+    [Fact]
+    public void Get_double_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
-            {
-                {"double", 100.1D}
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetArgument<double>("double");
-
-            /* Then */
-            Assert.Equal(100.1D, value);
-        }
+            { "double", 100.1D }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetArgument<double>("double");
+
+        /* Then */
+        Assert.Equal(100.1D, value);
+    }
 
-        [Fact]
-        public void Get_float_argument()
+    [Fact]
+    public void Get_float_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
-            {
-                {"float", 100.1F}
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetArgument<float>("float");
-
-            /* Then */
-            Assert.Equal(100.1F, value);
-        }
+            { "float", 100.1F }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetArgument<float>("float");
+
+        /* Then */
+        Assert.Equal(100.1F, value);
+    }
 
-        [Fact]
-        public void Get_int_argument()
+    [Fact]
+    public void Get_int_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
-            {
-                {"int", 101}
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetArgument<int>("int");
-
-            /* Then */
-            Assert.Equal(101, value);
-        }
+            { "int", 101 }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetArgument<int>("int");
+
+        /* Then */
+        Assert.Equal(101, value);
+    }
 
-        [Fact]
-        public void Get_long_argument()
+    [Fact]
+    public void Get_long_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
-            {
-                {"long", 100L}
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetArgument<long>("long");
-
-            /* Then */
-            Assert.Equal(100L, value);
-        }
+            { "long", 100L }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetArgument<long>("long");
+
+        /* Then */
+        Assert.Equal(100L, value);
+    }
 
-        [Fact]
-        public void Get_object_argument()
+    [Fact]
+    public void Get_object_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
             {
+                "input", new Dictionary<string, object>
                 {
-                    "input", new Dictionary<string, object>
-                    {
-                        {"name", "inputArg"}
-                    }
+                    { "name", "inputArg" }
                 }
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetObjectArgument<InputArg>("input");
-
-            /* Then */
-            Assert.Equal("inputArg", value.Name);
-        }
+            }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetObjectArgument<InputArg>("input");
+
+        /* Then */
+        Assert.Equal("inputArg", value.Name);
+    }
 
-        [Fact]
-        public void Get_InputObject_List_argument()
+    [Fact]
+    public void Get_InputObject_List_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
             {
+                "inputs", new[]
                 {
-                    "inputs", new []
+                    new Dictionary<string, object>
                     {
-                        new Dictionary<string, object>
-                        {
-                            {"name", "1"}
-                        },
-                        new Dictionary<string, object>
-                        {
-                            {"name", "2"}
-                        }
+                        { "name", "1" }
+                    },
+                    new Dictionary<string, object>
+                    {
+                        { "name", "2" }
                     }
                 }
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetObjectArgumentList<InputArg>("inputs");
-
-            /* Then */
-            Assert.Single(value, v => v.Name == "1");
-            Assert.Single(value, v => v.Name == "2");
-        }
+            }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetObjectArgumentList<InputArg>("inputs");
+
+        /* Then */
+        Assert.Single(value, v => v.Name == "1");
+        Assert.Single(value, v => v.Name == "2");
+    }
 
-        [Fact]
-        public void Get_InputObject_List_argument_with_null()
+    [Fact]
+    public void Get_InputObject_List_argument_with_null()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
             {
+                "inputs", new[]
                 {
-                    "inputs", new []
+                    new Dictionary<string, object>
                     {
-                        new Dictionary<string, object>
-                        {
-                            {"name", "1"}
-                        },
-                        null,
-                        new Dictionary<string, object>
-                        {
-                            {"name", "2"}
-                        }
+                        { "name", "1" }
+                    },
+                    null,
+                    new Dictionary<string, object>
+                    {
+                        { "name", "2" }
                     }
                 }
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetObjectArgumentList<InputArg?>("inputs")
-                .ToList();
-
-            /* Then */
-            Assert.Single(value, v => v?.Name == "1");
-            Assert.Single(value, v => v?.Name == "2");
-            Assert.Single(value, v => v is null);
-        }
+            }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetObjectArgumentList<InputArg?>("inputs")
+            .ToList();
+
+        /* Then */
+        Assert.Single(value, v => v?.Name == "1");
+        Assert.Single(value, v => v?.Name == "2");
+        Assert.Single(value, v => v is null);
+    }
 
-        [Fact]
-        public void Get_string_argument()
+    [Fact]
+    public void Get_string_argument()
+    {
+        /* Given */
+        var arguments = new Dictionary<string, object>
         {
-            /* Given */
-            var arguments = new Dictionary<string, object>
-            {
-                {"string", "101"}
-            };
-
-            var sut = new ResolverContext(
-                _objectType,
-                _objectValue,
-                _field,
-                _selection,
-                _fields,
-                arguments,
-                new NodePath(),
-                null);
-
-            /* When */
-            var value = sut.GetArgument<string>("string");
-
-            /* Then */
-            Assert.Equal("101", value);
+            { "string", "101" }
+        };
+
+        var sut = new ResolverContext(
+            _objectType,
+            _objectValue,
+            _field,
+            _selection,
+            _fields,
+            arguments,
+            new NodePath(),
+            null);
+
+        /* When */
+        var value = sut.GetArgument<string>("string");
+
+        /* Then */
+        Assert.Equal("101", value);
+    }
+
+    private class InputArg : IReadFromObjectDictionary
+    {
+        public string Name { get; private set; }
+
+        public void Read(IReadOnlyDictionary<string, object> source)
+        {
+            Name = source.GetValue<string>("name");
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ValueResolution/SchemaDirectiveExecutorFacts.cs b/tests/graphql.tests/ValueResolution/SchemaDirectiveExecutorFacts.cs
deleted file mode 100644
index 2b5d4d923..000000000
--- a/tests/graphql.tests/ValueResolution/SchemaDirectiveExecutorFacts.cs
+++ /dev/null
@@ -1,3 +0,0 @@
-namespace Tanka.GraphQL.Tests.ValueResolution
-{
-}
\ No newline at end of file
diff --git a/tests/graphql.tests/ValueResolution/UnionCompletionFacts.cs b/tests/graphql.tests/ValueResolution/UnionCompletionFacts.cs
index d05220b7b..6a15bc144 100644
--- a/tests/graphql.tests/ValueResolution/UnionCompletionFacts.cs
+++ b/tests/graphql.tests/ValueResolution/UnionCompletionFacts.cs
@@ -1,110 +1,136 @@
-using System.Collections.Generic;
-using System.Threading.Tasks;
-
+using System.Threading.Tasks;
 using NSubstitute;
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.ValueResolution
+namespace Tanka.GraphQL.Tests.ValueResolution;
+
+public class UnionCompletionFacts
 {
-    public class UnionCompletionFacts
+    [Fact]
+    public async Task Should_fail_if_no_ActualType_given()
+    {
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+type Success
+type Failure
+union Result = Success | Failure
+type Query
+"
+            ).Build(new SchemaBuildOptions());
+        var value = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Result");
+
+
+        var sut = new CompleteValueResult(value, null);
+
+        /* When */
+        var exception =
+            await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
+
+        /* Then */
+        Assert.Equal("Cannot complete value for field 'field: Result'. ActualType is required for union values.",
+            exception.Message);
+    }
+
+    [Fact]
+    public async Task Should_fail_if_ActualType_is_not_possible()
+    {
+        /* Given */
+        ObjectDefinition notPossible = "type NotPossible";
+        var schema = await new SchemaBuilder()
+            .Add(@"
+type Success
+type Failure
+union Result = Success | Failure
+type Query
+"
+            ).Build(new SchemaBuildOptions());
+        var value = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Result");
+
+
+        var sut = new CompleteValueResult(value, notPossible);
+
+        /* When */
+        var exception =
+            await Assert.ThrowsAsync<CompleteValueException>(() => sut.CompleteValueAsync(context).AsTask());
+
+        /* Then */
+        Assert.Equal(
+            "Cannot complete value for field 'field: Result'. ActualType 'NotPossible' is not possible for 'Result'",
+            exception.Message);
+    }
+
+    [Fact]
+    public async Task Should_complete_value()
+    {
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+type Success
+type Failure
+union Result = Success | Failure
+type Query
+"
+            ).Build(new SchemaBuildOptions());
+        var mockValue = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
+        context.Path.Returns(new NodePath());
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Result");
+
+
+        var sut = new CompleteValueResult(mockValue, "type Success");
+
+        /* When */
+        var value = await sut.CompleteValueAsync(context);
+
+        /* Then */
+        Assert.NotNull(value);
+    }
+
+    [Fact]
+    public async Task Should_complete_list_of_values()
     {
-        [Fact]
-        public async Task Should_fail_if_no_ActualType_given()
-        {
-            /* Given */
-            var success = new ObjectType("Success");
-            var error = new ObjectType("Error");
-            var result = new UnionType("Result", new []{success, error});
-            var value = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(result));
-
-
-            var sut = new CompleteValueResult(value, null);
-
-            /* When */
-            var exception = await Assert.ThrowsAsync<CompleteValueException>(()=> sut.CompleteValueAsync(context).AsTask());
-
-            /* Then */
-            Assert.Equal("Cannot complete value for field 'field':'Result'. ActualType is required for union values.", exception.Message);
-        }
-
-        [Fact]
-        public async Task Should_fail_if_ActualType_is_not_possible()
-        {
-            /* Given */
-            var notPossible = new ObjectType("NotPossible");
-            var success = new ObjectType("Success");
-            var error = new ObjectType("Error");
-            var result = new UnionType("Result", new []{success, error});
-            var value = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(result));
-
-
-            var sut = new CompleteValueResult(value, notPossible);
-
-            /* When */
-            var exception = await Assert.ThrowsAsync<CompleteValueException>(()=> sut.CompleteValueAsync(context).AsTask());
-
-            /* Then */
-            Assert.Equal("Cannot complete value for field 'field':'Result'. ActualType 'NotPossible' is not possible for 'Result'", exception.Message);
-        }
-
-        [Fact]
-        public async Task Should_complete_value()
-        {
-            /* Given */
-            var success = new ObjectType("Success");
-            var error = new ObjectType("Error");
-            var result = new UnionType("Result", new []{success, error});
-            var mockValue = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.ExecutionContext.Schema.Returns(Substitute.For<ISchema>());
-            context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
-            context.Path.Returns(new NodePath());
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(result));
-
-
-            var sut = new CompleteValueResult(mockValue, success);
-
-            /* When */
-            var value = await sut.CompleteValueAsync(context);
-
-            /* Then */
-            Assert.NotNull(value);
-        }
-
-        [Fact]
-        public async Task Should_complete_list_of_values()
-        {
-            /* Given */
-            var success = new ObjectType("Success");
-            var error = new ObjectType("Error");
-            var result = new UnionType("Result", new []{success, error});
-            var mockValue = new object();
-            var context = Substitute.For<IResolverContext>();
-            context.ExecutionContext.Schema.Returns(Substitute.For<ISchema>());
-            context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
-            context.Path.Returns(new NodePath());
-            context.FieldName.Returns("field");
-            context.Field.Returns(new Field(result));
-
-
-            var sut = new CompleteValueResult(new [] {mockValue} , _ => success);
-
-            /* When */
-            var value = await sut.CompleteValueAsync(context);
-
-            /* Then */
-            Assert.NotNull(value);
-        }
+        /* Given */
+        var schema = await new SchemaBuilder()
+            .Add(@"
+type Success
+type Failure
+union Result = Success | Failure
+type Query
+"
+            ).Build(new SchemaBuildOptions());
+
+        var mockValue = new object();
+        var context = Substitute.For<IResolverContext>();
+        context.ExecutionContext.Schema.Returns(schema);
+        context.ExecutionContext.Document.Returns(new ExecutableDocument(null, null));
+        context.Path.Returns(new NodePath());
+        context.FieldName.Returns("field");
+        context.Field.Returns("field: Result");
+
+
+        var sut = new CompleteValueResult(new[] { mockValue }, (_, _) => "type Success");
+
+        /* When */
+        var value = await sut.CompleteValueAsync(context);
+
+        /* Then */
+        Assert.NotNull(value);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index 1b8df810a..a5ce29740 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -11,33 +11,24 @@
     <Compile Remove="Analysis\**" />
     <Compile Remove="Bug\**" />
     <Compile Remove="Descriptions\**" />
-    <Compile Remove="Execution\**" />
     <Compile Remove="Extensions\**" />
-    <Compile Remove="Introspection\**" />
     <Compile Remove="Tools\**" />
     <Compile Remove="TypeSystem\**" />
     <Compile Remove="Validation\**" />
-    <Compile Remove="ValueResolution\**" />
     <EmbeddedResource Remove="Analysis\**" />
     <EmbeddedResource Remove="Bug\**" />
     <EmbeddedResource Remove="Descriptions\**" />
-    <EmbeddedResource Remove="Execution\**" />
     <EmbeddedResource Remove="Extensions\**" />
-    <EmbeddedResource Remove="Introspection\**" />
     <EmbeddedResource Remove="Tools\**" />
     <EmbeddedResource Remove="TypeSystem\**" />
     <EmbeddedResource Remove="Validation\**" />
-    <EmbeddedResource Remove="ValueResolution\**" />
     <None Remove="Analysis\**" />
     <None Remove="Bug\**" />
     <None Remove="Descriptions\**" />
-    <None Remove="Execution\**" />
     <None Remove="Extensions\**" />
-    <None Remove="Introspection\**" />
     <None Remove="Tools\**" />
     <None Remove="TypeSystem\**" />
     <None Remove="Validation\**" />
-    <None Remove="ValueResolution\**" />
   </ItemGroup>
 
   <ItemGroup>
@@ -46,6 +37,10 @@
     <Compile Remove="SubscriptionsFacts.cs" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Include="Bug\Bug_339.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />

From b3cc93412bbe9d96f4d9cf8a5f4a67898821a5bf Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Thu, 10 Feb 2022 20:09:04 +0200
Subject: [PATCH 04/26] Cost directive

---
 .../Extensions/DirectiveExtensions.cs         |  46 ++-
 src/graphql/Extensions/Analysis/Cost.cs       | 138 ++++----
 .../FieldSelectionMergingValidator.cs         |  50 +--
 src/graphql/Validation/TypeTracker.cs         |  36 +-
 src/graphql/graphql.csproj                    |   5 +
 tests/graphql.tests/Analysis/CostFacts.cs     | 315 +++++++++---------
 tests/graphql.tests/graphql.tests.csproj      |   3 -
 7 files changed, 321 insertions(+), 272 deletions(-)

diff --git a/src/graphql.language/Extensions/DirectiveExtensions.cs b/src/graphql.language/Extensions/DirectiveExtensions.cs
index 4faa6fa29..64ec8374a 100644
--- a/src/graphql.language/Extensions/DirectiveExtensions.cs
+++ b/src/graphql.language/Extensions/DirectiveExtensions.cs
@@ -1,26 +1,40 @@
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class DirectiveExtensions
 {
-    public static class DirectiveExtensions
+    public static bool TryGetArgument(
+        this Directive definition,
+        Name argumentName,
+        [NotNullWhen(true)] out Argument? argument)
     {
-        public static Directive WithName(this Directive directive,
-            in Name name)
+        if (definition.Arguments is null)
         {
-            return new Directive(
-                name,
-                directive.Arguments,
-                directive.Location);
+            argument = null;
+            return false;
         }
 
-        public static Directive WithArguments(this Directive directive,
-            IReadOnlyList<Argument> arguments)
-        {
-            return new Directive(
-                directive.Name,
-                new Arguments(arguments),
-                directive.Location);
-        }
+        return definition.Arguments.TryGet(argumentName, out argument);
+    }
+
+    public static Directive WithName(this Directive directive,
+        in Name name)
+    {
+        return new Directive(
+            name,
+            directive.Arguments,
+            directive.Location);
+    }
+
+    public static Directive WithArguments(this Directive directive,
+        IReadOnlyList<Argument> arguments)
+    {
+        return new Directive(
+            directive.Name,
+            new Arguments(arguments),
+            directive.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Extensions/Analysis/Cost.cs b/src/graphql/Extensions/Analysis/Cost.cs
index c13c0681c..5a5d51238 100644
--- a/src/graphql/Extensions/Analysis/Cost.cs
+++ b/src/graphql/Extensions/Analysis/Cost.cs
@@ -2,107 +2,109 @@
 using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL.Extensions.Analysis
+namespace Tanka.GraphQL.Extensions.Analysis;
+
+public static class CostAnalyzer
 {
-    public static class CostAnalyzer
-    {
-        public static DirectiveDefinition CostDirective = 
-            @"directive @cost(
+    public static DirectiveDefinition CostDirective =
+        @"directive @cost(
                     complexity: Int!
                     multipliers: [String!]
                ) on FIELD_DEFINITION 
             ";
 
-        internal static TypeSystemDocument CostDirectiveAst = 
-            @"directive @cost(
+    internal static TypeSystemDocument CostDirectiveAst =
+        @"directive @cost(
                     complexity: Int!
                     multipliers: [String!]
                ) on FIELD_DEFINITION 
             ";
 
 
-        public static CombineRule MaxCost(
-            uint maxCost,
-            uint defaultFieldComplexity = 1,
-            bool addExtensionData = false,
-            Action<(IRuleVisitorContext Context, OperationDefinition Operation, uint Cost, uint MaxCost)>?
-                onCalculated = null
-        )
+    public static CombineRule MaxCost(
+        uint maxCost,
+        uint defaultFieldComplexity = 1,
+        bool addExtensionData = false,
+        Action<(IRuleVisitorContext Context, OperationDefinition Operation, uint Cost, uint MaxCost)>?
+            onCalculated = null
+    )
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            uint cost = 0;
+            rule.EnterOperationDefinition += node => { cost = 0; };
+            rule.EnterFieldSelection += node =>
             {
-                uint cost = 0;
-                rule.EnterOperationDefinition += node => { cost = 0; };
-                rule.EnterFieldSelection += node =>
+                var field = context.Tracker.FieldDefinition;
+
+                if (field is not null)
                 {
-                    var fieldDef = context.Tracker.GetFieldDef();
+                    int complexity = (int)defaultFieldComplexity;
 
-                    if (fieldDef.HasValue)
+                    if (field.TryGetDirective("cost", out var costDirective))
                     {
-                        var field = fieldDef.Value.Field;
-                        var costDirective = field.GetDirective("cost");
-
-                        if (costDirective != null)
+                        if (costDirective.TryGetArgument("complexity", out var complexityArg))
                         {
-                            var complexity = costDirective.GetArgument<int>("complexity");
-                            var multipliersArg = costDirective.GetArgument<object>("multipliers");
-
-                            if (multipliersArg is IEnumerable<object> multipliers)
-                                foreach (var multiplier in multipliers)
-                                {
-                                    var multiplierName = multiplier.ToString();
-                                    var multiplierArgDef = field.GetArgument(multiplierName);
+                            complexity = (int?)Values.CoerceValue(context.Schema, complexityArg?.Value, "Int!") ?? 0;
+                        }
 
-                                    if (multiplierArgDef == null)
-                                        continue;
+                        costDirective.TryGetArgument("multipliers", out var multipliersArg);
+                        if (Values.CoerceValue(context.Schema, multipliersArg?.Value, "[String!]") is
+                            IEnumerable<object> multipliers)
+                        {
+                            foreach (var multiplier in multipliers.Select(o => o.ToString()))
+                            {
+                                var multiplierName = multiplier;
+                                field.TryGetArgument(multiplierName, out var multiplierArgDef);
 
-                                    var multiplierArg =
-                                        node.Arguments?.SingleOrDefault(a => a.Name == multiplierName);
+                                if (multiplierArgDef == null)
+                                    continue;
 
-                                    if (multiplierArg == null)
-                                        continue;
+                                var multiplierArg =
+                                    node.Arguments?.SingleOrDefault(a => a.Name == multiplierName);
 
-                                    var multiplierValue = (int) ArgumentCoercion.CoerceArgumentValue(
-                                        context.Schema,
-                                        context.VariableValues,
-                                        multiplierName,
-                                        multiplierArgDef,
-                                        multiplierArg);
+                                if (multiplierArg == null)
+                                    continue;
 
-                                    complexity *= multiplierValue;
-                                }
+                                var multiplierValue = (int?)ArgumentCoercion.CoerceArgumentValue(
+                                    context.Schema,
+                                    context.VariableValues,
+                                    multiplierName,
+                                    multiplierArgDef,
+                                    multiplierArg) ?? 1;
 
-                            cost += (uint) complexity;
-                        }
-                        else
-                        {
-                            cost += defaultFieldComplexity;
+                                complexity *= multiplierValue;
+                            }
                         }
                     }
-                };
-                rule.LeaveOperationDefinition += node =>
-                {
-                    onCalculated?.Invoke((context, node, cost, maxCost));
 
-                    if (addExtensionData)
-                        context.Extensions.Set("cost", new
-                        {
-                            Cost = cost,
-                            MaxCost = maxCost
-                        });
+                    cost += (uint)complexity;
+                }
+            };
+
+            rule.LeaveOperationDefinition += node =>
+            {
+                onCalculated?.Invoke((context, node, cost, maxCost));
+
+                if (addExtensionData)
+                    context.Extensions.Set("cost", new
+                    {
+                        Cost = cost,
+                        MaxCost = maxCost
+                    });
 
 
-                    if (cost > maxCost)
-                        context.Error(
-                            "MAX_COST",
-                            $"Query cost '{cost}' is too high. Max allowed: '{maxCost}'",
-                            node);
-                };
+                if (cost > maxCost)
+                    context.Error(
+                        "MAX_COST",
+                        $"Query cost '{cost}' is too high. Max allowed: '{maxCost}'",
+                        node);
             };
-        }
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/FieldSelectionMergingValidator.cs b/src/graphql/Validation/FieldSelectionMergingValidator.cs
index fe8a4ffda..393492fa0 100644
--- a/src/graphql/Validation/FieldSelectionMergingValidator.cs
+++ b/src/graphql/Validation/FieldSelectionMergingValidator.cs
@@ -239,7 +239,7 @@ private void CollectConflictsWithin(
 
 
         private void CollectFieldsAndFragmentNames(
-            NamedType? parentType,
+            TypeDefinition parentType,
             SelectionSet selectionSet,
             Dictionary<string, List<FieldDefPair>> nodeAndDefs,
             Dictionary<string, bool> fragments)
@@ -274,14 +274,18 @@ private void CollectFieldsAndFragmentNames(
                 else if (selection is InlineFragment inlineFragment)
                 {
                     var typeCondition = inlineFragment.TypeCondition;
-                    var inlineFragmentType =
-                        typeCondition ?? parentType;
-
-                    CollectFieldsAndFragmentNames(
-                        inlineFragmentType,
-                        inlineFragment.SelectionSet,
-                        nodeAndDefs,
-                        fragments);
+
+                    if (typeCondition is not null)
+                    {
+                        var inlineFragmentType =
+                            _context.Schema.GetNamedType(typeCondition.Name) ?? parentType;
+
+                        CollectFieldsAndFragmentNames(
+                            inlineFragmentType,
+                            inlineFragment.SelectionSet,
+                            nodeAndDefs,
+                            fragments);
+                    }
                 }
             }
         }
@@ -323,11 +327,11 @@ private static string FieldsConflictMessage(string responseName, ConflictReason
             FieldDefPair fieldDefPair1,
             FieldDefPair fieldDefPair2)
         {
-            var parentType1 = fieldDefPair1.ParentType;
+            var parentType1 = _context.Schema.GetNamedType(fieldDefPair1.ParentType.Name);
             var node1 = fieldDefPair1.Field;
             var def1 = fieldDefPair1.FieldDef;
 
-            var parentType2 = fieldDefPair2.ParentType;
+            var parentType2 = _context.Schema.GetNamedType(fieldDefPair2.ParentType.Name);
             var node2 = fieldDefPair2.Field;
             var def2 = fieldDefPair2.FieldDef;
 
@@ -413,9 +417,9 @@ private static string FieldsConflictMessage(string responseName, ConflictReason
                     cachedFieldsAndFragmentNames,
                     comparedFragmentPairs,
                     areMutuallyExclusive,
-                    type1?.Unwrap(),
+                    Ast.UnwrapAndResolveType(_context.Schema, type1),
                     selectionSet1,
-                    type2?.Unwrap(),
+                    Ast.UnwrapAndResolveType(_context.Schema, type2),
                     selectionSet2);
 
                 return SubfieldConflicts(conflicts, responseName, node1, node2);
@@ -428,9 +432,9 @@ private List<Conflict> FindConflictsBetweenSubSelectionSets(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
             PairSet comparedFragmentPairs,
             bool areMutuallyExclusive,
-            NamedType? parentType1,
+            TypeDefinition parentType1,
             SelectionSet selectionSet1,
-            NamedType? parentType2,
+            TypeDefinition parentType2,
             SelectionSet selectionSet2)
         {
             var conflicts = new List<Conflict>();
@@ -513,7 +517,7 @@ private List<Conflict> FindConflictsBetweenSubSelectionSets(
         private List<Conflict> FindConflictsWithinSelectionSet(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
             PairSet comparedFragmentPairs,
-            NamedType? parentType,
+            TypeDefinition parentType,
             SelectionSet selectionSet)
         {
             var conflicts = new List<Conflict>();
@@ -568,7 +572,7 @@ private List<Conflict> FindConflictsWithinSelectionSet(
 
         private CachedField GetFieldsAndFragmentNames(
             Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            NamedType? parentType,
+            TypeDefinition parentType,
             SelectionSet selectionSet)
         {
             cachedFieldsAndFragmentNames.TryGetValue(selectionSet,
@@ -605,18 +609,18 @@ private CachedField GetReferencedFieldsAndFragmentNames(
             var fragmentType = fragment.TypeCondition;
             return GetFieldsAndFragmentNames(
                 cachedFieldsAndFragmentNames,
-                fragmentType,
+                _context.Schema.GetNamedType(fragmentType.Name) ?? throw  new InvalidOperationException($"Could not find type '{fragmentType.Name}' from schema."),
                 fragment.SelectionSet);
         }
 
-        private bool IsInterfaceType(NamedType parentType)
+        private bool IsInterfaceType(TypeDefinition? parentType)
         {
-            return _context.Schema.GetNamedType(parentType.Name) is InterfaceDefinition;
+            return parentType is InterfaceDefinition;
         }
 
-        private bool IsObjectDefinition(NamedType? parentType)
+        private bool IsObjectDefinition(TypeDefinition? parentType)
         {
-            return _context.Schema.GetNamedType(parentType.Name) is ObjectDefinition;
+            return parentType is ObjectDefinition;
         }
 
         private static string ReasonMessage(Message reasonMessage)
@@ -751,7 +755,7 @@ private class FieldDefPair
             public FieldSelection Field { get; set; }
 
             public FieldDefinition? FieldDef { get; set; }
-            public NamedType? ParentType { get; set; }
+            public TypeDefinition? ParentType { get; set; }
         }
 
         private class Message
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index 7c90b2efd..faf400ab1 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -1,17 +1,49 @@
+using System;
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Validation;
 
 public class TypeTracker : RuleVisitor
 {
-    public Stack<NamedType?> ParentTypes { get; } = new();
+    protected Stack<TypeDefinition?> ParentTypes { get; } = new();
+
+    protected Stack<FieldDefinition?> FieldDefinitions { get; } = new();
 
     public TypeTracker(ISchema schema)
     {
+        EnterOperationDefinition += node =>
+        {
+            var root = node.Operation switch
+            {
+                OperationType.Query => schema.Query,
+                OperationType.Mutation => schema.Mutation,
+                OperationType.Subscription => schema.Subscription,
+                _ => throw new ArgumentOutOfRangeException()
+            };
+
+            ParentTypes.Push(root);
+        };
+
+        LeaveOperationDefinition += node =>
+        {
+            ParentTypes.TryPop(out _);
+        };
 
+        EnterFieldSelection += node =>
+        {
+            if (ParentType is not null)
+            {
+                var fieldDefinition = schema.GetField(ParentType.Name, node.Name);
+
+                FieldDefinitions.Push(fieldDefinition ?? null);
+            }
+        };
     }
 
-    public NamedType? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
+    public TypeDefinition? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
+
+    public FieldDefinition? FieldDefinition => FieldDefinitions.Count > 0 ? FieldDefinitions.Peek() : null;
 }
\ No newline at end of file
diff --git a/src/graphql/graphql.csproj b/src/graphql/graphql.csproj
index a8a97244b..f230db536 100644
--- a/src/graphql/graphql.csproj
+++ b/src/graphql/graphql.csproj
@@ -13,6 +13,11 @@
     <None Remove="Extensions\**" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Include="Extensions\Analysis\Cost.cs" />
+    <Compile Include="Extensions\ExtensionsImportProvider.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="System.Text.Json" Version="6.0.2" />
     <PackageReference Include="System.Threading.Channels" Version="6.0.0" />
diff --git a/tests/graphql.tests/Analysis/CostFacts.cs b/tests/graphql.tests/Analysis/CostFacts.cs
index 1dbc456bd..72e7a70d5 100644
--- a/tests/graphql.tests/Analysis/CostFacts.cs
+++ b/tests/graphql.tests/Analysis/CostFacts.cs
@@ -1,22 +1,19 @@
 using System;
 using System.Collections.Generic;
-
 using Tanka.GraphQL.Extensions.Analysis;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Analysis
+namespace Tanka.GraphQL.Tests.Analysis;
+
+public class CostFacts
 {
-    public class CostFacts
+    public CostFacts()
     {
-        public CostFacts()
-        {
-            var sdl =
-                @"
+        var sdl =
+            @"
                 schema {
                     query: Query
                 }
@@ -28,162 +25,160 @@ type Query {
                 }
                 ";
 
-            Schema = new SchemaBuilder()
-                .Include(CostAnalyzer.CostDirective)
-                .Sdl(sdl)
-                .Build();
-        }
-
-        public ISchema Schema { get; }
-
-        private ValidationResult Validate(
-            ExecutableDocument document,
-            CombineRule rule,
-            Dictionary<string, object> variables = null)
-        {
-            if (document == null) throw new ArgumentNullException(nameof(document));
-            if (rule == null) throw new ArgumentNullException(nameof(rule));
-
-            return Validator.Validate(
-                new[] {rule},
-                Schema,
-                document,
-                variables);
-        }
-
-        [Fact]
-        public void Cost_above_max_cost_with_costDirective()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+        Schema = new SchemaBuilder()
+            .Add(sdl)
+            .Build(new SchemaBuildOptions()).Result;
+    }
+
+    public ISchema Schema { get; }
+
+    [Fact]
+    public void Cost_above_max_cost_with_costDirective()
+    {
+        /* Given */
+        var document =
+            @"{
                     withCost
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 0, 
-                    defaultFieldComplexity: 0)
-                );
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == "MAX_COST");
-        }
-
-        [Fact]
-        public void Cost_above_max_cost_with_costDirective_and_multiplier()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 0,
+                defaultFieldComplexity: 0)
+        );
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == "MAX_COST");
+    }
+
+    [Fact]
+    public void Cost_above_max_cost_with_costDirective_and_multiplier()
+    {
+        /* Given */
+        var document =
+            @"{
                     withMultiplier(count: 5)
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 5, 
-                    defaultFieldComplexity: 0)
-                );
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == "MAX_COST");
-        }
-
-        [Fact]
-        public void Cost_above_max_cost_with_defaultComplexity()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 5,
+                defaultFieldComplexity: 0)
+        );
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == "MAX_COST");
+    }
+
+    [Fact]
+    public void Cost_above_max_cost_with_defaultComplexity()
+    {
+        /* Given */
+        var document =
+            @"{
                     default
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 0,
-                    defaultFieldComplexity: 1)
-                );
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == "MAX_COST");
-        }
-
-        [Fact]
-        public void Cost_below_max_cost_with_defaultComplexity()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 0,
+                defaultFieldComplexity: 1)
+        );
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == "MAX_COST");
+    }
+
+    [Fact]
+    public void Cost_below_max_cost_with_defaultComplexity()
+    {
+        /* Given */
+        var document =
+            @"{
                     default
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 1,
-                    defaultFieldComplexity: 1)
-                );
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Cost_below_max_cost_with_with_costDirective()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 1,
+                defaultFieldComplexity: 1)
+        );
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Cost_below_max_cost_with_with_costDirective()
+    {
+        /* Given */
+        var document =
+            @"{
                     withCost
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 1, 
-                    defaultFieldComplexity: 0)
-                );
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Cost_below_max_cost_with_with_costDirective_and_multiplier()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 1,
+                defaultFieldComplexity: 0)
+        );
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Cost_below_max_cost_with_with_costDirective_and_multiplier()
+    {
+        /* Given */
+        var document =
+            @"{
                     withMultiplier
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                CostAnalyzer.MaxCost(
-                    maxCost: 3, 
-                    defaultFieldComplexity: 0)
-                );
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            CostAnalyzer.MaxCost(
+                maxCost: 3,
+                defaultFieldComplexity: 0)
+        );
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    private ValidationResult Validate(
+        ExecutableDocument document,
+        CombineRule rule,
+        Dictionary<string, object> variables = null)
+    {
+        if (document == null) throw new ArgumentNullException(nameof(document));
+        if (rule == null) throw new ArgumentNullException(nameof(rule));
+
+        return Validator.Validate(
+            new[] { rule },
+            Schema,
+            document,
+            variables);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index a5ce29740..9a49c1cb9 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -8,21 +8,18 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Compile Remove="Analysis\**" />
     <Compile Remove="Bug\**" />
     <Compile Remove="Descriptions\**" />
     <Compile Remove="Extensions\**" />
     <Compile Remove="Tools\**" />
     <Compile Remove="TypeSystem\**" />
     <Compile Remove="Validation\**" />
-    <EmbeddedResource Remove="Analysis\**" />
     <EmbeddedResource Remove="Bug\**" />
     <EmbeddedResource Remove="Descriptions\**" />
     <EmbeddedResource Remove="Extensions\**" />
     <EmbeddedResource Remove="Tools\**" />
     <EmbeddedResource Remove="TypeSystem\**" />
     <EmbeddedResource Remove="Validation\**" />
-    <None Remove="Analysis\**" />
     <None Remove="Bug\**" />
     <None Remove="Descriptions\**" />
     <None Remove="Extensions\**" />

From 271b05e1d4abaa0fcf266df22983ffe9c371e0ec Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Fri, 11 Feb 2022 17:42:28 +0200
Subject: [PATCH 05/26] More validation rules migrated + one new one for
 interfaces implementing interfaces

---
 .../InterfaceDefinitionExtensions.cs          |   28 +-
 .../Extensions/ReadOnlyListExtensions.cs      |   43 +-
 .../Nodes/TypeSystem/TypeDefinition.cs        |    2 +
 src/graphql/TypeSystem/Ast.cs                 |    7 +-
 src/graphql/TypeSystem/ExecutableSchema.cs    |   12 +-
 src/graphql/TypeSystem/ISchema.cs             |    2 +-
 src/graphql/Validation/ExecutionRules.cs      | 2432 +++++++++--------
 src/graphql/Validation/RuleVisitor.cs         |    2 +
 src/graphql/Validation/RulesWalker.cs         |   10 +-
 src/graphql/Validation/TypeTracker.cs         |  222 +-
 .../Validation/ValidatorFacts.Arguments.cs    |  200 ++
 .../Validation/ValidatorFacts.Fragments.cs    |  556 ++++
 .../Validation/ValidatorFacts.Rules.cs        |  919 +++++++
 ...alidatorFacts.ValidatorFacts.Selections.cs |  458 ++++
 .../Validation/ValidatorFacts.cs              | 2144 +--------------
 tests/graphql.tests/graphql.tests.csproj      |    4 +
 16 files changed, 3680 insertions(+), 3361 deletions(-)
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.Rules.cs
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs

diff --git a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
index a4312dfaa..d87966d36 100644
--- a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
@@ -8,6 +8,13 @@ namespace Tanka.GraphQL.Language
 {
     public static class InterfaceDefinitionExtensions
     {
+        public static bool HasInterface(
+            this InterfaceDefinition definition,
+            Name interfaceName)
+        {
+            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
+        }
+
         public static bool TryGetDirective(
             this InterfaceDefinition definition,
             Name directiveName,
@@ -22,27 +29,6 @@ public static bool TryGetDirective(
             return definition.Directives.TryGet(directiveName, out directive);
         }
 
-        public static bool TryImplements(
-            this InterfaceDefinition definition,
-            Name interfaceName,
-            [NotNullWhen(true)] out NamedType? namedType)
-        {
-            if (definition.Interfaces is null)
-            {
-                namedType = null;
-                return false;
-            }
-
-            return definition.Interfaces.TryGet(interfaceName, out namedType);
-        }
-
-        public static bool Implements(
-            this InterfaceDefinition definition,
-            Name interfaceName)
-        {
-            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
-        }
-
         public static InterfaceDefinition WithDescription(this InterfaceDefinition definition,
             in StringValue? description)
         {
diff --git a/src/graphql.language/Extensions/ReadOnlyListExtensions.cs b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
index 12bc9d3c5..45981026b 100644
--- a/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
+++ b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
@@ -52,14 +52,43 @@ public static class ReadOnlyListExtensions
 
             if (right is not null)
             {
-                return result.Join(
+                return Joiner(
+                    result,
                     right,
                     keySelector,
-                    keySelector,
                     resultSelector).ToList();
             }
 
             return result;
+
+            IEnumerable<T> Joiner<T>(
+                IEnumerable<T> left,
+                IEnumerable<T> right,
+                Func<T, TKey> keySelector,
+                Func<T, T, T> conflictResolver)
+            {
+                var leftKeyed = left.ToDictionary(keySelector, item => item);
+                var rightKeyed = right.ToDictionary(keySelector, item => item);
+
+                foreach (var (leftKey, leftItem) in leftKeyed)
+                {
+                    if (rightKeyed.TryGetValue(leftKey, out var rightItem))
+                    {
+                        var resolvedItem = conflictResolver(leftItem, rightItem);
+                        yield return resolvedItem;
+                        rightKeyed.Remove(leftKey);
+                        continue;
+                    }
+
+                    yield return leftItem;
+                }
+
+                // non conflicting right items
+                foreach (var (_, rightItem) in rightKeyed)
+                {
+                    yield return rightItem;
+                }
+            }
         }
 
         public static IReadOnlyList<NamedType>? Join(
@@ -86,8 +115,14 @@ public static class ReadOnlyListExtensions
             var fields = Join(
                 left,
                 right,
-                field => field.Name.Value,
-                (leftField, _) => leftField);
+                field =>
+                {
+                    return field.Name.Value;
+                },
+                (leftField, _) =>
+                {
+                    return leftField;
+                });
 
             if (fields is null)
                 return null;
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
index 6d7e19d7c..661bc0bb4 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
@@ -1,8 +1,10 @@
 using System;
+using System.Diagnostics;
 using System.Text;
 
 namespace Tanka.GraphQL.Language.Nodes.TypeSystem
 {
+    [DebuggerDisplay("{Kind}", Name = "{Name}")]
     public abstract class TypeDefinition : INode, IEquatable<TypeDefinition>
     {
         public abstract Name Name { get; }
diff --git a/src/graphql/TypeSystem/Ast.cs b/src/graphql/TypeSystem/Ast.cs
index 34bd3aef6..076d6dbcf 100644
--- a/src/graphql/TypeSystem/Ast.cs
+++ b/src/graphql/TypeSystem/Ast.cs
@@ -49,13 +49,14 @@ public static bool DoesFragmentTypeApply(
             };
         }
 
-        public static TypeDefinition UnwrapAndResolveType(ISchema schema, TypeBase type)
+        public static TypeDefinition? UnwrapAndResolveType(ISchema schema, TypeBase? type)
         {
             return type switch
             {
-                NonNullType NonNullType => UnwrapAndResolveType(schema, NonNullType.OfType),
+                null => null,
+                NonNullType nonNullType => UnwrapAndResolveType(schema, nonNullType.OfType),
                 ListType list => UnwrapAndResolveType(schema, list.OfType),
-                NamedType namedType => schema.GetRequiredNamedType<TypeDefinition>(namedType.Name),
+                NamedType namedType => schema.GetNamedType(namedType.Name),
                 _ => throw new InvalidOperationException($"Unsupported type '{type}'")
             };
         }
diff --git a/src/graphql/TypeSystem/ExecutableSchema.cs b/src/graphql/TypeSystem/ExecutableSchema.cs
index 957c129e5..2e6900982 100644
--- a/src/graphql/TypeSystem/ExecutableSchema.cs
+++ b/src/graphql/TypeSystem/ExecutableSchema.cs
@@ -123,9 +123,17 @@ public IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(st
             return null;
         }
 
-        public IEnumerable<ObjectDefinition> GetPossibleTypes(InterfaceDefinition abstractType)
+        public IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType)
         {
-            return QueryTypes<ObjectDefinition>(ob => ob.HasInterface(abstractType.Name));
+            foreach (var objectDefinition in QueryTypes<ObjectDefinition>(ob => ob.HasInterface(abstractType.Name)))
+            {
+                yield return objectDefinition;
+            }
+
+            foreach (var interfaceDefinition in QueryTypes<InterfaceDefinition>(ob => ob.HasInterface(abstractType.Name)))
+            {
+                yield return interfaceDefinition;
+            }
         }
 
         public IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType)
diff --git a/src/graphql/TypeSystem/ISchema.cs b/src/graphql/TypeSystem/ISchema.cs
index 55bc75e29..d555ea2d8 100644
--- a/src/graphql/TypeSystem/ISchema.cs
+++ b/src/graphql/TypeSystem/ISchema.cs
@@ -31,7 +31,7 @@ public interface ISchema : IHasDirectives
 
         InputValueDefinition? GetInputField(string type, string name);
 
-        IEnumerable<ObjectDefinition> GetPossibleTypes(InterfaceDefinition abstractType);
+        IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType);
 
         IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType);
 
diff --git a/src/graphql/Validation/ExecutionRules.cs b/src/graphql/Validation/ExecutionRules.cs
index 7b44ae729..532a1f2a5 100644
--- a/src/graphql/Validation/ExecutionRules.cs
+++ b/src/graphql/Validation/ExecutionRules.cs
@@ -1,786 +1,788 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public static class ExecutionRules
 {
-    public static class ExecutionRules
+    public static IEnumerable<CombineRule> All = new[]
     {
-        public static IEnumerable<CombineRule> All = new[]
-        {
-            /* R511ExecutableDefinitions(),*/
-            
-            R5211OperationNameUniqueness(),
-            /*R5221LoneAnonymousOperation(),
-            R5231SingleRootField(),
-            
-            R531FieldSelections(),
-            R532FieldSelectionMerging(),
-            R533LeafFieldSelections(),
-
-            R541ArgumentNames(),
-            R542ArgumentUniqueness(),
-            R5421RequiredArguments(),
-
-            R5511FragmentNameUniqueness(),
-            R5512FragmentSpreadTypeExistence(),
-            R5513FragmentsOnCompositeTypes(),
-            R5514FragmentsMustBeUsed(),
-
-            R5521FragmentSpreadTargetDefined(),
-            R5522FragmentSpreadsMustNotFormCycles(),
-            R5523FragmentSpreadIsPossible(),
-
-            R561ValuesOfCorrectType(),
-            R562InputObjectFieldNames(),
-            R563InputObjectFieldUniqueness(),
-            R564InputObjectRequiredFields(),
-            
-            R571And573Directives(),
-            R572DirectivesAreInValidLocations(),
-
-            R581And582Variables(),
-            R583AllVariableUsesDefined(),
-            R584AllVariablesUsed(),
-            R585AllVariableUsagesAreAllowed(),*/
-            
-        };
-
-
-        /// <summary>
-        ///     Formal Specification
-        ///     For each definition definition in the document.
-        ///     definition must be OperationDefinition or FragmentDefinition (it must not be TypeSystemDefinition).
-        /// </summary>
-        /* Not required as executable document can only contain operations or fragments or both
-        public static CombineRule R511ExecutableDefinitions()
+        /* R511ExecutableDefinitions(),*/
+
+        R5211OperationNameUniqueness(),
+        R5221LoneAnonymousOperation(),
+        R5231SingleRootField(),
+
+        R531FieldSelections(),
+        R532FieldSelectionMerging(),
+        R533LeafFieldSelections(),
+
+        R541ArgumentNames(),
+        R542ArgumentUniqueness(),
+        R5421RequiredArguments(),
+
+        R5511FragmentNameUniqueness(),
+        R5512FragmentSpreadTypeExistence(),
+        R5513FragmentsOnCompositeTypes(),
+        R5514FragmentsMustBeUsed(),
+
+        R5521FragmentSpreadTargetDefined(),
+        R5522FragmentSpreadsMustNotFormCycles(),
+        R5523FragmentSpreadIsPossible(),
+
+        /*R561ValuesOfCorrectType(),
+        R562InputObjectFieldNames(),
+        R563InputObjectFieldUniqueness(),
+        R564InputObjectRequiredFields(),
+        
+        R571And573Directives(),
+        R572DirectivesAreInValidLocations(),
+
+        R581And582Variables(),
+        R583AllVariableUsesDefined(),
+        R584AllVariablesUsed(),
+        R585AllVariableUsagesAreAllowed(),*/
+    };
+
+
+    /// <summary>
+    ///     Formal Specification
+    ///     For each definition definition in the document.
+    ///     definition must be OperationDefinition or FragmentDefinition (it must not be TypeSystemDefinition).
+    /// </summary>
+    /* Not required as executable document can only contain operations or fragments or both
+    public static CombineRule R511ExecutableDefinitions()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterDocument += document =>
             {
-                rule.EnterDocument += document =>
+                foreach (var definition in document.Definitions)
                 {
-                    foreach (var definition in document.Definitions)
-                    {
-                        var valid = definition.Kind == NodeKind.OperationDefinition
-                                    || definition.Kind == NodeKind.FragmentDefinition;
+                    var valid = definition.Kind == NodeKind.OperationDefinition
+                                || definition.Kind == NodeKind.FragmentDefinition;
 
-                        if (!valid)
-                            context.Error(
-                                ValidationErrorCodes.R511ExecutableDefinitions,
-                                "GraphQL execution will only consider the " +
-                                "executable definitions Operation and Fragment. " +
-                                "Type system definitions and extensions are not " +
-                                "executable, and are not considered during execution. " +
-                                $"Non executable definition kind: '{definition.Kind}.'",
-                                definition);
-                    }
-                };
+                    if (!valid)
+                        context.Error(
+                            ValidationErrorCodes.R511ExecutableDefinitions,
+                            "GraphQL execution will only consider the " +
+                            "executable definitions Operation and Fragment. " +
+                            "Type system definitions and extensions are not " +
+                            "executable, and are not considered during execution. " +
+                            $"Non executable definition kind: '{definition.Kind}.'",
+                            definition);
+                }
             };
-        }
-        */
-
-        /// <summary>
-        ///     Formal Specification
-        ///     For each operation definition operation in the document.
-        ///     Let operationName be the name of operation.
-        ///     If operationName exists
-        ///     Let operations be all operation definitions in the document named operationName.
-        ///     operations must be a set of one.
-        /// </summary>
-        public static CombineRule R5211OperationNameUniqueness()
+        };
+    }
+    */
+
+    /// <summary>
+    ///     Formal Specification
+    ///     For each operation definition operation in the document.
+    ///     Let operationName be the name of operation.
+    ///     If operationName exists
+    ///     Let operations be all operation definitions in the document named operationName.
+    ///     operations must be a set of one.
+    /// </summary>
+    public static CombineRule R5211OperationNameUniqueness()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var known = new List<string>();
+            rule.EnterOperationDefinition += definition =>
             {
-                var known = new List<string>();
-                rule.EnterOperationDefinition += definition =>
-                {
-                    var operationName = definition.Name;
+                var operationName = definition.Name;
 
-                    if (string.IsNullOrWhiteSpace(operationName))
-                        return;
+                if (string.IsNullOrWhiteSpace(operationName))
+                    return;
 
-                    if (known.Contains(operationName))
-                        context.Error(ValidationErrorCodes.R5211OperationNameUniqueness,
-                            "Each named operation definition must be unique within a " +
-                            "document when referred to by its name. " +
-                            $"Operation: '{operationName}'",
-                            definition);
+                if (known.Contains(operationName))
+                    context.Error(ValidationErrorCodes.R5211OperationNameUniqueness,
+                        "Each named operation definition must be unique within a " +
+                        "document when referred to by its name. " +
+                        $"Operation: '{operationName}'",
+                        definition);
 
-                    known.Add(operationName);
-                };
+                known.Add(operationName);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     Let operations be all operation definitions in the document.
-        ///     Let anonymous be all anonymous operation definitions in the document.
-        ///     If operations is a set of more than 1:
-        ///     anonymous must be empty.
-        /// </summary>
-        /*public static CombineRule R5221LoneAnonymousOperation()
+    /// <summary>
+    ///     Let operations be all operation definitions in the document.
+    ///     Let anonymous be all anonymous operation definitions in the document.
+    ///     If operations is a set of more than 1:
+    ///     anonymous must be empty.
+    /// </summary>
+    public static CombineRule R5221LoneAnonymousOperation()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterDocument += document =>
             {
-                rule.EnterDocument += document =>
-                {
-                    var operations = document.OperationDefinitions;
+                var operations = document.OperationDefinitions;
 
-                    if (operations == null)
-                        return;
-                    
-                    var anonymous = operations
-                        .Count(op => string.IsNullOrEmpty(op.Name));
+                if (operations == null)
+                    return;
 
-                    if (operations.Count() > 1)
-                        if (anonymous > 0)
-                            context.Error(
-                                ValidationErrorCodes.R5221LoneAnonymousOperation,
-                                "GraphQL allows a short‐hand form for defining " +
-                                "query operations when only that one operation exists in " +
-                                "the document.",
-                                (INode) operations);
-                };
+                var anonymous = operations
+                    .Count(op => string.IsNullOrEmpty(op.Name));
+
+                if (operations.Count() > 1)
+                    if (anonymous > 0)
+                        context.Error(
+                            ValidationErrorCodes.R5221LoneAnonymousOperation,
+                            "GraphQL allows a short‐hand form for defining " +
+                            "query operations when only that one operation exists in " +
+                            "the document.",
+                            (INode)operations);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each subscription operation definition subscription in the document
-        ///     Let subscriptionType be the root Subscription type in schema.
-        ///     Let selectionSet be the top level selection set on subscription.
-        ///     Let variableValues be the empty set.
-        ///     Let groupedFieldSet be the result of CollectFields(subscriptionType, selectionSet, variableValues).
-        ///     groupedFieldSet must have exactly one entry.
-        /// </summary>
-        public static CombineRule R5231SingleRootField()
+    /// <summary>
+    ///     For each subscription operation definition subscription in the document
+    ///     Let subscriptionType be the root Subscription type in schema.
+    ///     Let selectionSet be the top level selection set on subscription.
+    ///     Let variableValues be the empty set.
+    ///     Let groupedFieldSet be the result of CollectFields(subscriptionType, selectionSet, variableValues).
+    ///     groupedFieldSet must have exactly one entry.
+    /// </summary>
+    public static CombineRule R5231SingleRootField()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterDocument += document =>
             {
-                rule.EnterDocument += document =>
-                {
-                    var subscriptions = document
-                        ?.OperationDefinitions
-                        .Where(op => op.Operation == OperationType.Subscription)
-                        .ToList();
-                    
-                    
-                    if (subscriptions == null || !subscriptions.Any())
-                        return;
+                var subscriptions = document
+                    ?.OperationDefinitions
+                    ?.Where(op => op.Operation == OperationType.Subscription)
+                    .ToList();
 
-                    var schema = context.Schema;
-                    //todo(pekka): should this report error?
-                    if (schema.Subscription == null)
-                        return;
 
-                    var subscriptionType = schema.Subscription;
-                    foreach (var subscription in subscriptions)
-                    {
-                        var selectionSet = subscription.SelectionSet;
-                        var variableValues = new Dictionary<string, object>();
+                if (subscriptions == null || !subscriptions.Any())
+                    return;
 
-                        var groupedFieldSet = SelectionSets.CollectFields(
-                            schema,
-                            context.Document,
-                            subscriptionType,
-                            selectionSet,
-                            variableValues);
+                var schema = context.Schema;
+                //todo(pekka): should this report error?
+                if (schema.Subscription == null)
+                    return;
 
-                        if (groupedFieldSet.Count != 1)
-                            context.Error(
-                                ValidationErrorCodes.R5231SingleRootField,
-                                "Subscription operations must have exactly one root field.",
-                                subscription);
-                    }
-                };
-            };
-        }
+                var subscriptionType = schema.Subscription;
+                foreach (var subscription in subscriptions)
+                {
+                    var selectionSet = subscription.SelectionSet;
+                    var variableValues = new Dictionary<string, object>();
 
-        /// <summary>
-        ///     For each selection in the document.
-        ///     Let fieldName be the target field of selection
-        ///     fieldName must be defined on type in scope
-        /// </summary>
-        public static CombineRule R531FieldSelections()
+                    var groupedFieldSet = SelectionSets.CollectFields(
+                        schema,
+                        context.Document,
+                        subscriptionType,
+                        selectionSet,
+                        variableValues);
+
+                    if (groupedFieldSet.Count != 1)
+                        context.Error(
+                            ValidationErrorCodes.R5231SingleRootField,
+                            "Subscription operations must have exactly one root field.",
+                            subscription);
+                }
+            };
+        };
+    }
+    
+    /// <summary>
+    ///     For each selection in the document.
+    ///     Let fieldName be the target field of selection
+    ///     fieldName must be defined on type in scope
+    /// </summary>
+    public static CombineRule R531FieldSelections()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterFieldSelection += selection =>
             {
-                rule.EnterFieldSelection += selection =>
-                {
-                    var fieldName = selection.Name;
+                var fieldName = selection.Name;
 
-                    if (fieldName == "__typename") //todo: to constant
-                        return;
+                if (fieldName == "__typename") //todo: to constant
+                    return;
 
-                    if (context.Tracker.GetFieldDef() == null)
-                        context.Error(
-                            ValidationErrorCodes.R531FieldSelections,
-                            "The target field of a field selection must be defined " +
-                            "on the scoped type of the selection set. There are no " +
-                            "limitations on alias names. " +
-                            $"Field: '{fieldName}'",
-                            selection);
-                };
+                if (context.Tracker.FieldDefinition == null)
+                    context.Error(
+                        ValidationErrorCodes.R531FieldSelections,
+                        "The target field of a field selection must be defined " +
+                        "on the scoped type of the selection set. There are no " +
+                        "limitations on alias names. " +
+                        $"Field: '{fieldName}'",
+                        selection);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     If multiple field selections with the same response names are
-        ///     encountered during execution, the field and arguments to execute and
-        ///     the resulting value should be unambiguous. Therefore any two field
-        ///     selections which might both be encountered for the same object are
-        ///     only valid if they are equivalent.
-        /// </summary>
-        /// <returns></returns>
-        public static CombineRule R532FieldSelectionMerging()
+    /// <summary>
+    ///     If multiple field selections with the same response names are
+    ///     encountered during execution, the field and arguments to execute and
+    ///     the resulting value should be unambiguous. Therefore any two field
+    ///     selections which might both be encountered for the same object are
+    ///     only valid if they are equivalent.
+    /// </summary>
+    /// <returns></returns>
+    public static CombineRule R532FieldSelectionMerging()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var validator = new FieldSelectionMergingValidator(context);
+            rule.EnterSelectionSet += selectionSet =>
             {
-                var validator = new FieldSelectionMergingValidator(context);
-                rule.EnterSelectionSet += selectionSet =>
-                {
-                    validator.Validate(selectionSet);
-                };
+                validator.Validate(selectionSet);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each selection in the document
-        ///     Let selectionType be the result type of selection
-        ///     If selectionType is a scalar or enum:
-        ///     The subselection set of that selection must be empty
-        ///     If selectionType is an interface, union, or object
-        ///     The subselection set of that selection must NOT BE empty
-        /// </summary>
-        public static CombineRule R533LeafFieldSelections()
+    /// <summary>
+    ///     For each selection in the document
+    ///     Let selectionType be the result type of selection
+    ///     If selectionType is a scalar or enum:
+    ///     The subselection set of that selection must be empty
+    ///     If selectionType is an interface, union, or object
+    ///     The subselection set of that selection must NOT BE empty
+    /// </summary>
+    public static CombineRule R533LeafFieldSelections()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterFieldSelection += selection =>
             {
-                rule.EnterFieldSelection += selection =>
-                {
-                    var fieldName = selection.Name;
+                var fieldName = selection.Name;
 
-                    if (fieldName == "__typename") //todo: to constant
-                        return;
+                if (fieldName == "__typename") //todo: to constant
+                    return;
 
-                    var field = context.Tracker.GetFieldDef();
+                var field = context.Tracker.FieldDefinition;
 
-                    if (field != null)
-                    {
-                        var selectionType = Ast.UnwrapAndResolveType(context.Schema, field.Type);
-                        var hasSubSelection = selection.SelectionSet?.Any();
+                if (field != null)
+                {
+                    var selectionType = Ast.UnwrapAndResolveType(context.Schema, field.Type);
+                    var hasSubSelection = selection.SelectionSet?.Any();
 
-                        if (selectionType is ScalarDefinition && hasSubSelection == true)
-                            context.Error(
-                                ValidationErrorCodes.R533LeafFieldSelections,
-                                "Field selections on scalars or enums are never " +
-                                "allowed, because they are the leaf nodes of any GraphQL query. " +
-                                $"Field: '{fieldName}'",
-                                selection);
+                    if (selectionType is ScalarDefinition && hasSubSelection == true)
+                        context.Error(
+                            ValidationErrorCodes.R533LeafFieldSelections,
+                            "Field selections on scalars or enums are never " +
+                            "allowed, because they are the leaf nodes of any GraphQL query. " +
+                            $"Field: '{fieldName}'",
+                            selection);
 
-                        if (selectionType is EnumDefinition && hasSubSelection == true)
-                            context.Error(
-                                ValidationErrorCodes.R533LeafFieldSelections,
-                                "Field selections on scalars or enums are never " +
-                                "allowed, because they are the leaf nodes of any GraphQL query. " +
-                                $"Field: '{fieldName}'",
-                                selection);
+                    if (selectionType is EnumDefinition && hasSubSelection == true)
+                        context.Error(
+                            ValidationErrorCodes.R533LeafFieldSelections,
+                            "Field selections on scalars or enums are never " +
+                            "allowed, because they are the leaf nodes of any GraphQL query. " +
+                            $"Field: '{fieldName}'",
+                            selection);
 
-                        if (selectionType is ObjectDefinition && hasSubSelection == null)
-                            context.Error(
-                                ValidationErrorCodes.R533LeafFieldSelections,
-                                "Leaf selections on objects, interfaces, and unions " +
-                                "without subfields are disallowed. " +
-                                $"Field: '{fieldName}'",
-                                selection);
+                    if (selectionType is ObjectDefinition && hasSubSelection == null)
+                        context.Error(
+                            ValidationErrorCodes.R533LeafFieldSelections,
+                            "Leaf selections on objects, interfaces, and unions " +
+                            "without subfields are disallowed. " +
+                            $"Field: '{fieldName}'",
+                            selection);
 
-                        if (selectionType is InterfaceDefinition && hasSubSelection == null)
-                            context.Error(
-                                ValidationErrorCodes.R533LeafFieldSelections,
-                                "Leaf selections on objects, interfaces, and unions " +
-                                "without subfields are disallowed. " +
-                                $"Field: '{fieldName}'",
-                                selection);
+                    if (selectionType is InterfaceDefinition && hasSubSelection == null)
+                        context.Error(
+                            ValidationErrorCodes.R533LeafFieldSelections,
+                            "Leaf selections on objects, interfaces, and unions " +
+                            "without subfields are disallowed. " +
+                            $"Field: '{fieldName}'",
+                            selection);
 
-                        if (selectionType is UnionDefinition && hasSubSelection == null)
-                            context.Error(
-                                ValidationErrorCodes.R533LeafFieldSelections,
-                                "Leaf selections on objects, interfaces, and unions " +
-                                "without subfields are disallowed. " +
-                                $"Field: '{fieldName}'",
-                                selection);
-                    }
-                };
+                    if (selectionType is UnionDefinition && hasSubSelection == null)
+                        context.Error(
+                            ValidationErrorCodes.R533LeafFieldSelections,
+                            "Leaf selections on objects, interfaces, and unions " +
+                            "without subfields are disallowed. " +
+                            $"Field: '{fieldName}'",
+                            selection);
+                }
             };
-        }
-
-        /// <summary>
-        ///     For each argument in the document
-        ///     Let argumentName be the Name of argument.
-        ///     Let argumentDefinition be the argument definition provided by the parent field or definition named argumentName.
-        ///     argumentDefinition must exist.
-        /// </summary>
-        public static CombineRule R541ArgumentNames()
+        };
+    }
+    
+    /// <summary>
+    ///     For each argument in the document
+    ///     Let argumentName be the Name of argument.
+    ///     Let argumentDefinition be the argument definition provided by the parent field or definition named argumentName.
+    ///     argumentDefinition must exist.
+    /// </summary>
+    public static CombineRule R541ArgumentNames()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterArgument += argument =>
             {
-                rule.EnterArgument += argument =>
-                {
-                    if (context.Tracker.GetArgument() == null)
-                        context.Error(
-                            ValidationErrorCodes.R541ArgumentNames,
-                            "Every argument provided to a field or directive " +
-                            "must be defined in the set of possible arguments of that " +
-                            "field or directive. " +
-                            $"Argument: '{argument.Name.Value}'",
-                            argument);
-                };
+                if (context.Tracker.ArgumentDefinition == null)
+                    context.Error(
+                        ValidationErrorCodes.R541ArgumentNames,
+                        "Every argument provided to a field or directive " +
+                        "must be defined in the set of possible arguments of that " +
+                        "field or directive. " +
+                        $"Argument: '{argument.Name.Value}'",
+                        argument);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each Field or Directive in the document.
-        ///     Let arguments be the arguments provided by the Field or Directive.
-        ///     Let argumentDefinitions be the set of argument definitions of that Field or Directive.
-        ///     For each argumentDefinition in argumentDefinitions:
-        ///     - Let type be the expected type of argumentDefinition.
-        ///     - Let defaultValue be the default value of argumentDefinition.
-        ///     - If type is Non‐Null and defaultValue does not exist:
-        ///     - Let argumentName be the name of argumentDefinition.
-        ///     - Let argument be the argument in arguments named argumentName
-        ///     argument must exist.
-        ///     - Let value be the value of argument.
-        ///     value must not be the null literal.
-        /// </summary>
-        public static CombineRule R5421RequiredArguments()
+    /// <summary>
+    ///     For each Field or Directive in the document.
+    ///     Let arguments be the arguments provided by the Field or Directive.
+    ///     Let argumentDefinitions be the set of argument definitions of that Field or Directive.
+    ///     For each argumentDefinition in argumentDefinitions:
+    ///     - Let type be the expected type of argumentDefinition.
+    ///     - Let defaultValue be the default value of argumentDefinition.
+    ///     - If type is Non‐Null and defaultValue does not exist:
+    ///     - Let argumentName be the name of argumentDefinition.
+    ///     - Let argument be the argument in arguments named argumentName
+    ///     argument must exist.
+    ///     - Let value be the value of argument.
+    ///     value must not be the null literal.
+    /// </summary>
+    public static CombineRule R5421RequiredArguments()
+    {
+        ArgumentsDefinition GetFieldArgumentDefinitions(IRuleVisitorContext context)
         {
-            IEnumerable<KeyValuePair<string, Argument>> GetFieldArgumentDefinitions(IRuleVisitorContext context)
-            {
-                var definitions = context
-                    .Tracker
-                    .GetFieldDef()
-                    ?.Arguments;
+            var definitions = context
+                .Tracker
+                .FieldDefinition
+                ?.Arguments;
 
-                if (definitions == null)
-                    return Enumerable.Empty<KeyValuePair<string, Argument>>();
+            if (definitions == null)
+                return ArgumentsDefinition.None;
 
-                return definitions;
-            }
+            return definitions;
+        }
 
-            IEnumerable<KeyValuePair<string, Argument>> GetDirectiveArgumentDefinitions(IRuleVisitorContext context)
-            {
-                var definitions = context
-                                      .Tracker
-                                      .GetDirective()
-                                      ?.Arguments;
+        ArgumentsDefinition GetDirectiveArgumentDefinitions(IRuleVisitorContext context)
+        {
+            var definitions = context
+                                  .Tracker
+                                  .DirectiveDefinition
+                                  ?.Arguments;
 
-                if (definitions == null)
-                    return Enumerable.Empty<KeyValuePair<string, Argument>>();
+            if (definitions == null)
+                return ArgumentsDefinition.None;
 
-                return definitions;
-            }
+            return definitions;
+        }
 
-            void ValidateArguments(
-                IEnumerable<KeyValuePair<string, Argument>> keyValuePairs,
-                List<Language.Nodes.Argument> arguments, 
-                IRuleVisitorContext ruleVisitorContext)
+        void ValidateArguments(
+            ArgumentsDefinition argumentDefinitions,
+            IReadOnlyList<Argument> arguments, 
+            IRuleVisitorContext ruleVisitorContext)
+        {
+            foreach (var argumentDefinition in argumentDefinitions)
             {
-                foreach (var argumentDefinition in keyValuePairs)
-                {
-                    var type = argumentDefinition.Value.Type;
-                    var defaultValue = argumentDefinition.Value.DefaultValue;
-
-                    if (!(type is NonNullType NonNullType) || defaultValue != null)
-                        continue;
+                var type = argumentDefinition.Type;
+                var defaultValue = argumentDefinition.DefaultValue;
 
-                    var argumentName = argumentDefinition.Key;
-                    var argument = arguments?
-                        .SingleOrDefault(a => a.Name == argumentName);
+                if (type is not NonNullType nonNullType || defaultValue != null)
+                    continue;
 
-                    if (argument == null)
-                    {
-                        ruleVisitorContext.Error(
-                            ValidationErrorCodes.R5421RequiredArguments,
-                            "Arguments is required. An argument is required " +
-                            "if the argument type is non‐null and does not have a default " +
-                            "value. Otherwise, the argument is optional. " +
-                            $"Argument '{argumentName}' not given",
-                            arguments);
+                var argumentName = argumentDefinition.Name.Value;
+                var argument = arguments?
+                    .SingleOrDefault(a => a.Name == argumentName);
 
-                        return;
-                    }
+                if (argument == null)
+                {
+                    ruleVisitorContext.Error(
+                        ValidationErrorCodes.R5421RequiredArguments,
+                        "Arguments is required. An argument is required " +
+                        "if the argument type is non‐null and does not have a default " +
+                        "value. Otherwise, the argument is optional. " +
+                        $"Argument '{argumentName}' not given");
 
-                    // variables should be valid
-                    if (argument.Value is Variable)
-                        continue;
-
-                    if (argument.Value == null || argument.Value.Kind == NodeKind.NullValue)
-                        ruleVisitorContext.Error(
-                            ValidationErrorCodes.R5421RequiredArguments,
-                            "Arguments is required. An argument is required " +
-                            "if the argument type is non‐null and does not have a default " +
-                            "value. Otherwise, the argument is optional. " +
-                            $"Value of argument '{argumentName}' cannot be null",
-                            arguments);
+                    return;
                 }
+
+                // variables should be valid
+                if (argument.Value is Variable)
+                    continue;
+
+                if (argument?.Value == null || argument.Value.Kind == NodeKind.NullValue)
+                    ruleVisitorContext.Error(
+                        ValidationErrorCodes.R5421RequiredArguments,
+                        "Arguments is required. An argument is required " +
+                        "if the argument type is non‐null and does not have a default " +
+                        "value. Otherwise, the argument is optional. " +
+                        $"Value of argument '{argumentName}' cannot be null");
             }
+        }
 
-            return (context, rule) =>
+        return (context, rule) =>
+        {
+            rule.EnterFieldSelection += field =>
             {
-                rule.EnterFieldSelection += field =>
-                {
-                    var args = field.Arguments?.ToList();
-                    var argumentDefinitions = 
-                        GetFieldArgumentDefinitions(context);
-
-                    //todo: should this produce error?
-                    if (argumentDefinitions == null)
-                        return;
-
-                    ValidateArguments(argumentDefinitions, args, context);
-                };
-                rule.EnterDirective += directive =>
-                {
-                    var args = directive.Arguments.ToList();
-                    var argumentDefinitions = 
-                        GetDirectiveArgumentDefinitions(context);
-
-                    //todo: should this produce error?
-                    if (argumentDefinitions == null)
-                        return;
+                var args = field.Arguments;
+                var argumentDefinitions = 
+                    GetFieldArgumentDefinitions(context);
 
-                    ValidateArguments(argumentDefinitions, args, context);
-                };
+                ValidateArguments(argumentDefinitions, args ?? Arguments.None, context);
             };
-        }
-
-        /// <summary>
-        ///     For each argument in the Document.
-        ///     Let argumentName be the Name of argument.
-        ///     Let arguments be all Arguments named argumentName in the Argument Set which contains argument.
-        ///     arguments must be the set containing only argument.
-        /// </summary>
-        public static CombineRule R542ArgumentUniqueness()
-        {
-            return (context, rule) =>
+            rule.EnterDirective += directive =>
             {
-                var knownArgs = new List<string>();
-                rule.EnterFieldSelection += _ => knownArgs = new List<string>();
-                rule.EnterDirective += _ => knownArgs = new List<string>();
-                rule.EnterArgument += argument =>
-                {
-                    if (knownArgs.Contains(argument.Name))
-                        context.Error(
-                            ValidationErrorCodes.R542ArgumentUniqueness,
-                            "Fields and directives treat arguments as a mapping of " +
-                            "argument name to value. More than one argument with the same " +
-                            "name in an argument set is ambiguous and invalid. " +
-                            $"Argument: '{argument.Name.Value}'",
-                            argument);
-
-                    knownArgs.Add(argument.Name);
-                };
+                var args = directive.Arguments;
+                var argumentDefinitions = 
+                    GetDirectiveArgumentDefinitions(context);
+
+                ValidateArguments(argumentDefinitions, args ?? Arguments.None, context);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each fragment definition fragment in the document
-        ///     Let fragmentName be the name of fragment.
-        ///     Let fragments be all fragment definitions in the document named fragmentName.
-        ///     fragments must be a set of one.
-        /// </summary>
-        public static CombineRule R5511FragmentNameUniqueness()
+    /// <summary>
+    ///     For each argument in the Document.
+    ///     Let argumentName be the Name of argument.
+    ///     Let arguments be all Arguments named argumentName in the Argument Set which contains argument.
+    ///     arguments must be the set containing only argument.
+    /// </summary>
+    public static CombineRule R542ArgumentUniqueness()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var knownArgs = new List<string>();
+            rule.EnterFieldSelection += _ => knownArgs = new List<string>();
+            rule.EnterDirective += _ => knownArgs = new List<string>();
+            rule.EnterArgument += argument =>
             {
-                var knownFragments = new List<string>();
-                rule.EnterFragmentDefinition += fragment =>
-                {
-                    if (knownFragments.Contains(fragment.FragmentName))
-                        context.Error(
-                            ValidationErrorCodes.R5511FragmentNameUniqueness,
-                            "Fragment definitions are referenced in fragment spreads by name. To avoid " +
-                            "ambiguity, each fragment’s name must be unique within a document. " +
-                            $"Fragment: '{fragment.FragmentName}'",
-                            fragment);
-
-                    knownFragments.Add(fragment.FragmentName);
-                };
+                if (knownArgs.Contains(argument.Name))
+                    context.Error(
+                        ValidationErrorCodes.R542ArgumentUniqueness,
+                        "Fields and directives treat arguments as a mapping of " +
+                        "argument name to value. More than one argument with the same " +
+                        "name in an argument set is ambiguous and invalid. " +
+                        $"Argument: '{argument.Name.Value}'",
+                        argument);
+
+                knownArgs.Add(argument.Name);
             };
-        }
-
-        /// <summary>
-        ///     For each named spread namedSpread in the document
-        ///     Let fragment be the target of namedSpread
-        ///     The target type of fragment must be defined in the schema
-        /// </summary>
-        public static CombineRule R5512FragmentSpreadTypeExistence()
+        };
+    }
+    
+    /// <summary>
+    ///     For each fragment definition fragment in the document
+    ///     Let fragmentName be the name of fragment.
+    ///     Let fragments be all fragment definitions in the document named fragmentName.
+    ///     fragments must be a set of one.
+    /// </summary>
+    public static CombineRule R5511FragmentNameUniqueness()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var knownFragments = new List<string>();
+            rule.EnterFragmentDefinition += fragment =>
             {
-                rule.EnterFragmentDefinition += node =>
-                {
-                    var type = context.Tracker.GetCurrentType();
-
-                    if (type == null)
-                        context.Error(
-                            ValidationErrorCodes.R5512FragmentSpreadTypeExistence,
-                            "Fragments must be specified on types that exist in the schema. This " +
-                            "applies for both named and inline fragments. " +
-                            $"Fragment: '{node.FragmentName}'",
-                            node);
-                };
-                rule.EnterInlineFragment += node =>
-                {
-                    var type = context.Tracker.GetCurrentType();
+                if (knownFragments.Contains(fragment.FragmentName))
+                    context.Error(
+                        ValidationErrorCodes.R5511FragmentNameUniqueness,
+                        "Fragment definitions are referenced in fragment spreads by name. To avoid " +
+                        "ambiguity, each fragment’s name must be unique within a document. " +
+                        $"Fragment: '{fragment.FragmentName}'",
+                        fragment);
 
-                    if (type == null)
-                        context.Error(
-                            ValidationErrorCodes.R5512FragmentSpreadTypeExistence,
-                            "Fragments must be specified on types that exist in the schema. This " +
-                            "applies for both named and inline fragments.",
-                            node);
-                };
+                knownFragments.Add(fragment.FragmentName);
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each fragment defined in the document.
-        ///     The target type of fragment must have kind UNION, INTERFACE, or OBJECT.
-        /// </summary>
-        public static CombineRule R5513FragmentsOnCompositeTypes()
+    /// <summary>
+    ///     For each named spread namedSpread in the document
+    ///     Let fragment be the target of namedSpread
+    ///     The target type of fragment must be defined in the schema
+    /// </summary>
+    public static CombineRule R5512FragmentSpreadTypeExistence()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterFragmentDefinition += node =>
             {
-                rule.EnterFragmentDefinition += node =>
-                {
-                    var type = context.Tracker.GetCurrentType();
-
-                    if (type is UnionDefinition)
-                        return;
-
-                    if (type is ComplexType)
-                        return;
+                var type = context.Tracker.CurrentType;
 
+                if (type == null)
                     context.Error(
-                        ValidationErrorCodes.R5513FragmentsOnCompositeTypes,
-                        "Fragments can only be declared on unions, interfaces, and objects. " +
+                        ValidationErrorCodes.R5512FragmentSpreadTypeExistence,
+                        "Fragments must be specified on types that exist in the schema. This " +
+                        "applies for both named and inline fragments. " +
                         $"Fragment: '{node.FragmentName}'",
                         node);
-                };
-                rule.EnterInlineFragment += node =>
-                {
-                    var type = context.Tracker.GetCurrentType();
-
-                    if (type is UnionDefinition)
-                        return;
-
-                    if (type is ComplexType)
-                        return;
+            };
+            rule.EnterInlineFragment += node =>
+            {
+                var type = context.Tracker.CurrentType;
 
+                if (type == null)
                     context.Error(
-                        ValidationErrorCodes.R5513FragmentsOnCompositeTypes,
-                        "Fragments can only be declared on unions, interfaces, and objects",
+                        ValidationErrorCodes.R5512FragmentSpreadTypeExistence,
+                        "Fragments must be specified on types that exist in the schema. This " +
+                        "applies for both named and inline fragments.",
                         node);
-                };
             };
-        }
+        };
+    }
 
-        /// <summary>
-        ///     For each fragment defined in the document.
-        ///     fragment must be the target of at least one spread in the document
-        /// </summary>
-        public static CombineRule R5514FragmentsMustBeUsed()
+    /// <summary>
+    ///     For each fragment defined in the document.
+    ///     The target type of fragment must have kind UNION, INTERFACE, or OBJECT.
+    /// </summary>
+    public static CombineRule R5513FragmentsOnCompositeTypes()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterFragmentDefinition += node =>
             {
-                var fragments = new Dictionary<string, FragmentDefinition>();
-                var fragmentSpreads = new List<string>();
+                var type = context.Tracker.CurrentType;
 
-                rule.EnterFragmentDefinition += fragment => { fragments.Add(fragment.FragmentName, fragment); };
-                rule.EnterFragmentSpread += spread => { fragmentSpreads.Add(spread.FragmentName); };
-                rule.LeaveDocument += document =>
-                {
-                    foreach (var fragment in fragments)
-                    {
-                        var name = fragment.Key;
-                        if (!fragmentSpreads.Contains(name))
-                            context.Error(
-                                ValidationErrorCodes.R5514FragmentsMustBeUsed,
-                                "Defined fragments must be used within a document. " +
-                                $"Fragment: '{name}'",
-                                fragment.Value);
-                    }
-                };
+                if (type is UnionDefinition)
+                    return;
+
+                if (type is InterfaceDefinition or ObjectDefinition)
+                    return;
+
+                context.Error(
+                    ValidationErrorCodes.R5513FragmentsOnCompositeTypes,
+                    "Fragments can only be declared on unions, interfaces, and objects. " +
+                    $"Fragment: '{node.FragmentName}'",
+                    node);
             };
-        }
+            rule.EnterInlineFragment += node =>
+            {
+                var type = context.Tracker.CurrentType;
+
+                if (type is UnionDefinition)
+                    return;
+
+                if (type is InterfaceDefinition or ObjectDefinition)
+                    return;
+
+                context.Error(
+                    ValidationErrorCodes.R5513FragmentsOnCompositeTypes,
+                    "Fragments can only be declared on unions, interfaces, and objects",
+                    node);
+            };
+        };
+    }
 
-        public static CombineRule R5521FragmentSpreadTargetDefined()
+    /// <summary>
+    ///     For each fragment defined in the document.
+    ///     fragment must be the target of at least one spread in the document
+    /// </summary>
+    public static CombineRule R5514FragmentsMustBeUsed()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var fragments = new Dictionary<string, FragmentDefinition>();
+            var fragmentSpreads = new List<string>();
+
+            rule.EnterFragmentDefinition += fragment => { fragments.Add(fragment.FragmentName, fragment); };
+            rule.EnterFragmentSpread += spread => { fragmentSpreads.Add(spread.FragmentName); };
+            rule.LeaveDocument += document =>
             {
-                rule.EnterFragmentSpread += node =>
+                foreach (var fragment in fragments)
                 {
-                    var fragment = context.GetFragment(node.FragmentName);
-
-                    if (fragment == null)
-                    {
+                    var name = fragment.Key;
+                    if (!fragmentSpreads.Contains(name))
                         context.Error(
-                            ValidationErrorCodes.R5521FragmentSpreadTargetDefined,
-                            $"Named fragment spreads must refer to fragments " +
-                            $"defined within the document. " +
-                            $"Fragment '{node.FragmentName}' not found");
-                    }
-                };
+                            ValidationErrorCodes.R5514FragmentsMustBeUsed,
+                            "Defined fragments must be used within a document. " +
+                            $"Fragment: '{name}'",
+                            fragment.Value);
+                }
             };
-        }
+        };
+    }
 
-        public static CombineRule R5522FragmentSpreadsMustNotFormCycles()
+    public static CombineRule R5521FragmentSpreadTargetDefined()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterFragmentSpread += node =>
             {
-                var visitedFrags = new List<string>();
-                var spreadPath = new Stack<FragmentSpread>();
+                var fragment = context.GetFragment(node.FragmentName);
 
-                // Position in the spread path
-                var spreadPathIndexByName = new Dictionary<string, int?>();
-                var fragments = context.Document.FragmentDefinitions;
-                
-                rule.EnterFragmentDefinition += node =>
+                if (fragment == null)
                 {
-                    DetectCycleRecursive(
-                        node,
-                        spreadPath,
-                        visitedFrags,
-                        spreadPathIndexByName,
-                        context,
-                        fragments);
-                };
+                    context.Error(
+                        ValidationErrorCodes.R5521FragmentSpreadTargetDefined,
+                        $"Named fragment spreads must refer to fragments " +
+                        $"defined within the document. " +
+                        $"Fragment '{node.FragmentName}' not found");
+                }
             };
+        };
+    }
 
-            string CycleErrorMessage(string fragName, string[] spreadNames)
-            {
-                var via = spreadNames.Any() ? " via " + string.Join(", ", spreadNames) : "";
-                return "The graph of fragment spreads must not form any cycles including spreading itself. " +
-                       "Otherwise an operation could infinitely spread or infinitely execute on cycles in the " +
-                       "underlying data. " +
-                       $"Cannot spread fragment \"{fragName}\" within itself {via}.";
-            }
+    public static CombineRule R5522FragmentSpreadsMustNotFormCycles()
+    {
+        return (context, rule) =>
+        {
+            var visitedFrags = new List<string>();
+            var spreadPath = new Stack<FragmentSpread>();
 
-            IEnumerable<FragmentSpread> GetFragmentSpreads(SelectionSet node)
+            // Position in the spread path
+            var spreadPathIndexByName = new Dictionary<string, int?>();
+            var fragments = context.Document.FragmentDefinitions;
+            
+            rule.EnterFragmentDefinition += node =>
             {
-                var spreads = new List<FragmentSpread>();
+                DetectCycleRecursive(
+                    node,
+                    spreadPath,
+                    visitedFrags,
+                    spreadPathIndexByName,
+                    context,
+                    fragments);
+            };
+        };
+
+        string CycleErrorMessage(string fragName, string[] spreadNames)
+        {
+            var via = spreadNames.Any() ? " via " + string.Join(", ", spreadNames) : "";
+            return "The graph of fragment spreads must not form any cycles including spreading itself. " +
+                   "Otherwise an operation could infinitely spread or infinitely execute on cycles in the " +
+                   "underlying data. " +
+                   $"Cannot spread fragment \"{fragName}\" within itself {via}.";
+        }
 
-                var setsToVisit = new Stack<SelectionSet>(new[] {node});
+        IEnumerable<FragmentSpread> GetFragmentSpreads(SelectionSet node)
+        {
+            var spreads = new List<FragmentSpread>();
 
-                while (setsToVisit.Any())
-                {
-                    var set = setsToVisit.Pop();
-
-                    foreach (var selection in set.Selections)
-                        if (selection is FragmentSpread spread)
-                            spreads.Add(spread);
-                        else if (selection is FieldSelection fieldSelection)
-                            if (fieldSelection.SelectionSet != null)
-                                setsToVisit.Push(fieldSelection.SelectionSet);
-                }
+            var setsToVisit = new Stack<SelectionSet>(new[] {node});
 
-                return spreads;
+            while (setsToVisit.Any())
+            {
+                var set = setsToVisit.Pop();
+
+                foreach (var selection in set.Selections)
+                    if (selection is FragmentSpread spread)
+                        spreads.Add(spread);
+                    else if (selection is FieldSelection fieldSelection)
+                        if (fieldSelection.SelectionSet != null)
+                            setsToVisit.Push(fieldSelection.SelectionSet);
             }
 
-            void DetectCycleRecursive(
-                FragmentDefinition fragment,
-                Stack<FragmentSpread> spreadPath,
-                List<string> visitedFrags,
-                Dictionary<string, int?> spreadPathIndexByName,
-                IRuleVisitorContext context,
-                IReadOnlyCollection<FragmentDefinition>? fragments)
-            {
-                if (fragments == null)
-                    return;
-                
-                var fragmentName = fragment.FragmentName;
-                if (visitedFrags.Contains(fragmentName))
-                    return;
+            return spreads;
+        }
 
-                var spreadNodes = GetFragmentSpreads(fragment.SelectionSet)
-                    .ToArray();
+        void DetectCycleRecursive(
+            FragmentDefinition fragment,
+            Stack<FragmentSpread> spreadPath,
+            List<string> visitedFrags,
+            Dictionary<string, int?> spreadPathIndexByName,
+            IRuleVisitorContext context,
+            IReadOnlyCollection<FragmentDefinition>? fragments)
+        {
+            if (fragments == null)
+                return;
+            
+            var fragmentName = fragment.FragmentName;
+            if (visitedFrags.Contains(fragmentName))
+                return;
 
-                if (!spreadNodes.Any())
-                    return;
+            var spreadNodes = GetFragmentSpreads(fragment.SelectionSet)
+                .ToArray();
 
-                spreadPathIndexByName[fragmentName] = spreadPath.Count;
+            if (!spreadNodes.Any())
+                return;
 
-                for (var i = 0; i < spreadNodes.Length; i++)
-                {
-                    var spreadNode = spreadNodes[i];
-                    var spreadName = spreadNode.FragmentName;
-                    var cycleIndex = spreadPathIndexByName.ContainsKey(spreadName)
-                        ? spreadPathIndexByName[spreadName]
-                        : default;
+            spreadPathIndexByName[fragmentName] = spreadPath.Count;
 
-                    spreadPath.Push(spreadNode);
+            for (var i = 0; i < spreadNodes.Length; i++)
+            {
+                var spreadNode = spreadNodes[i];
+                var spreadName = spreadNode.FragmentName;
+                var cycleIndex = spreadPathIndexByName.ContainsKey(spreadName)
+                    ? spreadPathIndexByName[spreadName]
+                    : default;
 
-                    if (cycleIndex == null)
-                    {
-                        var spreadFragment = fragments.SingleOrDefault(f => f.FragmentName == spreadName);
-
-                        if (spreadFragment != null)
-                            DetectCycleRecursive(
-                                spreadFragment,
-                                spreadPath,
-                                visitedFrags,
-                                spreadPathIndexByName,
-                                context,
-                                fragments);
-                    }
-                    else
-                    {
-                        var cyclePath = spreadPath.Skip(cycleIndex.Value).ToList();
-                        var fragmentNames = cyclePath.Take(cyclePath.Count() - 1)
-                            .Select(s => s.FragmentName.ToString())
-                            .ToArray();
+                spreadPath.Push(spreadNode);
 
-                        context.Error(
-                            ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles,
-                            CycleErrorMessage(spreadName, fragmentNames),
-                            cyclePath);
-                    }
+                if (cycleIndex == null)
+                {
+                    var spreadFragment = fragments.SingleOrDefault(f => f.FragmentName == spreadName);
+
+                    if (spreadFragment != null)
+                        DetectCycleRecursive(
+                            spreadFragment,
+                            spreadPath,
+                            visitedFrags,
+                            spreadPathIndexByName,
+                            context,
+                            fragments);
+                }
+                else
+                {
+                    var cyclePath = spreadPath.Skip(cycleIndex.Value).ToList();
+                    var fragmentNames = cyclePath.Take(cyclePath.Count() - 1)
+                        .Select(s => s.FragmentName.ToString())
+                        .ToArray();
 
-                    spreadPath.Pop();
+                    context.Error(
+                        ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles,
+                        CycleErrorMessage(spreadName, fragmentNames),
+                        cyclePath);
                 }
 
-                spreadPathIndexByName[fragmentName] = null;
+                spreadPath.Pop();
             }
+
+            spreadPathIndexByName[fragmentName] = null;
         }
+    }
 
-        /// <summary>
-        ///     For each spread (named or inline) defined in the document.
-        ///     Let fragment be the target of spread
-        ///     Let fragmentType be the type condition of fragment
-        ///     Let parentType be the type of the selection set containing spread
-        ///     Let applicableTypes be the intersection of GetPossibleTypes(fragmentType) and GetPossibleTypes(parentType)
-        ///     applicableTypes must not be empty.
-        /// </summary>
-        /// <returns></returns>
-        public static CombineRule R5523FragmentSpreadIsPossible()
+    /// <summary>
+    ///     For each spread (named or inline) defined in the document.
+    ///     Let fragment be the target of spread
+    ///     Let fragmentType be the type condition of fragment
+    ///     Let parentType be the type of the selection set containing spread
+    ///     Let applicableTypes be the intersection of GetPossibleTypes(fragmentType) and GetPossibleTypes(parentType)
+    ///     applicableTypes must not be empty.
+    /// </summary>
+    /// <returns></returns>
+    public static CombineRule R5523FragmentSpreadIsPossible()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
-            {
-                var fragments = context.Document.FragmentDefinitions
-                    ?.ToDictionary(f => f.FragmentName);
+            var fragments = context.Document.FragmentDefinitions
+                ?.ToDictionary(f => f.FragmentName)
+                ?? new Dictionary<Name, FragmentDefinition>(0);
 
-                rule.EnterFragmentSpread += node =>
+            rule.EnterFragmentSpread += node =>
+            {
+                var fragment = fragments[node.FragmentName];
+                var fragmentType = Ast.UnwrapAndResolveType(context.Schema, fragment.TypeCondition);
+                var parentType = context.Tracker.ParentType;
+                if (fragmentType is not null && parentType is not null)
                 {
-                    var fragment = fragments[node.FragmentName];
-                    var fragmentType = Ast.TypeFromAst(context.Schema, fragment.TypeCondition);
-                    var parentType = context.Tracker.GetParentType();
-                    var applicableTypes = GetPossibleTypes(fragmentType, context.Schema)
-                        .Intersect(GetPossibleTypes(parentType, context.Schema));
+                    bool applicableTypes = false;
+                    var parentTypePossibleTypes = GetPossibleTypes(parentType, context.Schema);
+                    var fragmentTypePossibleTypes = GetPossibleTypes(fragmentType, context.Schema);
 
-                    if (!applicableTypes.Any())
+                    if (fragmentType is InterfaceDefinition && parentType is InterfaceDefinition)
+                    {
+                        applicableTypes = parentTypePossibleTypes.Contains(fragmentType);
+                    }
+                    else
+                    {
+                        applicableTypes =
+                            fragmentTypePossibleTypes.Intersect(parentTypePossibleTypes).Any();
+                    }
+
+                    if (!applicableTypes)
                         context.Error(
                             ValidationErrorCodes.R5523FragmentSpreadIsPossible,
                             "Fragments are declared on a type and will only apply " +
@@ -790,12 +792,28 @@ public static CombineRule R5523FragmentSpreadIsPossible()
                             "the parent type. " +
                             $"FragmentSpread: '{node.FragmentName}'",
                             node);
-                };
+                }
+                else
+                {
+                    context.Error(
+                        ValidationErrorCodes.R5523FragmentSpreadIsPossible,
+                        "Fragments are declared on a type and will only apply " +
+                        "when the runtime object type matches the type condition. They " +
+                        "also are spread within the context of a parent type. A fragment " +
+                        "spread is only valid if its type condition could ever apply within " +
+                        "the parent type. " +
+                        $"FragmentSpread: '{node.FragmentName}'",
+                        node);
+                }
+            };
+
+            rule.EnterInlineFragment += node =>
+            {
+                var fragmentType = context.Tracker.CurrentType;
+                var parentType = context.Tracker.ParentType;
 
-                rule.EnterInlineFragment += node =>
+                if (fragmentType is not null && parentType is not null)
                 {
-                    var fragmentType = Ast.TypeFromAst(context.Schema, node.TypeCondition);
-                    var parentType = context.Tracker.GetParentType();
                     var applicableTypes = GetPossibleTypes(fragmentType, context.Schema)
                         .Intersect(GetPossibleTypes(parentType, context.Schema));
 
@@ -808,684 +826,696 @@ public static CombineRule R5523FragmentSpreadIsPossible()
                             "spread is only valid if its type condition could ever apply within " +
                             "the parent type.",
                             node);
-                };
-            };
-
-            ObjectDefinition[] GetPossibleTypes(IType type, ISchema schema)
-            {
-                switch (type)
+                }
+                else
                 {
-                    case ObjectDefinition ObjectDefinition:
-                        return new[] {ObjectDefinition};
-                    case InterfaceDefinition interfaceType:
-                        return schema.GetPossibleTypes(interfaceType).ToArray();
-                    case UnionDefinition UnionDefinition:
-                        return schema.GetPossibleTypes(UnionDefinition).ToArray();
-                    default: return new ObjectDefinition[] { };
+                    context.Error(
+                        ValidationErrorCodes.R5523FragmentSpreadIsPossible,
+                        "Fragments are declared on a type and will only apply " +
+                        "when the runtime object type matches the type condition. They " +
+                        "also are spread within the context of a parent type. A fragment " +
+                        "spread is only valid if its type condition could ever apply within " +
+                        "the parent type.",
+                        node);
                 }
+            };
+        };
+        
+        IEnumerable<TypeDefinition> GetPossibleTypes(TypeDefinition type, ISchema schema)
+        {
+            switch (type)
+            {
+                case ObjectDefinition objectDefinition:
+                    return new[] {objectDefinition};
+                case InterfaceDefinition interfaceType:
+                    return schema.GetPossibleTypes(interfaceType);
+                case UnionDefinition unionDefinition:
+                    return schema.GetPossibleTypes(unionDefinition);
+                default: 
+                    return Enumerable.Empty<TypeDefinition>();
             }
         }
-
-        public static CombineRule R561ValuesOfCorrectType()
+    }
+    /*
+    public static CombineRule R561ValuesOfCorrectType()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            //todo: there's an objectkind for nullvalue but no type
+            //rule.EnterNullValue += node => { };
+
+            rule.EnterListValue += node =>
             {
-                //todo: there's an objectkind for nullvalue but no type
-                //rule.EnterNullValue += node => { };
+                var type = context.Tracker.GetNullableType(
+                    context.Tracker.GetParentInputType());
 
-                rule.EnterListValue += node =>
-                {
-                    var type = context.Tracker.GetNullableType(
-                        context.Tracker.GetParentInputType());
+                if (!(type is ListType)) IsValidScalar(context, node);
+            };
+            rule.EnterObjectValue += node =>
+            {
+                var type = context.Tracker.GetNamedType(
+                    context.Tracker.GetInputType());
 
-                    if (!(type is ListType)) IsValidScalar(context, node);
-                };
-                rule.EnterObjectValue += node =>
+                if (!(type is InputObjectDefinition inputType))
                 {
-                    var type = context.Tracker.GetNamedType(
-                        context.Tracker.GetInputType());
-
-                    if (!(type is InputObjectDefinition inputType))
-                    {
-                        IsValidScalar(context, node);
-                        // return false;
-                        return;
-                    }
+                    IsValidScalar(context, node);
+                    // return false;
+                    return;
+                }
 
-                    var fieldNodeMap = node.Fields.ToDictionary(
-                        f => f.Name);
+                var fieldNodeMap = node.Fields.ToDictionary(
+                    f => f.Name);
 
-                    foreach (var fieldDef in context.Schema.GetInputFields(
-                        inputType.Name))
-                    {
-                        var fieldNode = fieldNodeMap.ContainsKey(fieldDef.Key);
-                        if (!fieldNode && fieldDef.Value.Type is NonNullType NonNullType)
-                            context.Error(
-                                ValidationErrorCodes.R561ValuesOfCorrectType,
-                                RequiredFieldMessage(
-                                    type.ToString(),
-                                    fieldDef.Key,
-                                    NonNullType.ToString()),
-                                (INode) node);
-                    }
-                };
-                rule.EnterObjectField += node =>
+                foreach (var fieldDef in context.Schema.GetInputFields(
+                    inputType.Name))
                 {
-                    var parentType = context.Tracker
-                        .GetNamedType(context.Tracker.GetParentInputType());
-
-                    var fieldType = context.Tracker.GetInputType();
-                    if (fieldType == null && parentType is InputObjectDefinition)
+                    var fieldNode = fieldNodeMap.ContainsKey(fieldDef.Key);
+                    if (!fieldNode && fieldDef.Value.Type is NonNullType NonNullType)
                         context.Error(
                             ValidationErrorCodes.R561ValuesOfCorrectType,
-                            UnknownFieldMessage(
-                                parentType.ToString(),
-                                node.Name,
-                                string.Empty),
-                            node);
-                };
-                rule.EnterEnumValue += node =>
-                {
-                    var maybeEnumType = context.Tracker.GetNamedType(
-                        context.Tracker.GetInputType());
+                            RequiredFieldMessage(
+                                type.ToString(),
+                                fieldDef.Key,
+                                NonNullType.ToString()),
+                            (INode) node);
+                }
+            };
+            rule.EnterObjectField += node =>
+            {
+                var parentType = context.Tracker
+                    .GetNamedType(context.Tracker.GetParentInputType());
 
-                    if (!(maybeEnumType is EnumDefinition type))
-                        IsValidScalar(context, node);
-                    
-                    else if (type.ParseValue(node) == null)
-                        context.Error(
-                            ValidationErrorCodes.R561ValuesOfCorrectType,
-                            BadValueMessage(
-                                type.Name,
-                                node.ToString(),
-                                string.Empty));
-                };
-                rule.EnterIntValue += node => IsValidScalar(context, node);
-                rule.EnterFloatValue += node => IsValidScalar(context, node);
-                rule.EnterStringValue += node => IsValidScalar(context, node);
-                rule.EnterBooleanValue += node => IsValidScalar(context, node);
+                var fieldType = context.Tracker.GetInputType();
+                if (fieldType == null && parentType is InputObjectDefinition)
+                    context.Error(
+                        ValidationErrorCodes.R561ValuesOfCorrectType,
+                        UnknownFieldMessage(
+                            parentType.ToString(),
+                            node.Name,
+                            string.Empty),
+                        node);
             };
+            rule.EnterEnumValue += node =>
+            {
+                var maybeEnumType = context.Tracker.GetNamedType(
+                    context.Tracker.GetInputType());
 
-            string BadValueMessage(
-                string typeName,
-                string valueName,
-                string message
-            )
+                if (!(maybeEnumType is EnumDefinition type))
+                    IsValidScalar(context, node);
+                
+                else if (type.ParseValue(node) == null)
+                    context.Error(
+                        ValidationErrorCodes.R561ValuesOfCorrectType,
+                        BadValueMessage(
+                            type.Name,
+                            node.ToString(),
+                            string.Empty));
+            };
+            rule.EnterIntValue += node => IsValidScalar(context, node);
+            rule.EnterFloatValue += node => IsValidScalar(context, node);
+            rule.EnterStringValue += node => IsValidScalar(context, node);
+            rule.EnterBooleanValue += node => IsValidScalar(context, node);
+        };
+
+        string BadValueMessage(
+            string typeName,
+            string valueName,
+            string message
+        )
+        {
+            return $"Expected type '{typeName}', found '{valueName}' " +
+                   message;
+        }
+
+        string RequiredFieldMessage(
+            string typeName,
+            string fieldName,
+            string fieldTypeName
+        )
+        {
+            return $"Field '{typeName}.{fieldName}' of required type " +
+                   $"'{fieldTypeName}' was not provided.";
+        }
+
+        string UnknownFieldMessage(
+            string typeName,
+            string fieldName,
+            string message
+        )
+        {
+            return $"Field '{fieldName}' is not defined by type '{typeName}' " +
+                   message;
+        }
+
+        void IsValidScalar(
+            IRuleVisitorContext context,
+            ValueBase node)
+        {
+            var locationType = context.Tracker.GetInputType();
+
+            if (locationType == null)
+                return;
+
+            var maybeScalarType = context
+                .Tracker
+                .GetNamedType(locationType);
+
+            if (!(maybeScalarType is ScalarType type))
             {
-                return $"Expected type '{typeName}', found '{valueName}' " +
-                       message;
+                context.Error(
+                    ValidationErrorCodes.R561ValuesOfCorrectType,
+                    BadValueMessage(
+                        maybeScalarType?.ToString(),
+                        node.ToString(),
+                        string.Empty),
+                    node);
+
+                return;
             }
 
-            string RequiredFieldMessage(
-                string typeName,
-                string fieldName,
-                string fieldTypeName
-            )
+            try
             {
-                return $"Field '{typeName}.{fieldName}' of required type " +
-                       $"'{fieldTypeName}' was not provided.";
+                var converter = context.Schema.GetValueConverter(type.Name);
+                converter.ParseLiteral(node);
             }
-
-            string UnknownFieldMessage(
-                string typeName,
-                string fieldName,
-                string message
-            )
+            catch (Exception e)
             {
-                return $"Field '{fieldName}' is not defined by type '{typeName}' " +
-                       message;
+                context.Error(
+                    ValidationErrorCodes.R561ValuesOfCorrectType,
+                    BadValueMessage(locationType?.ToString(),
+                        node.ToString(),
+                        e.ToString()),
+                    node);
             }
+        }
+    }
 
-            void IsValidScalar(
-                IRuleVisitorContext context,
-                ValueBase node)
+    public static CombineRule R562InputObjectFieldNames()
+    {
+        return (context, rule) =>
+        {
+            rule.EnterObjectField += inputField =>
             {
-                var locationType = context.Tracker.GetInputType();
+                var inputFieldName = inputField.Name;
 
-                if (locationType == null)
+                if (!(context.Tracker
+                    .GetParentInputType() is InputObjectDefinition parentType))
                     return;
 
-                var maybeScalarType = context
-                    .Tracker
-                    .GetNamedType(locationType);
+                var inputFieldDefinition = context.Schema
+                    .GetInputField(parentType.Name, inputFieldName);
 
-                if (!(maybeScalarType is ScalarType type))
-                {
+                if (inputFieldDefinition == null)
                     context.Error(
-                        ValidationErrorCodes.R561ValuesOfCorrectType,
-                        BadValueMessage(
-                            maybeScalarType?.ToString(),
-                            node.ToString(),
-                            string.Empty),
-                        node);
+                        ValidationErrorCodes.R562InputObjectFieldNames,
+                        "Every input field provided in an input object " +
+                        "value must be defined in the set of possible fields of " +
+                        "that input object’s expected type. " +
+                        $"Field: '{inputField.Name}'",
+                        inputField);
+            };
+        };
+    }
 
-                    return;
-                }
+    public static CombineRule R563InputObjectFieldUniqueness()
+    {
+        return (context, rule) =>
+        {
+            rule.EnterObjectValue += node =>
+            {
+                var fields = node.Fields.ToList();
 
-                try
-                {
-                    var converter = context.Schema.GetValueConverter(type.Name);
-                    converter.ParseLiteral(node);
-                }
-                catch (Exception e)
+                foreach (var inputField in fields)
                 {
-                    context.Error(
-                        ValidationErrorCodes.R561ValuesOfCorrectType,
-                        BadValueMessage(locationType?.ToString(),
-                            node.ToString(),
-                            e.ToString()),
-                        node);
+                    var name = inputField.Name;
+                    if (fields.Count(f => f.Name == name) > 1)
+                        context.Error(
+                            ValidationErrorCodes.R563InputObjectFieldUniqueness,
+                            "Input objects must not contain more than one field " +
+                            "of the same name, otherwise an ambiguity would exist which " +
+                            "includes an ignored portion of syntax. " +
+                            $"Field: '{name}'",
+                            fields.Where(f => f.Name == name));
                 }
-            }
-        }
+            };
+        };
+    }
 
-        public static CombineRule R562InputObjectFieldNames()
+    public static CombineRule R564InputObjectRequiredFields()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterObjectValue += node =>
             {
-                rule.EnterObjectField += inputField =>
-                {
-                    var inputFieldName = inputField.Name;
+                var inputObject = context.Tracker.GetInputType() as InputObjectDefinition;
 
-                    if (!(context.Tracker
-                        .GetParentInputType() is InputObjectDefinition parentType))
-                        return;
+                if (inputObject == null)
+                    return;
 
-                    var inputFieldDefinition = context.Schema
-                        .GetInputField(parentType.Name, inputFieldName);
+                var fields = node.Fields.ToDictionary(f => f.Name);
+                var fieldDefinitions = context.Schema.GetInputFields(inputObject.Name);
 
-                    if (inputFieldDefinition == null)
-                        context.Error(
-                            ValidationErrorCodes.R562InputObjectFieldNames,
-                            "Every input field provided in an input object " +
-                            "value must be defined in the set of possible fields of " +
-                            "that input object’s expected type. " +
-                            $"Field: '{inputField.Name}'",
-                            inputField);
-                };
-            };
-        }
-
-        public static CombineRule R563InputObjectFieldUniqueness()
-        {
-            return (context, rule) =>
-            {
-                rule.EnterObjectValue += node =>
+                foreach (var fieldDefinition in fieldDefinitions)
                 {
-                    var fields = node.Fields.ToList();
+                    var type = fieldDefinition.Value.Type;
+                    var defaultValue = fieldDefinition.Value.DefaultValue;
 
-                    foreach (var inputField in fields)
+                    if (type is NonNullType NonNullType && defaultValue == null)
                     {
-                        var name = inputField.Name;
-                        if (fields.Count(f => f.Name == name) > 1)
+                        var fieldName = fieldDefinition.Key;
+                        if (!fields.TryGetValue(fieldName, out var field))
+                        {
                             context.Error(
-                                ValidationErrorCodes.R563InputObjectFieldUniqueness,
-                                "Input objects must not contain more than one field " +
-                                "of the same name, otherwise an ambiguity would exist which " +
-                                "includes an ignored portion of syntax. " +
-                                $"Field: '{name}'",
-                                fields.Where(f => f.Name == name));
+                                ValidationErrorCodes.R564InputObjectRequiredFields,
+                                "Input object fields may be required. Much like a field " +
+                                "may have required arguments, an input object may have required " +
+                                "fields. An input field is required if it has a non‐null type and " +
+                                "does not have a default value. Otherwise, the input object field " +
+                                "is optional. " +
+                                $"Field '{NonNullType}.{fieldName}' is required.",
+                                (INode) node);
+
+                            return;
+                        }
+
+                        if (field.Value.Kind == NodeKind.NullValue)
+                            context.Error(
+                                ValidationErrorCodes.R564InputObjectRequiredFields,
+                                "Input object fields may be required. Much like a field " +
+                                "may have required arguments, an input object may have required " +
+                                "fields. An input field is required if it has a non‐null type and " +
+                                "does not have a default value. Otherwise, the input object field " +
+                                "is optional. " +
+                                $"Field '{NonNullType}.{field}' value cannot be null.",
+                                node, field);
                     }
-                };
+                }
             };
-        }
+        };
+    }
 
-        public static CombineRule R564InputObjectRequiredFields()
+    /// <summary>
+    ///     5.7.1, 5.7.3
+    /// </summary>
+    /// <returns></returns>
+    public static CombineRule R571And573Directives()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            rule.EnterDirective += directive =>
             {
-                rule.EnterObjectValue += node =>
-                {
-                    var inputObject = context.Tracker.GetInputType() as InputObjectDefinition;
+                var directiveName = directive.Name;
+                var directiveDefinition = context.Schema.GetDirectiveType(directiveName);
 
-                    if (inputObject == null)
-                        return;
+                if (directiveDefinition == null)
+                    context.Error(
+                        ValidationErrorCodes.R571DirectivesAreDefined,
+                        "GraphQL servers define what directives they support. " +
+                        "For each usage of a directive, the directive must be available " +
+                        "on that server. " +
+                        $"Directive: '{directiveName}'",
+                        directive);
+            };
 
-                    var fields = node.Fields.ToDictionary(f => f.Name);
-                    var fieldDefinitions = context.Schema.GetInputFields(inputObject.Name);
+            rule.EnterOperationDefinition += node => CheckDirectives(context, node.Directives);
+            rule.EnterFieldSelection += node => CheckDirectives(context, node.Directives);
+            rule.EnterFragmentDefinition += node => CheckDirectives(context, node.Directives);
+            rule.EnterFragmentSpread += node => CheckDirectives(context, node.Directives);
+            rule.EnterInlineFragment += node => CheckDirectives(context, node.Directives);
+        };
 
-                    foreach (var fieldDefinition in fieldDefinitions)
-                    {
-                        var type = fieldDefinition.Value.Type;
-                        var defaultValue = fieldDefinition.Value.DefaultValue;
+        // 5.7.3
+        void CheckDirectives(IRuleVisitorContext context, IEnumerable<Directive> directives)
+        {
+            if (directives == null)
+                return;
 
-                        if (type is NonNullType NonNullType && defaultValue == null)
-                        {
-                            var fieldName = fieldDefinition.Key;
-                            if (!fields.TryGetValue(fieldName, out var field))
-                            {
-                                context.Error(
-                                    ValidationErrorCodes.R564InputObjectRequiredFields,
-                                    "Input object fields may be required. Much like a field " +
-                                    "may have required arguments, an input object may have required " +
-                                    "fields. An input field is required if it has a non‐null type and " +
-                                    "does not have a default value. Otherwise, the input object field " +
-                                    "is optional. " +
-                                    $"Field '{NonNullType}.{fieldName}' is required.",
-                                    (INode) node);
-
-                                return;
-                            }
-
-                            if (field.Value.Kind == NodeKind.NullValue)
-                                context.Error(
-                                    ValidationErrorCodes.R564InputObjectRequiredFields,
-                                    "Input object fields may be required. Much like a field " +
-                                    "may have required arguments, an input object may have required " +
-                                    "fields. An input field is required if it has a non‐null type and " +
-                                    "does not have a default value. Otherwise, the input object field " +
-                                    "is optional. " +
-                                    $"Field '{NonNullType}.{field}' value cannot be null.",
-                                    node, field);
-                        }
-                    }
-                };
-            };
+            var knownDirectives = new List<string>();
+
+            foreach (var directive in directives)
+            {
+                if (knownDirectives.Contains(directive.Name))
+                    context.Error(
+                        ValidationErrorCodes.R573DirectivesAreUniquePerLocation,
+                        "For each usage of a directive, the directive must be used in a " +
+                        "location that the server has declared support for. " +
+                        $"Directive '{directive.Name.Value}' is used multiple times on same location",
+                        directive);
+
+                knownDirectives.Add(directive.Name);
+            }
         }
+    }
 
-        /// <summary>
-        ///     5.7.1, 5.7.3
-        /// </summary>
-        /// <returns></returns>
-        public static CombineRule R571And573Directives()
+    public static CombineRule R572DirectivesAreInValidLocations()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
-            {
-                rule.EnterDirective += directive =>
-                {
-                    var directiveName = directive.Name;
-                    var directiveDefinition = context.Schema.GetDirectiveType(directiveName);
+            rule.EnterOperationDefinition += node => CheckDirectives(context, node, node.Directives);
+            rule.EnterFieldSelection += node => CheckDirectives(context, node, node.Directives);
+            rule.EnterFragmentDefinition += node => CheckDirectives(context, node, node.Directives);
+            rule.EnterFragmentSpread += node => CheckDirectives(context, node, node.Directives);
+            rule.EnterInlineFragment += node => CheckDirectives(context, node, node.Directives);
+        };
 
-                    if (directiveDefinition == null)
-                        context.Error(
-                            ValidationErrorCodes.R571DirectivesAreDefined,
-                            "GraphQL servers define what directives they support. " +
-                            "For each usage of a directive, the directive must be available " +
-                            "on that server. " +
-                            $"Directive: '{directiveName}'",
-                            directive);
-                };
-
-                rule.EnterOperationDefinition += node => CheckDirectives(context, node.Directives);
-                rule.EnterFieldSelection += node => CheckDirectives(context, node.Directives);
-                rule.EnterFragmentDefinition += node => CheckDirectives(context, node.Directives);
-                rule.EnterFragmentSpread += node => CheckDirectives(context, node.Directives);
-                rule.EnterInlineFragment += node => CheckDirectives(context, node.Directives);
-            };
+        // 5.7.2
+        void CheckDirectives(
+            IRuleVisitorContext context,
+            INode node,
+            IEnumerable<Directive> directives)
+        {
+            if (directives == null)
+                return;
 
-            // 5.7.3
-            void CheckDirectives(IRuleVisitorContext context, IEnumerable<Directive> directives)
+            var currentLocation = GetLocation(node);
+            foreach (var directive in directives)
             {
-                if (directives == null)
-                    return;
+                var directiveType = context.Schema.GetDirectiveType(
+                    directive.Name);
 
-                var knownDirectives = new List<string>();
+                var validLocations = directiveType.Locations
+                    .ToArray();
 
-                foreach (var directive in directives)
+                if (!validLocations.Contains(currentLocation))
                 {
-                    if (knownDirectives.Contains(directive.Name))
-                        context.Error(
-                            ValidationErrorCodes.R573DirectivesAreUniquePerLocation,
-                            "For each usage of a directive, the directive must be used in a " +
-                            "location that the server has declared support for. " +
-                            $"Directive '{directive.Name.Value}' is used multiple times on same location",
-                            directive);
-
-                    knownDirectives.Add(directive.Name);
+                    context.Error(
+                        ValidationErrorCodes.R572DirectivesAreInValidLocations,
+                        $"GraphQL servers define what directives they support " +
+                        $"and where they support them. For each usage of a directive, " +
+                        $"the directive must be used in a location that the server has " +
+                        $"declared support for. " +
+                        $"Directive '{directive.Name.Value}' is in invalid location " +
+                        $"'{currentLocation}'. Valid locations: '{string.Join(",", validLocations)}'",
+                        directive);
                 }
             }
         }
 
-        public static CombineRule R572DirectivesAreInValidLocations()
+        DirectiveLocation GetLocation(INode appliedTo)
         {
-            return (context, rule) =>
+            switch (appliedTo.Kind)
             {
-                rule.EnterOperationDefinition += node => CheckDirectives(context, node, node.Directives);
-                rule.EnterFieldSelection += node => CheckDirectives(context, node, node.Directives);
-                rule.EnterFragmentDefinition += node => CheckDirectives(context, node, node.Directives);
-                rule.EnterFragmentSpread += node => CheckDirectives(context, node, node.Directives);
-                rule.EnterInlineFragment += node => CheckDirectives(context, node, node.Directives);
-            };
+                case NodeKind.OperationDefinition:
+                    switch (((OperationDefinition) appliedTo).Operation)
+                    {
+                        case OperationType.Query:
+                            return DirectiveLocation.QUERY;
+                        case OperationType.Mutation:
+                            return DirectiveLocation.MUTATION;
+                        case OperationType.Subscription:
+                            return DirectiveLocation.SUBSCRIPTION;
+                    }
 
-            // 5.7.2
-            void CheckDirectives(
-                IRuleVisitorContext context,
-                INode node,
-                IEnumerable<Directive> directives)
+                    break;
+                case NodeKind.FieldSelection:
+                    return DirectiveLocation.FIELD;
+                case NodeKind.FragmentSpread:
+                    return DirectiveLocation.FRAGMENT_SPREAD;
+                case NodeKind.InlineFragment:
+                    return DirectiveLocation.INLINE_FRAGMENT;
+                case NodeKind.FragmentDefinition:
+                    return DirectiveLocation.FRAGMENT_DEFINITION;
+                case NodeKind.VariableDefinition:
+                    throw new InvalidOperationException($"Not supported");
+                case NodeKind.SchemaDefinition:
+                    //case NodeKind.SCHEMA_EXTENSION:
+                    return DirectiveLocation.SCHEMA;
+                case NodeKind.ScalarDefinition:
+                    //case NodeKind.SCALAR_TYPE_EXTENSION:
+                    return DirectiveLocation.SCALAR;
+                case NodeKind.ObjectDefinition:
+                    //case NodeKind.OBJECT_TYPE_EXTENSION:
+                    return DirectiveLocation.OBJECT;
+                case NodeKind.FieldDefinition:
+                    return DirectiveLocation.FIELD_DEFINITION;
+                case NodeKind.InterfaceDefinition:
+                    //case NodeKind.INTERFACE_TYPE_EXTENSION:
+                    return DirectiveLocation.INTERFACE;
+                case NodeKind.UnionDefinition:
+                    //case NodeKind.UNION_TYPE_EXTENSION:
+                    return DirectiveLocation.UNION;
+                case NodeKind.EnumDefinition:
+                    //case NodeKind.ENUM_TYPE_EXTENSION:
+                    return DirectiveLocation.ENUM;
+                case NodeKind.EnumValueDefinition:
+                    return DirectiveLocation.ENUM_VALUE;
+                case NodeKind.InputObjectDefinition:
+                    //case NodeKind.INPUT_OBJECT_TYPE_EXTENSION:
+                    return DirectiveLocation.INPUT_OBJECT;
+                case NodeKind.Argument:
+                    return DirectiveLocation.ARGUMENT_DEFINITION; //todo: is this correct?
+                case NodeKind.InputValueDefinition:
+                    return DirectiveLocation.INPUT_FIELD_DEFINITION;
+            }
+
+            throw new InvalidOperationException($"Not supported location: {appliedTo.Kind}");
+        }
+    }
+
+    /// <summary>
+    ///     5.8.1, 5.8.2
+    /// </summary>
+    /// <returns></returns>
+    public static CombineRule R581And582Variables()
+    {
+        return (context, rule) =>
+        {
+            rule.EnterOperationDefinition += node =>
             {
-                if (directives == null)
+                if (node.VariableDefinitions == null)
                     return;
 
-                var currentLocation = GetLocation(node);
-                foreach (var directive in directives)
+                var knownVariables = new List<string>();
+                foreach (var variableUsage in node.VariableDefinitions)
                 {
-                    var directiveType = context.Schema.GetDirectiveType(
-                        directive.Name);
-
-                    var validLocations = directiveType.Locations
-                        .ToArray();
+                    var variable = variableUsage.Variable;
+                    var variableName = variable.Name;
 
-                    if (!validLocations.Contains(currentLocation))
-                    {
+                    // 5.8.1 Variable Uniqueness
+                    if (knownVariables.Contains(variableName))
                         context.Error(
-                            ValidationErrorCodes.R572DirectivesAreInValidLocations,
-                            $"GraphQL servers define what directives they support " +
-                            $"and where they support them. For each usage of a directive, " +
-                            $"the directive must be used in a location that the server has " +
-                            $"declared support for. " +
-                            $"Directive '{directive.Name.Value}' is in invalid location " +
-                            $"'{currentLocation}'. Valid locations: '{string.Join(",", validLocations)}'",
-                            directive);
-                    }
-                }
-            }
+                            ValidationErrorCodes.R581VariableUniqueness,
+                            "If any operation defines more than one " +
+                            "variable with the same name, it is ambiguous and " +
+                            "invalid. It is invalid even if the type of the " +
+                            "duplicate variable is the same. " +
+                            $"Variable: '{variableName}'",
+                            node);
 
-            DirectiveLocation GetLocation(INode appliedTo)
-            {
-                switch (appliedTo.Kind)
-                {
-                    case NodeKind.OperationDefinition:
-                        switch (((OperationDefinition) appliedTo).Operation)
-                        {
-                            case OperationType.Query:
-                                return DirectiveLocation.QUERY;
-                            case OperationType.Mutation:
-                                return DirectiveLocation.MUTATION;
-                            case OperationType.Subscription:
-                                return DirectiveLocation.SUBSCRIPTION;
-                        }
+                    knownVariables.Add(variableName);
 
-                        break;
-                    case NodeKind.FieldSelection:
-                        return DirectiveLocation.FIELD;
-                    case NodeKind.FragmentSpread:
-                        return DirectiveLocation.FRAGMENT_SPREAD;
-                    case NodeKind.InlineFragment:
-                        return DirectiveLocation.INLINE_FRAGMENT;
-                    case NodeKind.FragmentDefinition:
-                        return DirectiveLocation.FRAGMENT_DEFINITION;
-                    case NodeKind.VariableDefinition:
-                        throw new InvalidOperationException($"Not supported");
-                    case NodeKind.SchemaDefinition:
-                        //case NodeKind.SCHEMA_EXTENSION:
-                        return DirectiveLocation.SCHEMA;
-                    case NodeKind.ScalarDefinition:
-                        //case NodeKind.SCALAR_TYPE_EXTENSION:
-                        return DirectiveLocation.SCALAR;
-                    case NodeKind.ObjectDefinition:
-                        //case NodeKind.OBJECT_TYPE_EXTENSION:
-                        return DirectiveLocation.OBJECT;
-                    case NodeKind.FieldDefinition:
-                        return DirectiveLocation.FIELD_DEFINITION;
-                    case NodeKind.InterfaceDefinition:
-                        //case NodeKind.INTERFACE_TYPE_EXTENSION:
-                        return DirectiveLocation.INTERFACE;
-                    case NodeKind.UnionDefinition:
-                        //case NodeKind.UNION_TYPE_EXTENSION:
-                        return DirectiveLocation.UNION;
-                    case NodeKind.EnumDefinition:
-                        //case NodeKind.ENUM_TYPE_EXTENSION:
-                        return DirectiveLocation.ENUM;
-                    case NodeKind.EnumValueDefinition:
-                        return DirectiveLocation.ENUM_VALUE;
-                    case NodeKind.InputObjectDefinition:
-                        //case NodeKind.INPUT_OBJECT_TYPE_EXTENSION:
-                        return DirectiveLocation.INPUT_OBJECT;
-                    case NodeKind.Argument:
-                        return DirectiveLocation.ARGUMENT_DEFINITION; //todo: is this correct?
-                    case NodeKind.InputValueDefinition:
-                        return DirectiveLocation.INPUT_FIELD_DEFINITION;
+                    // 5.8.2
+                    var variableType = Ast.TypeFromAst(context.Schema, variableUsage.Type);
+                    if (!TypeIs.IsInputType(variableType))
+                        context.Error(
+                            ValidationErrorCodes.R582VariablesAreInputTypes,
+                            "Variables can only be input types. Objects, unions, " +
+                            "and interfaces cannot be used as inputs.. " +
+                            $"Given type of '{variableName}' is '{variableType}'",
+                            node);
                 }
+            };
+        };
+    }
 
-                throw new InvalidOperationException($"Not supported location: {appliedTo.Kind}");
-            }
-        }
-
-        /// <summary>
-        ///     5.8.1, 5.8.2
-        /// </summary>
-        /// <returns></returns>
-        public static CombineRule R581And582Variables()
+    public static CombineRule R583AllVariableUsesDefined()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var variableDefinitions = new List<string>();
+            rule.EnterOperationDefinition += node =>
             {
-                rule.EnterOperationDefinition += node =>
-                {
-                    if (node.VariableDefinitions == null)
-                        return;
-
-                    var knownVariables = new List<string>();
-                    foreach (var variableUsage in node.VariableDefinitions)
-                    {
-                        var variable = variableUsage.Variable;
-                        var variableName = variable.Name;
-
-                        // 5.8.1 Variable Uniqueness
-                        if (knownVariables.Contains(variableName))
-                            context.Error(
-                                ValidationErrorCodes.R581VariableUniqueness,
-                                "If any operation defines more than one " +
-                                "variable with the same name, it is ambiguous and " +
-                                "invalid. It is invalid even if the type of the " +
-                                "duplicate variable is the same. " +
-                                $"Variable: '{variableName}'",
-                                node);
-
-                        knownVariables.Add(variableName);
-
-                        // 5.8.2
-                        var variableType = Ast.TypeFromAst(context.Schema, variableUsage.Type);
-                        if (!TypeIs.IsInputType(variableType))
-                            context.Error(
-                                ValidationErrorCodes.R582VariablesAreInputTypes,
-                                "Variables can only be input types. Objects, unions, " +
-                                "and interfaces cannot be used as inputs.. " +
-                                $"Given type of '{variableName}' is '{variableType}'",
-                                node);
-                    }
-                };
+                variableDefinitions.Clear();
+                if (node.VariableDefinitions != null)
+                    variableDefinitions.AddRange(node.VariableDefinitions.Select(v => v.Variable.Name.Value));
             };
-        }
 
-        public static CombineRule R583AllVariableUsesDefined()
-        {
-            return (context, rule) =>
+            rule.LeaveOperationDefinition += node =>
             {
-                var variableDefinitions = new List<string>();
-                rule.EnterOperationDefinition += node =>
-                {
-                    variableDefinitions.Clear();
-                    if (node.VariableDefinitions != null)
-                        variableDefinitions.AddRange(node.VariableDefinitions.Select(v => v.Variable.Name.Value));
-                };
+                var usages = context.GetRecursiveVariables(node)
+                    .Select(usage => usage.Node.Name.Value)
+                    .ToList();
 
-                rule.LeaveOperationDefinition += node =>
+                foreach (var usage in usages)
                 {
-                    var usages = context.GetRecursiveVariables(node)
-                        .Select(usage => usage.Node.Name.Value)
-                        .ToList();
-
-                    foreach (var usage in usages)
+                    if (!variableDefinitions.Contains(usage))
                     {
-                        if (!variableDefinitions.Contains(usage))
-                        {
-                            context.Error(
-                                ValidationErrorCodes.R583AllVariableUsesDefined,
-                                $"Variables are scoped on a per‐operation basis. " +
-                                $"That means that any variable used within the context of " +
-                                $"an operation must be defined at the top level of that operation. " +
-                                $"Variable use '{usage}' is not defined.",
-                                node
-                            );
-                        }
+                        context.Error(
+                            ValidationErrorCodes.R583AllVariableUsesDefined,
+                            $"Variables are scoped on a per‐operation basis. " +
+                            $"That means that any variable used within the context of " +
+                            $"an operation must be defined at the top level of that operation. " +
+                            $"Variable use '{usage}' is not defined.",
+                            node
+                        );
                     }
-                };
+                }
             };
-        }
+        };
+    }
 
-        public static CombineRule R584AllVariablesUsed()
+    public static CombineRule R584AllVariablesUsed()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var variableDefinitions = new List<VariableDefinition>();
+
+            rule.EnterVariableDefinition += node => variableDefinitions.Add(node);
+            rule.EnterOperationDefinition += node =>
+            {
+                variableDefinitions.Clear();
+            };
+            rule.LeaveOperationDefinition += node =>
             {
-                var variableDefinitions = new List<VariableDefinition>();
+                var usages = context.GetRecursiveVariables(node)
+                    .Select(usage => usage.Node.Name.Value)
+                    .ToList();
 
-                rule.EnterVariableDefinition += node => variableDefinitions.Add(node);
-                rule.EnterOperationDefinition += node =>
-                {
-                    variableDefinitions.Clear();
-                };
-                rule.LeaveOperationDefinition += node =>
+                foreach (var variableDefinition in variableDefinitions)
                 {
-                    var usages = context.GetRecursiveVariables(node)
-                        .Select(usage => usage.Node.Name.Value)
-                        .ToList();
+                    var variableName = variableDefinition.Variable.Name.Value;
 
-                    foreach (var variableDefinition in variableDefinitions)
+                    if (!usages.Contains(variableName))
                     {
-                        var variableName = variableDefinition.Variable.Name.Value;
-
-                        if (!usages.Contains(variableName))
-                        {
-                            context.Error(
-                                ValidationErrorCodes.R584AllVariablesUsed,
-                                $"All variables defined by an operation " +
-                                $"must be used in that operation or a fragment " +
-                                $"transitively included by that operation. Unused " +
-                                $"variables cause a validation error. " +
-                                $"Variable: '{variableName}' is not used.",
-                                variableDefinition
-                                );
-                        }
+                        context.Error(
+                            ValidationErrorCodes.R584AllVariablesUsed,
+                            $"All variables defined by an operation " +
+                            $"must be used in that operation or a fragment " +
+                            $"transitively included by that operation. Unused " +
+                            $"variables cause a validation error. " +
+                            $"Variable: '{variableName}' is not used.",
+                            variableDefinition
+                            );
                     }
-                };
+                }
             };
-        }
+        };
+    }
 
-        public static CombineRule R585AllVariableUsagesAreAllowed()
+    public static CombineRule R585AllVariableUsagesAreAllowed()
+    {
+        return (context, rule) =>
         {
-            return (context, rule) =>
+            var variableDefinitions = new Dictionary<string, VariableDefinition>();
+
+            rule.EnterVariableDefinition += node => 
+                variableDefinitions[node.Variable.Name] = node;
+            rule.EnterOperationDefinition += node =>
+            {
+                variableDefinitions.Clear();
+            };
+            rule.LeaveOperationDefinition += node =>
             {
-                var variableDefinitions = new Dictionary<string, VariableDefinition>();
+                var usages = context.GetRecursiveVariables(node);
 
-                rule.EnterVariableDefinition += node => 
-                    variableDefinitions[node.Variable.Name] = node;
-                rule.EnterOperationDefinition += node =>
+                foreach (var usage in usages)
                 {
-                    variableDefinitions.Clear();
-                };
-                rule.LeaveOperationDefinition += node =>
-                {
-                    var usages = context.GetRecursiveVariables(node);
+                    var variableName = usage.Node.Name;
 
-                    foreach (var usage in usages)
+                    if (!variableDefinitions.TryGetValue(variableName, out var variableDefinition))
                     {
-                        var variableName = usage.Node.Name;
-
-                        if (!variableDefinitions.TryGetValue(variableName, out var variableDefinition))
-                        {
-                            return;
-                        }
-
-                        var variableType = Ast.TypeFromAst(context.Schema, variableDefinition.Type);
-                        if (variableType != null && !AllowedVariableUsage(
-                                context.Schema,
-                                variableType,
-                                variableDefinition.DefaultValue,
-                                usage.Type,
-                                usage.DefaultValue))
-                        {
-                            context.Error(
-                                ValidationErrorCodes.R585AllVariableUsagesAreAllowed,
-                                $"Variable usages must be compatible with the arguments they are passed to. " +
-                                $"Variable '{variableName}' of type '{variableType}' used in " +
-                                $"position expecting type '{usage.Type}'");
-                        }
+                        return;
                     }
-                };
-            };
-
-            bool AllowedVariableUsage(
-                ISchema schema,
-                IType varType,
-                object varDefaultValue,
-                IType locationType,
-                object locationDefaultValue
-                )
-            {
-                if (locationType is NonNullType NonNullTypeTypeLocationType && !(varType is NonNullType)) 
-                {
-                    bool hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
-                    bool hasLocationDefaultValue = locationDefaultValue != null;
 
-                    if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue) {
-                        return false;
+                    var variableType = Ast.TypeFromAst(context.Schema, variableDefinition.Type);
+                    if (variableType != null && !AllowedVariableUsage(
+                            context.Schema,
+                            variableType,
+                            variableDefinition.DefaultValue,
+                            usage.Type,
+                            usage.DefaultValue))
+                    {
+                        context.Error(
+                            ValidationErrorCodes.R585AllVariableUsagesAreAllowed,
+                            $"Variable usages must be compatible with the arguments they are passed to. " +
+                            $"Variable '{variableName}' of type '{variableType}' used in " +
+                            $"position expecting type '{usage.Type}'");
                     }
-
-                    var nullableLocationType = NonNullTypeTypeLocationType.OfType;
-                    return IsTypeSubTypeOf(schema, varType, nullableLocationType);
                 }
+            };
+        };
 
-                return IsTypeSubTypeOf(schema, varType, locationType);
-            }
-
-            //todo: Move to TypeIs
-            bool IsTypeSubTypeOf(
-                ISchema schema,
-                IType maybeSubType,
-                IType superType
+        bool AllowedVariableUsage(
+            ISchema schema,
+            IType varType,
+            object varDefaultValue,
+            IType locationType,
+            object locationDefaultValue
             )
+        {
+            if (locationType is NonNullType NonNullTypeTypeLocationType && !(varType is NonNullType)) 
             {
-                // Equivalent type is a valid subtype
-                if (Equals(maybeSubType, superType)) {
-                    return true;
-                }
+                bool hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
+                bool hasLocationDefaultValue = locationDefaultValue != null;
 
-                // If superType is non-null, maybeSubType must also be non-null.
-                if (superType is NonNullType NonNullTypeTypeSuperType) {
-                    if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType) {
-                        return IsTypeSubTypeOf(
-                            schema, 
-                            NonNullTypeTypeMaybeSubType.OfType, 
-                            NonNullTypeTypeSuperType.OfType);
-                    }
+                if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue) {
                     return false;
                 }
 
-                if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType2) {
-                    // If superType is nullable, maybeSubType may be non-null or nullable.
-                    return IsTypeSubTypeOf(schema, NonNullTypeTypeMaybeSubType2.OfType, superType);
-                }
+                var nullableLocationType = NonNullTypeTypeLocationType.OfType;
+                return IsTypeSubTypeOf(schema, varType, nullableLocationType);
+            }
 
-                // If superType type is a list, maybeSubType type must also be a list.
-                if (superType is ListType listSuperType) {
-                    if (maybeSubType is ListType listMaybeSubType) {
-                        return IsTypeSubTypeOf(
-                            schema, 
-                            listMaybeSubType.OfType, 
-                            listSuperType.OfType);
-                    }
-                    return false;
-                }
+            return IsTypeSubTypeOf(schema, varType, locationType);
+        }
 
-                if (maybeSubType is List) {
-                    // If superType is not a list, maybeSubType must also be not a list.
-                    return false;
+        //todo: Move to TypeIs
+        bool IsTypeSubTypeOf(
+            ISchema schema,
+            IType maybeSubType,
+            IType superType
+        )
+        {
+            // Equivalent type is a valid subtype
+            if (Equals(maybeSubType, superType)) {
+                return true;
+            }
+
+            // If superType is non-null, maybeSubType must also be non-null.
+            if (superType is NonNullType NonNullTypeTypeSuperType) {
+                if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType) {
+                    return IsTypeSubTypeOf(
+                        schema, 
+                        NonNullTypeTypeMaybeSubType.OfType, 
+                        NonNullTypeTypeSuperType.OfType);
                 }
+                return false;
+            }
 
-                // If superType type is an abstract type, maybeSubType type may be a currently
-                // possible object type.
-                if (superType is IAbstractType abstractSuperType &&
-                    maybeSubType is ObjectDefinition objectMaybeSubType &&
-                    abstractSuperType.IsPossible(objectMaybeSubType)) 
-                {
-                    return true;
+            if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType2) {
+                // If superType is nullable, maybeSubType may be non-null or nullable.
+                return IsTypeSubTypeOf(schema, NonNullTypeTypeMaybeSubType2.OfType, superType);
+            }
+
+            // If superType type is a list, maybeSubType type must also be a list.
+            if (superType is ListType listSuperType) {
+                if (maybeSubType is ListType listMaybeSubType) {
+                    return IsTypeSubTypeOf(
+                        schema, 
+                        listMaybeSubType.OfType, 
+                        listSuperType.OfType);
                 }
+                return false;
+            }
 
-                // Otherwise, the child type is not a valid subtype of the parent type.
+            if (maybeSubType is List) {
+                // If superType is not a list, maybeSubType must also be not a list.
                 return false;
             }
-        }
 
-        */
+            // If superType type is an abstract type, maybeSubType type may be a currently
+            // possible object type.
+            if (superType is IAbstractType abstractSuperType &&
+                maybeSubType is ObjectDefinition objectMaybeSubType &&
+                abstractSuperType.IsPossible(objectMaybeSubType)) 
+            {
+                return true;
+            }
+
+            // Otherwise, the child type is not a valid subtype of the parent type.
+            return false;
+        }
     }
+
+    */
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/RuleVisitor.cs b/src/graphql/Validation/RuleVisitor.cs
index bc2dcc5b3..bd578a9f3 100644
--- a/src/graphql/Validation/RuleVisitor.cs
+++ b/src/graphql/Validation/RuleVisitor.cs
@@ -26,6 +26,8 @@ public class RuleVisitor
 
         public NodeVisitor<FragmentSpread> EnterFragmentSpread { get; set; }
 
+        public NodeVisitor<FragmentSpread> LeaveFragmentSpread { get; set; }
+
         public NodeVisitor<InlineFragment> EnterInlineFragment { get; set; }
 
         public NodeVisitor<IntValue> EnterIntValue { get; set; }
diff --git a/src/graphql/Validation/RulesWalker.cs b/src/graphql/Validation/RulesWalker.cs
index ea445a303..defeef0e0 100644
--- a/src/graphql/Validation/RulesWalker.cs
+++ b/src/graphql/Validation/RulesWalker.cs
@@ -269,13 +269,17 @@ public override FragmentDefinition BeginVisitFragmentDefinition(
         }
 
         public override FragmentSpread BeginVisitFragmentSpread(
-            FragmentSpread fragmentSpread)
+            FragmentSpread node)
         {
             {
-                Tracker.EnterFragmentSpread?.Invoke(fragmentSpread);
+                Tracker.EnterFragmentSpread?.Invoke(node);
             }
 
-            return base.BeginVisitFragmentSpread(fragmentSpread);
+            var result = base.BeginVisitFragmentSpread(node);
+
+            Tracker.LeaveFragmentSpread?.Invoke(node);
+
+            return result;
         }
 
         public override InlineFragment BeginVisitInlineFragment(
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index faf400ab1..09a0b3a7a 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
@@ -8,13 +10,9 @@ namespace Tanka.GraphQL.Validation;
 
 public class TypeTracker : RuleVisitor
 {
-    protected Stack<TypeDefinition?> ParentTypes { get; } = new();
-
-    protected Stack<FieldDefinition?> FieldDefinitions { get; } = new();
-
     public TypeTracker(ISchema schema)
     {
-        EnterOperationDefinition += node =>
+        EnterOperationDefinition = node =>
         {
             var root = node.Operation switch
             {
@@ -24,26 +22,224 @@ public TypeTracker(ISchema schema)
                 _ => throw new ArgumentOutOfRangeException()
             };
 
-            ParentTypes.Push(root);
+            Types.Push(root);
         };
+        LeaveOperationDefinition = node => { Types.TryPop(out _); };
 
-        LeaveOperationDefinition += node =>
-        {
-            ParentTypes.TryPop(out _);
-        };
+        EnterSelectionSet = node => { ParentTypes.Push(CurrentType); };
+
+        LeaveSelectionSet = node => { ParentTypes.TryPop(out _); };
 
-        EnterFieldSelection += node =>
+        EnterFieldSelection = node =>
         {
             if (ParentType is not null)
             {
                 var fieldDefinition = schema.GetField(ParentType.Name, node.Name);
-
                 FieldDefinitions.Push(fieldDefinition ?? null);
+
+                if (fieldDefinition?.Type is not null)
+                {
+                    var fieldTypeDefinition = Ast.UnwrapAndResolveType(schema, fieldDefinition.Type);
+
+                    if (fieldTypeDefinition is not null && TypeIs.IsOutputType(fieldTypeDefinition))
+                        Types.Push(fieldTypeDefinition);
+                    else
+                        Types.Push(null);
+                }
+                else
+                {
+                    Types.Push(null);
+                }
+            }
+            else
+            {
+                Types.Push(null);
+            }
+        };
+        LeaveFieldSelection = node =>
+        {
+            Types.TryPop(out _);
+            FieldDefinitions.TryPop(out _);
+        };
+
+        EnterDirective = directive => { DirectiveDefinition = schema.GetDirectiveType(directive.Name); };
+        LeaveDirective = node => { DirectiveDefinition = null; };
+
+        EnterInlineFragment = node =>
+        {
+            var typeConditionAst = node.TypeCondition;
+            if (typeConditionAst is not null)
+            {
+                var typeConditionDefinition = Ast.UnwrapAndResolveType(schema, typeConditionAst);
+
+                if (typeConditionDefinition is not null)
+                    Types.Push(TypeIs.IsOutputType(typeConditionDefinition) ? typeConditionDefinition : null);
+                else
+                    Types.Push(null);
+            }
+            else
+            {
+                Types.Push(CurrentType);
+            }
+        };
+        LeaveInlineFragment = node => Types.TryPop(out _);
+
+        EnterFragmentDefinition = node =>
+        {
+            var typeConditionAst = node.TypeCondition;
+            var typeConditionDefinition = Ast.UnwrapAndResolveType(schema, typeConditionAst);
+
+            if (typeConditionDefinition is not null)
+                Types.Push(TypeIs.IsOutputType(typeConditionDefinition) ? typeConditionDefinition : null);
+            else
+                Types.Push(CurrentType);
+        };
+        LeaveFragmentDefinition = node => Types.TryPop(out _);
+
+        EnterVariableDefinition = node =>
+        {
+            var inputTypeDefinition = Ast.UnwrapAndResolveType(schema, node.Type);
+
+            if (inputTypeDefinition is not null)
+                InputTypes.Push(TypeIs.IsInputType(inputTypeDefinition) ? inputTypeDefinition : null);
+            else
+                InputTypes.Push(null);
+        };
+        LeaveVariableDefinition = node => InputTypes.TryPop(out _);
+
+        EnterArgument = node =>
+        {
+            // we're in directive
+            if (DirectiveDefinition is not null)
+            {
+                if (DirectiveDefinition.TryGetArgument(node.Name, out var inputValueDefinition))
+                {
+                    ArgumentDefinition = inputValueDefinition;
+                    DefaultValues.Push(inputValueDefinition.DefaultValue?.Value);
+
+                    var argumentTypeDefinition = Ast.UnwrapAndResolveType(schema, inputValueDefinition.Type);
+
+                    if (argumentTypeDefinition is not null)
+                        InputTypes.Push(TypeIs.IsInputType(argumentTypeDefinition) ? argumentTypeDefinition : null);
+                    else
+                        InputTypes.Push(null);
+                }
+                else
+                {
+                    ArgumentDefinition = null;
+                    DefaultValues.Push(null);
+                    InputTypes.Push(null);
+                }
+            }
+            else if (FieldDefinition is not null)
+            {
+                if (FieldDefinition.TryGetArgument(node.Name, out var inputValueDefinition))
+                {
+                    ArgumentDefinition = inputValueDefinition;
+                    DefaultValues.Push(inputValueDefinition.DefaultValue?.Value);
+
+                    var argumentTypeDefinition = Ast.UnwrapAndResolveType(schema, inputValueDefinition.Type);
+
+                    if (argumentTypeDefinition is not null)
+                        InputTypes.Push(TypeIs.IsInputType(argumentTypeDefinition) ? argumentTypeDefinition : null);
+                    else
+                        InputTypes.Push(null);
+                }
+                else
+                {
+                    ArgumentDefinition = null;
+                    DefaultValues.Push(null);
+                    InputTypes.Push(null);
+                }
+            }
+            else
+            {
+                ArgumentDefinition = null;
+                DefaultValues.Push(null);
+                InputTypes.Push(null);
             }
         };
+        LeaveArgument = node =>
+        {
+            ArgumentDefinition = null;
+            DefaultValues.TryPop(out _);
+            InputTypes.TryPop(out _);
+        };
+
+        EnterListValue = node =>
+        {
+            /*if (InputType is not null)
+                InputTypes.Push(TypeIs.IsInputType(InputType) ? InputType : null);
+            else
+                InputTypes.Push(null);
+            */
+
+            // List positions never have a default value
+            DefaultValues.Push(null);
+        };
+        LeaveListValue = node =>
+        {
+            InputTypes.TryPop(out _);
+            DefaultValues.TryPop(out _);
+        };
+
+        EnterObjectField = node =>
+        {
+            if (InputType is InputObjectDefinition objectType)
+            {
+                var inputField = schema.GetInputField(objectType.Name, node.Name);
+
+                if (inputField is not null)
+                {
+                    DefaultValues.Push(inputField.DefaultValue?.Value);
+
+                    var inputFieldTypeDefinition = Ast.UnwrapAndResolveType(schema, inputField.Type);
+
+                    if (inputFieldTypeDefinition is not null)
+                        InputTypes.Push(TypeIs.IsInputType(inputFieldTypeDefinition) ? inputFieldTypeDefinition : null);
+                    else
+                        InputTypes.Push(null);
+                }
+                else
+                {
+                    DefaultValues.Push(null);
+                    InputTypes.Push(null);
+                }
+            }
+            else
+            {
+                DefaultValues.Push(null);
+                InputTypes.Push(null);
+            }
+        };
+        LeaveObjectField = node =>
+        {
+            DefaultValues.TryPop(out _);
+            InputTypes.TryPop(out _);
+        };
     }
 
-    public TypeDefinition? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
+    public InputValueDefinition? ArgumentDefinition { get; private set; }
+
+    public TypeDefinition? CurrentType => Types.Count > 0 ? Types.Peek() : null;
+
+    public ValueBase? DefaultValue => DefaultValues.Count > 0 ? DefaultValues.Peek() : null;
+
+    public DirectiveDefinition? DirectiveDefinition { get; private set; }
 
     public FieldDefinition? FieldDefinition => FieldDefinitions.Count > 0 ? FieldDefinitions.Peek() : null;
+
+    public TypeDefinition? InputType => InputTypes.Count > 0 ? InputTypes.Peek() : null;
+
+    public TypeDefinition? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
+
+    protected Stack<ValueBase?> DefaultValues { get; } = new();
+
+    protected Stack<FieldDefinition?> FieldDefinitions { get; } = new();
+
+    protected Stack<TypeDefinition?> InputTypes { get; } = new();
+
+    protected Stack<TypeDefinition?> ParentTypes { get; } = new();
+
+    protected Stack<TypeDefinition?> Types { get; } = new();
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs b/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
new file mode 100644
index 000000000..0ea48ef9a
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
@@ -0,0 +1,200 @@
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_541_Argument_Names_valid1()
+    {
+        /* Given */
+        var document =
+            @"fragment argOnRequiredArg on Dog {
+                      doesKnowCommand(dogCommand: SIT)
+                    }
+
+                    fragment argOnOptional on Dog {
+                      isHousetrained(atOtherHomes: true) @include(if: true)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R541ArgumentNames());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_541_Argument_Names_invalid1()
+    {
+        /* Given */
+        var document =
+            @"fragment invalidArgName on Dog {
+                      doesKnowCommand(command: CLEAN_UP_HOUSE)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R541ArgumentNames());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R541ArgumentNames);
+    }
+
+    [Fact]
+    public void Rule_541_Argument_Names_invalid2()
+    {
+        /* Given */
+        var document =
+            @"fragment invalidArgName on Dog {
+                      isHousetrained(atOtherHomes: true) @include(unless: false)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R541ArgumentNames());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R541ArgumentNames);
+    }
+
+    [Fact]
+    public void Rule_542_Argument_Uniqueness_valid1()
+    {
+        /* Given */
+        var document =
+            @"fragment argOnRequiredArg on Dog {
+                      doesKnowCommand(dogCommand: SIT)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R542ArgumentUniqueness());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_542_Argument_Uniqueness_invalid1()
+    {
+        /* Given */
+        var document =
+            @"fragment invalidArgName on Dog {
+                      doesKnowCommand(command: SIT, command: SIT)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R542ArgumentUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R542ArgumentUniqueness);
+    }
+
+    [Fact]
+    public void Rule_542_Argument_Uniqueness_invalid2()
+    {
+        /* Given */
+        var document =
+            @"fragment invalidArgName on Dog {
+                      doesKnowCommand(command: SIT) @skip(if: true, if: true)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R542ArgumentUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R542ArgumentUniqueness);
+    }
+
+    [Fact]
+    public void Rule_5421_Required_Arguments_valid1()
+    {
+        /* Given */
+        var document =
+            @"fragment goodBooleanArg on Arguments {
+                      booleanArgField(booleanArg: true)
+                    }
+
+                    fragment goodNonNullArg on Arguments {
+                      nonNullBooleanArgField(nonNullBooleanArg: true)
+                    }
+
+                    fragment goodBooleanArgDefault on Arguments {
+                      booleanArgField
+                    }
+                    ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5421RequiredArguments());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5421_Required_Arguments_invalid1()
+    {
+        /* Given */
+        var document =
+            @"fragment missingRequiredArg on Arguments {
+                      nonNullBooleanArgField
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5421RequiredArguments());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5421RequiredArguments);
+    }
+
+    [Fact]
+    public void Rule_5421_Required_Arguments_invalid2()
+    {
+        /* Given */
+        var document = 
+            @"fragment missingRequiredArg on Arguments {
+                      nonNullBooleanArgField(nonNullBooleanArg: null)
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5421RequiredArguments());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5421RequiredArguments);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs b/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
new file mode 100644
index 000000000..ec744378b
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
@@ -0,0 +1,556 @@
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_5511_Fragment_Name_Uniqueness_valid1()
+    {
+        /* Given */
+        var document = @"{
+                      dog {
+                        ...fragmentOne
+                        ...fragmentTwo
+                      }
+                    }
+
+                    fragment fragmentOne on Dog {
+                      name
+                    }
+
+                    fragment fragmentTwo on Dog {
+                      owner {
+                        name
+                      }
+                    }
+                  ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5511FragmentNameUniqueness());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5511_Fragment_Name_Uniqueness_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                      dog {
+                        ...fragmentOne
+                      }
+                    }
+
+                    fragment fragmentOne on Dog {
+                      name
+                    }
+
+                    fragment fragmentOne on Dog {
+                      owner {
+                        name
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5511FragmentNameUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5511FragmentNameUniqueness);
+    }
+
+    [Fact]
+    public void Rule_5512_Fragment_Spread_Type_Existence_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment correctType on Dog {
+                        name
+                    }
+
+                    fragment inlineFragment on Dog {
+                      ... on Dog {
+                        name
+                      }
+                    }
+
+                    fragment inlineFragment2 on Dog {
+                      ... @include(if: true) {
+                        name
+                      }
+                    }
+                  ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5512FragmentSpreadTypeExistence());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5512_Fragment_Spread_Type_Existence_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment notOnExistingType on NotInSchema {
+                      name
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5512FragmentSpreadTypeExistence());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5512FragmentSpreadTypeExistence);
+    }
+
+    [Fact]
+    public void Rule_5512_Fragment_Spread_Type_Existence_invalid2()
+    {
+        /* Given */
+        var document = 
+            @"fragment inlineNotExistingType on Dog {
+                      ... on NotInSchema {
+                        name
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5512FragmentSpreadTypeExistence());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5512FragmentSpreadTypeExistence);
+    }
+
+    [Fact]
+    public void Rule_5513_FragmentsOnCompositeTypes_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment fragOnObject on Dog {
+                      name
+                    }
+
+                    fragment fragOnInterface on Pet {
+                      name
+                    }
+
+                    fragment fragOnUnion on CatOrDog {
+                      ... on Dog {
+                        name
+                      }
+                    }
+                  ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5513FragmentsOnCompositeTypes());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5513_FragmentsOnCompositeTypes_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment fragOnScalar on Int {
+                      something
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5513FragmentsOnCompositeTypes());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5513FragmentsOnCompositeTypes);
+    }
+
+    [Fact]
+    public void Rule_5513_FragmentsOnCompositeTypes_invalid2()
+    {
+        /* Given */
+        var document = 
+            @"fragment inlineFragOnScalar on Dog {
+                      ... on Boolean {
+                        somethingElse
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5513FragmentsOnCompositeTypes());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5513FragmentsOnCompositeTypes);
+    }
+
+    [Fact]
+    public void Rule_5514_FragmentsMustBeUsed_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment nameFragment on Dog {
+                      name
+                    }
+
+                    {
+                      dog {
+                        ...nameFragment
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5514FragmentsMustBeUsed());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5514_FragmentsMustBeUsed_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment nameFragment on Dog {
+                      name
+                    }
+
+                    {
+                      dog {
+                        name
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5514FragmentsMustBeUsed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5514FragmentsMustBeUsed);
+    }
+
+    [Fact]
+    public void Rule_5521_FragmentSpreadTargetDefined_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"
+                {
+                  dog {
+                    ...undefinedFragment
+                  }
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5521FragmentSpreadTargetDefined());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5521FragmentSpreadTargetDefined);
+    }
+
+    [Fact]
+    public void Rule_5521_FragmentSpreadTargetDefined_valid1()
+    {
+        /* Given */
+        var document = 
+            @"
+                {
+                    dog   {
+                    ...nameFragment
+                    }
+                }
+
+                fragment nameFragment on Dog {
+                  name
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5521FragmentSpreadTargetDefined());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                      dog {
+                        ...nameFragment
+                      }
+                    }
+
+                    fragment nameFragment on Dog {
+                      name
+                      ...barkVolumeFragment
+                    }
+
+                    fragment barkVolumeFragment on Dog {
+                      barkVolume
+                      ...nameFragment
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5522FragmentSpreadsMustNotFormCycles());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles);
+    }
+
+    [Fact]
+    public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid2()
+    {
+        /* Given */
+        var document = 
+            @"{
+                      dog {
+                        ...dogFragment
+                      }
+                    }
+
+                    fragment dogFragment on Dog {
+                      name
+                      owner {
+                        ...ownerFragment
+                      }
+                    }
+
+                    fragment ownerFragment on Dog {
+                      name
+                      pets {
+                        ...dogFragment
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5522FragmentSpreadsMustNotFormCycles());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_in_scope_valid()
+    {
+        /* Given */
+        var document = 
+            @"fragment dogFragment on Dog {
+                      ... on Dog {
+                        barkVolume
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_in_scope_invalid()
+    {
+        /* Given */
+        var document =
+            @"fragment catInDogFragmentInvalid on Dog {
+                  ... on Cat {
+                    meowVolume
+                  }
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5523FragmentSpreadIsPossible);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment petNameFragment on Pet {
+                      name
+                    }
+
+                    fragment interfaceWithinObjectFragment on Dog {
+                      ...petNameFragment
+                    }
+                    ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid2()
+    {
+        /* Given */
+        var document = 
+            @"fragment catOrDogNameFragment on CatOrDog {
+                      ... on Cat {
+                        meowVolume
+                      }
+                    }
+
+                    fragment unionWithObjectFragment on Dog {
+                      ...catOrDogNameFragment
+                    }
+                    ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment unionWithInterface on Pet {
+                      ...dogOrHumanFragment
+                    }
+
+                    fragment dogOrHumanFragment on DogOrHuman {
+                      ... on Dog {
+                        barkVolume
+                      }
+                    }
+                    ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_invalid()
+    {
+        /* Given */
+        var document = 
+            @"
+            fragment nonIntersectingInterfaces on Pet {
+                ...sentientFragment
+            }
+
+            fragment sentientFragment on Sentient {
+                name
+            }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5523FragmentSpreadIsPossible);
+    }
+
+    [Fact]
+    public void Rule_5523_FragmentSpreadIsPossible_Interface_in_interface_scope_valid()
+    {
+        /* Given */
+        var document = 
+            @"
+            fragment interfaceWithInterface on Node {
+              ...resourceFragment
+            }
+
+            fragment resourceFragment on Resource {
+              url
+            }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5523FragmentSpreadIsPossible());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Rules.cs b/tests/graphql.tests/Validation/ValidatorFacts.Rules.cs
new file mode 100644
index 000000000..5c1252df8
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Rules.cs
@@ -0,0 +1,919 @@
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"fragment goodBooleanArg on Arguments {
+                      booleanArgField(booleanArg: true)
+                    }
+
+                    fragment coercedIntIntoFloatArg on Arguments {
+                      # Note: The input coercion rules for Float allow Int literals.
+                      floatArgField(floatArg: 123)
+                    }
+
+                    query goodComplexDefaultValue($search: ComplexInput = { name: ""Fido"" }) {
+                      findDog(complex: $search)
+                    }
+                  ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"fragment stringIntoInt on Arguments {
+                      intArgField(intArg: ""123"")
+                    }"
+        );
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
+    }
+
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_invalid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query badComplexValue {
+                      findDog(complex: { name: 123 })
+                    }"
+        );
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
+    }
+
+    [Fact]
+    public void Rule_562_InputObjectFieldNames_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                      findDog(complex: { name: ""Fido"" })
+                    }
+                  ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R562InputObjectFieldNames());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_562_InputObjectFieldNames_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                      findDog(complex: { favoriteCookieFlavor: ""Bacon"" })
+                    }
+                    ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R562InputObjectFieldNames());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R562InputObjectFieldNames);
+    }
+
+    [Fact]
+    public void Rule_563_InputObjectFieldUniqueness_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                      field(arg: { field: true, field: false })
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R563InputObjectFieldUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R563InputObjectFieldUniqueness);
+    }
+
+    [Fact]
+    public void Rule_564_InputObjectRequiredFields_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                       findDog(complex: { owner: ""Fido"" })
+                  }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R564InputObjectRequiredFields());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
+    }
+
+    [Fact]
+    public void Rule_564_InputObjectRequiredFields_invalid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                       findDog(complex: { name: null })
+                  }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R564InputObjectRequiredFields());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
+    }
+
+    [Fact]
+    public void Rule_57_DirectivesAreDefined_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                       findDog(complex: { name: ""Fido"" }) @skip(if: false)
+                  }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_571_DirectivesAreDefined_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"{
+                       findDog(complex: { name: ""Fido"" }) @doesNotExists
+                  }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R571DirectivesAreDefined);
+    }
+
+    [Fact]
+    public void Rule_572_DirectivesAreInValidLocations_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query {
+                  field @skip(if: $foo)
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R572DirectivesAreInValidLocations());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_572_DirectivesAreInValidLocations_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query @skip(if: $foo) {
+                  field
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R572DirectivesAreInValidLocations());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R572DirectivesAreInValidLocations);
+    }
+
+    [Fact]
+    public void Rule_573_DirectivesAreUniquePerLocation_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query ($foo: Boolean = true, $bar: Boolean = false) {
+                      field @skip(if: $foo) {
+                        subfieldA
+                      }
+                      field @skip(if: $bar) {
+                        subfieldB
+                      }
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_573_DirectivesAreUniquePerLocation_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query ($foo: Boolean = true, $bar: Boolean = false) {
+                      field @skip(if: $foo) @skip(if: $bar)
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R573DirectivesAreUniquePerLocation);
+    }
+
+    [Fact]
+    public void Rule_58_Variables_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query A($atOtherHomes: Boolean) {
+                      ...HouseTrainedFragment
+                    }
+
+                    query B($atOtherHomes: Boolean) {
+                      ...HouseTrainedFragment
+                    }
+
+                    fragment HouseTrainedFragment on Query {
+                      dog {
+                        isHousetrained(atOtherHomes: $atOtherHomes)
+                      }
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R581And582Variables());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_58_Variables_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query houseTrainedQuery($atOtherHomes: Boolean, $atOtherHomes: Boolean) {
+                      dog {
+                        isHousetrained(atOtherHomes: $atOtherHomes)
+                      }
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R581And582Variables());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R581VariableUniqueness);
+    }
+
+    [Fact]
+    public void Rule_582_VariablesAreInputTypes_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query takesBoolean($atOtherHomes: Boolean) {
+                      dog {
+                        isHousetrained(atOtherHomes: $atOtherHomes)
+                      }
+                    }
+
+                    query takesComplexInput($complexInput: ComplexInput) {
+                      findDog(complex: $complexInput) {
+                        name
+                      }
+                    }
+
+                    query TakesListOfBooleanBang($booleans: [Boolean!]) {
+                      booleanList(booleanListArg: $booleans)
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R581And582Variables());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_582_VariablesAreInputTypes_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query takesCat($cat: Cat) {
+                      __typename
+                    }
+
+                    query takesDogBang($dog: Dog!) {
+                      __typename
+                    }
+
+                    query takesListOfPet($pets: [Pet]) {
+                      __typename
+                    }
+
+                    query takesCatOrDog($catOrDog: CatOrDog) {
+                      __typename
+                    }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R581And582Variables());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Equal(4, result.Errors.Count());
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R582VariablesAreInputTypes
+                     && error.Message.StartsWith("Variables can only be input types. Objects, unions,"));
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query variableIsDefined($atOtherHomes: Boolean) {
+                      dog {
+                        isHousetrained(atOtherHomes: $atOtherHomes)
+                      }
+                    }");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_valid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query variableIsDefinedUsedInSingleFragment($atOtherHomes: Boolean) {
+                      dog {
+                        ...isHousetrainedFragment
+                      }
+                    }
+
+                    fragment isHousetrainedFragment on Dog {
+                      isHousetrained(atOtherHomes: $atOtherHomes)
+                    }");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_valid3()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"query housetrainedQueryOne($atOtherHomes: Boolean) {
+                      dog {
+                        ...isHousetrainedFragment
+                      }
+                }
+
+                query housetrainedQueryTwo($atOtherHomes: Boolean) {
+                  dog {
+                    ...isHousetrainedFragment
+                  }
+                }
+
+                fragment isHousetrainedFragment on Dog {
+                  isHousetrained(atOtherHomes: $atOtherHomes)
+                }");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+            query variableIsNotDefined {
+              dog {
+                isHousetrained(atOtherHomes: $atOtherHomes)
+              }
+            }
+             ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_invalid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+            query variableIsNotDefinedUsedInSingleFragment {
+              dog {
+                ...isHousetrainedFragment
+              }
+            }
+
+            fragment isHousetrainedFragment on Dog {
+              isHousetrained(atOtherHomes: $atOtherHomes)
+            }
+             ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_invalid3()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+            query variableIsNotDefinedUsedInNestedFragment {
+              dog {
+                ...outerHousetrainedFragment
+              }
+            }
+
+            fragment outerHousetrainedFragment on Dog {
+              ...isHousetrainedFragment
+            }
+
+            fragment isHousetrainedFragment on Dog {
+              isHousetrained(atOtherHomes: $atOtherHomes)
+            }
+             ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
+    }
+
+    [Fact]
+    public void Rule_583_AllVariableUsesDefined_invalid4()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+            query housetrainedQueryOne($atOtherHomes: Boolean) {
+              dog {
+                ...isHousetrainedFragment
+              }
+            }
+
+            query housetrainedQueryTwoNotDefined {
+              dog {
+                ...isHousetrainedFragment
+              }
+            }
+
+            fragment isHousetrainedFragment on Dog {
+              isHousetrained(atOtherHomes: $atOtherHomes)
+            }
+             ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R583AllVariableUsesDefined());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
+    }
+
+    [Fact]
+    public void Rule_584_AllVariablesUsed_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query variableUnused($atOtherHomes: Boolean) {
+                  dog {
+                    isHousetrained
+                  }
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R584AllVariablesUsed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
+                     && error.Message.Contains("atOtherHomes"));
+    }
+
+    [Fact]
+    public void Rule_584_AllVariablesUsed_invalid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query variableNotUsedWithinFragment($atOtherHomes: Boolean) {
+                  dog {
+                    ...isHousetrainedWithoutVariableFragment
+                  }
+                }
+
+                fragment isHousetrainedWithoutVariableFragment on Dog {
+                  isHousetrained
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R584AllVariablesUsed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
+                     && error.Message.Contains("atOtherHomes"));
+    }
+
+    [Fact]
+    public void Rule_584_AllVariablesUsed_invalid3()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query queryWithUsedVar($atOtherHomes: Boolean) {
+                  dog {
+                    ...isHousetrainedFragment
+                  }
+                }
+
+                query queryWithExtraVar($atOtherHomes: Boolean, $extra: Int) {
+                  dog {
+                    ...isHousetrainedFragment
+                  }
+                }
+
+                fragment isHousetrainedFragment on Dog {
+                  isHousetrained(atOtherHomes: $atOtherHomes)
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R584AllVariablesUsed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
+                     && error.Message.Contains("extra"));
+    }
+
+    [Fact]
+    public void Rule_584_AllVariablesUsed_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query variableUsedInFragment($atOtherHomes: Boolean) {
+                  dog {
+                    ...isHousetrainedFragment
+                  }
+                }
+
+                fragment isHousetrainedFragment on Dog {
+                  isHousetrained(atOtherHomes: $atOtherHomes)
+                }
+                 ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R584AllVariablesUsed());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_invalid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query intCannotGoIntoBoolean($intArg: Int) {
+                  arguments {
+                    booleanArgField(booleanArg: $intArg)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_invalid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query booleanListCannotGoIntoBoolean($booleanListArg: [Boolean]) {
+                  arguments {
+                    booleanArgField(booleanArg: $booleanListArg)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_invalid3()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query booleanArgQuery($booleanArg: Boolean) {
+                  arguments {
+                    nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_valid1()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query nonNullListToList($nonNullBooleanList: [Boolean]!) {
+                  arguments {
+                    booleanListArgField(booleanListArg: $nonNullBooleanList)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_invalid4()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query listToNonNullList($booleanList: [Boolean]) {
+                  arguments {
+                    nonNullBooleanListField(nonNullBooleanListArg: $booleanList)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_valid2()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query booleanArgQueryWithDefault($booleanArg: Boolean) {
+                  arguments {
+                    optionalNonNullBooleanArgField(optionalBooleanArg: $booleanArg)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_585_AllVariableUsagesAreAllowed_valid3()
+    {
+        /* Given */
+        var document = Parser.ParseDocument(
+            @"
+                query booleanArgQueryWithDefault($booleanArg: Boolean = true) {
+                  arguments {
+                    nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
+                  }
+                }
+                ");
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R585AllVariableUsagesAreAllowed());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs b/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs
new file mode 100644
index 000000000..7232cf22f
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs
@@ -0,0 +1,458 @@
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_531_Field_Selections_invalid_with_fragment()
+    {
+        /* Given */
+        var document =
+            @"fragment fieldNotDefined on Dog {
+                      meowVolume
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R531FieldSelections);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_invalid_with_alias()
+    {
+        /* Given */
+        var document =
+            @"fragment aliasedLyingFieldTargetNotDefined on Dog {
+                      barkVolume: kawVolume
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R531FieldSelections);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_valid()
+    {
+        /* Given */
+        var document =
+            @"{
+                  dog {
+                    name
+                  }
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_valid_with_interface()
+    {
+        /* Given */
+        var document =
+            @"fragment interfaceFieldSelection on Pet {
+                  name
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_invalid_with_interface()
+    {
+        /* Given */
+        var document =
+            @"fragment definedOnImplementorsButNotInterface on Pet {
+                      nickname
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R531FieldSelections);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_valid_with_union()
+    {
+        /* Given */
+        var document =
+            @"fragment inDirectFieldSelectionOnUnion on CatOrDog {
+                  __typename
+                  ... on Pet {
+                    name
+                  }
+                  ... on Dog {
+                    barkVolume
+                  }
+                }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_531_Field_Selections_invalid_with_union()
+    {
+        /* Given */
+        var document =
+            @"fragment directFieldSelectionOnUnion on CatOrDog {
+                      name
+                      barkVolume
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R531FieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R531FieldSelections
+                     && error.Nodes.OfType<FieldSelection>()
+                         .Any(n => n.Name == "name"));
+
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R531FieldSelections
+                     && error.Nodes.OfType<FieldSelection>()
+                         .Any(n => n.Name == "barkVolume"));
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_valid1()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment mergeIdenticalFields on Dog {
+                  name
+                  name
+                }
+
+                fragment mergeIdenticalAliasesAndFields on Dog {
+                  otherName: name
+                  otherName: name
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_valid2()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment mergeIdenticalFieldsWithIdenticalArgs on Dog {
+                  doesKnowCommand(dogCommand: SIT)
+                  doesKnowCommand(dogCommand: SIT)
+                }
+
+                fragment mergeIdenticalFieldsWithIdenticalValues on Dog {
+                  doesKnowCommand(dogCommand: $dogCommand)
+                  doesKnowCommand(dogCommand: $dogCommand)
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging(),
+            new Dictionary<string, object>()
+            {
+                ["dogCommand"] = "SIT"
+            });
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_valid3()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment safeDifferingFields on Pet {
+                  ... on Dog {
+                    volume: barkVolume
+                  }
+                  ... on Cat {
+                    volume: meowVolume
+                  }
+                }
+
+                fragment safeDifferingArgs on Pet {
+                  ... on Dog {
+                    doesKnowCommand(dogCommand: SIT)
+                  }
+                  ... on Cat {
+                    doesKnowCommand(catCommand: JUMP)
+                  }
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_invalid1()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment conflictingBecauseAlias on Dog {
+                  name: nickname
+                  name
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R532FieldSelectionMerging
+                     && error.Nodes.OfType<FieldSelection>()
+                         .Any(n => n.Name == "name"));
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_invalid2()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment conflictingArgsOnValues on Dog {
+                  doesKnowCommand(dogCommand: SIT)
+                  doesKnowCommand(dogCommand: HEEL)
+                }
+
+                fragment conflictingArgsValueAndVar on Dog {
+                  doesKnowCommand(dogCommand: SIT)
+                  doesKnowCommand(dogCommand: $dogCommand)
+                }
+
+                fragment conflictingArgsWithVars on Dog {
+                  doesKnowCommand(dogCommand: $varOne)
+                  doesKnowCommand(dogCommand: $varTwo)
+                }
+
+                fragment differingArgs on Dog {
+                  doesKnowCommand(dogCommand: SIT)
+                  doesKnowCommand
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging(),
+            new Dictionary<string, object>()
+            {
+                ["dogCommand"] = "HEEL",
+                ["varOne"] = "SIT",
+                ["varTwo"] = "HEEL"
+            });
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.All(
+            result.Errors,
+            error => Assert.True(error.Code == ValidationErrorCodes.R532FieldSelectionMerging));
+    }
+
+    [Fact]
+    public void Rule_532_Field_Selection_Merging_invalid3()
+    {
+        /* Given */
+        var document =
+            @"
+                fragment conflictingDifferingResponses on Pet {
+                  ... on Dog {
+                    someValue: nickname
+                  }
+                  ... on Cat {
+                    someValue: meowVolume
+                  }
+                }
+                ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R532FieldSelectionMerging());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.All(
+            result.Errors,
+            error => Assert.True(error.Code == ValidationErrorCodes.R532FieldSelectionMerging));
+    }
+
+    [Fact]
+    public void Rule_533_Leaf_Field_Selections_valid()
+    {
+        /* Given */
+        var document =
+            @"fragment scalarSelection on Dog {
+                      barkVolume
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R533LeafFieldSelections());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_533_Leaf_Field_Selections_invalid1()
+    {
+        /* Given */
+        var document =
+            @"fragment scalarSelectionsNotAllowedOnInt on Dog {
+                      barkVolume {
+                        sinceWhen
+                      }
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R533LeafFieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
+    }
+
+    [Fact]
+    public void Rule_533_Leaf_Field_Selections_invalid2()
+    {
+        /* Given */
+        var document =
+            @"query directQueryOnObjectWithoutSubFields {
+                      human
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R533LeafFieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
+    }
+
+    [Fact]
+    public void Rule_533_Leaf_Field_Selections_invalid3()
+    {
+        /* Given */
+        var document =
+            @"query directQueryOnInterfaceWithoutSubFields {
+                      pet
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R533LeafFieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
+    }
+
+    [Fact]
+    public void Rule_533_Leaf_Field_Selections_invalid4()
+    {
+        /* Given */
+        var document =
+            @"query directQueryOnUnionWithoutSubFields {
+                      catOrDog
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R533LeafFieldSelections());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.cs b/tests/graphql.tests/Validation/ValidatorFacts.cs
index a352130e3..2be017f36 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.cs
@@ -2,16 +2,13 @@
 using System.Collections.Generic;
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 using Xunit;
 
 namespace Tanka.GraphQL.Tests.Validation
 {
-    public class ValidatorFacts
+    public partial class ValidatorFacts
     {
         public ValidatorFacts()
         {
@@ -99,10 +96,20 @@ extend type Query {
                   findDog(complex: ComplexInput): Dog
                   booleanList(booleanListArg: [Boolean!]): Boolean
                 }
+
+            interface Node {
+              id: ID!
+            }
+
+            interface Resource implements Node {
+              id: ID!
+              url: String
+            }
                 ";
 
-            Schema = new SchemaBuilder().Sdl(sdl)
-                .Build();
+            Schema = new SchemaBuilder()
+                .Add(sdl)
+                .Build(new SchemaBuildOptions()).Result;
         }
 
         public ISchema Schema { get; }
@@ -154,7 +161,7 @@ extend type Dog {
         public void Rule_5211_Operation_Name_Uniqueness_valid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"query getDogName {
                       dog {
                         name
@@ -167,7 +174,7 @@ query getOwnerName {
                           name
                         }
                       }
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -182,7 +189,7 @@ query getOwnerName {
         public void Rule_5211_Operation_Name_Uniqueness_invalid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"query getName {
                       dog {
                         name
@@ -195,7 +202,7 @@ query getName {
                           name
                         }
                       }
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -213,12 +220,12 @@ query getName {
         public void Rule_5221_Lone_Anonymous_Operation_valid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"{
                   dog {
                     name
                   }
-                }");
+                }";
 
             /* When */
             var result = Validate(
@@ -233,7 +240,7 @@ public void Rule_5221_Lone_Anonymous_Operation_valid()
         public void Rule_5221_Lone_Anonymous_Operation_invalid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"{
                   dog {
                     name
@@ -246,7 +253,7 @@ query getName {
                       name
                     }
                   }
-                }");
+                }";
 
             /* When */
             var result = Validate(
@@ -264,13 +271,13 @@ query getName {
         public void Rule_5231_Single_root_field_valid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"subscription sub {
                       newMessage {
                         body
                         sender
                       }
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -285,7 +292,7 @@ public void Rule_5231_Single_root_field_valid()
         public void Rule_5231_Single_root_field_valid_with_fragment()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"subscription sub {
                       ...newMessageFields
                     }
@@ -295,7 +302,7 @@ fragment newMessageFields on Subscription {
                         body
                         sender
                       }
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -310,14 +317,14 @@ fragment newMessageFields on Subscription {
         public void Rule_5231_Single_root_field_invalid()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"subscription sub {
                       newMessage {
                         body
                         sender
                       }
                       disallowedSecondRootField
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -335,7 +342,7 @@ public void Rule_5231_Single_root_field_invalid()
         public void Rule_5231_Single_root_field_invalid_with_fragment()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"subscription sub {
                       ...multipleSubscriptions
                     }
@@ -346,7 +353,7 @@ fragment multipleSubscriptions on Subscription {
                         sender
                       }
                       disallowedSecondRootField
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -364,14 +371,14 @@ fragment multipleSubscriptions on Subscription {
         public void Rule_5231_Single_root_field_invalid_with_typename()
         {
             /* Given */
-            var document = Parser.ParseDocument(
+            var document = 
                 @"subscription sub {
                       newMessage {
                         body
                         sender
                       }
                       __typename
-                    }");
+                    }";
 
             /* When */
             var result = Validate(
@@ -384,2094 +391,5 @@ public void Rule_5231_Single_root_field_invalid_with_typename()
                 result.Errors,
                 error => error.Code == ValidationErrorCodes.R5231SingleRootField);
         }
-
-        [Fact]
-        public void Rule_531_Field_Selections_invalid_with_fragment()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment fieldNotDefined on Dog {
-                      meowVolume
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R531FieldSelections);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_invalid_with_alias()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment aliasedLyingFieldTargetNotDefined on Dog {
-                      barkVolume: kawVolume
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R531FieldSelections);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_valid()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                  dog {
-                    name
-                  }
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_valid_with_interface()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment interfaceFieldSelection on Pet {
-                  name
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_invalid_with_interface()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment definedOnImplementorsButNotInterface on Pet {
-                      nickname
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R531FieldSelections);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_valid_with_union()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment inDirectFieldSelectionOnUnion on CatOrDog {
-                  __typename
-                  ... on Pet {
-                    name
-                  }
-                  ... on Dog {
-                    barkVolume
-                  }
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_531_Field_Selections_invalid_with_union()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment directFieldSelectionOnUnion on CatOrDog {
-                      name
-                      barkVolume
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R531FieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R531FieldSelections 
-                         && error.Nodes.OfType<FieldSelection>()
-                             .Any(n => n.Name == "name"));
-
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R531FieldSelections 
-                         && error.Nodes.OfType<FieldSelection>()
-                             .Any(n => n.Name == "barkVolume"));
-        }
-
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment mergeIdenticalFields on Dog {
-                  name
-                  name
-                }
-
-                fragment mergeIdenticalAliasesAndFields on Dog {
-                  otherName: name
-                  otherName: name
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_valid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment mergeIdenticalFieldsWithIdenticalArgs on Dog {
-                  doesKnowCommand(dogCommand: SIT)
-                  doesKnowCommand(dogCommand: SIT)
-                }
-
-                fragment mergeIdenticalFieldsWithIdenticalValues on Dog {
-                  doesKnowCommand(dogCommand: $dogCommand)
-                  doesKnowCommand(dogCommand: $dogCommand)
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging(),
-                new Dictionary<string, object>()
-                {
-                    ["dogCommand"] = "SIT"
-                });
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_valid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment safeDifferingFields on Pet {
-                  ... on Dog {
-                    volume: barkVolume
-                  }
-                  ... on Cat {
-                    volume: meowVolume
-                  }
-                }
-
-                fragment safeDifferingArgs on Pet {
-                  ... on Dog {
-                    doesKnowCommand(dogCommand: SIT)
-                  }
-                  ... on Cat {
-                    doesKnowCommand(catCommand: JUMP)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment conflictingBecauseAlias on Dog {
-                  name: nickname
-                  name
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R532FieldSelectionMerging 
-                         && error.Nodes.OfType<FieldSelection>()
-                             .Any(n => n.Name == "name"));
-        }
-        
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment conflictingArgsOnValues on Dog {
-                  doesKnowCommand(dogCommand: SIT)
-                  doesKnowCommand(dogCommand: HEEL)
-                }
-
-                fragment conflictingArgsValueAndVar on Dog {
-                  doesKnowCommand(dogCommand: SIT)
-                  doesKnowCommand(dogCommand: $dogCommand)
-                }
-
-                fragment conflictingArgsWithVars on Dog {
-                  doesKnowCommand(dogCommand: $varOne)
-                  doesKnowCommand(dogCommand: $varTwo)
-                }
-
-                fragment differingArgs on Dog {
-                  doesKnowCommand(dogCommand: SIT)
-                  doesKnowCommand
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging(),
-                new Dictionary<string, object>()
-                {
-                    ["dogCommand"] = "HEEL",
-                    ["varOne"] = "SIT",
-                    ["varTwo"] = "HEEL"
-                });
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.All(
-                result.Errors,
-                error => Assert.True(error.Code == ValidationErrorCodes.R532FieldSelectionMerging));
-        }
-
-        [Fact]
-        public void Rule_532_Field_Selection_Merging_invalid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                fragment conflictingDifferingResponses on Pet {
-                  ... on Dog {
-                    someValue: nickname
-                  }
-                  ... on Cat {
-                    someValue: meowVolume
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R532FieldSelectionMerging());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.All(
-                result.Errors,
-                error => Assert.True(error.Code == ValidationErrorCodes.R532FieldSelectionMerging));
-        }
-
-        [Fact]
-        public void Rule_533_Leaf_Field_Selections_valid()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment scalarSelection on Dog {
-                      barkVolume
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R533LeafFieldSelections());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_533_Leaf_Field_Selections_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment scalarSelectionsNotAllowedOnInt on Dog {
-                      barkVolume {
-                        sinceWhen
-                      }
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R533LeafFieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
-        }
-
-        [Fact]
-        public void Rule_533_Leaf_Field_Selections_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query directQueryOnObjectWithoutSubFields {
-                      human
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R533LeafFieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
-        }
-
-        [Fact]
-        public void Rule_533_Leaf_Field_Selections_invalid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query directQueryOnInterfaceWithoutSubFields {
-                      pet
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R533LeafFieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
-        }
-
-        [Fact]
-        public void Rule_533_Leaf_Field_Selections_invalid4()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query directQueryOnUnionWithoutSubFields {
-                      catOrDog
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R533LeafFieldSelections());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R533LeafFieldSelections);
-        }
-
-        [Fact]
-        public void Rule_541_Argument_Names_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment argOnRequiredArg on Dog {
-                      doesKnowCommand(dogCommand: SIT)
-                    }
-
-                    fragment argOnOptional on Dog {
-                      isHousetrained(atOtherHomes: true) @include(if: true)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R541ArgumentNames());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_541_Argument_Names_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment invalidArgName on Dog {
-                      doesKnowCommand(command: CLEAN_UP_HOUSE)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R541ArgumentNames());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R541ArgumentNames);
-        }
-
-        [Fact]
-        public void Rule_541_Argument_Names_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment invalidArgName on Dog {
-                      isHousetrained(atOtherHomes: true) @include(unless: false)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R541ArgumentNames());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R541ArgumentNames);
-        }
-
-        [Fact]
-        public void Rule_542_Argument_Uniqueness_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment argOnRequiredArg on Dog {
-                      doesKnowCommand(dogCommand: SIT)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R542ArgumentUniqueness());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_542_Argument_Uniqueness_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment invalidArgName on Dog {
-                      doesKnowCommand(command: SIT, command: SIT)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R542ArgumentUniqueness());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R542ArgumentUniqueness);
-        }
-
-        [Fact]
-        public void Rule_542_Argument_Uniqueness_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment invalidArgName on Dog {
-                      doesKnowCommand(command: SIT) @skip(if: true, if: true)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R542ArgumentUniqueness());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R542ArgumentUniqueness);
-        }
-
-        [Fact]
-        public void Rule_5421_Required_Arguments_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment goodBooleanArg on Arguments {
-                      booleanArgField(booleanArg: true)
-                    }
-
-                    fragment goodNonNullArg on Arguments {
-                      nonNullBooleanArgField(nonNullBooleanArg: true)
-                    }
-
-                    fragment goodBooleanArgDefault on Arguments {
-                      booleanArgField
-                    }
-                    ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5421RequiredArguments());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5421_Required_Arguments_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment missingRequiredArg on Arguments {
-                      nonNullBooleanArgField
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5421RequiredArguments());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5421RequiredArguments);
-        }
-
-        [Fact]
-        public void Rule_5421_Required_Arguments_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment missingRequiredArg on Arguments {
-                      nonNullBooleanArgField(nonNullBooleanArg: null)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5421RequiredArguments());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5421RequiredArguments);
-        }
-
-        [Fact]
-        public void Rule_5511_Fragment_Name_Uniqueness_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      dog {
-                        ...fragmentOne
-                        ...fragmentTwo
-                      }
-                    }
-
-                    fragment fragmentOne on Dog {
-                      name
-                    }
-
-                    fragment fragmentTwo on Dog {
-                      owner {
-                        name
-                      }
-                    }
-                  ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5511FragmentNameUniqueness());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5511_Fragment_Name_Uniqueness_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      dog {
-                        ...fragmentOne
-                      }
-                    }
-
-                    fragment fragmentOne on Dog {
-                      name
-                    }
-
-                    fragment fragmentOne on Dog {
-                      owner {
-                        name
-                      }
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5511FragmentNameUniqueness());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5511FragmentNameUniqueness);
-        }
-
-        [Fact]
-        public void Rule_5512_Fragment_Spread_Type_Existence_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                    @"fragment correctType on Dog {
-                        name
-                    }
-
-                    fragment inlineFragment on Dog {
-                      ... on Dog {
-                        name
-                      }
-                    }
-
-                    fragment inlineFragment2 on Dog {
-                      ... @include(if: true) {
-                        name
-                      }
-                    }
-                  ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5512FragmentSpreadTypeExistence());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5512_Fragment_Spread_Type_Existence_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment notOnExistingType on NotInSchema {
-                      name
-                    }"
-                );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5512FragmentSpreadTypeExistence());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5512FragmentSpreadTypeExistence);
-        }
-
-        [Fact]
-        public void Rule_5512_Fragment_Spread_Type_Existence_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment inlineNotExistingType on Dog {
-                      ... on NotInSchema {
-                        name
-                      }
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5512FragmentSpreadTypeExistence());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5512FragmentSpreadTypeExistence);
-        }
-
-        [Fact]
-        public void Rule_5513_FragmentsOnCompositeTypes_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment fragOnObject on Dog {
-                      name
-                    }
-
-                    fragment fragOnInterface on Pet {
-                      name
-                    }
-
-                    fragment fragOnUnion on CatOrDog {
-                      ... on Dog {
-                        name
-                      }
-                    }
-                  ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5513FragmentsOnCompositeTypes());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5513_FragmentsOnCompositeTypes_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment fragOnScalar on Int {
-                      something
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5513FragmentsOnCompositeTypes());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5513FragmentsOnCompositeTypes);
-        }
-
-        [Fact]
-        public void Rule_5513_FragmentsOnCompositeTypes_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment inlineFragOnScalar on Dog {
-                      ... on Boolean {
-                        somethingElse
-                      }
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5513FragmentsOnCompositeTypes());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5513FragmentsOnCompositeTypes);
-        }
-
-        [Fact]
-        public void Rule_5514_FragmentsMustBeUsed_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment nameFragment on Dog {
-                      name
-                    }
-
-                    {
-                      dog {
-                        ...nameFragment
-                      }
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5514FragmentsMustBeUsed());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5514_FragmentsMustBeUsed_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment nameFragment on Dog {
-                      name
-                    }
-
-                    {
-                      dog {
-                        name
-                      }
-                    }"
-                );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5514FragmentsMustBeUsed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5514FragmentsMustBeUsed);
-        }
-
-        [Fact]
-        public void Rule_5521_FragmentSpreadTargetDefined_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                {
-                  dog {
-                    ...undefinedFragment
-                  }
-                }
-                "
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5521FragmentSpreadTargetDefined());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Contains(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5521FragmentSpreadTargetDefined);
-        }
-
-        [Fact]
-        public void Rule_5521_FragmentSpreadTargetDefined_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                {
-                    dog   {
-                    ...nameFragment
-                    }
-                }
-
-                fragment nameFragment on Dog {
-                  name
-                }
-                "
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5521FragmentSpreadTargetDefined());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      dog {
-                        ...nameFragment
-                      }
-                    }
-
-                    fragment nameFragment on Dog {
-                      name
-                      ...barkVolumeFragment
-                    }
-
-                    fragment barkVolumeFragment on Dog {
-                      barkVolume
-                      ...nameFragment
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5522FragmentSpreadsMustNotFormCycles());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Contains(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles);
-        }
-
-        [Fact]
-        public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      dog {
-                        ...dogFragment
-                      }
-                    }
-
-                    fragment dogFragment on Dog {
-                      name
-                      owner {
-                        ...ownerFragment
-                      }
-                    }
-
-                    fragment ownerFragment on Dog {
-                      name
-                      pets {
-                        ...dogFragment
-                      }
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5522FragmentSpreadsMustNotFormCycles());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Contains(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5522FragmentSpreadsMustNotFormCycles);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_in_scope_valid()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment dogFragment on Dog {
-                      ... on Dog {
-                        barkVolume
-                      }
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_in_scope_invalid()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment catInDogFragmentInvalid on Dog {
-                  ... on Cat {
-                    meowVolume
-                  }
-                }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5523FragmentSpreadIsPossible);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment petNameFragment on Pet {
-                      name
-                    }
-
-                    fragment interfaceWithinObjectFragment on Dog {
-                      ...petNameFragment
-                    }
-                    ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment catOrDogNameFragment on CatOrDog {
-                      ... on Cat {
-                        meowVolume
-                      }
-                    }
-
-                    fragment unionWithObjectFragment on Dog {
-                      ...catOrDogNameFragment
-                    }
-                    ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment unionWithInterface on Pet {
-                      ...dogOrHumanFragment
-                    }
-
-                    fragment dogOrHumanFragment on DogOrHuman {
-                      ... on Dog {
-                        barkVolume
-                      }
-                    }
-                    ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_invalid()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment nonIntersectingInterfaces on Pet {
-                      ...sentientFragment
-                    }
-
-                    fragment sentientFragment on Sentient {
-                      name
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5523FragmentSpreadIsPossible());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5523FragmentSpreadIsPossible);
-        }
-
-        [Fact]
-        public void Rule_561_ValuesOfCorrectType_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment goodBooleanArg on Arguments {
-                      booleanArgField(booleanArg: true)
-                    }
-
-                    fragment coercedIntIntoFloatArg on Arguments {
-                      # Note: The input coercion rules for Float allow Int literals.
-                      floatArgField(floatArg: 123)
-                    }
-
-                    query goodComplexDefaultValue($search: ComplexInput = { name: ""Fido"" }) {
-                      findDog(complex: $search)
-                    }
-                  ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R561ValuesOfCorrectType());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_561_ValuesOfCorrectType_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"fragment stringIntoInt on Arguments {
-                      intArgField(intArg: ""123"")
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R561ValuesOfCorrectType());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
-        }
-
-        [Fact]
-        public void Rule_561_ValuesOfCorrectType_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query badComplexValue {
-                      findDog(complex: { name: 123 })
-                    }"
-            );
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R561ValuesOfCorrectType());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
-        }
-
-        [Fact]
-        public void Rule_562_InputObjectFieldNames_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      findDog(complex: { name: ""Fido"" })
-                    }
-                  ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R562InputObjectFieldNames());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_562_InputObjectFieldNames_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      findDog(complex: { favoriteCookieFlavor: ""Bacon"" })
-                    }
-                    ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R562InputObjectFieldNames());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R562InputObjectFieldNames);
-        }
-
-        [Fact]
-        public void Rule_563_InputObjectFieldUniqueness_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                      field(arg: { field: true, field: false })
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R563InputObjectFieldUniqueness());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Contains(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R563InputObjectFieldUniqueness);
-        }
-
-        [Fact]
-        public void Rule_564_InputObjectRequiredFields_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                       findDog(complex: { owner: ""Fido"" })
-                  }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R564InputObjectRequiredFields());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
-        }
-
-        [Fact]
-        public void Rule_564_InputObjectRequiredFields_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                       findDog(complex: { name: null })
-                  }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R564InputObjectRequiredFields());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
-        }
-
-        [Fact]
-        public void Rule_57_DirectivesAreDefined_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                       findDog(complex: { name: ""Fido"" }) @skip(if: false)
-                  }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R571And573Directives());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_571_DirectivesAreDefined_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"{
-                       findDog(complex: { name: ""Fido"" }) @doesNotExists
-                  }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R571And573Directives());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R571DirectivesAreDefined);
-        }
-
-        [Fact]
-        public void Rule_572_DirectivesAreInValidLocations_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query {
-                  field @skip(if: $foo)
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R572DirectivesAreInValidLocations());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_572_DirectivesAreInValidLocations_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query @skip(if: $foo) {
-                  field
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R572DirectivesAreInValidLocations());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R572DirectivesAreInValidLocations);
-        }
-
-        [Fact]
-        public void Rule_573_DirectivesAreUniquePerLocation_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query ($foo: Boolean = true, $bar: Boolean = false) {
-                      field @skip(if: $foo) {
-                        subfieldA
-                      }
-                      field @skip(if: $bar) {
-                        subfieldB
-                      }
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R571And573Directives());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_573_DirectivesAreUniquePerLocation_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query ($foo: Boolean = true, $bar: Boolean = false) {
-                      field @skip(if: $foo) @skip(if: $bar)
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R571And573Directives());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R573DirectivesAreUniquePerLocation);
-        }
-
-        [Fact]
-        public void Rule_58_Variables_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query A($atOtherHomes: Boolean) {
-                      ...HouseTrainedFragment
-                    }
-
-                    query B($atOtherHomes: Boolean) {
-                      ...HouseTrainedFragment
-                    }
-
-                    fragment HouseTrainedFragment on Query {
-                      dog {
-                        isHousetrained(atOtherHomes: $atOtherHomes)
-                      }
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R581And582Variables());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_58_Variables_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query houseTrainedQuery($atOtherHomes: Boolean, $atOtherHomes: Boolean) {
-                      dog {
-                        isHousetrained(atOtherHomes: $atOtherHomes)
-                      }
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R581And582Variables());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R581VariableUniqueness);
-        }
-
-        [Fact]
-        public void Rule_582_VariablesAreInputTypes_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query takesBoolean($atOtherHomes: Boolean) {
-                      dog {
-                        isHousetrained(atOtherHomes: $atOtherHomes)
-                      }
-                    }
-
-                    query takesComplexInput($complexInput: ComplexInput) {
-                      findDog(complex: $complexInput) {
-                        name
-                      }
-                    }
-
-                    query TakesListOfBooleanBang($booleans: [Boolean!]) {
-                      booleanList(booleanListArg: $booleans)
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R581And582Variables());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_582_VariablesAreInputTypes_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query takesCat($cat: Cat) {
-                      __typename
-                    }
-
-                    query takesDogBang($dog: Dog!) {
-                      __typename
-                    }
-
-                    query takesListOfPet($pets: [Pet]) {
-                      __typename
-                    }
-
-                    query takesCatOrDog($catOrDog: CatOrDog) {
-                      __typename
-                    }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R581And582Variables());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Equal(4, result.Errors.Count());
-            Assert.Contains(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R582VariablesAreInputTypes
-                         && error.Message.StartsWith("Variables can only be input types. Objects, unions,"));
-        }
-
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query variableIsDefined($atOtherHomes: Boolean) {
-                      dog {
-                        isHousetrained(atOtherHomes: $atOtherHomes)
-                      }
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-        
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_valid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query variableIsDefinedUsedInSingleFragment($atOtherHomes: Boolean) {
-                      dog {
-                        ...isHousetrainedFragment
-                      }
-                    }
-
-                    fragment isHousetrainedFragment on Dog {
-                      isHousetrained(atOtherHomes: $atOtherHomes)
-                    }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-        
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_valid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"query housetrainedQueryOne($atOtherHomes: Boolean) {
-                      dog {
-                        ...isHousetrainedFragment
-                      }
-                }
-
-                query housetrainedQueryTwo($atOtherHomes: Boolean) {
-                  dog {
-                    ...isHousetrainedFragment
-                  }
-                }
-
-                fragment isHousetrainedFragment on Dog {
-                  isHousetrained(atOtherHomes: $atOtherHomes)
-                }");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-            query variableIsNotDefined {
-              dog {
-                isHousetrained(atOtherHomes: $atOtherHomes)
-              }
-            }
-             ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
-        }  
-        
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-            query variableIsNotDefinedUsedInSingleFragment {
-              dog {
-                ...isHousetrainedFragment
-              }
-            }
-
-            fragment isHousetrainedFragment on Dog {
-              isHousetrained(atOtherHomes: $atOtherHomes)
-            }
-             ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
-        } 
-        
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_invalid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-            query variableIsNotDefinedUsedInNestedFragment {
-              dog {
-                ...outerHousetrainedFragment
-              }
-            }
-
-            fragment outerHousetrainedFragment on Dog {
-              ...isHousetrainedFragment
-            }
-
-            fragment isHousetrainedFragment on Dog {
-              isHousetrained(atOtherHomes: $atOtherHomes)
-            }
-             ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
-        } 
-        
-        [Fact]
-        public void Rule_583_AllVariableUsesDefined_invalid4()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-            query housetrainedQueryOne($atOtherHomes: Boolean) {
-              dog {
-                ...isHousetrainedFragment
-              }
-            }
-
-            query housetrainedQueryTwoNotDefined {
-              dog {
-                ...isHousetrainedFragment
-              }
-            }
-
-            fragment isHousetrainedFragment on Dog {
-              isHousetrained(atOtherHomes: $atOtherHomes)
-            }
-             ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R583AllVariableUsesDefined());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R583AllVariableUsesDefined);
-        } 
-
-        [Fact]
-        public void Rule_584_AllVariablesUsed_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query variableUnused($atOtherHomes: Boolean) {
-                  dog {
-                    isHousetrained
-                  }
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R584AllVariablesUsed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
-                         && error.Message.Contains("atOtherHomes"));
-        }
-
-        [Fact]
-        public void Rule_584_AllVariablesUsed_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query variableNotUsedWithinFragment($atOtherHomes: Boolean) {
-                  dog {
-                    ...isHousetrainedWithoutVariableFragment
-                  }
-                }
-
-                fragment isHousetrainedWithoutVariableFragment on Dog {
-                  isHousetrained
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R584AllVariablesUsed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
-                         && error.Message.Contains("atOtherHomes"));
-        }
-
-        [Fact]
-        public void Rule_584_AllVariablesUsed_invalid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query queryWithUsedVar($atOtherHomes: Boolean) {
-                  dog {
-                    ...isHousetrainedFragment
-                  }
-                }
-
-                query queryWithExtraVar($atOtherHomes: Boolean, $extra: Int) {
-                  dog {
-                    ...isHousetrainedFragment
-                  }
-                }
-
-                fragment isHousetrainedFragment on Dog {
-                  isHousetrained(atOtherHomes: $atOtherHomes)
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R584AllVariablesUsed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R584AllVariablesUsed
-                         && error.Message.Contains("extra"));
-        }
-
-        [Fact]
-        public void Rule_584_AllVariablesUsed_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query variableUsedInFragment($atOtherHomes: Boolean) {
-                  dog {
-                    ...isHousetrainedFragment
-                  }
-                }
-
-                fragment isHousetrainedFragment on Dog {
-                  isHousetrained(atOtherHomes: $atOtherHomes)
-                }
-                 ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R584AllVariablesUsed());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_invalid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query intCannotGoIntoBoolean($intArg: Int) {
-                  arguments {
-                    booleanArgField(booleanArg: $intArg)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_invalid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query booleanListCannotGoIntoBoolean($booleanListArg: [Boolean]) {
-                  arguments {
-                    booleanArgField(booleanArg: $booleanListArg)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_invalid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query booleanArgQuery($booleanArg: Boolean) {
-                  arguments {
-                    nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_valid1()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query nonNullListToList($nonNullBooleanList: [Boolean]!) {
-                  arguments {
-                    booleanListArgField(booleanListArg: $nonNullBooleanList)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_invalid4()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query listToNonNullList($booleanList: [Boolean]) {
-                  arguments {
-                    nonNullBooleanListField(nonNullBooleanListArg: $booleanList)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R585AllVariableUsagesAreAllowed);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_valid2()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query booleanArgQueryWithDefault($booleanArg: Boolean) {
-                  arguments {
-                    optionalNonNullBooleanArgField(optionalBooleanArg: $booleanArg)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_585_AllVariableUsagesAreAllowed_valid3()
-        {
-            /* Given */
-            var document = Parser.ParseDocument(
-                @"
-                query booleanArgQueryWithDefault($booleanArg: Boolean = true) {
-                  arguments {
-                    nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
-                  }
-                }
-                ");
-
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R585AllVariableUsagesAreAllowed());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index 9a49c1cb9..13c288035 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -36,6 +36,10 @@
 
   <ItemGroup>
     <Compile Include="Bug\Bug_339.cs" />
+    <Compile Include="Validation\ValidatorFacts.Arguments.cs" />
+    <Compile Include="Validation\ValidatorFacts.cs" />
+    <Compile Include="Validation\ValidatorFacts.Fragments.cs" />
+    <Compile Include="Validation\ValidatorFacts.ValidatorFacts.Selections.cs" />
   </ItemGroup>
 
   <ItemGroup>

From ba7931d9438c54bd390e0ee0e18c00f1d805a154 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Fri, 11 Feb 2022 20:03:01 +0200
Subject: [PATCH 06/26] Migrating validation rules complete with tests

---
 src/graphql/Validation/ExecutionRules.cs      | 266 +++++++-----
 src/graphql/Validation/IRuleVisitorContext.cs |   2 +-
 src/graphql/Validation/RulesWalker.cs         |  20 +-
 src/graphql/Validation/TypeTracker.cs         |  17 +-
 src/graphql/Validation/VariableUsage.cs       |   5 +-
 .../Validation/ValidatorFacts.Directives.cs   | 137 ++++++
 .../Validation/ValidatorFacts.Fields.cs       | 184 ++++++++
 ...s.Rules.cs => ValidatorFacts.Variables.cs} | 401 ++----------------
 tests/graphql.tests/graphql.tests.csproj      |   3 +
 9 files changed, 544 insertions(+), 491 deletions(-)
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
 create mode 100644 tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
 rename tests/graphql.tests/Validation/{ValidatorFacts.Rules.cs => ValidatorFacts.Variables.cs} (61%)

diff --git a/src/graphql/Validation/ExecutionRules.cs b/src/graphql/Validation/ExecutionRules.cs
index 532a1f2a5..984bc9a85 100644
--- a/src/graphql/Validation/ExecutionRules.cs
+++ b/src/graphql/Validation/ExecutionRules.cs
@@ -1,9 +1,13 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
 namespace Tanka.GraphQL.Validation;
 
@@ -34,7 +38,7 @@ public static class ExecutionRules
         R5522FragmentSpreadsMustNotFormCycles(),
         R5523FragmentSpreadIsPossible(),
 
-        /*R561ValuesOfCorrectType(),
+        R561ValuesOfCorrectType(),
         R562InputObjectFieldNames(),
         R563InputObjectFieldUniqueness(),
         R564InputObjectRequiredFields(),
@@ -42,10 +46,11 @@ public static class ExecutionRules
         R571And573Directives(),
         R572DirectivesAreInValidLocations(),
 
+        
         R581And582Variables(),
         R583AllVariableUsesDefined(),
         R584AllVariablesUsed(),
-        R585AllVariableUsagesAreAllowed(),*/
+        R585AllVariableUsagesAreAllowed(),
     };
 
 
@@ -856,7 +861,7 @@ IEnumerable<TypeDefinition> GetPossibleTypes(TypeDefinition type, ISchema schema
             }
         }
     }
-    /*
+    
     public static CombineRule R561ValuesOfCorrectType()
     {
         return (context, rule) =>
@@ -866,20 +871,15 @@ public static CombineRule R561ValuesOfCorrectType()
 
             rule.EnterListValue += node =>
             {
-                var type = context.Tracker.GetNullableType(
-                    context.Tracker.GetParentInputType());
-
-                if (!(type is ListType)) IsValidScalar(context, node);
+                IsValidScalar(context, node);
             };
             rule.EnterObjectValue += node =>
             {
-                var type = context.Tracker.GetNamedType(
-                    context.Tracker.GetInputType());
+                var type = context.Tracker.InputType;
 
-                if (!(type is InputObjectDefinition inputType))
+                if (type is not InputObjectDefinition inputType)
                 {
                     IsValidScalar(context, node);
-                    // return false;
                     return;
                 }
 
@@ -902,34 +902,46 @@ public static CombineRule R561ValuesOfCorrectType()
             };
             rule.EnterObjectField += node =>
             {
-                var parentType = context.Tracker
-                    .GetNamedType(context.Tracker.GetParentInputType());
+                var parentType = context.Tracker.ParentInputType;
 
-                var fieldType = context.Tracker.GetInputType();
+                var fieldType = context.Tracker.InputType;
                 if (fieldType == null && parentType is InputObjectDefinition)
                     context.Error(
                         ValidationErrorCodes.R561ValuesOfCorrectType,
                         UnknownFieldMessage(
-                            parentType.ToString(),
+                            parentType.Name,
                             node.Name,
                             string.Empty),
                         node);
             };
             rule.EnterEnumValue += node =>
             {
-                var maybeEnumType = context.Tracker.GetNamedType(
-                    context.Tracker.GetInputType());
+                var maybeEnumType = context.Tracker.InputType;
 
-                if (!(maybeEnumType is EnumDefinition type))
+                if (maybeEnumType is not EnumDefinition type)
                     IsValidScalar(context, node);
-                
-                else if (type.ParseValue(node) == null)
-                    context.Error(
-                        ValidationErrorCodes.R561ValuesOfCorrectType,
-                        BadValueMessage(
-                            type.Name,
-                            node.ToString(),
-                            string.Empty));
+
+                else
+                {
+                    try
+                    {
+                        var value = new EnumConverter(type).ParseLiteral(node);
+
+                        if (value is null)
+                            throw new ValueCoercionException(
+                                $"{Printer.Print(type)} does not contain a value of '{Printer.Print(node)}'", node,
+                                node);
+                    }
+                    catch (Exception x)
+                    {
+                        context.Error(
+                            ValidationErrorCodes.R561ValuesOfCorrectType,
+                            BadValueMessage(
+                                type.Name,
+                                Printer.Print(node),
+                                string.Empty));
+                    }
+                }
             };
             rule.EnterIntValue += node => IsValidScalar(context, node);
             rule.EnterFloatValue += node => IsValidScalar(context, node);
@@ -971,22 +983,19 @@ void IsValidScalar(
             IRuleVisitorContext context,
             ValueBase node)
         {
-            var locationType = context.Tracker.GetInputType();
+            var locationType = context.Tracker.InputType;
 
             if (locationType == null)
                 return;
 
-            var maybeScalarType = context
-                .Tracker
-                .GetNamedType(locationType);
 
-            if (!(maybeScalarType is ScalarType type))
+            if (locationType is not ScalarDefinition type)
             {
                 context.Error(
                     ValidationErrorCodes.R561ValuesOfCorrectType,
                     BadValueMessage(
-                        maybeScalarType?.ToString(),
-                        node.ToString(),
+                        locationType.Name,
+                        Printer.Print(node),
                         string.Empty),
                     node);
 
@@ -995,15 +1004,19 @@ void IsValidScalar(
 
             try
             {
-                var converter = context.Schema.GetValueConverter(type.Name);
+                var converter = context.Schema.GetValueConverter(type.Name) ?? throw new ValueCoercionException(
+                    $"Value converter for '{Printer.Print(type)}' not found from schema.", 
+                    type, 
+                    type);
+
                 converter.ParseLiteral(node);
             }
             catch (Exception e)
             {
                 context.Error(
                     ValidationErrorCodes.R561ValuesOfCorrectType,
-                    BadValueMessage(locationType?.ToString(),
-                        node.ToString(),
+                    BadValueMessage(locationType.Name,
+                        Printer.Print(node),
                         e.ToString()),
                     node);
             }
@@ -1018,8 +1031,7 @@ public static CombineRule R562InputObjectFieldNames()
             {
                 var inputFieldName = inputField.Name;
 
-                if (!(context.Tracker
-                    .GetParentInputType() is InputObjectDefinition parentType))
+                if (context.Tracker.ParentInputType is not InputObjectDefinition parentType)
                     return;
 
                 var inputFieldDefinition = context.Schema
@@ -1067,7 +1079,7 @@ public static CombineRule R564InputObjectRequiredFields()
         {
             rule.EnterObjectValue += node =>
             {
-                var inputObject = context.Tracker.GetInputType() as InputObjectDefinition;
+                var inputObject = context.Tracker.InputType as InputObjectDefinition;
 
                 if (inputObject == null)
                     return;
@@ -1080,7 +1092,7 @@ public static CombineRule R564InputObjectRequiredFields()
                     var type = fieldDefinition.Value.Type;
                     var defaultValue = fieldDefinition.Value.DefaultValue;
 
-                    if (type is NonNullType NonNullType && defaultValue == null)
+                    if (type is NonNullType nonNullType && defaultValue == null)
                     {
                         var fieldName = fieldDefinition.Key;
                         if (!fields.TryGetValue(fieldName, out var field))
@@ -1092,7 +1104,7 @@ public static CombineRule R564InputObjectRequiredFields()
                                 "fields. An input field is required if it has a non‐null type and " +
                                 "does not have a default value. Otherwise, the input object field " +
                                 "is optional. " +
-                                $"Field '{NonNullType}.{fieldName}' is required.",
+                                $"Field '{nonNullType}.{fieldName}' is required.",
                                 (INode) node);
 
                             return;
@@ -1106,7 +1118,7 @@ public static CombineRule R564InputObjectRequiredFields()
                                 "fields. An input field is required if it has a non‐null type and " +
                                 "does not have a default value. Otherwise, the input object field " +
                                 "is optional. " +
-                                $"Field '{NonNullType}.{field}' value cannot be null.",
+                                $"Field '{nonNullType}.{field}' value cannot be null.",
                                 node, field);
                     }
                 }
@@ -1114,6 +1126,7 @@ public static CombineRule R564InputObjectRequiredFields()
         };
     }
 
+    
     /// <summary>
     ///     5.7.1, 5.7.3
     /// </summary>
@@ -1145,9 +1158,9 @@ public static CombineRule R571And573Directives()
         };
 
         // 5.7.3
-        void CheckDirectives(IRuleVisitorContext context, IEnumerable<Directive> directives)
+        void CheckDirectives(IRuleVisitorContext context, Language.Nodes.Directives? directives)
         {
-            if (directives == null)
+            if (directives is null || directives.Count == 0)
                 return;
 
             var knownDirectives = new List<string>();
@@ -1182,19 +1195,20 @@ public static CombineRule R572DirectivesAreInValidLocations()
         void CheckDirectives(
             IRuleVisitorContext context,
             INode node,
-            IEnumerable<Directive> directives)
+            Language.Nodes.Directives? directives)
         {
-            if (directives == null)
+            if (directives == null || directives.Count == 0)
                 return;
 
             var currentLocation = GetLocation(node);
             foreach (var directive in directives)
             {
-                var directiveType = context.Schema.GetDirectiveType(
-                    directive.Name);
+                var directiveType = context.Schema.GetDirectiveType(directive.Name);
 
-                var validLocations = directiveType.Locations
-                    .ToArray();
+                if (directiveType is null)
+                    continue;
+
+                var validLocations = directiveType.DirectiveLocations;
 
                 if (!validLocations.Contains(currentLocation))
                 {
@@ -1211,7 +1225,7 @@ void CheckDirectives(
             }
         }
 
-        DirectiveLocation GetLocation(INode appliedTo)
+        string GetLocation(INode appliedTo)
         {
             switch (appliedTo.Kind)
             {
@@ -1219,59 +1233,60 @@ DirectiveLocation GetLocation(INode appliedTo)
                     switch (((OperationDefinition) appliedTo).Operation)
                     {
                         case OperationType.Query:
-                            return DirectiveLocation.QUERY;
+                            return ExecutableDirectiveLocations.QUERY;
                         case OperationType.Mutation:
-                            return DirectiveLocation.MUTATION;
+                            return ExecutableDirectiveLocations.MUTATION;
                         case OperationType.Subscription:
-                            return DirectiveLocation.SUBSCRIPTION;
+                            return ExecutableDirectiveLocations.SUBSCRIPTION;
                     }
 
                     break;
                 case NodeKind.FieldSelection:
-                    return DirectiveLocation.FIELD;
+                    return ExecutableDirectiveLocations.FIELD;
                 case NodeKind.FragmentSpread:
-                    return DirectiveLocation.FRAGMENT_SPREAD;
+                    return ExecutableDirectiveLocations.FRAGMENT_SPREAD;
                 case NodeKind.InlineFragment:
-                    return DirectiveLocation.INLINE_FRAGMENT;
+                    return ExecutableDirectiveLocations.INLINE_FRAGMENT;
                 case NodeKind.FragmentDefinition:
-                    return DirectiveLocation.FRAGMENT_DEFINITION;
+                    return ExecutableDirectiveLocations.FRAGMENT_DEFINITION;
                 case NodeKind.VariableDefinition:
                     throw new InvalidOperationException($"Not supported");
                 case NodeKind.SchemaDefinition:
-                    //case NodeKind.SCHEMA_EXTENSION:
-                    return DirectiveLocation.SCHEMA;
+                case NodeKind.SchemaExtension:
+                    return TypeSystemDirectiveLocations.SCHEMA;
                 case NodeKind.ScalarDefinition:
-                    //case NodeKind.SCALAR_TYPE_EXTENSION:
-                    return DirectiveLocation.SCALAR;
+                    //case NodeKind.TypeExtension:
+                    return TypeSystemDirectiveLocations.SCALAR;
                 case NodeKind.ObjectDefinition:
                     //case NodeKind.OBJECT_TYPE_EXTENSION:
-                    return DirectiveLocation.OBJECT;
+                    return TypeSystemDirectiveLocations.OBJECT;
                 case NodeKind.FieldDefinition:
-                    return DirectiveLocation.FIELD_DEFINITION;
+                    return TypeSystemDirectiveLocations.FIELD_DEFINITION;
                 case NodeKind.InterfaceDefinition:
                     //case NodeKind.INTERFACE_TYPE_EXTENSION:
-                    return DirectiveLocation.INTERFACE;
+                    return TypeSystemDirectiveLocations.INTERFACE;
                 case NodeKind.UnionDefinition:
                     //case NodeKind.UNION_TYPE_EXTENSION:
-                    return DirectiveLocation.UNION;
+                    return TypeSystemDirectiveLocations.UNION;
                 case NodeKind.EnumDefinition:
                     //case NodeKind.ENUM_TYPE_EXTENSION:
-                    return DirectiveLocation.ENUM;
+                    return TypeSystemDirectiveLocations.ENUM;
                 case NodeKind.EnumValueDefinition:
-                    return DirectiveLocation.ENUM_VALUE;
+                    return TypeSystemDirectiveLocations.ENUM_VALUE;
                 case NodeKind.InputObjectDefinition:
                     //case NodeKind.INPUT_OBJECT_TYPE_EXTENSION:
-                    return DirectiveLocation.INPUT_OBJECT;
+                    return TypeSystemDirectiveLocations.INPUT_OBJECT;
                 case NodeKind.Argument:
-                    return DirectiveLocation.ARGUMENT_DEFINITION; //todo: is this correct?
+                    return TypeSystemDirectiveLocations.ARGUMENT_DEFINITION;
                 case NodeKind.InputValueDefinition:
-                    return DirectiveLocation.INPUT_FIELD_DEFINITION;
+                    return TypeSystemDirectiveLocations.INPUT_FIELD_DEFINITION;
             }
 
             throw new InvalidOperationException($"Not supported location: {appliedTo.Kind}");
         }
     }
 
+    
     /// <summary>
     ///     5.8.1, 5.8.2
     /// </summary>
@@ -1305,8 +1320,8 @@ public static CombineRule R581And582Variables()
                     knownVariables.Add(variableName);
 
                     // 5.8.2
-                    var variableType = Ast.TypeFromAst(context.Schema, variableUsage.Type);
-                    if (!TypeIs.IsInputType(variableType))
+                    var variableType = Ast.UnwrapAndResolveType(context.Schema, variableUsage.Type);
+                    if (variableType is null ||!TypeIs.IsInputType(variableType))
                         context.Error(
                             ValidationErrorCodes.R582VariablesAreInputTypes,
                             "Variables can only be input types. Objects, unions, " +
@@ -1397,38 +1412,43 @@ public static CombineRule R585AllVariableUsagesAreAllowed()
         return (context, rule) =>
         {
             var variableDefinitions = new Dictionary<string, VariableDefinition>();
+            var usages = new List<(Variable Variable, TypeBase? Type, ValueBase? DefaultValue)>();
 
-            rule.EnterVariableDefinition += node => 
+            rule.EnterVariableDefinition += node =>
                 variableDefinitions[node.Variable.Name] = node;
-            rule.EnterOperationDefinition += node =>
+            rule.EnterOperationDefinition += node => { variableDefinitions.Clear(); };
+
+            rule.EnterVariable += node =>
             {
-                variableDefinitions.Clear();
+                var type = context.Tracker.ArgumentDefinition?.Type;
+                var defaultValue = context.Tracker.DefaultValue;
+                usages.Add((node, type, defaultValue));
             };
+
             rule.LeaveOperationDefinition += node =>
             {
-                var usages = context.GetRecursiveVariables(node);
+                //var usages = context.GetRecursiveVariables(node);
 
                 foreach (var usage in usages)
                 {
-                    var variableName = usage.Node.Name;
+                    var variableName = usage.Variable.Name;
 
                     if (!variableDefinitions.TryGetValue(variableName, out var variableDefinition))
                     {
                         return;
                     }
 
-                    var variableType = Ast.TypeFromAst(context.Schema, variableDefinition.Type);
-                    if (variableType != null && !AllowedVariableUsage(
+                    if (!AllowedVariableUsage(
                             context.Schema,
-                            variableType,
-                            variableDefinition.DefaultValue,
+                            variableDefinition.Type,
+                            variableDefinition?.DefaultValue,
                             usage.Type,
                             usage.DefaultValue))
                     {
                         context.Error(
                             ValidationErrorCodes.R585AllVariableUsagesAreAllowed,
                             $"Variable usages must be compatible with the arguments they are passed to. " +
-                            $"Variable '{variableName}' of type '{variableType}' used in " +
+                            $"Variable '{variableName}' of type '{variableDefinition?.Type}' used in " +
                             $"position expecting type '{usage.Type}'");
                     }
                 }
@@ -1437,22 +1457,23 @@ public static CombineRule R585AllVariableUsagesAreAllowed()
 
         bool AllowedVariableUsage(
             ISchema schema,
-            IType varType,
-            object varDefaultValue,
-            IType locationType,
-            object locationDefaultValue
-            )
+            TypeBase varType,
+            object? varDefaultValue,
+            TypeBase? locationType,
+            object? locationDefaultValue
+        )
         {
-            if (locationType is NonNullType NonNullTypeTypeLocationType && !(varType is NonNullType)) 
+            if (locationType is NonNullType nonNullTypeTypeLocationType && varType is not NonNullType)
             {
                 bool hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
                 bool hasLocationDefaultValue = locationDefaultValue != null;
 
-                if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue) {
+                if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue)
+                {
                     return false;
                 }
 
-                var nullableLocationType = NonNullTypeTypeLocationType.OfType;
+                var nullableLocationType = nonNullTypeTypeLocationType.OfType;
                 return IsTypeSubTypeOf(schema, varType, nullableLocationType);
             }
 
@@ -1462,60 +1483,71 @@ object locationDefaultValue
         //todo: Move to TypeIs
         bool IsTypeSubTypeOf(
             ISchema schema,
-            IType maybeSubType,
-            IType superType
+            TypeBase maybeSubType,
+            TypeBase superType
         )
         {
             // Equivalent type is a valid subtype
-            if (Equals(maybeSubType, superType)) {
-                return true;
+            if (maybeSubType is NamedType namedSubType && superType is NamedType namedSuperType)
+            {
+                if (namedSubType.Name.Equals(namedSuperType.Name))
+                    return true;
             }
 
             // If superType is non-null, maybeSubType must also be non-null.
-            if (superType is NonNullType NonNullTypeTypeSuperType) {
-                if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType) {
+            if (superType is NonNullType nonNullTypeTypeSuperType)
+            {
+                if (maybeSubType is NonNullType nonNullTypeTypeMaybeSubType)
+                {
                     return IsTypeSubTypeOf(
-                        schema, 
-                        NonNullTypeTypeMaybeSubType.OfType, 
-                        NonNullTypeTypeSuperType.OfType);
+                        schema,
+                        nonNullTypeTypeMaybeSubType.OfType,
+                        nonNullTypeTypeSuperType.OfType);
                 }
+
                 return false;
             }
 
-            if (maybeSubType is NonNullType NonNullTypeTypeMaybeSubType2) {
+            if (maybeSubType is NonNullType nonNullTypeTypeMaybeSubType2)
+            {
                 // If superType is nullable, maybeSubType may be non-null or nullable.
-                return IsTypeSubTypeOf(schema, NonNullTypeTypeMaybeSubType2.OfType, superType);
+                return IsTypeSubTypeOf(schema, nonNullTypeTypeMaybeSubType2.OfType, superType);
             }
 
             // If superType type is a list, maybeSubType type must also be a list.
-            if (superType is ListType listSuperType) {
-                if (maybeSubType is ListType listMaybeSubType) {
+            if (superType is ListType listSuperType)
+            {
+                if (maybeSubType is ListType listMaybeSubType)
+                {
                     return IsTypeSubTypeOf(
-                        schema, 
-                        listMaybeSubType.OfType, 
+                        schema,
+                        listMaybeSubType.OfType,
                         listSuperType.OfType);
                 }
+
                 return false;
             }
 
-            if (maybeSubType is List) {
+            if (maybeSubType is ListType)
+            {
                 // If superType is not a list, maybeSubType must also be not a list.
                 return false;
             }
 
             // If superType type is an abstract type, maybeSubType type may be a currently
             // possible object type.
-            if (superType is IAbstractType abstractSuperType &&
-                maybeSubType is ObjectDefinition objectMaybeSubType &&
-                abstractSuperType.IsPossible(objectMaybeSubType)) 
+            var superTypeDefinition = schema.GetNamedType(superType.Unwrap().Name);
+            var maybeSubTypeDefinition = schema.GetNamedType(maybeSubType.Unwrap().Name);
+
+            var possibleTypes  = superTypeDefinition switch
             {
-                return true;
-            }
+                null => Enumerable.Empty<TypeDefinition>(),
+                InterfaceDefinition interfaceDefinition => schema.GetPossibleTypes(interfaceDefinition),
+                UnionDefinition unionDefinition => schema.GetPossibleTypes(unionDefinition),
+                _ => Enumerable.Empty<TypeDefinition>()
+            };
 
-            // Otherwise, the child type is not a valid subtype of the parent type.
-            return false;
+            return possibleTypes.Contains(maybeSubTypeDefinition);
         }
     }
-
-    */
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/IRuleVisitorContext.cs b/src/graphql/Validation/IRuleVisitorContext.cs
index 0afd80b82..d0e55d34f 100644
--- a/src/graphql/Validation/IRuleVisitorContext.cs
+++ b/src/graphql/Validation/IRuleVisitorContext.cs
@@ -28,7 +28,7 @@ List<VariableUsage> GetVariables(
         IEnumerable<VariableUsage> GetRecursiveVariables(
             OperationDefinition operation);
 
-        FragmentDefinition GetFragment(string name);
+        FragmentDefinition? GetFragment(string name);
         List<FragmentSpread> GetFragmentSpreads(SelectionSet node);
 
         IEnumerable<FragmentDefinition> GetRecursivelyReferencedFragments(
diff --git a/src/graphql/Validation/RulesWalker.cs b/src/graphql/Validation/RulesWalker.cs
index defeef0e0..683d9423c 100644
--- a/src/graphql/Validation/RulesWalker.cs
+++ b/src/graphql/Validation/RulesWalker.cs
@@ -71,8 +71,8 @@ public List<VariableUsage> GetVariables(
                             usages.Add(new VariableUsage
                             {
                                 Node = node,
-                                Type = null,//context.Tracker.GetInputType(),
-                                DefaultValue = null,//context.Tracker.GetDefaultValue()
+                                Type = context.Tracker.InputType,
+                                DefaultValue = context.Tracker.DefaultValue
                             });
                         };
                     }
@@ -90,7 +90,8 @@ public List<VariableUsage> GetVariables(
         public IEnumerable<VariableUsage> GetRecursiveVariables(
             OperationDefinition operation)
         {
-            if (_variables.TryGetValue(operation, out var results)) return results;
+            if (_variables.TryGetValue(operation, out var results)) 
+                return results;
 
             var usages = GetVariables(operation);
 
@@ -118,7 +119,7 @@ public List<FragmentSpread> GetFragmentSpreads(SelectionSet node)
             {
                 var set = setsToVisit.Pop();
 
-                foreach (var selection in set.Selections)
+                foreach (var selection in set)
                     switch (selection)
                     {
                         case FragmentSpread spread:
@@ -126,18 +127,9 @@ public List<FragmentSpread> GetFragmentSpreads(SelectionSet node)
                             break;
                         case InlineFragment inlineFragment:
                         {
-                            if (inlineFragment.SelectionSet != null)
-                                setsToVisit.Push(inlineFragment.SelectionSet);
-                            break;
-                        }
-                        /*
-                        case OperationDefinition operationDefinition:
-                        {
-                            if (operationDefinition.SelectionSet != null)
-                                setsToVisit.Push(operationDefinition.SelectionSet);
+                            setsToVisit.Push(inlineFragment.SelectionSet);
                             break;
                         }
-                        */
                         case FieldSelection fieldSelection:
                         {
                             if (fieldSelection.SelectionSet != null) setsToVisit.Push(fieldSelection.SelectionSet);
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index 09a0b3a7a..d479a9489 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -165,7 +165,7 @@ public TypeTracker(ISchema schema)
             DefaultValues.TryPop(out _);
             InputTypes.TryPop(out _);
         };
-
+        
         EnterListValue = node =>
         {
             /*if (InputType is not null)
@@ -175,6 +175,7 @@ public TypeTracker(ISchema schema)
             */
 
             // List positions never have a default value
+            
             DefaultValues.Push(null);
         };
         LeaveListValue = node =>
@@ -231,6 +232,20 @@ public TypeTracker(ISchema schema)
 
     public TypeDefinition? InputType => InputTypes.Count > 0 ? InputTypes.Peek() : null;
 
+    public TypeDefinition? ParentInputType
+    {
+        get
+        {
+            if (InputTypes.Count <= 1)
+                return null;
+
+            var currentType = InputTypes.Pop();
+            var parentInputType = InputTypes.Peek();
+            InputTypes.Push(currentType);
+            return parentInputType;
+        }
+    }
+
     public TypeDefinition? ParentType => ParentTypes.Count > 0 ? ParentTypes.Peek() : null;
 
     protected Stack<ValueBase?> DefaultValues { get; } = new();
diff --git a/src/graphql/Validation/VariableUsage.cs b/src/graphql/Validation/VariableUsage.cs
index c4ba9bd9b..538d71b2a 100644
--- a/src/graphql/Validation/VariableUsage.cs
+++ b/src/graphql/Validation/VariableUsage.cs
@@ -1,4 +1,5 @@
 using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Validation;
 
@@ -6,7 +7,7 @@ public struct VariableUsage
 {
     public Variable Node;
 
-    public TypeBase Type;
+    public TypeDefinition? Type;
 
-    public object DefaultValue;
+    public object? DefaultValue;
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs b/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
new file mode 100644
index 000000000..f2f7547f9
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
@@ -0,0 +1,137 @@
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_57_DirectivesAreDefined_valid1()
+    {
+        /* Given */
+        var document =
+            @"{
+                       findDog(complex: { name: ""Fido"" }) @skip(if: false)
+                  }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_571_DirectivesAreDefined_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                       findDog(complex: { name: ""Fido"" }) @doesNotExists
+                  }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R571DirectivesAreDefined);
+    }
+
+    [Fact]
+    public void Rule_572_DirectivesAreInValidLocations_valid1()
+    {
+        /* Given */
+        var document = 
+            @"
+                query {
+                  field @skip(if: $foo)
+                }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R572DirectivesAreInValidLocations());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_572_DirectivesAreInValidLocations_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"
+                query @skip(if: $foo) {
+                  field
+                }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R572DirectivesAreInValidLocations());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R572DirectivesAreInValidLocations);
+    }
+
+    [Fact]
+    public void Rule_573_DirectivesAreUniquePerLocation_valid1()
+    {
+        /* Given */
+        var document =
+            @"query ($foo: Boolean = true, $bar: Boolean = false) {
+                      field @skip(if: $foo) {
+                        subfieldA
+                      }
+                      field @skip(if: $bar) {
+                        subfieldB
+                      }
+                    }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_573_DirectivesAreUniquePerLocation_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"query ($foo: Boolean = true, $bar: Boolean = false) {
+                      field @skip(if: $foo) @skip(if: $bar)
+                    }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R571And573Directives());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R573DirectivesAreUniquePerLocation);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs b/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
new file mode 100644
index 000000000..6c2108ff2
--- /dev/null
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
@@ -0,0 +1,184 @@
+using Tanka.GraphQL.Validation;
+using Xunit;
+
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
+{
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_valid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment goodBooleanArg on Arguments {
+                      booleanArgField(booleanArg: true)
+                    }
+
+                    fragment coercedIntIntoFloatArg on Arguments {
+                      # Note: The input coercion rules for Float allow Int literals.
+                      floatArgField(floatArg: 123)
+                    }
+
+                    query goodComplexDefaultValue($search: ComplexInput = { name: ""Fido"" }) {
+                      findDog(complex: $search)
+                    }
+                  ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"fragment stringIntoInt on Arguments {
+                      intArgField(intArg: ""123"")
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
+    }
+
+    [Fact]
+    public void Rule_561_ValuesOfCorrectType_invalid2()
+    {
+        /* Given */
+        var document = 
+            @"query badComplexValue {
+                      findDog(complex: { name: 123 })
+                    }";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R561ValuesOfCorrectType());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
+    }
+
+    [Fact]
+    public void Rule_562_InputObjectFieldNames_valid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                      findDog(complex: { name: ""Fido"" })
+                    }
+                  ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R562InputObjectFieldNames());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_562_InputObjectFieldNames_invalid1()
+    {
+        /* Given */
+        var document =
+            @"{
+                      findDog(complex: { favoriteCookieFlavor: ""Bacon"" })
+                    }
+                    ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R562InputObjectFieldNames());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R562InputObjectFieldNames);
+    }
+
+    [Fact]
+    public void Rule_563_InputObjectFieldUniqueness_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                      field(arg: { field: true, field: false })
+                    }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R563InputObjectFieldUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Contains(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R563InputObjectFieldUniqueness);
+    }
+
+    [Fact]
+    public void Rule_564_InputObjectRequiredFields_invalid1()
+    {
+        /* Given */
+        var document = 
+            @"{
+                       findDog(complex: { owner: ""Fido"" })
+                  }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R564InputObjectRequiredFields());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
+    }
+
+    [Fact]
+    public void Rule_564_InputObjectRequiredFields_invalid2()
+    {
+        /* Given */
+        var document =
+            @"{
+                       findDog(complex: { name: null })
+                  }
+                 ";
+
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R564InputObjectRequiredFields());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Rules.cs b/tests/graphql.tests/Validation/ValidatorFacts.Variables.cs
similarity index 61%
rename from tests/graphql.tests/Validation/ValidatorFacts.Rules.cs
rename to tests/graphql.tests/Validation/ValidatorFacts.Variables.cs
index 5c1252df8..a8fc2490b 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.Rules.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Variables.cs
@@ -1,6 +1,4 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Language.Nodes;
+using System.Linq;
 using Tanka.GraphQL.Validation;
 using Xunit;
 
@@ -8,320 +6,11 @@ namespace Tanka.GraphQL.Tests.Validation;
 
 public partial class ValidatorFacts
 {
-    [Fact]
-    public void Rule_561_ValuesOfCorrectType_valid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"fragment goodBooleanArg on Arguments {
-                      booleanArgField(booleanArg: true)
-                    }
-
-                    fragment coercedIntIntoFloatArg on Arguments {
-                      # Note: The input coercion rules for Float allow Int literals.
-                      floatArgField(floatArg: 123)
-                    }
-
-                    query goodComplexDefaultValue($search: ComplexInput = { name: ""Fido"" }) {
-                      findDog(complex: $search)
-                    }
-                  ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R561ValuesOfCorrectType());
-
-        /* Then */
-        Assert.True(result.IsValid);
-    }
-
-    [Fact]
-    public void Rule_561_ValuesOfCorrectType_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"fragment stringIntoInt on Arguments {
-                      intArgField(intArg: ""123"")
-                    }"
-        );
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R561ValuesOfCorrectType());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
-    }
-
-    [Fact]
-    public void Rule_561_ValuesOfCorrectType_invalid2()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"query badComplexValue {
-                      findDog(complex: { name: 123 })
-                    }"
-        );
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R561ValuesOfCorrectType());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R561ValuesOfCorrectType);
-    }
-
-    [Fact]
-    public void Rule_562_InputObjectFieldNames_valid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                      findDog(complex: { name: ""Fido"" })
-                    }
-                  ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R562InputObjectFieldNames());
-
-        /* Then */
-        Assert.True(result.IsValid);
-    }
-
-    [Fact]
-    public void Rule_562_InputObjectFieldNames_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                      findDog(complex: { favoriteCookieFlavor: ""Bacon"" })
-                    }
-                    ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R562InputObjectFieldNames());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R562InputObjectFieldNames);
-    }
-
-    [Fact]
-    public void Rule_563_InputObjectFieldUniqueness_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                      field(arg: { field: true, field: false })
-                    }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R563InputObjectFieldUniqueness());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Contains(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R563InputObjectFieldUniqueness);
-    }
-
-    [Fact]
-    public void Rule_564_InputObjectRequiredFields_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                       findDog(complex: { owner: ""Fido"" })
-                  }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R564InputObjectRequiredFields());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
-    }
-
-    [Fact]
-    public void Rule_564_InputObjectRequiredFields_invalid2()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                       findDog(complex: { name: null })
-                  }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R564InputObjectRequiredFields());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R564InputObjectRequiredFields);
-    }
-
-    [Fact]
-    public void Rule_57_DirectivesAreDefined_valid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                       findDog(complex: { name: ""Fido"" }) @skip(if: false)
-                  }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R571And573Directives());
-
-        /* Then */
-        Assert.True(result.IsValid);
-    }
-
-    [Fact]
-    public void Rule_571_DirectivesAreDefined_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"{
-                       findDog(complex: { name: ""Fido"" }) @doesNotExists
-                  }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R571And573Directives());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R571DirectivesAreDefined);
-    }
-
-    [Fact]
-    public void Rule_572_DirectivesAreInValidLocations_valid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"
-                query {
-                  field @skip(if: $foo)
-                }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R572DirectivesAreInValidLocations());
-
-        /* Then */
-        Assert.True(result.IsValid);
-    }
-
-    [Fact]
-    public void Rule_572_DirectivesAreInValidLocations_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"
-                query @skip(if: $foo) {
-                  field
-                }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R572DirectivesAreInValidLocations());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R572DirectivesAreInValidLocations);
-    }
-
-    [Fact]
-    public void Rule_573_DirectivesAreUniquePerLocation_valid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"query ($foo: Boolean = true, $bar: Boolean = false) {
-                      field @skip(if: $foo) {
-                        subfieldA
-                      }
-                      field @skip(if: $bar) {
-                        subfieldB
-                      }
-                    }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R571And573Directives());
-
-        /* Then */
-        Assert.True(result.IsValid);
-    }
-
-    [Fact]
-    public void Rule_573_DirectivesAreUniquePerLocation_invalid1()
-    {
-        /* Given */
-        var document = Parser.ParseDocument(
-            @"query ($foo: Boolean = true, $bar: Boolean = false) {
-                      field @skip(if: $foo) @skip(if: $bar)
-                    }
-                 ");
-
-        /* When */
-        var result = Validate(
-            document,
-            ExecutionRules.R571And573Directives());
-
-        /* Then */
-        Assert.False(result.IsValid);
-        Assert.Single(
-            result.Errors,
-            error => error.Code == ValidationErrorCodes.R573DirectivesAreUniquePerLocation);
-    }
-
     [Fact]
     public void Rule_58_Variables_valid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query A($atOtherHomes: Boolean) {
                       ...HouseTrainedFragment
                     }
@@ -335,7 +24,7 @@ fragment HouseTrainedFragment on Query {
                         isHousetrained(atOtherHomes: $atOtherHomes)
                       }
                     }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -350,13 +39,13 @@ fragment HouseTrainedFragment on Query {
     public void Rule_58_Variables_invalid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query houseTrainedQuery($atOtherHomes: Boolean, $atOtherHomes: Boolean) {
                       dog {
                         isHousetrained(atOtherHomes: $atOtherHomes)
                       }
                     }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -374,7 +63,7 @@ public void Rule_58_Variables_invalid1()
     public void Rule_582_VariablesAreInputTypes_valid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query takesBoolean($atOtherHomes: Boolean) {
                       dog {
                         isHousetrained(atOtherHomes: $atOtherHomes)
@@ -390,7 +79,7 @@ query takesComplexInput($complexInput: ComplexInput) {
                     query TakesListOfBooleanBang($booleans: [Boolean!]) {
                       booleanList(booleanListArg: $booleans)
                     }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -405,7 +94,7 @@ query TakesListOfBooleanBang($booleans: [Boolean!]) {
     public void Rule_582_VariablesAreInputTypes_invalid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query takesCat($cat: Cat) {
                       __typename
                     }
@@ -421,7 +110,7 @@ query takesListOfPet($pets: [Pet]) {
                     query takesCatOrDog($catOrDog: CatOrDog) {
                       __typename
                     }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -441,12 +130,12 @@ query takesCatOrDog($catOrDog: CatOrDog) {
     public void Rule_583_AllVariableUsesDefined_valid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query variableIsDefined($atOtherHomes: Boolean) {
                       dog {
                         isHousetrained(atOtherHomes: $atOtherHomes)
                       }
-                    }");
+                    }";
 
         /* When */
         var result = Validate(
@@ -461,7 +150,7 @@ public void Rule_583_AllVariableUsesDefined_valid1()
     public void Rule_583_AllVariableUsesDefined_valid2()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query variableIsDefinedUsedInSingleFragment($atOtherHomes: Boolean) {
                       dog {
                         ...isHousetrainedFragment
@@ -470,7 +159,7 @@ public void Rule_583_AllVariableUsesDefined_valid2()
 
                     fragment isHousetrainedFragment on Dog {
                       isHousetrained(atOtherHomes: $atOtherHomes)
-                    }");
+                    }";
 
         /* When */
         var result = Validate(
@@ -485,7 +174,7 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_583_AllVariableUsesDefined_valid3()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"query housetrainedQueryOne($atOtherHomes: Boolean) {
                       dog {
                         ...isHousetrainedFragment
@@ -500,7 +189,7 @@ query housetrainedQueryTwo($atOtherHomes: Boolean) {
 
                 fragment isHousetrainedFragment on Dog {
                   isHousetrained(atOtherHomes: $atOtherHomes)
-                }");
+                }";
 
         /* When */
         var result = Validate(
@@ -515,14 +204,14 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_583_AllVariableUsesDefined_invalid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
             query variableIsNotDefined {
               dog {
                 isHousetrained(atOtherHomes: $atOtherHomes)
               }
             }
-             ");
+             ";
 
         /* When */
         var result = Validate(
@@ -540,7 +229,7 @@ query variableIsNotDefined {
     public void Rule_583_AllVariableUsesDefined_invalid2()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
             query variableIsNotDefinedUsedInSingleFragment {
               dog {
@@ -551,7 +240,7 @@ query variableIsNotDefinedUsedInSingleFragment {
             fragment isHousetrainedFragment on Dog {
               isHousetrained(atOtherHomes: $atOtherHomes)
             }
-             ");
+             ";
 
         /* When */
         var result = Validate(
@@ -569,7 +258,7 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_583_AllVariableUsesDefined_invalid3()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
             query variableIsNotDefinedUsedInNestedFragment {
               dog {
@@ -584,7 +273,7 @@ fragment outerHousetrainedFragment on Dog {
             fragment isHousetrainedFragment on Dog {
               isHousetrained(atOtherHomes: $atOtherHomes)
             }
-             ");
+             ";
 
         /* When */
         var result = Validate(
@@ -602,7 +291,7 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_583_AllVariableUsesDefined_invalid4()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
             query housetrainedQueryOne($atOtherHomes: Boolean) {
               dog {
@@ -619,7 +308,7 @@ query housetrainedQueryTwoNotDefined {
             fragment isHousetrainedFragment on Dog {
               isHousetrained(atOtherHomes: $atOtherHomes)
             }
-             ");
+             ";
 
         /* When */
         var result = Validate(
@@ -637,14 +326,14 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_584_AllVariablesUsed_invalid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query variableUnused($atOtherHomes: Boolean) {
                   dog {
                     isHousetrained
                   }
                 }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -663,7 +352,7 @@ query variableUnused($atOtherHomes: Boolean) {
     public void Rule_584_AllVariablesUsed_invalid2()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query variableNotUsedWithinFragment($atOtherHomes: Boolean) {
                   dog {
@@ -674,7 +363,7 @@ query variableNotUsedWithinFragment($atOtherHomes: Boolean) {
                 fragment isHousetrainedWithoutVariableFragment on Dog {
                   isHousetrained
                 }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -693,7 +382,7 @@ fragment isHousetrainedWithoutVariableFragment on Dog {
     public void Rule_584_AllVariablesUsed_invalid3()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query queryWithUsedVar($atOtherHomes: Boolean) {
                   dog {
@@ -710,7 +399,7 @@ query queryWithExtraVar($atOtherHomes: Boolean, $extra: Int) {
                 fragment isHousetrainedFragment on Dog {
                   isHousetrained(atOtherHomes: $atOtherHomes)
                 }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -729,7 +418,7 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_584_AllVariablesUsed_valid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query variableUsedInFragment($atOtherHomes: Boolean) {
                   dog {
@@ -740,7 +429,7 @@ query variableUsedInFragment($atOtherHomes: Boolean) {
                 fragment isHousetrainedFragment on Dog {
                   isHousetrained(atOtherHomes: $atOtherHomes)
                 }
-                 ");
+                 ";
 
         /* When */
         var result = Validate(
@@ -755,14 +444,14 @@ fragment isHousetrainedFragment on Dog {
     public void Rule_585_AllVariableUsagesAreAllowed_invalid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query intCannotGoIntoBoolean($intArg: Int) {
                   arguments {
                     booleanArgField(booleanArg: $intArg)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -780,14 +469,14 @@ query intCannotGoIntoBoolean($intArg: Int) {
     public void Rule_585_AllVariableUsagesAreAllowed_invalid2()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query booleanListCannotGoIntoBoolean($booleanListArg: [Boolean]) {
                   arguments {
                     booleanArgField(booleanArg: $booleanListArg)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -805,14 +494,14 @@ query booleanListCannotGoIntoBoolean($booleanListArg: [Boolean]) {
     public void Rule_585_AllVariableUsagesAreAllowed_invalid3()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query booleanArgQuery($booleanArg: Boolean) {
                   arguments {
                     nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -830,14 +519,14 @@ query booleanArgQuery($booleanArg: Boolean) {
     public void Rule_585_AllVariableUsagesAreAllowed_valid1()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query nonNullListToList($nonNullBooleanList: [Boolean]!) {
                   arguments {
                     booleanListArgField(booleanListArg: $nonNullBooleanList)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -852,14 +541,14 @@ query nonNullListToList($nonNullBooleanList: [Boolean]!) {
     public void Rule_585_AllVariableUsagesAreAllowed_invalid4()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query listToNonNullList($booleanList: [Boolean]) {
                   arguments {
                     nonNullBooleanListField(nonNullBooleanListArg: $booleanList)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -877,14 +566,14 @@ query listToNonNullList($booleanList: [Boolean]) {
     public void Rule_585_AllVariableUsagesAreAllowed_valid2()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query booleanArgQueryWithDefault($booleanArg: Boolean) {
                   arguments {
                     optionalNonNullBooleanArgField(optionalBooleanArg: $booleanArg)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
@@ -899,14 +588,14 @@ query booleanArgQueryWithDefault($booleanArg: Boolean) {
     public void Rule_585_AllVariableUsagesAreAllowed_valid3()
     {
         /* Given */
-        var document = Parser.ParseDocument(
+        var document =
             @"
                 query booleanArgQueryWithDefault($booleanArg: Boolean = true) {
                   arguments {
                     nonNullBooleanArgField(nonNullBooleanArg: $booleanArg)
                   }
                 }
-                ");
+                ";
 
         /* When */
         var result = Validate(
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index 13c288035..02b073ab8 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -38,7 +38,10 @@
     <Compile Include="Bug\Bug_339.cs" />
     <Compile Include="Validation\ValidatorFacts.Arguments.cs" />
     <Compile Include="Validation\ValidatorFacts.cs" />
+    <Compile Include="Validation\ValidatorFacts.Directives.cs" />
+    <Compile Include="Validation\ValidatorFacts.Fields.cs" />
     <Compile Include="Validation\ValidatorFacts.Fragments.cs" />
+    <Compile Include="Validation\ValidatorFacts.Variables.cs" />
     <Compile Include="Validation\ValidatorFacts.ValidatorFacts.Selections.cs" />
   </ItemGroup>
 

From 8b935f87416a61c683282e3530fca0ae1d6b0b55 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Sat, 12 Feb 2022 09:26:38 +0200
Subject: [PATCH 07/26] Extension imports

---
 src/graphql/TypeSystem/SchemaBuildOptions.cs  |  4 +-
 .../Extensions/CostAnalysisImportFacts.cs     | 38 +++++++++----------
 tests/graphql.tests/graphql.tests.csproj      |  3 --
 3 files changed, 21 insertions(+), 24 deletions(-)

diff --git a/src/graphql/TypeSystem/SchemaBuildOptions.cs b/src/graphql/TypeSystem/SchemaBuildOptions.cs
index 85be3f64c..b91a4e51a 100644
--- a/src/graphql/TypeSystem/SchemaBuildOptions.cs
+++ b/src/graphql/TypeSystem/SchemaBuildOptions.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using Tanka.GraphQL.Directives;
+using Tanka.GraphQL.Extensions;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.ImportProviders;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
@@ -36,6 +37,7 @@ public class SchemaBuildOptions
     public IReadOnlyList<IImportProvider> ImportProviders { get; set; } = new List<IImportProvider>()
     {
         new EmbeddedResourceImportProvider(),
-        new FileSystemImportProvider(AppContext.BaseDirectory)
+        new FileSystemImportProvider(AppContext.BaseDirectory),
+        new ExtensionsImportProvider()
     };
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Extensions/CostAnalysisImportFacts.cs b/tests/graphql.tests/Extensions/CostAnalysisImportFacts.cs
index 23661e500..3d0071bbc 100644
--- a/tests/graphql.tests/Extensions/CostAnalysisImportFacts.cs
+++ b/tests/graphql.tests/Extensions/CostAnalysisImportFacts.cs
@@ -1,19 +1,18 @@
 using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Extensions
+namespace Tanka.GraphQL.Tests.Extensions;
+
+public class CostAnalysisImportFacts
 {
-    public class CostAnalysisImportFacts
+    [Fact]
+    public async Task Parse_Sdl()
     {
-        [Fact]
-        public async Task Parse_Sdl()
-        {
-            /* Given */
-            var sdl =
-                  @"
+        /* Given */
+        var sdl =
+            @"
                     """"""
                     tanka_import from ""tanka://cost-analysis""
                     """"""
@@ -27,17 +26,16 @@ type Query {
                     }
                  ";
 
-            /* When */
-            var builder = await new SchemaBuilder()
-                // BuiltIn import providers are used
-                .SdlAsync(sdl);
+        /* When */
+        var schema = await new SchemaBuilder()
+            .Add(sdl)
+            // BuiltIn import providers are used
+            .Build(new SchemaBuildOptions());
 
-            var schema = builder.Build();
 
-            /* Then */
-            var objectType = schema.GetNamedType<ObjectType>("ObjectType");
-            var property = schema.GetField(objectType.Name, "property");
-            Assert.Single(property.Directives, directive => directive.Name == "cost");
-        }
+        /* Then */
+        var objectType = schema.GetRequiredNamedType<ObjectDefinition>("ObjectType");
+        var property = schema.GetField(objectType.Name, "property");
+        Assert.Single(property.Directives, directive => directive.Name == "cost");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index 02b073ab8..a6e02065b 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -10,19 +10,16 @@
   <ItemGroup>
     <Compile Remove="Bug\**" />
     <Compile Remove="Descriptions\**" />
-    <Compile Remove="Extensions\**" />
     <Compile Remove="Tools\**" />
     <Compile Remove="TypeSystem\**" />
     <Compile Remove="Validation\**" />
     <EmbeddedResource Remove="Bug\**" />
     <EmbeddedResource Remove="Descriptions\**" />
-    <EmbeddedResource Remove="Extensions\**" />
     <EmbeddedResource Remove="Tools\**" />
     <EmbeddedResource Remove="TypeSystem\**" />
     <EmbeddedResource Remove="Validation\**" />
     <None Remove="Bug\**" />
     <None Remove="Descriptions\**" />
-    <None Remove="Extensions\**" />
     <None Remove="Tools\**" />
     <None Remove="TypeSystem\**" />
     <None Remove="Validation\**" />

From 66a9115d4fb4f62198802e77c866e97d5215c707 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Sun, 13 Feb 2022 14:17:09 +0200
Subject: [PATCH 08/26] Introspection and all core tests

---
 .../Nodes/TypeSystem/TypeSystemDocument.cs    |   6 +-
 src/graphql.language/Parser.cs                |   5 +-
 src/graphql/Execution/Values.cs               |   6 +-
 src/graphql/FieldResolversMap.cs              |  24 +-
 src/graphql/IResolverMap.cs                   |  24 +-
 src/graphql/ISubscriberMap.cs                 |   5 +-
 src/graphql/Introspection/Introspect.cs       |  20 +-
 .../Introspection/IntrospectionResolvers.cs   | 373 ++++---
 .../Introspection/IntrospectionSchema.cs      |  19 +-
 src/graphql/ResolversMap.cs                   |  98 +-
 src/graphql/TypeSystem/SchemaBuildOptions.cs  |   2 +
 src/graphql/TypeSystem/SchemaBuilder.cs       | 160 +--
 src/graphql/TypeSystem/SchemaExtensions.cs    |  40 +
 .../FieldSelectionMergingValidator.cs         |   3 +
 src/graphql/Validation/TypeTracker.cs         |  11 +-
 .../ValueResolution/IResolverContext.cs       |   3 +
 src/graphql/ValueResolution/Resolve.cs        |  13 +
 tanka-graphql.sln.DotSettings                 |   1 +
 .../graphql.tests.data.csproj                 |   6 -
 .../starwars/StarwarsFixture.cs               |  27 +-
 .../starwars/StarwarsResolvers.cs             | 135 ++-
 .../starwars/StarwarsSchema.cs                | 107 +-
 tests/graphql.tests/Bug/Bug_339.cs            |   3 +-
 .../Introspection/IntrospectSchemaFacts.cs    |  18 +-
 tests/graphql.tests/StarwarsFacts.cs          | 937 +++++-------------
 tests/graphql.tests/SubscriptionsFacts.cs     | 209 ++--
 tests/graphql.tests/graphql.tests.csproj      |  37 +-
 27 files changed, 981 insertions(+), 1311 deletions(-)

diff --git a/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs b/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
index 304c235b0..9bb427dbc 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
@@ -10,9 +10,9 @@ public TypeSystemDocument(
             IReadOnlyList<SchemaDefinition>? schemaDefinitions,
             IReadOnlyList<TypeDefinition>? typeDefinitions,
             IReadOnlyList<DirectiveDefinition>? directiveDefinitions,
-            IReadOnlyList<SchemaExtension>? schemaExtensions,
-            IReadOnlyList<TypeExtension>? typeExtensions,
-            IReadOnlyList<Import>? imports = null)
+            IReadOnlyList<SchemaExtension>? schemaExtensions = default,
+            IReadOnlyList<TypeExtension>? typeExtensions = default,
+            IReadOnlyList<Import>? imports = default)
         {
             SchemaDefinitions = schemaDefinitions;
             TypeDefinitions = typeDefinitions;
diff --git a/src/graphql.language/Parser.cs b/src/graphql.language/Parser.cs
index aea49eb9a..cc4bbb2e4 100644
--- a/src/graphql.language/Parser.cs
+++ b/src/graphql.language/Parser.cs
@@ -637,6 +637,7 @@ public NamedType ParseTypeCondition()
             return ParseName();
         }
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Name ParseName()
         {
             var location = Ensure(TokenKind.Name);
@@ -647,7 +648,7 @@ public Name ParseName()
             return new Name(value, location);
         }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private Location Ensure(TokenKind kind)
         {
             SkipComment();
@@ -660,7 +661,7 @@ private Location Ensure(TokenKind kind)
             return GetLocation();
         }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private Location GetLocation()
         {
             return new Location(_lexer.Line, _lexer.Column);
diff --git a/src/graphql/Execution/Values.cs b/src/graphql/Execution/Values.cs
index 52eab98ac..bcd27691f 100644
--- a/src/graphql/Execution/Values.cs
+++ b/src/graphql/Execution/Values.cs
@@ -111,13 +111,13 @@ public static class Values
         private static object CoerceNonNullTypeValue(
             ISchema schema,
             object? value,
-            NonNullType NonNullType)
+            NonNullType nonNullType)
         {
-            var coercedValue = CoerceValue(schema, value, NonNullType.OfType);
+            var coercedValue = CoerceValue(schema, value, nonNullType.OfType);
             if (coercedValue == null)
                 throw new ValueCoercionException("Coerced value is null",
                     value,
-                    NonNullType);
+                    nonNullType);
 
             return coercedValue;
         }
diff --git a/src/graphql/FieldResolversMap.cs b/src/graphql/FieldResolversMap.cs
index f9534d692..6d6954123 100644
--- a/src/graphql/FieldResolversMap.cs
+++ b/src/graphql/FieldResolversMap.cs
@@ -28,11 +28,31 @@ IEnumerator<Subscriber> IEnumerable<Subscriber>.GetEnumerator()
             return _subscribers.Values.GetEnumerator();
         }
 
+        public IEnumerable<string> GetFields()
+        {
+            foreach (var (field, _) in _resolvers)
+            {
+                yield return field;
+            }
+
+            foreach (var (field, _) in _subscribers)
+            {   if (_resolvers.ContainsKey(field))
+                    continue;
+
+                yield return field;
+            }
+        }
+
         public void Add(string key, Resolver resolver)
         {
             _resolvers.Add(key, resolver);
         }
 
+        public void Add(string key, Subscriber subscriber)
+        {
+            _subscribers.Add(key, subscriber);
+        }
+
         public void Add(string key, Subscriber subscriber, Resolver resolver)
         {
             if (key == null) throw new ArgumentNullException(nameof(key));
@@ -43,7 +63,7 @@ public void Add(string key, Subscriber subscriber, Resolver resolver)
             _resolvers.Add(key, resolver);
         }
 
-        public Resolver GetResolver(string key)
+        public Resolver? GetResolver(string key)
         {
             if (!_resolvers.ContainsKey(key))
                 return null;
@@ -51,7 +71,7 @@ public Resolver GetResolver(string key)
             return _resolvers[key];
         }
 
-        public Subscriber GetSubscriber(string key)
+        public Subscriber? GetSubscriber(string key)
         {
             if (!_subscribers.ContainsKey(key))
                 return null;
diff --git a/src/graphql/IResolverMap.cs b/src/graphql/IResolverMap.cs
index 1b90e70d5..368f1204c 100644
--- a/src/graphql/IResolverMap.cs
+++ b/src/graphql/IResolverMap.cs
@@ -1,18 +1,20 @@
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public interface IResolverMap
 {
-    public interface IResolverMap
-    {
-        Resolver? GetResolver(string typeName, string fieldName);
-    }
+    Resolver? GetResolver(string typeName, string fieldName);
 
-    public static class ResolverMapExtensions
+    IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes();
+}
+
+public static class ResolverMapExtensions
+{
+    public static Resolver? GetResolver(this IResolverMap map, ObjectDefinition type, FieldDefinition field)
     {
-        public static Resolver? GetResolver(this IResolverMap map, ObjectDefinition type, FieldDefinition field)
-        {
-            return map.GetResolver(type.Name, field.Name);
-        }
+        return map.GetResolver(type.Name, field.Name);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ISubscriberMap.cs b/src/graphql/ISubscriberMap.cs
index 5cea4a1e1..9b7e57f7b 100644
--- a/src/graphql/ISubscriberMap.cs
+++ b/src/graphql/ISubscriberMap.cs
@@ -1,4 +1,5 @@
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL
@@ -6,6 +7,8 @@ namespace Tanka.GraphQL
     public interface ISubscriberMap
     {
         Subscriber? GetSubscriber(string typeName, string fieldName);
+
+        IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes();
     }
 
     public static class SubscriberMapExtensions
diff --git a/src/graphql/Introspection/Introspect.cs b/src/graphql/Introspection/Introspect.cs
index 33476a4f8..1e645a4ea 100644
--- a/src/graphql/Introspection/Introspect.cs
+++ b/src/graphql/Introspection/Introspect.cs
@@ -1,4 +1,6 @@
-using System.Threading.Tasks;
+using System;
+using System.Threading.Tasks;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.Introspection
@@ -95,20 +97,12 @@ fragment TypeRef on __Type {
               }
             }";
 
-        /// <summary>
-        ///     Return introspection schema for given schema
-        /// </summary>
-        /// <param name="schema"></param>
-        /// <returns></returns>
-        public static Task<ISchema> Schema(ISchema schema)
+        public static (TypeSystemDocument TypeSystemDocument, ResolversMap Resolvers) Create()
         {
-            var builder = IntrospectionSchema.Create();
-            var introspectionResolvers = new IntrospectionResolvers(schema);
+            var typeSystem = IntrospectionSchema.GetTypeSystem();
+            var introspectionResolvers = new IntrospectionResolvers();
 
-            return builder.Build(new SchemaBuildOptions()
-            {
-                Resolvers = introspectionResolvers
-            });
+            return (typeSystem, introspectionResolvers);
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/IntrospectionResolvers.cs b/src/graphql/Introspection/IntrospectionResolvers.cs
index 63e4654f4..a8f3eb632 100644
--- a/src/graphql/Introspection/IntrospectionResolvers.cs
+++ b/src/graphql/Introspection/IntrospectionResolvers.cs
@@ -4,209 +4,262 @@
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+public class IntrospectionResolvers : ResolversMap
 {
-    public class IntrospectionResolvers : ResolversMap
+    public IntrospectionResolvers(string queryTypeName = "Query")
     {
-        public IntrospectionResolvers(ISchema source)
+        this[queryTypeName] = new FieldResolversMap
         {
-            this[source.Query.Name] = new FieldResolversMap
+            { "__schema", context => ResolveSync.As(context.Schema) },
             {
-                {"__schema", context => ResolveSync.As(source)},
-                {
-                    "__type", context => ResolveSync.As(source.GetNamedType(context.GetArgument<string>("name")))
-                }
-            };
+                "__type", context => ResolveSync.As(context.Schema.GetNamedType(context.GetArgument<string>("name")))
+            }
+        };
 
-            this[IntrospectionSchema.SchemaName] = new FieldResolversMap
-            {
-                {"types", context => ResolveSync.As(source.QueryTypes<TypeDefinition>().OrderBy(t => t.Name.Value))},
-                {"queryType", context => ResolveSync.As(source.Query)},
-                {"mutationType", context => ResolveSync.As(source.Mutation)},
-                {"subscriptionType", context => ResolveSync.As(source.Subscription)},
-                {"directives", context => ResolveSync.As(source.QueryDirectiveTypes().OrderBy(t => t.Name.Value))}
-            };
-
-            this[IntrospectionSchema.TypeName] = new FieldResolversMap
+        this[IntrospectionSchema.SchemaName] = new FieldResolversMap
+        {
             {
-                {"kind", Resolve.PropertyOf<INode>(t => KindOf(source, t))},
-                {"name", Resolve.PropertyOf<INode>(t => NameOf(source, t))},
-                {"description", Resolve.PropertyOf<INode>(t => Describe(t))},
+                "types", context => ResolveSync.As(context.Schema
+                    .QueryTypes<TypeDefinition>(IsNotBuiltIn)
+                    .OrderBy(t => t.Name.Value))
+            },
+            { "queryType", context => ResolveSync.As(context.Schema.Query) },
+            { "mutationType", context => ResolveSync.As(context.Schema.Mutation) },
+            { "subscriptionType", context => ResolveSync.As(context.Schema.Subscription) },
+            { "directives", context => ResolveSync.As(context.Schema.QueryDirectiveTypes().OrderBy(t => t.Name.Value)) }
+        };
 
-                // OBJECT and INTERFACE only
+        this[IntrospectionSchema.TypeName] = new FieldResolversMap
+        {
+            { "kind", Resolve.PropertyOf<INode>((t, context) => KindOf(context.Schema, t)) },
+            { "name", Resolve.PropertyOf<INode>((t, context) => NameOf(context.Schema, t)) },
+            { "description", Resolve.PropertyOf<INode>(Describe) },
+
+            // OBJECT and INTERFACE only
+            {
+                "fields", context =>
                 {
-                    "fields", context =>
+                    var fields = context.ObjectValue switch
                     {
-                        var fields = context.ObjectValue switch
-                        {
-                            null => null,
-                            ObjectDefinition objectDefinition => source.GetFields(objectDefinition.Name),
-                            InterfaceDefinition interfaceDefinition => source.GetFields(interfaceDefinition.Name),
-                            _ => null
-                        };
-
-                        if (fields is null)
-                            return ResolveSync.As(null);
-
-                        var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
-                        if (!includeDeprecated) 
-                            fields = fields.Where(f => !f.Value.TryGetDirective("deprecated", out _));
-
-                        return ResolveSync.As(fields.OrderBy(t => t.Key).ToList());
-                    }
-                },
+                        null => null,
+                        ObjectDefinition objectDefinition => context.Schema.GetFields(objectDefinition.Name),
+                        InterfaceDefinition interfaceDefinition => context.Schema.GetFields(interfaceDefinition.Name),
+                        _ => null
+                    };
+
+                    if (fields is null)
+                        return ResolveSync.As(null);
+
+                    var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
+                    if (!includeDeprecated)
+                        fields = fields.Where(f => !f.Value.TryGetDirective("deprecated", out _));
+
+                    return ResolveSync.As(fields.OrderBy(t => t.Key).ToList());
+                }
+            },
 
-                // OBJECT only
-                {"interfaces", Resolve.PropertyOf<ObjectDefinition>(t => t.Interfaces?.OrderBy(t => t.Name.Value))},
+            // OBJECT only
+            { "interfaces", Resolve.PropertyOf<ObjectDefinition>(t => t.Interfaces?.OrderBy(t => t.Name.Value)) },
 
 
-                // INTERFACE and UNION only
+            // INTERFACE and UNION only
+            {
+                "possibleTypes", context =>
                 {
-                    "possibleTypes", context =>
+                    var possibleTypes = context.ObjectValue switch
                     {
-                        var possibleTypes = context.ObjectValue switch
-                        {
-                            null => null,
-                            InterfaceDefinition interfaceDefinition => source.GetPossibleTypes(interfaceDefinition),
-                            UnionDefinition unionDefinition => source.GetPossibleTypes(unionDefinition),
-                            _ => null
-                        };
-
-                        return ResolveSync.As(possibleTypes?.OrderBy(t => t.Name.Value));
-                    }
-                },
+                        null => null,
+                        InterfaceDefinition interfaceDefinition => context.Schema.GetPossibleTypes(interfaceDefinition),
+                        UnionDefinition unionDefinition => context.Schema.GetPossibleTypes(unionDefinition),
+                        _ => null
+                    };
 
-                // ENUM only
+                    return ResolveSync.As(possibleTypes?.OrderBy(t => t.Name.Value));
+                }
+            },
+
+            // ENUM only
+            {
+                "enumValues", context =>
                 {
-                    "enumValues", context =>
-                    {
-                        var en = context.ObjectValue as EnumDefinition;
+                    var en = context.ObjectValue as EnumDefinition;
 
-                        if (en == null)
-                            return ResolveSync.As(null);
+                    if (en == null)
+                        return ResolveSync.As(null);
 
-                        var includeDeprecated = (bool?)context.GetArgument<bool?>("includeDeprecated") ?? false;
+                    var includeDeprecated = context.GetArgument<bool?>("includeDeprecated") ?? false;
 
-                        var values = en.Values?.ToList();
+                    var values = en.Values?.ToList();
 
-                        if (!includeDeprecated) 
-                            values = values?.Where(f => !f.TryGetDirective("deprecated", out _)).ToList();
+                    if (!includeDeprecated)
+                        values = values?.Where(f => !f.TryGetDirective("deprecated", out _)).ToList();
 
-                        return ResolveSync.As(values?.OrderBy(t => t.Value.Name.Value));
-                    }
-                },
+                    return ResolveSync.As(values?.OrderBy(t => t.Value.Name.Value));
+                }
+            },
 
-                // INPUT_OBJECT only
-                {
-                    "inputFields", Resolve.PropertyOf<InputObjectDefinition>(t => source.GetInputFields(t.Name)
-                        .Select(iof => iof.Value).OrderBy(t => t.Name.Value).ToList())
-                },
+            // INPUT_OBJECT only
+            {
+                "inputFields", Resolve.PropertyOf<InputObjectDefinition>((t, context) => context.Schema
+                    .GetInputFields(t.Name)
+                    .Select(iof => iof.Value).OrderBy(t => t.Name.Value).ToList())
+            },
 
-                // NON_NULL and LIST only
-                {"ofType", Resolve.PropertyOf<TypeBase>(t => t switch
+            // NON_NULL and LIST only
+            {
+                "ofType", Resolve.PropertyOf<TypeBase>(t => t switch
                 {
                     null => null,
                     NonNullType nonNullType => nonNullType.OfType,
                     ListType list => list.OfType,
                     _ => null
-                })}
-            };
+                })
+            }
+        };
 
-            this[IntrospectionSchema.FieldName] = new FieldResolversMap
+        this[IntrospectionSchema.FieldName] = new FieldResolversMap
+        {
+            { "name", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Key) },
+            { "description", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Description) },
             {
-                {"name", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Key)},
-                {"description", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Description)},
-                {"args", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Arguments ?? ArgumentsDefinition.None)},
-                {"type", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Type)},
-                {"isDeprecated", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out _))},
-                {"deprecationReason", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out var reason) ? reason: null)}
-            };
-
-            this[IntrospectionSchema.InputValueName] = new FieldResolversMap
+                "args",
+                Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f =>
+                    f.Value.Arguments ?? ArgumentsDefinition.None)
+            },
+            { "type", Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.Type) },
             {
-                {"name", Resolve.PropertyOf<InputValueDefinition>(f => f.Name.Value)},
-                {"description", Resolve.PropertyOf<InputValueDefinition>(f => f.Description)},
-                {"type", Resolve.PropertyOf<InputValueDefinition>(f => f.Type)},
-                {"defaultValue", Resolve.PropertyOf<InputValueDefinition>(f => Execution.Values.CoerceValue(source, f.DefaultValue?.Value, f.Type))}
-            };
-
-            this[IntrospectionSchema.EnumValueName] = new FieldResolversMap
+                "isDeprecated",
+                Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f => f.Value.IsDeprecated(out _))
+            },
             {
-                {"name", Resolve.PropertyOf<EnumValueDefinition>(f => f.Value.Name)},
-                {"description", Resolve.PropertyOf<EnumValueDefinition>(f => f.Description)},
-                {"isDeprecated", Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out _))},
-                {
-                    "deprecationReason", Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out var reason) ? reason : null)
-                }
-            };
+                "deprecationReason",
+                Resolve.PropertyOf<KeyValuePair<string, FieldDefinition>>(f =>
+                    f.Value.IsDeprecated(out var reason) ? reason : null)
+            }
+        };
 
-            this["__Directive"] = new FieldResolversMap
+        this[IntrospectionSchema.InputValueName] = new FieldResolversMap
+        {
+            { "name", Resolve.PropertyOf<InputValueDefinition>(f => f.Name.Value) },
+            { "description", Resolve.PropertyOf<InputValueDefinition>(f => f.Description) },
+            { "type", Resolve.PropertyOf<InputValueDefinition>(f => f.Type) },
             {
-                {"name", Resolve.PropertyOf<DirectiveDefinition>(d => d.Name)},
-                {"description", Resolve.PropertyOf<DirectiveDefinition>(d => d.Description)},
-                {"locations", Resolve.PropertyOf<DirectiveDefinition>(d => LocationsOf(d.DirectiveLocations))},
-                {"args", Resolve.PropertyOf<DirectiveDefinition>(d =>
+                "defaultValue", Resolve.PropertyOf<InputValueDefinition>((f, context) =>
                 {
-                    return d.Arguments?.OrderBy(t => t.Name.Value);
-                })}
-            };
-        }
+                    try
+                    {
+                        return Execution.Values.CoerceValue(context.Schema, f.DefaultValue?.Value, f.Type);
+                    }
+                    catch
+                    {
+                        return null;
+                    }
+                })
+            }
+        };
 
-        private string? NameOf(ISchema source, INode? type)
+        this[IntrospectionSchema.EnumValueName] = new FieldResolversMap
         {
-            return type switch
+            { "name", Resolve.PropertyOf<EnumValueDefinition>(f => f.Value.Name) },
+            { "description", Resolve.PropertyOf<EnumValueDefinition>(f => f.Description) },
+            { "isDeprecated", Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out _)) },
             {
-                null => null,
-                NamedType namedType => namedType.Name.Value,
-                TypeDefinition typeDefinition => typeDefinition.Name.Value,
-                _ => null
-            };
-        }
-
-        private string? Describe(INode node)
+                "deprecationReason",
+                Resolve.PropertyOf<EnumValueDefinition>(f => f.IsDeprecated(out var reason) ? reason : null)
+            }
+        };
+
+        this["__Directive"] = new FieldResolversMap
         {
-            return node switch
+            { "name", Resolve.PropertyOf<DirectiveDefinition>(d => d.Name) },
+            { "description", Resolve.PropertyOf<DirectiveDefinition>(d => d.Description) },
+            { "locations", Resolve.PropertyOf<DirectiveDefinition>(d => LocationsOf(d.DirectiveLocations)) },
             {
-                null => null,
-                ObjectDefinition objectDefinition => objectDefinition.Description,
-                InterfaceDefinition interfaceDefinition => interfaceDefinition.Description,
-                FieldDefinition fieldDefinition => fieldDefinition.Description,
-                DirectiveDefinition directiveDefinition => directiveDefinition.Description,
-                ScalarDefinition scalarDefinition => scalarDefinition.Description,
-                UnionDefinition unionDefinition => unionDefinition.Description,
-                EnumDefinition enumDefinition => enumDefinition.Description,
-                InputObjectDefinition inputObjectDefinition => inputObjectDefinition.Description,
-                InputValueDefinition inputValueDefinition => inputValueDefinition.Description,
-                EnumValueDefinition enumValueDefinition => enumValueDefinition.Description
-            };
-        }
-
-        public static __TypeKind KindOf(ISchema source, INode type)
+                "args",
+                Resolve.PropertyOf<DirectiveDefinition>(d => { return d.Arguments?.OrderBy(t => t.Name.Value); })
+            }
+        };
+    }
+
+    private IReadOnlyList<string> BuiltInTypes => new List<string>
+    {
+        Scalars.Boolean.Name,
+        Scalars.Float.Name,
+        Scalars.ID.Name,
+        Scalars.Int.Name,
+        Scalars.String.Name,
+        "__Directive",
+        "__EnumValue",
+        "__Field",
+        "__InputValue",
+        "__Schema",
+        "__Type",
+        "__TypeKind",
+        "__DirectiveLocation"
+    };
+
+    public static __TypeKind KindOf(ISchema schema, INode type)
+    {
+        return type switch
         {
-            return type switch
-            {
-                NamedType namedType => KindOf(source, source.GetRequiredNamedType<TypeDefinition>(namedType.Name)),
-                ObjectDefinition _ => __TypeKind.OBJECT,
-                ScalarDefinition _ => __TypeKind.SCALAR,
-                EnumDefinition _ => __TypeKind.ENUM,
-                InputObjectDefinition _ => __TypeKind.INPUT_OBJECT,
-                InterfaceDefinition _ => __TypeKind.INTERFACE,
-                ListType _ => __TypeKind.LIST,
-                NonNullType _ => __TypeKind.NON_NULL,
-                UnionDefinition _ => __TypeKind.UNION,
-                _ => throw new InvalidOperationException($"Cannot get kind from {type}")
-            };
-        }
-
-        private IEnumerable<__DirectiveLocation> LocationsOf(IEnumerable<string> locations)
+            NamedType namedType => KindOf(schema, schema.GetRequiredNamedType<TypeDefinition>(namedType.Name)),
+            ObjectDefinition _ => __TypeKind.OBJECT,
+            ScalarDefinition _ => __TypeKind.SCALAR,
+            EnumDefinition _ => __TypeKind.ENUM,
+            InputObjectDefinition _ => __TypeKind.INPUT_OBJECT,
+            InterfaceDefinition _ => __TypeKind.INTERFACE,
+            ListType _ => __TypeKind.LIST,
+            NonNullType _ => __TypeKind.NON_NULL,
+            UnionDefinition _ => __TypeKind.UNION,
+            _ => throw new InvalidOperationException($"Cannot get kind from {type}")
+        };
+    }
+
+    private bool IsNotBuiltIn(TypeDefinition maybeBuiltIn)
+    {
+        return !BuiltInTypes.Contains(maybeBuiltIn.Name.Value);
+    }
+
+
+    private string? NameOf(ISchema context, INode? type)
+    {
+        return type switch
         {
-            return locations
-                .Select(l => (__DirectiveLocation) Enum.Parse(
-                    typeof(__DirectiveLocation),
-                    l.ToString())).ToList();
-        }
+            null => null,
+            NamedType namedType => namedType.Name.Value,
+            TypeDefinition typeDefinition => typeDefinition.Name.Value,
+            _ => null
+        };
+    }
+
+    private string? Describe(INode node)
+    {
+        return node switch
+        {
+            null => null,
+            ObjectDefinition objectDefinition => objectDefinition.Description,
+            InterfaceDefinition interfaceDefinition => interfaceDefinition.Description,
+            FieldDefinition fieldDefinition => fieldDefinition.Description,
+            DirectiveDefinition directiveDefinition => directiveDefinition.Description,
+            ScalarDefinition scalarDefinition => scalarDefinition.Description,
+            UnionDefinition unionDefinition => unionDefinition.Description,
+            EnumDefinition enumDefinition => enumDefinition.Description,
+            InputObjectDefinition inputObjectDefinition => inputObjectDefinition.Description,
+            InputValueDefinition inputValueDefinition => inputValueDefinition.Description,
+            EnumValueDefinition enumValueDefinition => enumValueDefinition.Description
+        };
+    }
+
+    private IEnumerable<__DirectiveLocation> LocationsOf(IEnumerable<string> locations)
+    {
+        return locations
+            .Select(l => (__DirectiveLocation)Enum.Parse(
+                typeof(__DirectiveLocation),
+                l.ToString())).ToList();
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/IntrospectionSchema.cs b/src/graphql/Introspection/IntrospectionSchema.cs
index a6f66c99e..2a80b109e 100644
--- a/src/graphql/Introspection/IntrospectionSchema.cs
+++ b/src/graphql/Introspection/IntrospectionSchema.cs
@@ -11,13 +11,9 @@ public class IntrospectionSchema
     public const string TypeKindName = "__TypeKind";
     public const string TypeName = "__Type";
 
-    public static SchemaBuilder Create()
+    public static TypeSystemDocument GetTypeSystem()
     {
-        var builder = new SchemaBuilder();
-
-        builder.Add(
-            (TypeSystemDocument)
-@"
+        return @"
 type __Schema {
   description: String
   types: [__Type!]!
@@ -111,11 +107,18 @@ enum __DirectiveLocation {
   INPUT_FIELD_DEFINITION
 }
 
-type Query {
+extend type Query {
     __type(name: String!): __Type
     __schema: __Schema
 }
-");
+";
+    }
+
+    public static SchemaBuilder Create()
+    {
+        var builder = new SchemaBuilder();
+
+        builder.Add(GetTypeSystem());
 
         return builder;
     }
diff --git a/src/graphql/ResolversMap.cs b/src/graphql/ResolversMap.cs
index bece935c3..87316faa4 100644
--- a/src/graphql/ResolversMap.cs
+++ b/src/graphql/ResolversMap.cs
@@ -1,10 +1,57 @@
 using System.Collections.Generic;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL
 {
     public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap, ISubscriberMap
     {
+        public ResolversMap(IResolverMap resolvers, ISubscriberMap? subscribers = null)
+        {
+            Add(resolvers, subscribers);
+        }
+
+        public void Add(IResolverMap resolvers, ISubscriberMap? subscribers)
+        {
+            foreach (var (typeName, fields) in resolvers.GetTypes())
+            {
+                foreach (var field in fields)
+                {
+                    var resolver = resolvers?.GetResolver(typeName, field);
+                    var subscriber = subscribers?.GetSubscriber(typeName, field);
+
+                    if (resolver is not null)
+                    {
+                        Add(typeName, field, resolver, subscriber);
+                    }
+                }
+            }
+
+            if (subscribers is not null)
+            {
+                foreach (var (typeName, fields) in subscribers.GetTypes())
+                {
+                    foreach (var field in fields)
+                    {
+                        var resolver = resolvers?.GetResolver(typeName, field);
+                        var subscriber = subscribers?.GetSubscriber(typeName, field);
+
+                        if (subscriber is not null)
+                        {
+                            Add(typeName, field, subscriber);
+                        }
+                    }
+                }
+            }
+        }
+
+        public ResolversMap()
+        {
+
+        }
+
+        public static IResolverMap None { get; } = new ResolversMap();
+
         public Resolver? GetResolver(string typeName, string fieldName)
         {
             if (!TryGetValue(typeName, out var objectNode))
@@ -14,6 +61,14 @@ public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap,
             return resolver;
         }
 
+        public IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes()
+        {
+            foreach (var (typeName, fields) in this)
+            {
+                yield return (typeName, fields.GetFields());
+            }
+        }
+
         public Subscriber? GetSubscriber(string typeName, string fieldName)
         {
             if (!TryGetValue(typeName, out var objectNode))
@@ -23,11 +78,41 @@ public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap,
             return resolver;
         }
 
+        public void Add(string typeName, string fieldName, Resolver resolver, Subscriber? subscriber = null)
+        {
+            if (!TryGetValue(typeName, out var fieldsResolvers))
+            {
+                fieldsResolvers = this[typeName] = new FieldResolversMap();
+            }
+
+            if (subscriber is null)
+                fieldsResolvers.Add(fieldName, resolver);
+            else
+            {
+                fieldsResolvers.Add(fieldName, subscriber, resolver);
+            }
+        }
+
+        public bool Add(string typeName, string fieldName, Subscriber subscriber)
+        {
+            if (!TryGetValue(typeName, out var fieldsResolvers))
+            {
+                fieldsResolvers = this[typeName] = new FieldResolversMap();
+            }
+
+            if (fieldsResolvers.GetSubscriber(fieldName) is not null)
+                return false;
+
+            fieldsResolvers.Add(fieldName, subscriber);
+            return true;
+        }
+
         public ResolversMap Clone()
         {
             var result = new ResolversMap();
 
-            foreach (var objectMap in this) result.Add(objectMap.Key, objectMap.Value.Clone());
+            foreach (var objectMap in this) 
+                result.Add(objectMap.Key, objectMap.Value.Clone());
 
             return result;
         }
@@ -36,20 +121,19 @@ public ResolversMap Clone()
         {
             var result = a.Clone();
 
-            // override with b
-            foreach (var objectMap in b) result[objectMap.Key] = objectMap.Value;
+            result.Add(b, b);
 
             return result;
         }
 
-        public static ResolversMap operator +(ResolversMap a, (string Name, FieldResolversMap Fields) ObjectDefinition)
+        public static ResolversMap operator +(ResolversMap a, (string Name, FieldResolversMap Fields) objectDefinition)
         {
             var result = a.Clone();
 
-            if (result.ContainsKey(ObjectDefinition.Name))
-                result[ObjectDefinition.Name] += ObjectDefinition.Fields;
+            if (result.ContainsKey(objectDefinition.Name))
+                result[objectDefinition.Name] += objectDefinition.Fields;
             else
-                result[ObjectDefinition.Name] = ObjectDefinition.Fields;
+                result[objectDefinition.Name] = objectDefinition.Fields;
 
             return result;
         }
diff --git a/src/graphql/TypeSystem/SchemaBuildOptions.cs b/src/graphql/TypeSystem/SchemaBuildOptions.cs
index b91a4e51a..779f8f1d4 100644
--- a/src/graphql/TypeSystem/SchemaBuildOptions.cs
+++ b/src/graphql/TypeSystem/SchemaBuildOptions.cs
@@ -40,4 +40,6 @@ public class SchemaBuildOptions
         new FileSystemImportProvider(AppContext.BaseDirectory),
         new ExtensionsImportProvider()
     };
+
+    public bool IncludeIntrospection { get; set; } = true;
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuilder.cs b/src/graphql/TypeSystem/SchemaBuilder.cs
index 98d4c601a..b52f90370 100644
--- a/src/graphql/TypeSystem/SchemaBuilder.cs
+++ b/src/graphql/TypeSystem/SchemaBuilder.cs
@@ -1,12 +1,11 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Directives;
+using Tanka.GraphQL.Introspection;
 using Tanka.GraphQL.Language;
-using Tanka.GraphQL.Language.ImportProviders;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
@@ -21,14 +20,14 @@ public class SchemaBuilder
     private static readonly List<Directive> NoDirectives = new(0);
     private readonly ConcurrentDictionary<string, DirectiveDefinition> _directiveDefinitions = new();
 
+    private readonly ConcurrentBag<Import> _imports = new();
+
     private readonly ConcurrentBag<SchemaDefinition> _schemaDefinitions = new();
     private readonly ConcurrentBag<SchemaExtension> _schemaExtensions = new();
 
     private readonly ConcurrentDictionary<string, TypeDefinition> _typeDefinitions = new();
     private readonly ConcurrentDictionary<string, ConcurrentBag<TypeExtension>> _typeExtensions = new();
 
-    private readonly ConcurrentBag<Import> _imports = new();
-
     public SchemaBuilder()
     {
         Add((TypeSystemDocument)@"
@@ -86,9 +85,7 @@ public SchemaBuilder Add(TypeSystemDocument typeSystem)
     {
         if (typeSystem.Imports is not null)
             foreach (var import in typeSystem.Imports)
-            {
                 Add(import);
-            }
 
         if (typeSystem.SchemaDefinitions is not null)
             foreach (var schemaDefinition in typeSystem.SchemaDefinitions)
@@ -113,14 +110,11 @@ public SchemaBuilder Add(TypeSystemDocument typeSystem)
         return this;
     }
 
-    private SchemaBuilder Add(Import importDefinition)
+    public SchemaBuilder Add(string typeSystemSdl)
     {
-        _imports.Add(importDefinition);
-        return this;
+        return Add((TypeSystemDocument)typeSystemSdl);
     }
 
-    public SchemaBuilder Add(string typeSystemSdl) => Add((TypeSystemDocument)typeSystemSdl);
-
     public SchemaBuilder Add(SchemaDefinition schemaDefinition)
     {
         _schemaDefinitions.Add(schemaDefinition);
@@ -174,24 +168,38 @@ public SchemaBuilder Add(TypeExtension[] typeExtensions)
         return this;
     }
 
-    public Task<ISchema> Build(IResolverMap resolvers, ISubscriberMap? subscribers = null) => Build(
-        new SchemaBuildOptions()
-        {
-            Resolvers = resolvers,
-            Subscribers = subscribers
-        });
-    
+    public Task<ISchema> Build(IResolverMap resolvers, ISubscriberMap? subscribers = null)
+    {
+        return Build(
+            new SchemaBuildOptions
+            {
+                Resolvers = resolvers,
+                Subscribers = subscribers
+            });
+    }
+
     public async Task<ISchema> Build(SchemaBuildOptions options)
     {
+        var resolvers = new ResolversMap(options.Resolvers ?? ResolversMap.None, options.Subscribers);
+
+        if (options.IncludeIntrospection)
+        {
+            var introspection = Introspect.Create();
+            Add(introspection.TypeSystemDocument);
+
+            resolvers += introspection.Resolvers;
+        }
+
         await AddImports(options.ImportProviders);
-        
+
         var typeDefinitions = BuildTypeDefinitions(
             options.BuildTypesFromOrphanedExtensions
         );
 
         typeDefinitions = RunDirectiveVisitors(typeDefinitions, options).ToList();
 
-        var namedTypeDefinitions = typeDefinitions.ToDictionary(type => type.Name.Value, type => type);
+        var namedTypeDefinitions = typeDefinitions
+            .ToDictionary(type => type.Name.Value, type => type);
 
         var schemas = BuildSchemas().ToList();
         var operationDefinitions = schemas
@@ -232,10 +240,7 @@ public async Task<ISchema> Build(SchemaBuildOptions options)
                       NoFields
             );
 
-        foreach (var (type,fields) in interfaceFields)
-        {
-            allFields.Add(type, fields);
-        }
+        foreach (var (type, fields) in interfaceFields) allFields.Add(type, fields);
 
         var inputFields = namedTypeDefinitions
             .Where(kv => kv.Value is InputObjectDefinition)
@@ -250,30 +255,35 @@ public async Task<ISchema> Build(SchemaBuildOptions options)
             ?.SelectMany(schema => schema.Directives?.ToList() ?? NoDirectives)
             .ToList();
 
-
         ISchema schema = new ExecutableSchema(
             namedTypeDefinitions,
             allFields,
             inputFields,
             _directiveDefinitions.ToDictionary(kv => kv.Key, kv => kv.Value),
             queryRoot,
-            options.Resolvers ?? new ResolversMap(),
+            resolvers,
             options.ValueConverters ?? new Dictionary<string, IValueConverter>(0),
             mutationRoot,
             subscriptionRoot,
-            options.Subscribers,
+            resolvers,
             schemaDirectives
         );
 
         return schema;
     }
 
+    private SchemaBuilder Add(Import importDefinition)
+    {
+        _imports.Add(importDefinition);
+        return this;
+    }
+
     private async Task AddImports(IReadOnlyList<IImportProvider> providers)
     {
         if (providers.Count == 0)
             return;
 
-        var parentOptions = new ParserOptions()
+        var parentOptions = new ParserOptions
         {
             ImportProviders = providers.ToList()
         };
@@ -286,28 +296,28 @@ private async Task AddImports(IReadOnlyList<IImportProvider> providers)
             var provider = providers.FirstOrDefault(p => p.CanImport(path, types));
 
             if (provider is null)
-                throw new InvalidOperationException($"No import provider capable of handling import '{import}' given. " +
-                                                    $"Use {nameof(SchemaBuildOptions)}.{nameof(SchemaBuildOptions.ImportProviders)} to set the providers.");
+                throw new InvalidOperationException(
+                    $"No import provider capable of handling import '{import}' given. " +
+                    $"Use {nameof(SchemaBuildOptions)}.{nameof(SchemaBuildOptions.ImportProviders)} to set the providers.");
 
             var typeSystemDocument = await provider.ImportAsync(path, types, parentOptions);
 
             if (typeSystemDocument.Imports != null)
                 foreach (var subImport in typeSystemDocument.Imports)
-                {
                     imports.Enqueue(subImport);
-                }
 
             Add(typeSystemDocument);
         }
     }
 
-    private IEnumerable<TypeDefinition> RunDirectiveVisitors(IEnumerable<TypeDefinition> typeDefinitions, SchemaBuildOptions options)
+    private IEnumerable<TypeDefinition> RunDirectiveVisitors(IEnumerable<TypeDefinition> typeDefinitions,
+        SchemaBuildOptions options)
     {
         if (options.DirectiveVisitorFactories is null)
             return typeDefinitions;
 
         var visitors = options.DirectiveVisitorFactories
-            .Select(factory => new KeyValuePair<string,DirectiveVisitor>(
+            .Select(factory => new KeyValuePair<string, DirectiveVisitor>(
                 factory.Key,
                 factory.Value(this) //todo: use options instead of this
             ));
@@ -318,61 +328,59 @@ private IEnumerable<TypeDefinition> RunDirectiveVisitors(IEnumerable<TypeDefinit
 
     private IEnumerable<TypeDefinition> RunDirectiveVisitors(
         IEnumerable<TypeDefinition> typeDefinitions,
-        SchemaBuildOptions options, 
+        SchemaBuildOptions options,
         IEnumerable<KeyValuePair<string, DirectiveVisitor>> visitors)
     {
         var typeDefinitionList = typeDefinitions.ToList();
 
         foreach (var (directiveName, visitor) in visitors)
+        foreach (var typeDefinition in typeDefinitionList)
         {
-            foreach (var typeDefinition in typeDefinitionList)
+            if (typeDefinition is not ObjectDefinition objectDefinition)
             {
-                if (typeDefinition is not ObjectDefinition objectDefinition)
-                {
-                    yield return typeDefinition;
-                    continue;
-                }
+                yield return typeDefinition;
+                continue;
+            }
 
-                if (visitor.FieldDefinition != null && objectDefinition.Fields is {Count: > 0})
+            if (visitor.FieldDefinition != null && objectDefinition.Fields is { Count: > 0 })
+            {
+                var fieldsChanged = false;
+                var fields = new List<FieldDefinition>(objectDefinition.Fields.Count);
+                foreach (var fieldDefinition in objectDefinition.Fields)
                 {
-                    bool fieldsChanged = false;
-                    var fields = new List<FieldDefinition>(objectDefinition.Fields.Count);
-                    foreach (var fieldDefinition in objectDefinition.Fields)
+                    if (!fieldDefinition.TryGetDirective(directiveName, out var directive))
+                        continue;
+
+                    var resolver = options.Resolvers?.GetResolver(typeDefinition.Name, fieldDefinition.Name);
+                    var subscriber = options.Subscribers?.GetSubscriber(typeDefinition.Name, fieldDefinition.Name);
+                    var context = new DirectiveFieldVisitorContext(
+                        fieldDefinition,
+                        resolver,
+                        subscriber
+                    );
+
+                    var maybeSameContext = visitor.FieldDefinition(directive, context);
+
+                    // field not modified
+                    if (maybeSameContext == context)
                     {
-                        if (!fieldDefinition.TryGetDirective(directiveName, out var directive))
-                            continue;
-
-                        var resolver = options.Resolvers?.GetResolver(typeDefinition.Name, fieldDefinition.Name);
-                        var subscriber = options.Subscribers?.GetSubscriber(typeDefinition.Name, fieldDefinition.Name);
-                        var context = new DirectiveFieldVisitorContext(
-                            fieldDefinition,
-                            resolver,
-                            subscriber
-                            );
-
-                        DirectiveFieldVisitorContext? maybeSameContext = visitor.FieldDefinition(directive, context);
-
-                        // field not modified
-                        if (maybeSameContext == context)
-                        {
-                            fields.Add(fieldDefinition);
-                            continue;
-                        }
-
-                        fieldsChanged = true;
-
-                        // field removed
-                        if (maybeSameContext is null)
-                            continue;
-                        
-                        fields.Add(maybeSameContext.Field);
+                        fields.Add(fieldDefinition);
+                        continue;
                     }
 
-                    if (fieldsChanged)
-                        yield return objectDefinition.WithFields(fields);
-                    else 
-                        yield return objectDefinition;
+                    fieldsChanged = true;
+
+                    // field removed
+                    if (maybeSameContext is null)
+                        continue;
+
+                    fields.Add(maybeSameContext.Field);
                 }
+
+                if (fieldsChanged)
+                    yield return objectDefinition.WithFields(fields);
+                else
+                    yield return objectDefinition;
             }
         }
     }
diff --git a/src/graphql/TypeSystem/SchemaExtensions.cs b/src/graphql/TypeSystem/SchemaExtensions.cs
index fd0d60705..f3ada0c9e 100644
--- a/src/graphql/TypeSystem/SchemaExtensions.cs
+++ b/src/graphql/TypeSystem/SchemaExtensions.cs
@@ -1,4 +1,7 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
@@ -24,5 +27,42 @@ public static IValueConverter GetRequiredValueConverter(this ISchema schema, str
                    throw new ArgumentOutOfRangeException(nameof(type), $"Schema does not contain a value converter for '{type}'.");
 
         }
+
+        public static TypeSystemDocument ToTypeSystem(this ISchema schema)
+        {
+            var typeDefinitions = schema.QueryTypes<TypeDefinition>().ToList();
+            var directiveDefinitions = schema.QueryDirectiveTypes().ToList();
+
+            var schemaDefinition = schema.ToSchemaDefinition();
+            return new TypeSystemDocument(
+                new []{schemaDefinition},
+                typeDefinitions,
+                directiveDefinitions);
+        }
+
+        public static SchemaDefinition ToSchemaDefinition(this ISchema schema)
+        {
+            return new SchemaDefinition(
+                null,
+                new Language.Nodes.Directives(schema.Directives.ToList()),
+                new RootOperationTypeDefinitions(GetOperations(schema).ToList()));
+
+            static IEnumerable<RootOperationTypeDefinition> GetOperations(ISchema schema)
+            {
+                yield return new RootOperationTypeDefinition(
+                    OperationType.Query,
+                    new NamedType(schema.Query.Name));
+
+                if (schema.Mutation is not null)
+                    yield return new RootOperationTypeDefinition(
+                        OperationType.Mutation,
+                        new NamedType(schema.Mutation.Name));
+
+                if (schema.Subscription is not null)
+                    yield return new RootOperationTypeDefinition(
+                        OperationType.Mutation,
+                        new NamedType(schema.Subscription.Name));
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/FieldSelectionMergingValidator.cs b/src/graphql/Validation/FieldSelectionMergingValidator.cs
index 393492fa0..09b17b67d 100644
--- a/src/graphql/Validation/FieldSelectionMergingValidator.cs
+++ b/src/graphql/Validation/FieldSelectionMergingValidator.cs
@@ -20,6 +20,9 @@ public FieldSelectionMergingValidator(IRuleVisitorContext context)
 
         public void Validate(SelectionSet selectionSet)
         {
+            if (_context.Tracker.ParentType is null)
+                return;
+
             var comparedFragmentPairs = new PairSet();
             var cachedFieldsAndFragmentNames = new Dictionary<SelectionSet, CachedField>();
             var conflicts = FindConflictsWithinSelectionSet(
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index d479a9489..b17f86700 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -24,9 +24,16 @@ public TypeTracker(ISchema schema)
 
             Types.Push(root);
         };
-        LeaveOperationDefinition = node => { Types.TryPop(out _); };
+        LeaveOperationDefinition = node =>
+        {
+            Types.TryPop(out _);
+        };
+
+        EnterSelectionSet = node =>
+        {
+            ParentTypes.Push(CurrentType);
+        };
 
-        EnterSelectionSet = node => { ParentTypes.Push(CurrentType); };
 
         LeaveSelectionSet = node => { ParentTypes.TryPop(out _); };
 
diff --git a/src/graphql/ValueResolution/IResolverContext.cs b/src/graphql/ValueResolution/IResolverContext.cs
index e98025b0f..f815cdee3 100644
--- a/src/graphql/ValueResolution/IResolverContext.cs
+++ b/src/graphql/ValueResolution/IResolverContext.cs
@@ -3,6 +3,7 @@
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem;
 
 namespace Tanka.GraphQL.ValueResolution
 {
@@ -27,5 +28,7 @@ public interface IResolverContext
         IDictionary<object, object> Items { get; }
 
         IReadOnlyCollection<FieldSelection> Fields { get; }
+
+        ISchema Schema => ExecutionContext.Schema;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/Resolve.cs b/src/graphql/ValueResolution/Resolve.cs
index 0212eade8..a24c35af4 100644
--- a/src/graphql/ValueResolution/Resolve.cs
+++ b/src/graphql/ValueResolution/Resolve.cs
@@ -42,6 +42,19 @@ public static Resolver PropertyOf<T>(Func<T, object?> getValue)
             };
         }
 
+        public static Resolver PropertyOf<T>(Func<T, IResolverContext, object?> getValue)
+        {
+            return context =>
+            {
+                var source = context.ObjectValue is T objectValue ? objectValue : default;
+
+                if (source == null) return ResolveSync.As(null);
+
+                var value = getValue(source, context);
+                return ResolveSync.As(value);
+            };
+        }
+
         public static Resolver PropertyOf<T>(Func<T, IEnumerable<object?>?> getValue)
         {
             return context =>
diff --git a/tanka-graphql.sln.DotSettings b/tanka-graphql.sln.DotSettings
index 0609f895f..7299115aa 100644
--- a/tanka-graphql.sln.DotSettings
+++ b/tanka-graphql.sln.DotSettings
@@ -7,5 +7,6 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=middlewares/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=punctuator/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=QLWS/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=starwars/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=subfields/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=tanka/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/tests/graphql.tests.data/graphql.tests.data.csproj b/tests/graphql.tests.data/graphql.tests.data.csproj
index 45fdbca53..31e80a747 100644
--- a/tests/graphql.tests.data/graphql.tests.data.csproj
+++ b/tests/graphql.tests.data/graphql.tests.data.csproj
@@ -8,12 +8,6 @@
     <IsTestProject>false</IsTestProject>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Compile Remove="starwars\**" />
-    <EmbeddedResource Remove="starwars\**" />
-    <None Remove="starwars\**" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
diff --git a/tests/graphql.tests.data/starwars/StarwarsFixture.cs b/tests/graphql.tests.data/starwars/StarwarsFixture.cs
index 0d06070c2..ae61ba8da 100644
--- a/tests/graphql.tests.data/starwars/StarwarsFixture.cs
+++ b/tests/graphql.tests.data/starwars/StarwarsFixture.cs
@@ -1,24 +1,21 @@
 using System;
-using Tanka.GraphQL.Tools;
+using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Tests.Data.Starwars
+namespace Tanka.GraphQL.Tests.Data.Starwars;
+
+public class StarwarsFixture : IDisposable
 {
-    public class StarwarsFixture : IDisposable
+    public void Dispose()
     {
-        public void Dispose()
-        {
-        }
+    }
 
-        public ISchema CreateSchema(Starwars starwars)
-        {
-            var schema = StarwarsSchema.Create();
-            var resolvers = StarwarsResolvers.BuildResolvers(starwars);
-            var executable = SchemaTools.MakeExecutableSchemaWithIntrospection(
-                schema,
-                resolvers);
+    public Task<ISchema> CreateSchema(Starwars starwars)
+    {
+        var builder = StarwarsSchema.Create();
+        var resolvers = StarwarsResolvers.BuildResolvers(starwars);
+        var executable = builder.Build(resolvers);
 
-            return executable;
-        }
+        return executable;
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/starwars/StarwarsResolvers.cs b/tests/graphql.tests.data/starwars/StarwarsResolvers.cs
index 24c47e3d6..99610a436 100644
--- a/tests/graphql.tests.data/starwars/StarwarsResolvers.cs
+++ b/tests/graphql.tests.data/starwars/StarwarsResolvers.cs
@@ -1,92 +1,91 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using static Tanka.GraphQL.ValueResolution.Resolve;
 
-namespace Tanka.GraphQL.Tests.Data.Starwars
+namespace Tanka.GraphQL.Tests.Data.Starwars;
+
+public class StarwarsResolvers
 {
-    public class StarwarsResolvers
+    public static IResolverMap BuildResolvers(Starwars starwars)
     {
-        public static ObjectTypeMap BuildResolvers(Starwars starwars)
+        async ValueTask<IResolverResult> ResolveCharacter(IResolverContext context)
         {
-            async ValueTask<IResolverResult> ResolveCharacter(IResolverContext context)
-            {
-                var id = (string) context.Arguments["id"];
-                var character = await starwars.GetCharacter(id).ConfigureAwait(false);
-                return As(context.ExecutionContext.Schema.GetNamedType<ObjectType>("Human"), character);
-            }
+            var id = (string)context.Arguments["id"];
+            var character = await starwars.GetCharacter(id).ConfigureAwait(false);
+            return As(context.ExecutionContext.Schema.GetRequiredNamedType<ObjectDefinition>("Human"), character);
+        }
 
-            async ValueTask<IResolverResult> ResolveHuman(IResolverContext context)
-            {
-                var id = (string) context.Arguments["id"];
+        async ValueTask<IResolverResult> ResolveHuman(IResolverContext context)
+        {
+            var id = (string)context.Arguments["id"];
 
-                var human = await starwars.GetHuman(id).ConfigureAwait(false);
-                return As(human);
-            }
+            var human = await starwars.GetHuman(id).ConfigureAwait(false);
+            return As(human);
+        }
 
-            async ValueTask<IResolverResult> ResolveFriends(IResolverContext context)
-            {
-                var character = (Starwars.Character) context.ObjectValue;
-                var friends = character.GetFriends();
-                await Task.Delay(0).ConfigureAwait(false);
-                return As(friends, friend => CharacterIsTypeOf(friend, context));
-            }
+        async ValueTask<IResolverResult> ResolveFriends(IResolverContext context)
+        {
+            var character = (Starwars.Character)context.ObjectValue;
+            var friends = character.GetFriends();
+            await Task.Delay(0).ConfigureAwait(false);
+            return As(friends, (_, friend) => CharacterIsTypeOf(friend, context));
+        }
 
-            IType CharacterIsTypeOf(object character, IResolverContext context)
+        ObjectDefinition CharacterIsTypeOf(object character, IResolverContext context)
+        {
+            return character switch
             {
-                return character switch
-                {
-                    Starwars.Human human => context.ExecutionContext.Schema.GetNamedType<ObjectType>("Human"),
-                    _ => throw new ArgumentOutOfRangeException(nameof(character))
-                };
-            }
+                Starwars.Human human => context.ExecutionContext.Schema.GetRequiredNamedType<ObjectDefinition>("Human"),
+                _ => throw new ArgumentOutOfRangeException(nameof(character))
+            };
+        }
 
-            async ValueTask<IResolverResult> ResolveCharacters(IResolverContext context)
-            {
-                await Task.Delay(0).ConfigureAwait(false);
-                return As(starwars.Characters, character => CharacterIsTypeOf(character, context));
-            }
+        async ValueTask<IResolverResult> ResolveCharacters(IResolverContext context)
+        {
+            await Task.Delay(0).ConfigureAwait(false);
+            return As(starwars.Characters, (_, character) => CharacterIsTypeOf(character, context));
+        }
 
-            async ValueTask<IResolverResult> AddHuman(IResolverContext context)
-            {
-                var humanInput = (IDictionary<string, object>) context.Arguments["human"];
-                var human = starwars.AddHuman(humanInput["name"].ToString());
+        async ValueTask<IResolverResult> AddHuman(IResolverContext context)
+        {
+            var humanInput = (IDictionary<string, object>)context.Arguments["human"];
+            var human = starwars.AddHuman(humanInput["name"].ToString());
 
-                await Task.Delay(0).ConfigureAwait(false);
-                return As(human);
-            }
+            await Task.Delay(0).ConfigureAwait(false);
+            return As(human);
+        }
 
-            var resolverMap = new ObjectTypeMap
+        var resolverMap = new ResolversMap
+        {
+            // Root query
+            ["Query"] = new()
             {
-                // Root query
-                ["Query"] = new FieldResolversMap
-                {
-                    {"human", ResolveHuman},
-                    {"character", ResolveCharacter},
-                    {"characters", ResolveCharacters}
-                },
+                { "human", ResolveHuman },
+                { "character", ResolveCharacter },
+                { "characters", ResolveCharacters }
+            },
 
-                // Root mutation
-                ["Mutation"] = new FieldResolversMap
-                {
-                    {"addHuman", AddHuman}
-                },
+            // Root mutation
+            ["Mutation"] = new()
+            {
+                { "addHuman", AddHuman }
+            },
 
-                // ObjectType
-                ["Human"] = new FieldResolversMap
-                {
-                    {"id", PropertyOf<Starwars.Human>(c => c.Id)},
-                    {"name", PropertyOf<Starwars.Human>(c => c.Name)},
-                    {"homePlanet", PropertyOf<Starwars.Human>(c => c.HomePlanet)},
-                    {"friends", ResolveFriends},
-                    {"appearsIn", PropertyOf<Starwars.Human>(h => h.AppearsIn)}
-                }
-            };
+            // ObjectType
+            ["Human"] = new()
+            {
+                { "id", PropertyOf<Starwars.Human>(c => c.Id) },
+                { "name", PropertyOf<Starwars.Human>(c => c.Name) },
+                { "homePlanet", PropertyOf<Starwars.Human>(c => c.HomePlanet) },
+                { "friends", ResolveFriends },
+                { "appearsIn", PropertyOf<Starwars.Human>(h => h.AppearsIn) }
+            }
+        };
 
-            return resolverMap;
-        }
+        return resolverMap;
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/starwars/StarwarsSchema.cs b/tests/graphql.tests.data/starwars/StarwarsSchema.cs
index 5cca37465..9134f9329 100644
--- a/tests/graphql.tests.data/starwars/StarwarsSchema.cs
+++ b/tests/graphql.tests.data/starwars/StarwarsSchema.cs
@@ -1,68 +1,49 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
+namespace Tanka.GraphQL.Tests.Data.Starwars;
 
-namespace Tanka.GraphQL.Tests.Data.Starwars
+public class StarwarsSchema
 {
-    public class StarwarsSchema
+    public static SchemaBuilder Create()
     {
-        public static SchemaBuilder Create()
-        {
-            var builder = new SchemaBuilder();
-
-            var Episode = new EnumType("Episode", new EnumValues
-            {
-                ["NEWHOPE"] = null,
-                ["EMPIRE"] = null,
-                ["JEDI"] = null
-            });
-
-            builder.Include(Episode);
-
-            var EpisodeList = new ListType(Episode);
-
-            builder.Interface("Character", out var Character,
-                "Character in the movie");
-
-            // use NamedTypeReference as proxy to bypass circular dependencies
-            var CharacterList = new List<>(Character);
-
-            builder.Connections(connect => connect
-                .Field(Character, "id", ScalarType.NonNullString)
-                .Field(Character, "name", ScalarType.NonNullString)
-                .Field(Character, "friends", CharacterList)
-                .Field(Character, "appearsIn", EpisodeList));
-
-            builder.Object("Human", out var Human,
-                    "Human character",
-                    new[] {Character})
-                .Connections(connect => connect
-                    .Field(Human, "id", ScalarType.NonNullString)
-                    .Field(Human, "name", ScalarType.NonNullString)
-                    .Field(Human, "friends", CharacterList)
-                    .Field(Human, "appearsIn", EpisodeList)
-                    .Field(Human, "homePlanet", ScalarType.String));
-
-            builder.Query(out var Query)
-                .Connections(connect => connect
-                    .Field(Query, "human", Human,
-                        args: args => args.Arg("id", ScalarType.NonNullString, default, default))
-                    .Field(Query, "character", Character,
-                        args: args => args.Arg("id", ScalarType.NonNullString, default, default))
-                    .Field(Query, "characters", CharacterList));
-
-
-            builder.InputObject("HumanInput", out var HumanInput)
-                .Connections(connect => connect
-                    .InputField(HumanInput, "name", ScalarType.NonNullString));
-
-            builder.Mutation(out var Mutation)
-                .Connections(connect => connect
-                    .Field(Mutation, "addHuman", Human,
-                        args: args => args.Arg("human", HumanInput, default, default)));
-
-            return builder;
-        }
+        var builder = new SchemaBuilder()
+            .Add(@"
+enum Episode {
+    NEWHOPE
+    EMPIRE
+    JEDI
+}
+
+""""""Character in the movie""""""
+interface Character {
+    id: String!
+    name: String!
+    friends: [Character!]!
+    appearsIn: [Episode!]!
+}
+
+""""""Human character""""""
+type Human implements Character {
+    id: String!
+    name: String!
+    friends: [Character!]!
+    appearsIn: [Episode!]! 
+    homePlanet: String
+}
+
+input HumanInput {
+    name: String!
+}
+
+type Query {
+    human(id: String!): Human
+    character(id: String!): Character
+    characters: [Character!]!
+}
+
+type Mutation {
+    addHuman(human: HumanInput!): Human
+}
+");
+
+        return builder;
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Bug/Bug_339.cs b/tests/graphql.tests/Bug/Bug_339.cs
index 78e66d906..cf3cc5710 100644
--- a/tests/graphql.tests/Bug/Bug_339.cs
+++ b/tests/graphql.tests/Bug/Bug_339.cs
@@ -33,12 +33,11 @@ type Query {
                 ")
             .Build(new SchemaBuildOptions());
 
-        var introspectionSchema = await Introspect.Schema(schema);
 
         /* When */
         var result = await Executor.ExecuteAsync(new ExecutionOptions
         {
-            Schema = introspectionSchema,
+            Schema = schema,
             Document = Introspect.DefaultQuery
         });
 
diff --git a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
index 01955b887..1e3e56408 100644
--- a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
+++ b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
@@ -69,8 +69,7 @@ type Subscription {}
 ");
 
 
-            var sourceSchema = builder.Build(new SchemaBuildOptions()).Result;
-            _introspectionSchema = Introspect.Schema(sourceSchema).Result;
+            _introspectionSchema = builder.Build(new SchemaBuildOptions()).Result;
         }
 
         private readonly ISchema _introspectionSchema;
@@ -180,24 +179,12 @@ public async Task Schema_types()
   ""data"": {
     ""__schema"": {
       ""types"": [
-        {
-          ""name"": ""Boolean""
-        },
         {
           ""name"": ""Enum""
         },
-        {
-          ""name"": ""Float""
-        },
-        {
-          ""name"": ""ID""
-        },
         {
           ""name"": ""InputObject""
         },
-        {
-          ""name"": ""Int""
-        },
         {
           ""name"": ""Interface""
         },
@@ -213,9 +200,6 @@ public async Task Schema_types()
         {
           ""name"": ""Query""
         },
-        {
-          ""name"": ""String""
-        },
         {
           ""name"": ""Subscription""
         },
diff --git a/tests/graphql.tests/StarwarsFacts.cs b/tests/graphql.tests/StarwarsFacts.cs
index da729b0f4..cfb25acce 100644
--- a/tests/graphql.tests/StarwarsFacts.cs
+++ b/tests/graphql.tests/StarwarsFacts.cs
@@ -1,557 +1,79 @@
 using System.Threading.Tasks;
-using Tanka.GraphQL.Introspection;
 using Tanka.GraphQL.Tests.Data;
 using Tanka.GraphQL.Tests.Data.Starwars;
 using Xunit;
 using static Tanka.GraphQL.Executor;
-using static Tanka.GraphQL.Parser;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class StarwarsFacts : IClassFixture<StarwarsFixture>
 {
-    public class StarwarsFacts : IClassFixture<StarwarsFixture>
+    private readonly StarwarsFixture _fixture;
+
+    public StarwarsFacts(StarwarsFixture fixture)
     {
-        public StarwarsFacts(StarwarsFixture fixture)
-        {
-            _fixture = fixture;
-        }
+        _fixture = fixture;
+    }
 
-        private readonly StarwarsFixture _fixture;
+    [Fact]
+    public async Task Introspect()
+    {
+        /* Given */
+        var starwars = new Starwars();
+        var schema = await _fixture.CreateSchema(starwars);
 
-        [Fact]
-        public async Task Introspect()
-        {
-            /* Given */
-            var starwars = new Starwars();
-            var schema = _fixture.CreateSchema(starwars);
-
-            /* When */
-            var result = await ExecuteAsync(
-                new ExecutionOptions()
-                {
-                    Document =  ParseDocument(GraphQL.Introspection.Introspect.DefaultQuery),
-                    Schema = schema
-                }).ConfigureAwait(false);
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
-  ""data"": {
-    ""__schema"": {
-      ""queryType"": {
-        ""name"": ""Query""
-      },
-      ""types"": [
-        {
-          ""description"": ""The `String` scalar type represents textual data, represented as UTF-8 character sequences. The String type is most often used by GraphQL to represent free-form human-readable text."",
-          ""kind"": ""SCALAR"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""String""
-        },
-        {
-          ""description"": ""The `Int` scalar type represents non-fractional signed whole numeric values"",
-          ""kind"": ""SCALAR"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Int""
-        },
-        {
-          ""description"": ""The `Float` scalar type represents signed double-precision fractional values as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)"",
-          ""kind"": ""SCALAR"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Float""
-        },
-        {
-          ""description"": ""The `Boolean` scalar type represents `true` or `false`"",
-          ""kind"": ""SCALAR"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Boolean""
-        },
-        {
-          ""description"": ""The ID scalar type represents a unique identifier, often used to refetch an object or as the key for a cache. The ID type is serialized in the same way as a String; however, it is not intended to be human‐readable. While it is often numeric, it should always serialize as a String."",
-          ""kind"": ""SCALAR"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""ID""
-        },
-        {
-          ""description"": """",
-          ""kind"": ""ENUM"",
-          ""enumValues"": [
-            {
-              ""name"": ""NEWHOPE"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""isDeprecated"": false
-            },
-            {
-              ""name"": ""EMPIRE"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""isDeprecated"": false
-            },
-            {
-              ""name"": ""JEDI"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""isDeprecated"": false
-            }
-          ],
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Episode""
-        },
-        {
-          ""description"": ""Character in the movie"",
-          ""kind"": ""INTERFACE"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": [
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""String"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""id"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""String"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""name"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Character"",
-                  ""kind"": ""INTERFACE""
-                },
-                ""name"": null,
-                ""kind"": ""LIST""
-              },
-              ""name"": ""friends"",
-              ""deprecationReason"": null,
-              ""description"": """",
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Episode"",
-                  ""kind"": ""ENUM""
-                },
-                ""name"": null,
-                ""kind"": ""LIST""
-              },
-              ""name"": ""appearsIn"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            }
-          ],
-          ""possibleTypes"": [
-            {
-              ""ofType"": null,
-              ""name"": ""Human"",
-              ""kind"": ""OBJECT""
-            }
-          ],
-          ""inputFields"": null,
-          ""name"": ""Character""
-        },
-        {
-          ""description"": ""Human character"",
-          ""kind"": ""OBJECT"",
-          ""enumValues"": null,
-          ""interfaces"": [
-            {
-              ""ofType"": null,
-              ""name"": ""Character"",
-              ""kind"": ""INTERFACE""
-            }
-          ],
-          ""fields"": [
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""String"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""id"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""String"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""name"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            },
+        /* When */
+        var result = await ExecuteAsync(
+            new ExecutionOptions
             {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Character"",
-                  ""kind"": ""INTERFACE""
-                },
-                ""name"": null,
-                ""kind"": ""LIST""
-              },
-              ""name"": ""friends"",
-              ""deprecationReason"": null,
-              ""description"": """",
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Episode"",
-                  ""kind"": ""ENUM""
-                },
-                ""name"": null,
-                ""kind"": ""LIST""
-              },
-              ""name"": ""appearsIn"",
-              ""deprecationReason"": null,
-              ""description"": """",
-              ""args"": [],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": null,
-                ""name"": ""String"",
-                ""kind"": ""SCALAR""
-              },
-              ""name"": ""homePlanet"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            }
-          ],
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Human""
-        },
-        {
-          ""description"": """",
-          ""kind"": ""OBJECT"",
-          ""enumValues"": null,
-          ""interfaces"": [],
-          ""fields"": [
-            {
-              ""type"": {
-                ""ofType"": null,
-                ""name"": ""Human"",
-                ""kind"": ""OBJECT""
-              },
-              ""name"": ""human"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [
-                {
-                  ""defaultValue"": null,
-                  ""type"": {
-                    ""ofType"": {
-                      ""ofType"": null,
-                      ""name"": ""String"",
-                      ""kind"": ""SCALAR""
-                    },
-                    ""name"": null,
-                    ""kind"": ""NON_NULL""
-                  },
-                  ""name"": ""id"",
-                  ""description"": """"
-                }
-              ],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": null,
-                ""name"": ""Character"",
-                ""kind"": ""INTERFACE""
-              },
-              ""name"": ""character"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [
-                {
-                  ""defaultValue"": null,
-                  ""type"": {
-                    ""ofType"": {
-                      ""ofType"": null,
-                      ""name"": ""String"",
-                      ""kind"": ""SCALAR""
-                    },
-                    ""name"": null,
-                    ""kind"": ""NON_NULL""
-                  },
-                  ""name"": ""id"",
-                  ""description"": """"
-                }
-              ],
-              ""isDeprecated"": false
-            },
-            {
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Character"",
-                  ""kind"": ""INTERFACE""
-                },
-                ""name"": null,
-                ""kind"": ""LIST""
-              },
-              ""name"": ""characters"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [],
-              ""isDeprecated"": false
-            }
-          ],
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Query""
-        },
-        {
-          ""description"": """",
-          ""kind"": ""INPUT_OBJECT"",
-          ""enumValues"": null,
-          ""interfaces"": null,
-          ""fields"": null,
-          ""possibleTypes"": null,
-          ""inputFields"": [
-            {
-              ""defaultValue"": null,
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""String"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""name"",
-              ""description"": """"
-            }
-          ],
-          ""name"": ""HumanInput""
-        },
-        {
-          ""description"": """",
-          ""kind"": ""OBJECT"",
-          ""enumValues"": null,
-          ""interfaces"": [],
-          ""fields"": [
-            {
-              ""type"": {
-                ""ofType"": null,
-                ""name"": ""Human"",
-                ""kind"": ""OBJECT""
-              },
-              ""name"": ""addHuman"",
-              ""description"": """",
-              ""deprecationReason"": null,
-              ""args"": [
-                {
-                  ""defaultValue"": null,
-                  ""type"": {
-                    ""ofType"": null,
-                    ""name"": ""HumanInput"",
-                    ""kind"": ""INPUT_OBJECT""
-                  },
-                  ""name"": ""human"",
-                  ""description"": """"
-                }
-              ],
-              ""isDeprecated"": false
-            }
-          ],
-          ""possibleTypes"": null,
-          ""inputFields"": null,
-          ""name"": ""Mutation""
-        }
-      ],
-      ""subscriptionType"": null,
-      ""directives"": [
-        {
-          ""name"": ""include"",
-          ""locations"": [
-            ""FIELD"",
-            ""FRAGMENT_SPREAD"",
-            ""INLINE_FRAGMENT""
-          ],
-          ""description"": """",
-          ""args"": [
-            {
-              ""defaultValue"": null,
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Boolean"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""if"",
-              ""description"": """"
-            }
-          ]
-        },
-        {
-          ""name"": ""skip"",
-          ""locations"": [
-            ""FIELD"",
-            ""FRAGMENT_SPREAD"",
-            ""INLINE_FRAGMENT""
-          ],
-          ""description"": """",
-          ""args"": [
-            {
-              ""defaultValue"": null,
-              ""type"": {
-                ""ofType"": {
-                  ""ofType"": null,
-                  ""name"": ""Boolean"",
-                  ""kind"": ""SCALAR""
-                },
-                ""name"": null,
-                ""kind"": ""NON_NULL""
-              },
-              ""name"": ""if"",
-              ""description"": """"
-            }
-          ]
-        },
-        {
-          ""name"": ""deprecated"",
-          ""description"": """",
-          ""locations"": [
-            ""FIELD_DEFINITION"",
-            ""ENUM_VALUE""
-          ],
-          ""args"": [
-            {
-              ""name"": ""reason"",
-              ""description"": """",
-              ""type"": {
-                ""kind"": ""SCALAR"",
-                ""name"": ""String"",
-                ""ofType"": null
-              },
-              ""defaultValue"": null
-            }
-          ]
-        }
-      ],
-      ""mutationType"": {
-        ""name"": ""Mutation""
-      }
+                Document = GraphQL.Introspection.Introspect.DefaultQuery,
+                Schema = schema,
+                IncludeExceptionDetails = true
+            }).ConfigureAwait(false);
+
+        /* Then */
+        Assert.NotNull(result.Data);
+        Assert.NotEmpty(result?.Data);
+        
+        Assert.Null(result.Errors);
     }
-  }
-}");
-        }
 
-        [Fact]
-        public async Task Mutate_add_human_leia()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Mutate_add_human_leia()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var query = $@"
-    mutation {{
-        addHuman(human: {{name:""Leia""}}) {{
+        var query = @"
+    mutation {
+        addHuman(human: {name:""Leia""}) {
             id
             name
             homePlanet
-            friends {{
+            friends {
                 name
-            }}
-        }}
-    }}
+            }
+        }
+    }
 ";
 
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
               ""data"": {
                 ""addHuman"": {
                   ""id"": ""humans/leia"",
@@ -561,16 +83,16 @@ public async Task Mutate_add_human_leia()
                 }
               }
             }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_character_luke()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_character_luke()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var id = "\"humans/luke\"";
-            var query = $@"{{
+        var id = "\"humans/luke\"";
+        var query = $@"{{
     character(id: {id}) {{
         id
         name
@@ -578,22 +100,22 @@ public async Task Query_character_luke()
     }}
 }}";
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                    ""data"": {
                     ""character"": {
                       ""id"": ""humans/luke"",
@@ -606,16 +128,16 @@ public async Task Query_character_luke()
                      }
                     }
                  }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_typename_of_character_luke()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_typename_of_character_luke()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var id = "\"humans/luke\"";
-            var query = $@"{{
+        var id = "\"humans/luke\"";
+        var query = $@"{{
     character(id: {id}) {{
         __typename
         id
@@ -624,22 +146,22 @@ public async Task Query_typename_of_character_luke()
     }}
 }}";
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                    ""data"": {
                     ""character"": {
                       ""__typename"":""Human"",
@@ -653,39 +175,39 @@ public async Task Query_typename_of_character_luke()
                      }
                     }
                  }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_typename_of_characters()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_typename_of_characters()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var query = $@"{{
-                    characters {{
+        var query = @"{
+                    characters {
                         __typename
                         id
                         name
                         appearsIn
-                    }}
-                }}";
+                    }
+                }";
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""characters"": [
                       {
@@ -711,16 +233,16 @@ public async Task Query_typename_of_characters()
                     ]
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_character_luke_skip_appearsIn()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_character_luke_skip_appearsIn()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var id = "\"humans/luke\"";
-            var query = $@"{{
+        var id = "\"humans/luke\"";
+        var query = $@"{{
     character(id: {id}) {{
         id
         name
@@ -728,22 +250,22 @@ appearsIn @skip(if: true)
     }}
 }}";
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                    ""data"": {
                     ""character"": {
                       ""id"": ""humans/luke"",
@@ -751,16 +273,16 @@ appearsIn @skip(if: true)
                      }
                     }
                  }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_character_luke_do_not_include_appearsIn()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_character_luke_do_not_include_appearsIn()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var id = "\"humans/luke\"";
-            var query = $@"{{
+        var id = "\"humans/luke\"";
+        var query = $@"{{
     character(id: {id}) {{
         id
         name
@@ -768,22 +290,22 @@ appearsIn @include(if: false)
     }}
 }}";
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                    ""data"": {
                     ""character"": {
                       ""id"": ""humans/luke"",
@@ -791,40 +313,40 @@ appearsIn @include(if: false)
                      }
                     }
                  }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_characters_with_friends()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_characters_with_friends()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var query = $@"{{
-    characters {{
+        var query = @"{
+    characters {
         id
         name
-        friends {{
+        friends {
             id
             name
-        }}
-    }}
-}}";
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        }
+    }
+}";
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""characters"": [
                       {
@@ -849,16 +371,16 @@ public async Task Query_characters_with_friends()
                       }
                     ]
                   }}");
-        }
+    }
 
-        [Fact]
-        public async Task Query_human_luke()
-        {
-            /* Given */
-            var starwars = new Starwars();
+    [Fact]
+    public async Task Query_human_luke()
+    {
+        /* Given */
+        var starwars = new Starwars();
 
-            var id = "\"humans/luke\"";
-            var query = $@"
+        var id = "\"humans/luke\"";
+        var query = $@"
 
 query humans
 {{
@@ -881,22 +403,22 @@ fragment friendsAndFriends on Human {{
 ";
 
 
-            var executableSchema = _fixture.CreateSchema(starwars);
-            var options = new ExecutionOptions
-            {
-                Schema = executableSchema,
-                Document =  ParseDocument(query),
-                OperationName = null,
-                InitialValue = null,
-                VariableValues = null
-            };
-
-            /* When */
-            var actual = await ExecuteAsync(options).ConfigureAwait(false);
-
-            /* Then */
-            actual.ShouldMatchJson(
-                @"{
+        var executableSchema = await _fixture.CreateSchema(starwars);
+        var options = new ExecutionOptions
+        {
+            Schema = executableSchema,
+            Document = query,
+            OperationName = null,
+            InitialValue = null,
+            VariableValues = null
+        };
+
+        /* When */
+        var actual = await ExecuteAsync(options).ConfigureAwait(false);
+
+        /* Then */
+        actual.ShouldMatchJson(
+            @"{
               ""data"": {
                 ""human"": {
                   ""id"": ""humans/luke"",
@@ -915,6 +437,5 @@ fragment friendsAndFriends on Human {{
                 }
               }
             }");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/SubscriptionsFacts.cs b/tests/graphql.tests/SubscriptionsFacts.cs
index 8103e3539..a26098f12 100644
--- a/tests/graphql.tests/SubscriptionsFacts.cs
+++ b/tests/graphql.tests/SubscriptionsFacts.cs
@@ -3,96 +3,90 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.Tests.Data;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class Message
 {
-    public class Message
-    {
-        public string Content { get; set; }
-    }
+    public string Content { get; set; }
+}
+
+public class SubscriptionsFacts
+{
+    private readonly ISchema _executable;
+    private readonly EventChannel<Message> _messagesChannel;
 
-    public class SubscriptionsFacts
+    public SubscriptionsFacts()
     {
-        public SubscriptionsFacts()
-        {
-            // schema
-            var builder = new SchemaBuilder();
-            builder.Object("Message", out var messageType)
-                .Connections(connect => connect
-                    .Field(messageType, "content", ScalarType.String));
+        // schema
+        var builder = new SchemaBuilder()
+            .Add(@"
+type Message {
+    content: String
+}
 
-            var messageListType = new List(messageType);
+type Query {
+    messages: [Message]
+}
 
-            builder.Query(out var query)
-                .Connections(connect => connect
-                    .Field(query, "messages", messageListType));
+type Subscription {
+    messageAdded: Message
+}
 
-            builder.Subscription(out var subscription)
-                .Connections(connect => connect
-                    .Field(subscription, "messageAdded", messageType));
+");
 
-            var schema = builder.Build();
+        // data
+        var messages = new List<Message>();
+        _messagesChannel = new EventChannel<Message>();
 
-            // data
-            var messages = new List<Message>();
-            _messagesChannel = new EventChannel<Message>();
+        // resolvers
+        ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context)
+        {
+            return ResolveSync.As(messages);
+        }
 
-            // resolvers
-            ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context)
-            {
-                return ResolveSync.As(messages);
-            }
+        ValueTask<ISubscriberResult> OnMessageAdded(IResolverContext context, CancellationToken unsubscribe)
+        {
+            return ResolveSync.Subscribe(_messagesChannel, unsubscribe);
+        }
 
-            ValueTask<ISubscriberResult> OnMessageAdded(IResolverContext context, CancellationToken unsubscribe)
-            {
-                return ResolveSync.Subscribe(_messagesChannel, unsubscribe);
-            }
+        ValueTask<IResolverResult> ResolveMessage(IResolverContext context)
+        {
+            return ResolveSync.As(context.ObjectValue);
+        }
 
-            ValueTask<IResolverResult> ResolveMessage(IResolverContext context)
+        var resolvers = new ResolversMap
+        {
+            ["Query"] = new()
             {
-                return ResolveSync.As(context.ObjectValue);
-            }
-
-            var resolvers = new ObjectTypeMap
+                { "messages", GetMessagesAsync }
+            },
+            ["Subscription"] = new()
             {
-                ["Query"] = new FieldResolversMap
-                {
-                    {"messages", GetMessagesAsync}
-                },
-                ["Subscription"] = new FieldResolversMap
-                {
-                    {"messageAdded", OnMessageAdded, ResolveMessage}
-                },
-                ["Message"] = new FieldResolversMap
-                {
-                    {"content", Resolve.PropertyOf<Message>(r => r.Content)}
-                }
-            };
-
-            // make executable
-            _executable = SchemaTools.MakeExecutableSchema(
-                schema,
-                resolvers,
-                resolvers);
-        }
+                { "messageAdded", OnMessageAdded, ResolveMessage }
+            },
+            ["Message"] = new()
+            {
+                { "content", Resolve.PropertyOf<Message>(r => r.Content) }
+            }
+        };
 
-        private readonly ISchema _executable;
-        private readonly EventChannel<Message> _messagesChannel;
+        // make executable
+        _executable = builder.Build(resolvers, resolvers).Result;
+    }
 
-        [Fact]
-        public async Task Should_stream_a_lot()
-        {
-            /* Given */
-            const int count = 10_000;
-            var unsubscribe = new CancellationTokenSource(TimeSpan.FromMinutes(1));
+    [Fact]
+    public async Task Should_stream_a_lot()
+    {
+        /* Given */
+        const int count = 10_000;
+        var unsubscribe = new CancellationTokenSource(TimeSpan.FromMinutes(1));
 
-            var query = @"
+        var query = @"
                 subscription MessageAdded {
                     messageAdded {
                         content
@@ -100,44 +94,44 @@ subscription MessageAdded {
                 }
                 ";
 
-            /* When */
-            var result = await Executor.SubscribeAsync(new ExecutionOptions
-            {
-                Document = Parser.ParseDocument(query),
-                Schema = _executable
-            }, unsubscribe.Token).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.SubscribeAsync(new ExecutionOptions
+        {
+            Document = query,
+            Schema = _executable
+        }, unsubscribe.Token).ConfigureAwait(false);
 
-            for (var i = 0; i < count; i++)
-            {
-                var expected = new Message {Content = i.ToString()};
-                await _messagesChannel.WriteAsync(expected);
-            }
+        for (var i = 0; i < count; i++)
+        {
+            var expected = new Message { Content = i.ToString() };
+            await _messagesChannel.WriteAsync(expected);
+        }
 
-            /* Then */
-            for (var i = 0; i < count; i++)
-            {
-                var actualResult = await result.Source.Reader.ReadAsync(unsubscribe.Token).ConfigureAwait(false);
+        /* Then */
+        for (var i = 0; i < count; i++)
+        {
+            var actualResult = await result.Source.Reader.ReadAsync(unsubscribe.Token).ConfigureAwait(false);
 
-                actualResult.ShouldMatchJson(@"{
+            actualResult.ShouldMatchJson(@"{
                     ""data"":{
                         ""messageAdded"": {
                             ""content"": ""{counter}""
                         }
                     }
                 }".Replace("{counter}", i.ToString()));
-            }
-
-            unsubscribe.Cancel();
         }
 
-        [Fact]
-        public async Task Should_subscribe()
-        {
-            /* Given */
-            var unsubscribe = new CancellationTokenSource(TimeSpan.FromSeconds(30));
-            var expected = new Message {Content = "hello"};
+        unsubscribe.Cancel();
+    }
+
+    [Fact]
+    public async Task Should_subscribe()
+    {
+        /* Given */
+        var unsubscribe = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+        var expected = new Message { Content = "hello" };
 
-            var query = @"
+        var query = @"
                 subscription MessageAdded {
                     messageAdded {
                         content
@@ -145,26 +139,25 @@ subscription MessageAdded {
                 }
                 ";
 
-            /* When */
-            var result = await Executor.SubscribeAsync(new ExecutionOptions
-            {
-                Document = Parser.ParseDocument(query),
-                Schema = _executable
-            }, unsubscribe.Token).ConfigureAwait(false);
+        /* When */
+        var result = await Executor.SubscribeAsync(new ExecutionOptions
+        {
+            Document = query,
+            Schema = _executable
+        }, unsubscribe.Token).ConfigureAwait(false);
 
-            await _messagesChannel.WriteAsync(expected);
+        await _messagesChannel.WriteAsync(expected);
 
-            /* Then */
-            var actualResult = await result.Source.Reader.ReadAsync(unsubscribe.Token).ConfigureAwait(false);
-            unsubscribe.Cancel();
+        /* Then */
+        var actualResult = await result.Source.Reader.ReadAsync(unsubscribe.Token).ConfigureAwait(false);
+        unsubscribe.Cancel();
 
-            actualResult.ShouldMatchJson(@"{
+        actualResult.ShouldMatchJson(@"{
                 ""data"":{
                     ""messageAdded"": {
                         ""content"": ""hello""
                     }
                 }
             }");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/graphql.tests.csproj b/tests/graphql.tests/graphql.tests.csproj
index a6e02065b..59286827b 100644
--- a/tests/graphql.tests/graphql.tests.csproj
+++ b/tests/graphql.tests/graphql.tests.csproj
@@ -7,42 +7,7 @@
     <RootNamespace>Tanka.GraphQL.Tests</RootNamespace>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Compile Remove="Bug\**" />
-    <Compile Remove="Descriptions\**" />
-    <Compile Remove="Tools\**" />
-    <Compile Remove="TypeSystem\**" />
-    <Compile Remove="Validation\**" />
-    <EmbeddedResource Remove="Bug\**" />
-    <EmbeddedResource Remove="Descriptions\**" />
-    <EmbeddedResource Remove="Tools\**" />
-    <EmbeddedResource Remove="TypeSystem\**" />
-    <EmbeddedResource Remove="Validation\**" />
-    <None Remove="Bug\**" />
-    <None Remove="Descriptions\**" />
-    <None Remove="Tools\**" />
-    <None Remove="TypeSystem\**" />
-    <None Remove="Validation\**" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <Compile Remove="ExtensionsRunnerFacts.cs" />
-    <Compile Remove="StarwarsFacts.cs" />
-    <Compile Remove="SubscriptionsFacts.cs" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <Compile Include="Bug\Bug_339.cs" />
-    <Compile Include="Validation\ValidatorFacts.Arguments.cs" />
-    <Compile Include="Validation\ValidatorFacts.cs" />
-    <Compile Include="Validation\ValidatorFacts.Directives.cs" />
-    <Compile Include="Validation\ValidatorFacts.Fields.cs" />
-    <Compile Include="Validation\ValidatorFacts.Fragments.cs" />
-    <Compile Include="Validation\ValidatorFacts.Variables.cs" />
-    <Compile Include="Validation\ValidatorFacts.ValidatorFacts.Selections.cs" />
-  </ItemGroup>
-
-  <ItemGroup>
+ <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NSubstitute" Version="4.3.0" />

From 04fcba869eea670094d202263075f87c7700ed46 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Sun, 13 Feb 2022 19:40:33 +0200
Subject: [PATCH 09/26] Server tests working

---
 .../TraceExtensionScope.cs                    |   2 +-
 .../Nodes/TypeSystem/FieldDefinition.cs       |   2 +-
 .../Nodes/TypeSystem/InputValueDefinition.cs  |   4 +-
 .../Nodes/TypeSystem/ObjectDefinition.cs      |   6 +-
 .../Nodes/TypeSystem/TypeExtension.cs         |   2 +-
 .../IntrospectionSchemaBuilderExtensions.cs   |  26 +-
 .../IntrospectionSchemaReader.cs              | 306 -------------
 .../LinkingSchemaBuilderExtensions.cs         |  87 ++--
 .../PreExecutedResolverResult.cs              |   4 +-
 src/graphql.server.links/RemoteSchemaTools.cs | 201 +++------
 .../graphql.server.links.csproj               |   4 +-
 src/graphql.server/ServerHub.cs               |   2 +-
 .../WebSockets/GraphQLWSProtocol.cs           |   2 +-
 src/graphql.server/graphql.server.csproj      |   2 +-
 .../IntrospectionSchemaBuilderExtensions.cs   | 185 ++++++++
 .../MakeRemoteExecutableDigitransitFacts.cs   | 259 -----------
 .../MakeRemoteExecutableFacts.cs              | 140 +-----
 .../graphql.server.links.tests.csproj         |   4 +-
 .../DigitransitIntrospectionFacts.cs          |  54 +--
 .../introspection/GitHubIntrospectionFacts.cs |  59 +--
 .../IntrospectionSchemaReaderFacts.cs         | 426 ------------------
 tests/graphql.server.tests.host/Startup.cs    |  12 +-
 .../graphql.server.tests.csproj               |   8 +-
 23 files changed, 404 insertions(+), 1393 deletions(-)
 delete mode 100644 src/graphql.server.links/IntrospectionSchemaReader.cs
 create mode 100644 src/graphql/Introspection/IntrospectionSchemaBuilderExtensions.cs
 delete mode 100644 tests/graphql.server.links.tests/MakeRemoteExecutableDigitransitFacts.cs
 delete mode 100644 tests/graphql.server.links.tests/introspection/IntrospectionSchemaReaderFacts.cs

diff --git a/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs b/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
index 6fe1d842d..4a3491c04 100644
--- a/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
+++ b/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
@@ -101,7 +101,7 @@ public ValueTask BeginResolveAsync(IResolverContext context)
             var record = new TraceExtensionRecord.ResolverTrace()
             {
                 StartOffset = start.TotalNanoSeconds(),
-                ParentType = context.ObjectType.Name,
+                ParentType = context.ObjectDefinition.Name,
                 FieldName = context.FieldName,
                 Path = context.Path.Segments.ToList(),
                 ReturnType = context.Field.Type.ToString()
diff --git a/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs b/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
index a67c87adf..7be9d7795 100644
--- a/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
@@ -9,7 +9,7 @@ public FieldDefinition(StringValue? description,
             in Name name,
             ArgumentsDefinition? arguments,
             TypeBase type,
-            Directives? directives,
+            Directives? directives = default,
             in Location? location = default)
         {
             Description = description;
diff --git a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
index 9c344583b..571343150 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
@@ -9,8 +9,8 @@ public InputValueDefinition(
             StringValue? description,
             in Name name,
             TypeBase type,
-            DefaultValue? defaultValue,
-            Directives? directives,
+            DefaultValue? defaultValue = default,
+            Directives? directives = default,
             in Location? location = default)
         {
             Description = description;
diff --git a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
index 89c560ea0..a3a54810e 100644
--- a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
@@ -8,9 +8,9 @@ public sealed class ObjectDefinition : TypeDefinition
         public ObjectDefinition(
             StringValue? description,
             in Name name,
-            ImplementsInterfaces? interfaces,
-            Directives? directives,
-            FieldsDefinition? fields,
+            ImplementsInterfaces? interfaces = default,
+            Directives? directives = default,
+            FieldsDefinition? fields = default,
             in Location? location = default)
         {
             Description = description;
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs b/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
index 4dca6a8d6..5a96b7ed0 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
@@ -4,7 +4,7 @@ public sealed class TypeExtension : INode
     {
         public TypeExtension(
             TypeDefinition definition,
-            in Location? location)
+            in Location? location = default)
         {
             Definition = definition;
             Location = location;
diff --git a/src/graphql.server.links/IntrospectionSchemaBuilderExtensions.cs b/src/graphql.server.links/IntrospectionSchemaBuilderExtensions.cs
index 0dce5a26c..af37d992e 100644
--- a/src/graphql.server.links/IntrospectionSchemaBuilderExtensions.cs
+++ b/src/graphql.server.links/IntrospectionSchemaBuilderExtensions.cs
@@ -1,22 +1,20 @@
 using System;
-using Tanka.GraphQL.SchemaBuilding;
+using Tanka.GraphQL.Introspection;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class IntrospectionSchemaBuilderExtensions
 {
-    public static class IntrospectionSchemaBuilderExtensions
+    public static SchemaBuilder AddIntrospectedSchema(
+        this SchemaBuilder builder,
+        string introspectionExecutionResultJson)
     {
-        public static SchemaBuilder ImportIntrospectedSchema(
-            this SchemaBuilder builder,
-            string introspectionExecutionResultJson)
-        {
-            if (string.IsNullOrWhiteSpace(introspectionExecutionResultJson))
-                throw new ArgumentNullException(nameof(introspectionExecutionResultJson));
+        if (string.IsNullOrWhiteSpace(introspectionExecutionResultJson))
+            throw new ArgumentNullException(nameof(introspectionExecutionResultJson));
 
-            var result = IntrospectionParser.Deserialize(introspectionExecutionResultJson);
-            var reader = new IntrospectionSchemaReader(builder, result);
-            reader.Read();
+        var result = IntrospectionParser.Deserialize(introspectionExecutionResultJson);
+        builder.AddIntrospectedSchema(result.Schema);
 
-            return builder;
-        }
+        return builder;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/IntrospectionSchemaReader.cs b/src/graphql.server.links/IntrospectionSchemaReader.cs
deleted file mode 100644
index d8419f888..000000000
--- a/src/graphql.server.links/IntrospectionSchemaReader.cs
+++ /dev/null
@@ -1,306 +0,0 @@
-using System;
-using System.Collections.Concurrent;
-using System.Linq;
-using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Server.Links
-{
-    /// <summary>
-    ///     Read types from <see cref="IntrospectionResult" /> into <see cref="SchemaBuilder" />
-    /// </summary>
-    public class IntrospectionSchemaReader
-    {
-        private readonly SchemaBuilder _builder;
-
-        private readonly ConcurrentQueue<Action> _delayedActions = new ConcurrentQueue<Action>();
-        private readonly __Schema _schema;
-
-        /// <summary>
-        ///     Create reader
-        /// </summary>
-        /// <param name="builder">Write types to builder</param>
-        /// <param name="result">Introspection result to use as source</param>
-        public IntrospectionSchemaReader(SchemaBuilder builder, IntrospectionResult result)
-        {
-            _builder = builder;
-            _schema = result.Schema;
-        }
-
-        public void Read()
-        {
-            var types = _schema.Types
-                .Distinct()
-                .ToList();
-
-            var queryTypeName = _schema.QueryType?.Name;
-            var mutationTypeName = _schema.MutationType?.Name;
-            var subscriptionTypeName = _schema.SubscriptionType?.Name;
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.SCALAR))
-                Scalar(type);
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.INPUT_OBJECT))
-                InputObject(type);
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.ENUM))
-                Enum(type);
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.INTERFACE))
-                Interface(type);
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.OBJECT))
-                Object(
-                    type,
-                    type.Name == queryTypeName,
-                    type.Name == mutationTypeName,
-                    type.Name == subscriptionTypeName);
-
-            foreach (var type in types.Where(t => t.Kind == __TypeKind.UNION))
-                Union(type);
-
-            while (_delayedActions.TryDequeue(out var action))
-                action();
-        }
-
-        protected IType InputType(__Type typeReference)
-        {
-            if (typeReference.Kind == __TypeKind.NON_NULL)
-            {
-                var innerType = InputType(typeReference.OfType);
-                return innerType != null ? new NonNull(innerType) : null;
-            }
-
-            if (typeReference.Kind == __TypeKind.LIST)
-            {
-                var innerType = InputType(typeReference.OfType);
-                return innerType != null ? new List(innerType) : null;
-            }
-
-            var typeName = typeReference.Name;
-
-            // is type already known by the builder?
-            if (_builder.TryGetType<INamedType>(typeName, out var knownType))
-                return knownType;
-
-            // get the actual type
-            var typeDefinition = _schema.Types.Single(t => t.Name == typeReference.Name);
-
-            // type is not known so we need to build it
-            switch (typeDefinition.Kind)
-            {
-                case __TypeKind.SCALAR:
-                    return Scalar(typeDefinition);
-                case __TypeKind.ENUM:
-                    return Enum(typeDefinition);
-                case __TypeKind.INPUT_OBJECT:
-                    return InputObject(typeDefinition);
-            }
-
-            // we should not come here ever
-            return null;
-        }
-
-        protected IType OutputType(__Type typeReference)
-        {
-            if (typeReference.Kind == __TypeKind.NON_NULL)
-            {
-                var innerType = OutputType(typeReference.OfType);
-                return innerType != null ? new NonNull(innerType) : null;
-            }
-
-            if (typeReference.Kind == __TypeKind.LIST)
-            {
-                var innerType = OutputType(typeReference.OfType);
-                return innerType != null ? new List(innerType) : null;
-            }
-
-            var typeName = typeReference.Name;
-
-            // is type already known by the builder?
-            if (_builder.TryGetType<INamedType>(typeName, out var knownType))
-                return knownType;
-
-            // get the actual type
-            var typeDefinition = _schema.Types.Single(t => t.Name == typeReference.Name);
-
-            // type is not known so we need to build it
-            switch (typeDefinition.Kind)
-            {
-                case __TypeKind.SCALAR:
-                    return Scalar(typeDefinition);
-                case __TypeKind.ENUM:
-                    return Enum(typeDefinition);
-                case __TypeKind.OBJECT:
-                    return Object(typeDefinition);
-                case __TypeKind.INTERFACE:
-                    return Interface(typeDefinition);
-                case __TypeKind.UNION:
-                    return Union(typeDefinition);
-            }
-
-            return null;
-        }
-
-        private IType Scalar(__Type type)
-        {
-            _builder.TryGetType<ScalarType>(type.Name, out var scalar);
-            return scalar;
-        }
-
-        private EnumType Enum(__Type type)
-        {
-            if (_builder.TryGetType<EnumType>(type.Name, out var enumType))
-                return enumType;
-
-            _builder.Enum(
-                type.Name,
-                out enumType,
-                type.Description,
-                values => type.EnumValues
-                    .ForEach(v => values.Value(
-                        v.Name,
-                        v.Description,
-                        Enumerable.Empty<DirectiveInstance>(),
-                        v.DeprecationReason))
-                );
-
-            return enumType;
-        }
-
-        private InputObjectType InputObject(__Type type)
-        {
-            if (_builder.TryGetType<InputObjectType>(type.Name, out var owner))
-                return owner;
-
-            _builder.InputObject(type.Name, out owner, type.Description);
-
-            if (type.InputFields != null && type.InputFields.Any())
-                _builder.Connections(connect =>
-                {
-                    foreach (var field in type.InputFields)
-                        connect.InputField(
-                            owner,
-                            field.Name,
-                            InputType(field.Type),
-                            field.DefaultValue,
-                            field.Description);
-                });
-
-            return owner;
-        }
-
-        private InterfaceType Interface(__Type type)
-        {
-            if (_builder.TryGetType<InterfaceType>(type.Name, out var owner))
-                return owner;
-
-            _builder.Interface(type.Name, out owner, type.Description);
-            if (type.Fields != null && type.Fields.Any())
-                _delayedActions.Enqueue(() =>
-                {
-                    _builder.Connections(connect =>
-                    {
-                        foreach (var field in type.Fields)
-                        {
-                            connect.Field(
-                                owner,
-                                field.Name,
-                                OutputType(field.Type),
-                                field.Description,
-                                args: args => field.Args
-                                    .ForEach(a => args.Arg(
-                                        a.Name, 
-                                        InputType(a.Type), 
-                                        a.DefaultValue, 
-                                        a.Description
-                                        )
-                                    )
-                                );
-                        }
-                    });
-                });
-
-            return owner;
-        }
-
-        private ObjectType Object(__Type type,
-            bool isQueryType = false,
-            bool isMutationType = false,
-            bool isSubscriptionType = false)
-        {
-            if (_builder.TryGetType<ObjectType>(type.Name, out var owner))
-                return owner;
-
-            var interfaces = type.Interfaces?.Select(Interface)
-                .ToList();
-
-            if (isQueryType)
-                _builder.Query(
-                    out owner,
-                    type.Description,
-                    interfaces);
-            else if (isMutationType)
-                _builder.Mutation(
-                    out owner,
-                    type.Description,
-                    interfaces);
-            else if (isSubscriptionType)
-                _builder.Subscription(
-                    out owner,
-                    type.Description,
-                    interfaces);
-            else
-                _builder.Object(
-                    type.Name,
-                    out owner,
-                    type.Description,
-                    interfaces);
-
-            if (type.Fields != null && type.Fields.Any())
-                _delayedActions.Enqueue(() =>
-                {
-                    _builder.Connections(connect =>
-                    {
-                        foreach (var field in type.Fields)
-                        {
-                            connect.Field(
-                                owner,
-                                field.Name,
-                                OutputType(field.Type),
-                                field.Description,
-                                args: args => field.Args
-                                    .ForEach(a => args.Arg(
-                                            a.Name, 
-                                            InputType(a.Type), 
-                                            a.DefaultValue, 
-                                            a.Description
-                                        )
-                                    ));
-                        }
-                    });
-                });
-
-            return owner;
-        }
-
-        private UnionType Union(__Type type)
-        {
-            if (_builder.TryGetType<UnionType>(type.Name, out var unionType))
-                return unionType;
-
-            var possibleTypes = type.PossibleTypes?
-                .Select(possibleType => (ObjectType) OutputType(possibleType))
-                .ToArray();
-
-            _builder.Union(
-                type.Name,
-                out unionType,
-                type.Description,
-                possibleTypes: possibleTypes);
-
-            return unionType;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.server.links/LinkingSchemaBuilderExtensions.cs b/src/graphql.server.links/LinkingSchemaBuilderExtensions.cs
index a7f407e0a..9dc9693f8 100644
--- a/src/graphql.server.links/LinkingSchemaBuilderExtensions.cs
+++ b/src/graphql.server.links/LinkingSchemaBuilderExtensions.cs
@@ -1,65 +1,60 @@
 using System;
 using System.Linq;
-using System.Text;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class LinkingSchemaBuilderExtensions
 {
-    public static class LinkingSchemaBuilderExtensions
+    private static readonly JsonSerializerOptions _jsonOptions = new()
     {
-        private static JsonSerializerOptions _jsonOptions = new JsonSerializerOptions()
-        {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-            Converters =
-            {
-                new ObjectDictionaryConverter(),
-            }
-        };
-
-        /// <summary>
-        ///     Execute <see cref="Introspect.DefaultQuery" /> on link
-        ///     and import the schema
-        /// </summary>
-        /// <param name="builder"></param>
-        /// <param name="link">Execution link</param>
-        /// <param name="cancellationToken"></param>
-        /// <returns></returns>
-        public static async Task<SchemaBuilder> ImportIntrospectedSchema(
-            this SchemaBuilder builder,
-            ExecutionResultLink link,
-            CancellationToken cancellationToken = default)
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        Converters =
         {
-            if (link == null) throw new ArgumentNullException(nameof(link));
-
-            var channel = await link(
-                Parser.ParseDocument(Introspect.DefaultQuery),
-                null,
-                cancellationToken);
+            new ObjectDictionaryConverter()
+        }
+    };
+
+    /// <summary>
+    ///     Execute <see cref="Introspect.DefaultQuery" /> on link
+    ///     and import the schema
+    /// </summary>
+    /// <param name="builder"></param>
+    /// <param name="link">Execution link</param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    public static async Task<SchemaBuilder> ImportIntrospectedSchema(
+        this SchemaBuilder builder,
+        ExecutionResultLink link,
+        CancellationToken cancellationToken = default)
+    {
+        if (link == null) throw new ArgumentNullException(nameof(link));
 
-            if (channel == null)
-                throw new InvalidOperationException(
-                    "Failed to execute introspection query. Link returned a null channel.");
+        var channel = await link(
+            Introspect.DefaultQuery,
+            null,
+            cancellationToken);
 
-            var result = await channel.ReadAsync(cancellationToken);
-            
-            if (result == null)
-                throw new InvalidOperationException(
-                    "Failed to execute introspection query. Link channel read result is null");
+        if (channel == null)
+            throw new InvalidOperationException(
+                "Failed to execute introspection query. Link returned a null channel.");
 
-            if (result.Errors != null && result.Errors.Any())
-                throw new InvalidOperationException(
-                    "Failed to execute introspection query. " +
-                    $"Errors: {string.Join(", ", result.Errors.Select(e => e.Message))}");
+        var result = await channel.ReadAsync(cancellationToken);
 
-            var json = JsonSerializer.Serialize(result, _jsonOptions);
-            return builder.ImportIntrospectedSchema(json);
-        }
+        if (result == null)
+            throw new InvalidOperationException(
+                "Failed to execute introspection query. Link channel read result is null");
 
+        if (result.Errors != null && result.Errors.Any())
+            throw new InvalidOperationException(
+                "Failed to execute introspection query. " +
+                $"Errors: {string.Join(", ", result.Errors.Select(e => e.Message))}");
 
+        var json = JsonSerializer.Serialize(result, _jsonOptions);
+        return builder.AddIntrospectedSchema(json);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/PreExecutedResolverResult.cs b/src/graphql.server.links/PreExecutedResolverResult.cs
index 7a605e4ad..9b33693be 100644
--- a/src/graphql.server.links/PreExecutedResolverResult.cs
+++ b/src/graphql.server.links/PreExecutedResolverResult.cs
@@ -1,6 +1,8 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
 namespace Tanka.GraphQL.Server.Links
@@ -49,7 +51,7 @@ public ValueTask<object> CompleteValueAsync(IResolverContext context)
                     context.Path,
                     context.Selection);
 
-            var resolveResult = new CompleteValueResult(value, context.Field.Type);
+            var resolveResult = new CompleteValueResult(value, context.Schema.GetRequiredNamedType<ObjectDefinition>(context.Field.Type.Unwrap().Name));
             return resolveResult.CompleteValueAsync(context);
         }
     }
diff --git a/src/graphql.server.links/RemoteSchemaTools.cs b/src/graphql.server.links/RemoteSchemaTools.cs
index f204bddec..fcf03fdec 100644
--- a/src/graphql.server.links/RemoteSchemaTools.cs
+++ b/src/graphql.server.links/RemoteSchemaTools.cs
@@ -1,158 +1,103 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.SchemaBuilding;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class RemoteSchemaTools
 {
-    public static class RemoteSchemaTools
+    public static ISchema MakeRemoteExecutable(
+        SchemaBuilder builder,
+        ExecutionResultLink link,
+        Func<ExecutionResultLink, Resolver> createResolver = null,
+        Func<ExecutionResultLink, Subscriber> createSubscriber = null)
     {
-        public static ISchema MakeRemoteExecutable(
-            SchemaBuilder builder,
-            ExecutionResultLink link,
-            Func<ExecutionResultLink, Resolver> createResolver = null,
-            Func<ExecutionResultLink, Subscriber> createSubscriber = null)
-        {
-            if (createResolver == null)
-                createResolver = DefaultCreateRemoteResolver;
-
-            if (createSubscriber == null)
-                createSubscriber = DefaultCreateRemoteSubscriber;
-
-            // add remote resolver for query
-            if (builder.TryGetType<ObjectType>("Query", out var queryType))
-                builder.Connections(connections =>
-                {
-                    var fields = connections.GetFields(queryType);
-
-                    foreach (var field in fields)
-                    {
-                        var resolver = connections.GetOrAddResolver(queryType, field.Key);
-                        resolver.Run(createResolver(link));
-                    }
-                });
-
-            if (builder.TryGetType<ObjectType>("Mutation", out var mutationType))
-                builder.Connections(connections =>
-                {
-                    var fields = connections.GetFields(mutationType);
-
-                    foreach (var field in fields)
-                    {
-                        var resolver = connections.GetOrAddResolver(mutationType, field.Key);
-                        resolver.Run(createResolver(link));
-                    }
-                });
-
-            if (builder.TryGetType<ObjectType>("Subscription", out var subscriptionType))
-                builder.Connections(connections =>
-                {
-                    var fields = connections.GetFields(subscriptionType);
-
-                    foreach (var field in fields)
-                        if (!connections.TryGetSubscriber(subscriptionType, field.Key, out _))
-                        {
-                            var subscriber = connections.GetOrAddSubscriber(subscriptionType, field.Key);
-                            subscriber.Run(createSubscriber(link));
-                        }
-                });
-
-            foreach (var objectType in builder.GetTypes<ObjectType>())
-                builder.Connections(connections =>
-                {
-                    foreach (var field in connections.GetFields(objectType))
-                        if (!connections.TryGetResolver(objectType, field.Key, out _))
-                        {
-                            var resolver = connections.GetOrAddResolver(objectType, field.Key);
-                            resolver.Run(DefaultDictionaryResolver());
-                        }
-                });
-
-            return builder.Build();
-        }
+        if (createResolver == null)
+            createResolver = DefaultCreateRemoteResolver;
+
+        if (createSubscriber == null)
+            createSubscriber = DefaultCreateRemoteSubscriber;
 
-        public static Resolver DefaultCreateRemoteResolver(ExecutionResultLink link)
+        throw new NotImplementedException($"todo: {nameof(MakeRemoteExecutable)}");
+    }
+
+    public static Resolver DefaultCreateRemoteResolver(ExecutionResultLink link)
+    {
+        return async context =>
         {
-            return async context =>
-            {
-                var document = CreateDocument(context);
-                var variables = context.ExecutionContext.CoercedVariableValues;
-
-                var reader = await link(document, variables, CancellationToken.None);
-                while (await reader.WaitToReadAsync(CancellationToken.None))
-                    if (reader.TryRead(out var executionResult))
-                    {
-                        return new PreExecutedResolverResult(executionResult);
-                    }
-
-                throw new QueryExecutionException(
-                    "Could not get result from remote. " +
-                    "Link channel was closed before result could be read.", 
-                    context.Path,
-                    context.Selection);
-            };
-
-            ExecutableDocument CreateDocument(IResolverContext context)
-            {
-                return context.ExecutionContext.Document;
-            }
+            var document = CreateDocument(context);
+            var variables = context.ExecutionContext.CoercedVariableValues;
+
+            var reader = await link(document, variables, CancellationToken.None);
+            while (await reader.WaitToReadAsync(CancellationToken.None))
+                if (reader.TryRead(out var executionResult))
+                    return new PreExecutedResolverResult(executionResult);
+
+            throw new QueryExecutionException(
+                "Could not get result from remote. " +
+                "Link channel was closed before result could be read.",
+                context.Path,
+                context.Selection);
+        };
+
+        ExecutableDocument CreateDocument(IResolverContext context)
+        {
+            return context.ExecutionContext.Document;
         }
+    }
 
-        private static Resolver DefaultDictionaryResolver()
+    private static Resolver DefaultDictionaryResolver()
+    {
+        return context =>
         {
-            return context =>
-            {
-                object value = null;
-                if (context.ObjectValue is IDictionary<string, object> dictionary)
-                    value = dictionary[context.FieldName];
-                else if (context.ObjectValue is KeyValuePair<string, object> keyValue)
-                    value = keyValue.Value;
-                else if (context.ObjectValue is ExecutionResult er)
-                    return new ValueTask<IResolverResult>(new PreExecutedResolverResult(er));
+            object value = null;
+            if (context.ObjectValue is IDictionary<string, object> dictionary)
+                value = dictionary[context.FieldName];
+            else if (context.ObjectValue is KeyValuePair<string, object> keyValue)
+                value = keyValue.Value;
+            else if (context.ObjectValue is ExecutionResult er)
+                return new ValueTask<IResolverResult>(new PreExecutedResolverResult(er));
 
-                if (value is IDictionary<string, object>) return ResolveSync.As(value);
+            if (value is IDictionary<string, object>) return ResolveSync.As(value);
 
-                if (value is IEnumerable enumerable && !(value is string)) return ResolveSync.As(enumerable);
+            if (value is IEnumerable enumerable && !(value is string)) return ResolveSync.As(enumerable);
 
-                return ResolveSync.As(value);
-            };
-        }
+            return ResolveSync.As(value);
+        };
+    }
 
-        private static Subscriber DefaultCreateRemoteSubscriber(ExecutionResultLink link)
+    private static Subscriber DefaultCreateRemoteSubscriber(ExecutionResultLink link)
+    {
+        return async (context, unsubscribe) =>
         {
-            return async (context, unsubscribe) =>
-            {
-                var document = CreateDocument(context);
-                var variables = context.ExecutionContext.CoercedVariableValues;
+            var document = CreateDocument(context);
+            var variables = context.ExecutionContext.CoercedVariableValues;
 
-                var result = await link(document, variables, unsubscribe);
-                var stream = new EventChannel<ExecutionResult>();
+            var result = await link(document, variables, unsubscribe);
+            var stream = new EventChannel<ExecutionResult>();
 
-                var _ = Task.Run(async () =>
-                {
-                    while (await result.WaitToReadAsync(unsubscribe))
-                        if (result.TryRead(out var executionResult))
-                            await stream.WriteAsync(
-                                executionResult);
+            var _ = Task.Run(async () =>
+            {
+                while (await result.WaitToReadAsync(unsubscribe))
+                    if (result.TryRead(out var executionResult))
+                        await stream.WriteAsync(
+                            executionResult);
 
-                    await result.Completion;
-                }, unsubscribe);
+                await result.Completion;
+            }, unsubscribe);
 
-                return Resolve.Subscribe(stream, unsubscribe);
-            };
+            return Resolve.Subscribe(stream, unsubscribe);
+        };
 
-            ExecutableDocument CreateDocument(IResolverContext context)
-            {
-                return context.ExecutionContext.Document;
-            }
+        ExecutableDocument CreateDocument(IResolverContext context)
+        {
+            return context.ExecutionContext.Document;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/graphql.server.links.csproj b/src/graphql.server.links/graphql.server.links.csproj
index 39bf6e089..86e498aa9 100644
--- a/src/graphql.server.links/graphql.server.links.csproj
+++ b/src/graphql.server.links/graphql.server.links.csproj
@@ -11,8 +11,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="5.0.9" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="6.0.2" />
   </ItemGroup>
 
 </Project>
diff --git a/src/graphql.server/ServerHub.cs b/src/graphql.server/ServerHub.cs
index 44a8e18ac..30ce28b38 100644
--- a/src/graphql.server/ServerHub.cs
+++ b/src/graphql.server/ServerHub.cs
@@ -26,7 +26,7 @@ public ChannelReader<ExecutionResult> QueryAsync(
             {
                 var result = await _queryStreamService.QueryAsync(new Query()
                 {
-                    Document = Parser.ParseDocument(query.Query),
+                    Document = query.Query,
                     OperationName = query.OperationName,
                     Extensions = query.Extensions,
                     Variables = query.Variables
diff --git a/src/graphql.server/WebSockets/GraphQLWSProtocol.cs b/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
index 758f3462a..00fb67c9e 100644
--- a/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
+++ b/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
@@ -132,7 +132,7 @@ private async ValueTask HandleStartAsync(MessageContext context)
 
             using var logScope = _logger.BeginScope("Query: '{operationName}'", payload.OperationName);
 
-            var document = Parser.ParseDocument(payload.Query);
+            ExecutableDocument document = payload.Query;
             var unsubscribeSource = new CancellationTokenSource();
             var queryStream = await _queryStreamService.QueryAsync(new Query
             {
diff --git a/src/graphql.server/graphql.server.csproj b/src/graphql.server/graphql.server.csproj
index 66f0e457e..c047075db 100644
--- a/src/graphql.server/graphql.server.csproj
+++ b/src/graphql.server/graphql.server.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
-    <PackageReference Include="System.IO.Pipelines" Version="5.0.1" />
+    <PackageReference Include="System.IO.Pipelines" Version="6.0.2" />
     <PackageReference Include="System.Net.WebSockets" Version="4.3.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
   </ItemGroup>
diff --git a/src/graphql/Introspection/IntrospectionSchemaBuilderExtensions.cs b/src/graphql/Introspection/IntrospectionSchemaBuilderExtensions.cs
new file mode 100644
index 000000000..f628e4507
--- /dev/null
+++ b/src/graphql/Introspection/IntrospectionSchemaBuilderExtensions.cs
@@ -0,0 +1,185 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Tanka.GraphQL.Language;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.Introspection;
+
+public static class IntrospectionSchemaBuilderExtensions
+{
+    public static SchemaBuilder AddIntrospectedSchema(this SchemaBuilder builder, __Schema schema)
+    {
+        foreach (var schemaType in schema.Types) builder.Add(schemaType);
+
+        return builder;
+    }
+
+    public static SchemaBuilder Add(this SchemaBuilder builder, __Type type)
+    {
+        return type.Kind switch
+        {
+            __TypeKind.SCALAR => builder.AddScalarDefinition(type),
+            __TypeKind.OBJECT => builder.AddObjectDefinition(type),
+            __TypeKind.INTERFACE => builder.AddInterfaceDefinition(type),
+            __TypeKind.UNION => builder.AddUnionDefinition(type),
+            __TypeKind.ENUM => builder.AddEnumDefinition(type),
+            __TypeKind.INPUT_OBJECT => builder.AddInputObjectDefinition(type),
+            _ => throw new ArgumentOutOfRangeException(nameof(type), type.Kind, "Cannot add as schema type")
+        };
+    }
+
+    public static SchemaBuilder AddScalarDefinition(this SchemaBuilder builder, __Type type)
+    {
+        builder.AddTypeExtension(
+            new ScalarDefinition(
+                type.Description,
+                type.Name)
+        );
+        return builder;
+    }
+
+    public static SchemaBuilder AddObjectDefinition(this SchemaBuilder builder, __Type type)
+    {
+        return builder.AddTypeExtension(
+            new ObjectDefinition(
+                type.Description,
+                type.Name,
+                MapInterfaces(type.Interfaces),
+                null,
+                MapFields(type.Fields))
+        );
+    }
+
+    public static SchemaBuilder AddInterfaceDefinition(this SchemaBuilder builder, __Type type)
+    {
+        return builder.AddTypeExtension(
+            new InterfaceDefinition(
+                type.Description,
+                type.Name,
+                MapInterfaces(type.Interfaces),
+                null,
+                MapFields(type.Fields))
+        );
+    }
+
+    public static SchemaBuilder AddUnionDefinition(this SchemaBuilder builder, __Type type)
+    {
+        return builder.AddTypeExtension(
+            new UnionDefinition(
+                type.Description,
+                type.Name,
+                null,
+                MapMembers(type))
+        );
+    }
+
+    public static SchemaBuilder AddEnumDefinition(this SchemaBuilder builder, __Type type)
+    {
+        return builder.AddTypeExtension(
+            new EnumDefinition(
+                type.Description,
+                type.Name,
+                null,
+                MapValues(type))
+        );
+    }
+
+    public static SchemaBuilder AddInputObjectDefinition(this SchemaBuilder builder, __Type type)
+    {
+        return builder.AddTypeExtension(
+            new InputObjectDefinition(
+                type.Description,
+                type.Name,
+                null,
+                MapInputFields(type))
+        );
+    }
+
+    private static SchemaBuilder AddTypeExtension(this SchemaBuilder builder, TypeDefinition extendedType)
+    {
+        return builder.Add(new[]
+        {
+            new TypeExtension(extendedType)
+        });
+    }
+
+    private static SchemaBuilder AddTypeExtensions(this SchemaBuilder builder,
+        IEnumerable<TypeDefinition> extendedTypes)
+    {
+        foreach (var typeDefinition in extendedTypes) builder.AddTypeExtension(typeDefinition);
+
+        return builder;
+    }
+
+    private static UnionMemberTypes MapMembers(__Type type)
+    {
+        return new UnionMemberTypes(
+            type.PossibleTypes
+                .Select(m => new NamedType(m.Name))
+                .ToList());
+    }
+
+    private static EnumValuesDefinition MapValues(__Type type)
+    {
+        return new EnumValuesDefinition(
+            type.EnumValues.Select(ev => new EnumValueDefinition(
+                ev.Description,
+                new EnumValue(ev.Name),
+                null)).ToList());
+    }
+
+    private static InputFieldsDefinition MapInputFields(__Type type)
+    {
+        return new InputFieldsDefinition(
+            type.InputFields.Select(f => new InputValueDefinition(
+                f.Description,
+                f.Name,
+                MapTypeBase(f.Type),
+                MapDefaultValue(f.DefaultValue))).ToList());
+    }
+
+    private static DefaultValue MapDefaultValue(string defaultValue)
+    {
+        return new DefaultValue(Parser.Create(defaultValue).ParseValue(true));
+    }
+
+    private static ImplementsInterfaces MapInterfaces(List<__Type> typeInterfaces)
+    {
+        return new ImplementsInterfaces(
+            typeInterfaces.Select(i => new NamedType(i.Name)).ToList());
+    }
+
+    private static FieldsDefinition MapFields(List<__Field> typeFields)
+    {
+        var fields = typeFields
+            .Select(f => new FieldDefinition(
+                f.Description,
+                f.Name,
+                MapArguments(f.Args),
+                MapTypeBase(f.Type)))
+            .ToList();
+
+        return new FieldsDefinition(fields);
+    }
+
+    private static ArgumentsDefinition MapArguments(List<__InputValue> typeArgs)
+    {
+        return new ArgumentsDefinition(
+            typeArgs.Select(a => new InputValueDefinition(
+                a.Description,
+                a.Name,
+                MapTypeBase(a.Type))).ToList());
+    }
+
+    private static TypeBase MapTypeBase(__Type argType)
+    {
+        return argType.Kind switch
+        {
+            __TypeKind.NON_NULL => new NonNullType(MapTypeBase(argType.OfType)),
+            __TypeKind.LIST => new ListType(MapTypeBase(argType.OfType)),
+            _ => new NamedType(argType.Name)
+        };
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/MakeRemoteExecutableDigitransitFacts.cs b/tests/graphql.server.links.tests/MakeRemoteExecutableDigitransitFacts.cs
deleted file mode 100644
index d9ddfbf4d..000000000
--- a/tests/graphql.server.links.tests/MakeRemoteExecutableDigitransitFacts.cs
+++ /dev/null
@@ -1,259 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Reflection;
-using System.Text;
-using System.Threading.Channels;
-using System.Threading.Tasks;
-using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
-using Xunit;
-
-namespace Tanka.GraphQL.Server.Links.Tests
-{
-    public class MakeRemoteExecutableDigitransitFacts
-    {
-        private static string GetDigitransitIntrospection()
-        {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream = assembly.GetManifestResourceStream("Tanka.GraphQL.Tests.digitransit.introspection");
-            using var reader =
-                new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8);
-            return reader.ReadToEnd();
-        }
-
-        [Fact(Skip = "Digitransit returning 500 error")]
-        public async Task ExecuteRemotely()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Scalar("Long", out _, new StringConverter())
-                .Scalar("Lat", out _, new StringConverter())
-                .Scalar("Polyline", out _, new StringConverter())
-                .ImportIntrospectedSchema(GetDigitransitIntrospection());
-
-            /* When */
-            var schema = RemoteSchemaTools.MakeRemoteExecutable(
-                builder,
-                RemoteLinks.Http(
-                    "https://api.digitransit.fi/routing/v1/routers/next-hsl/index/graphql"
-                )
-            );
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"
-                    {
-                        feeds {
-                            feedId
-                        }
-                    }
-                    ")
-            });
-
-            /* Then */
-            result.ShouldMatchJson(@"
-              {
-              ""data"": {
-                ""feeds"": [
-                  {
-                    ""feedId"": ""HSL""
-                  },
-                  {
-                    ""feedId"": ""HSLlautta""
-                  }
-                ]
-              }
-            }
-            ");
-        }
-
-        [Fact(Skip = "Digitransit returning 500 error")]
-        public async Task ExecuteRemotely_with_link_graphql_error()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Scalar("Long", out _, new StringConverter())
-                .Scalar("Lat", out _, new StringConverter())
-                .Scalar("Polyline", out _, new StringConverter())
-                .ImportIntrospectedSchema(GetDigitransitIntrospection());
-
-            /* When */
-            var schema = RemoteSchemaTools.MakeRemoteExecutable(
-                builder,
-                async (document, variables, cancellationToken) =>
-                {
-                    var channel = Channel.CreateBounded<ExecutionResult>(1);
-                    var executionResult = new ExecutionResult
-                    {
-                        Errors = new List<ExecutionError>
-                        {
-                            new ExecutionError()
-                            {
-                                Message = "failed to find..."
-                                }
-                        }
-                    };
-                    await channel.Writer.WriteAsync(executionResult, cancellationToken);
-                    channel.Writer.TryComplete();
-
-                    return channel;
-                });
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"
-                    {
-                        feeds {
-                            feedId
-                        }
-                    }
-                    ")
-            });
-
-            /* Then */
-            result.ShouldMatchJson(@"
-                {
-                  ""data"": {
-                    ""feeds"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""failed to find..."",
-                      ""locations"": [
-                        {
-                          ""end"": 137,
-                          ""start"": 47
-                        }
-                      ],
-                      ""path"": [
-                        ""feeds""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""QUERYEXECUTION"",
-                        ""remoteError"": {
-                          ""data"": null,
-                          ""errors"": [
-                            {
-                              ""message"": ""failed to find...""
-                            }
-                          ],
-                          ""extensions"": null
-                        }
-                      }
-                    }
-                  ]
-                }
-            ");
-        }
-
-        [Fact(Skip = "Digitransit returning 500 error")]
-        public async Task ExecuteWithStaticDataLink()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Scalar("Long", out _, new StringConverter())
-                .Scalar("Lat", out _, new StringConverter())
-                .Scalar("Polyline", out _, new StringConverter())
-                .ImportIntrospectedSchema(GetDigitransitIntrospection());
-
-            /* When */
-            var schema = RemoteSchemaTools.MakeRemoteExecutable(
-                builder,
-                RemoteLinks.Static(new ExecutionResult
-                {
-                    Data = new Dictionary<string, object>
-                    {
-                        ["feeds"] = new Dictionary<string, object>
-                        {
-                            ["feedId"] = "123"
-                        }
-                    }
-                }));
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"
-                    {
-                        feeds {
-                            feedId
-                        }
-                    }
-                    ")
-            });
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"
-                {
-                  ""data"": {
-                    ""feeds"": [
-                      {
-                        ""feedId"": ""123""
-                      }
-                    ]
-                  }
-                }
-            ");
-        }
-
-        [Fact(Skip = "Digitransit returning 500 error")]
-        public async Task RemoteExecute_with_link_exception()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Scalar("Long", out _, new StringConverter())
-                .Scalar("Lat", out _, new StringConverter())
-                .Scalar("Polyline", out _, new StringConverter())
-                .ImportIntrospectedSchema(GetDigitransitIntrospection());
-
-            /* When */
-            var schema = RemoteSchemaTools.MakeRemoteExecutable(
-                builder,
-                (document, variables, cancellationToken) =>
-                    throw new InvalidOperationException("error"));
-
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"
-                    {
-                        feeds {
-                            feedId
-                        }
-                    }
-                    ")
-            });
-
-            /* Then */
-            result.ShouldMatchJson(@"
-                {
-                  ""data"": {
-                    ""feeds"": null
-                  },
-                  ""errors"": [
-                    {
-                      ""message"": ""error"",
-                      ""locations"": [
-                        {
-                          ""end"": 137,
-                          ""start"": 47
-                        }
-                      ],
-                      ""path"": [
-                        ""feeds""
-                      ],
-                      ""extensions"": {
-                        ""code"": ""INVALIDOPERATION""
-                      }
-                    }
-                  ]
-                }
-            ");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
index b4d97f630..5124855ed 100644
--- a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
+++ b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
@@ -2,9 +2,7 @@
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
+using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
@@ -17,7 +15,7 @@ public async Task Execute_with_StaticLink()
         {
             /* Given */
             var schemaOneBuilder = new SchemaBuilder()
-                .Sdl(
+                .Add(
                     @"
                     type User {
                         id: ID!
@@ -34,7 +32,7 @@ type Query {
                     ");
 
             var schemaTwoBuilder = new SchemaBuilder()
-                .Sdl(
+                .Add(
                     @"
                     type Address {
                         city: String!
@@ -64,9 +62,8 @@ type Query {
                     }
                 }));
 
-            var schemaTwo = SchemaTools.MakeExecutableSchema(
-                schemaTwoBuilder,
-                new ObjectTypeMap
+            var schemaTwo = await schemaTwoBuilder.Build(
+                new ResolversMap()
                 {
                     ["Address"] = new FieldResolversMap
                     {
@@ -78,15 +75,15 @@ type Query {
                     }
                 });
 
-            var schema = new SchemaBuilder()
-                .Merge(schemaOne, schemaTwo)
-                .Build();
+            var schema = await new SchemaBuilder()
+                //.Merge(schemaOne, schemaTwo)
+                .Build(new SchemaBuildOptions());
 
             /* When */
             var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
                 Schema = schema,
-                Document = Parser.ParseDocument(@"
+                Document = @"
                 {
                     userById(id: ""1"") {
                         id
@@ -95,7 +92,7 @@ type Query {
                             city
                         }
                     }
-                }")
+                }"
             });
 
             /* Then */
@@ -114,122 +111,5 @@ type Query {
                 }
                 ");
         }
-
-        [Fact(Skip = "Test is flaky. Starts failing randomly.")]
-        public async Task Subscriptions()
-        {
-            /* Given */
-            var schemaOneBuilder = new SchemaBuilder()
-                .Sdl(
-                    @"
-                    type User {
-                        id: ID!
-                        name: String!
-                    }
-
-                    type Query {
-                        userById(id: ID!): User
-                    }
-
-                    type Subscription {
-                        userAdded: User
-                    }
-
-                    schema {
-                        query: Query
-                        subscription: Subscription
-                    }
-                    ");
-
-            var schemaTwoBuilder = new SchemaBuilder()
-                .Sdl(
-                    @"
-                    type Address {
-                        city: String!
-                    }
-
-                    type User {
-                        address: Address!
-                    }
-
-                    type Query {
-
-                    }
-
-                    type Subscription {
-
-                    }
-                    "
-                );
-
-            var schemaOne = RemoteSchemaTools.MakeRemoteExecutable(
-                schemaOneBuilder,
-                RemoteLinks.Static(new ExecutionResult
-                {
-                    Data = new Dictionary<string, object>
-                    {
-                        ["userAdded"] = new Dictionary<string, object>
-                        {
-                            ["id"] = "1",
-                            ["name"] = "name"
-                        }
-                    }
-                }));
-
-            var schemaTwo = SchemaTools.MakeExecutableSchema(
-                schemaTwoBuilder,
-                new ObjectTypeMap
-                {
-                    ["Address"] = new FieldResolversMap
-                    {
-                        {"city", context => ResolveSync.As(context.ObjectValue)}
-                    },
-                    ["User"] = new FieldResolversMap
-                    {
-                        {"address", context => ResolveSync.As("Vantaa")}
-                    }
-                });
-
-            var schema = new SchemaBuilder()
-                .Merge(schemaOne, schemaTwo)
-                .Build();
-
-            var unsubscribe = new CancellationTokenSource(TimeSpan.FromSeconds(30));
-
-
-            /* When */
-            var subscriptionResult = await Executor.SubscribeAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"
-                subscription {
-                    userAdded {
-                        id
-                        name
-                        address {
-                            city
-                        }
-                    }
-                }")
-            }, unsubscribe.Token);
-
-            var result = await subscriptionResult.Source.Reader.ReadAsync(unsubscribe.Token);
-
-            /* Then */
-            result.ShouldMatchJson(
-                @"
-                {
-                  ""data"": {
-                    ""userAdded"": {
-                      ""address"": {
-                        ""city"": ""Vantaa""
-                      },
-                      ""name"": ""name"",
-                      ""id"": ""1""
-                    }
-                  }
-                }
-                ");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
index 3d369e0a4..82b9f68f5 100644
--- a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
+++ b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
@@ -18,14 +18,14 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
index 3d60ab3ea..35b565d7e 100644
--- a/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
+++ b/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
@@ -2,40 +2,42 @@
 using System.IO;
 using System.Reflection;
 using System.Text;
-using Tanka.GraphQL.SchemaBuilding;
+using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection
+namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
+
+public class DigitransitIntrospectionFacts
 {
-    public class DigitransitIntrospectionFacts
+    [Fact]
+    public async Task Read_types()
     {
-        private static string GetDigitransitIntrospection()
-        {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream = assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.digitransit.introspection");
-            using (var reader =
-                new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
-            {
-                return reader.ReadToEnd();
-            }
-        }
+        /* Given */
+        var builder = new SchemaBuilder();
+        builder.Add(@"
+scalar Long
+scalar Lat
+scalar Polyline
+");
 
-        [Fact]
-        public void Read_types()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Scalar("Long", out _, new StringConverter());
-            builder.Scalar("Lat", out _, new StringConverter());
-            builder.Scalar("Polyline", out _, new StringConverter());
+        /* When */
+        var schema = await builder.AddIntrospectedSchema(GetDigitransitIntrospection())
+            .Build(new SchemaBuildOptions());
 
-            /* When */
-            builder.ImportIntrospectedSchema(GetDigitransitIntrospection());
+        /* Then */
+        Assert.True(schema.GetNamedType("Query") is not null);
+    }
 
-            /* Then */
-            Assert.True(builder.TryGetType<ObjectType>("Query", out var query));
+    private static string GetDigitransitIntrospection()
+    {
+        var assembly = Assembly.GetExecutingAssembly();
+        var resourceStream =
+            assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.digitransit.introspection");
+        using (var reader =
+               new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
+        {
+            return reader.ReadToEnd();
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
index 8a5387ed7..c70881652 100644
--- a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
+++ b/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
@@ -2,46 +2,47 @@
 using System.IO;
 using System.Reflection;
 using System.Text;
-using Tanka.GraphQL.SchemaBuilding;
+using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection
+namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
+
+public class GitHubIntrospectionFacts
 {
-    public class GitHubIntrospectionFacts
+    [Fact]
+    public async Task Read_types()
     {
-        [Fact]
-        public void Read_types()
-        {
-            /* Given */
-            var builder = new SchemaBuilder();
-            builder.Scalar("URI", out _, new StringConverter());
-            builder.Scalar("DateTime", out _, new StringConverter());
-            builder.Scalar("Date", out _, new StringConverter());
-            builder.Scalar("HTML", out _, new StringConverter());
-            builder.Scalar("X509Certificate", out _, new StringConverter());
-            builder.Scalar("GitObjectID", out _, new StringConverter());
-            builder.Scalar("GitTimestamp", out _, new StringConverter());
-            builder.Scalar("GitSSHRemote", out _, new StringConverter());
+        /* Given */
+        var builder = new SchemaBuilder();
+        /*builder.Scalar("URI", out _, new StringConverter());
+        builder.Scalar("DateTime", out _, new StringConverter());
+        builder.Scalar("Date", out _, new StringConverter());
+        builder.Scalar("HTML", out _, new StringConverter());
+        builder.Scalar("X509Certificate", out _, new StringConverter());
+        builder.Scalar("GitObjectID", out _, new StringConverter());
+        builder.Scalar("GitTimestamp", out _, new StringConverter());
+        builder.Scalar("GitSSHRemote", out _, new StringConverter());*/
 
-            /* When */
-            builder.ImportIntrospectedSchema(GetGitHubSchema());
+        /* When */
+        var schema = await builder.AddIntrospectedSchema(GetGitHubSchema())
+            .Build(new SchemaBuildOptions());
 
-            /* Then */
-            Assert.True(builder.TryGetType<ObjectType>("Query", out var query));
-        }
+        /* Then */
+        Assert.True(schema is not null);
+    }
 
 
-        private static string GetGitHubSchema()
+    private static string GetGitHubSchema()
+    {
+        var assembly = Assembly.GetExecutingAssembly();
+        var resourceStream =
+            assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.github.introspection");
+        using (var reader =
+               new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
         {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream = assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.github.introspection");
-            using (var reader =
-                new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
-            {
-                return reader.ReadToEnd();
-            }
+            return reader.ReadToEnd();
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/introspection/IntrospectionSchemaReaderFacts.cs b/tests/graphql.server.links.tests/introspection/IntrospectionSchemaReaderFacts.cs
deleted file mode 100644
index 4e8f76914..000000000
--- a/tests/graphql.server.links.tests/introspection/IntrospectionSchemaReaderFacts.cs
+++ /dev/null
@@ -1,426 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection
-{
-    public class IntrospectionSchemaReaderFacts
-    {
-        [Fact]
-        public void Read_Enum_with_values()
-        {
-            /* Given */
-            var introspectedType = new __Type
-            {
-                Kind = __TypeKind.ENUM,
-                Name = "T",
-                EnumValues = new List<__EnumValue>
-                {
-                    new __EnumValue
-                    {
-                        Name = "VALUE1",
-                        Description = "description"
-                    }
-                }
-            };
-
-            var schema = new __Schema
-            {
-                Types = new List<__Type>
-                {
-                    introspectedType
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            Assert.True(builder.TryGetType<EnumType>(introspectedType.Name, out var type));
-            Assert.Single(type.Values, value => value.Key == "VALUE1");
-        }
-
-        [Fact]
-        public void Read_InputObjectType_with_field()
-        {
-            /* Given */
-            var type = new __Type
-            {
-                Kind = __TypeKind.INPUT_OBJECT,
-                Name = "object",
-                InputFields = new List<__InputValue>
-                {
-                    new __InputValue
-                    {
-                        Name = "field1",
-                        Type = new __Type
-                        {
-                            Kind = __TypeKind.SCALAR,
-                            Name = "Int"
-                        }
-                    }
-                }
-            };
-
-            var schema = new __Schema
-            {
-                Types = new List<__Type>
-                {
-                    type
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            builder.TryGetType<InputObjectType>(type.Name, out var inputObjectType);
-            Assert.NotNull(inputObjectType);
-            builder.Connections(connections =>
-            {
-                Assert.True(connections.TryGetInputField(inputObjectType, "field1", out var field1));
-                Assert.Equal(ScalarType.Int, field1.Type);
-            });
-        }
-
-        [Fact]
-        public void Read_InterfaceType_with_field()
-        {
-            /* Given */
-            var type = new __Type
-            {
-                Kind = __TypeKind.INTERFACE,
-                Name = "object",
-                Fields = new List<__Field>
-                {
-                    new __Field
-                    {
-                        Name = "field1",
-                        Type = new __Type
-                        {
-                            Kind = __TypeKind.SCALAR,
-                            Name = "Int"
-                        },
-                        Args = new List<__InputValue>
-                        {
-                            new __InputValue
-                            {
-                                Name = "arg1",
-                                Type = new __Type
-                                {
-                                    Kind = __TypeKind.SCALAR,
-                                    Name = "String"
-                                }
-                            }
-                        }
-                    }
-                }
-            };
-
-            var schema = new __Schema
-            {
-                Types = new List<__Type>
-                {
-                    type
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            Assert.True(builder.TryGetType<InterfaceType>(type.Name, out var interfaceType));
-
-            builder.Connections(connections =>
-            {
-                Assert.True(connections.TryGetField(interfaceType, "field1", out var field1));
-                Assert.Equal(ScalarType.Int, field1.Type);
-                Assert.Single(field1.Arguments, arg => arg.Key == "arg1"
-                                                       && ScalarType.String.Equals(arg.Value.Type));
-            });
-        }
-
-        [Fact]
-        public void Read_MutationType()
-        {
-            /* Given */
-            var mutation = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "M"
-            };
-
-            var schema = new __Schema
-            {
-                MutationType = mutation,
-                Types = new List<__Type>
-                {
-                    mutation
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            builder.TryGetType<ObjectType>("Mutation", out var mutationType);
-            Assert.NotNull(mutationType);
-        }
-
-        [Fact]
-        public void Read_ObjectType_with_field()
-        {
-            /* Given */
-            var type = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "object",
-                Fields = new List<__Field>
-                {
-                    new __Field
-                    {
-                        Name = "field1",
-                        Type = new __Type
-                        {
-                            Kind = __TypeKind.SCALAR,
-                            Name = "Int"
-                        },
-                        Args = new List<__InputValue>
-                        {
-                            new __InputValue
-                            {
-                                Name = "arg1",
-                                Type = new __Type
-                                {
-                                    Kind = __TypeKind.SCALAR,
-                                    Name = "String"
-                                }
-                            }
-                        }
-                    }
-                }
-            };
-
-            var schema = new __Schema
-            {
-                Types = new List<__Type>
-                {
-                    type
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            builder.TryGetType<ObjectType>(type.Name, out var objectType);
-            Assert.NotNull(objectType);
-            builder.Connections(connections =>
-            {
-                Assert.True(connections.TryGetField(objectType, "field1", out var field1));
-                Assert.Equal(ScalarType.Int, field1.Type);
-                Assert.Single(field1.Arguments, arg => arg.Key == "arg1"
-                                                       && ScalarType.String.Equals(arg.Value.Type));
-            });
-        }
-
-        [Fact]
-        public void Read_QueryType()
-        {
-            /* Given */
-            var query = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "Q"
-            };
-
-            var schema = new __Schema
-            {
-                QueryType = query,
-                Types = new List<__Type>
-                {
-                    query
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            builder.TryGetType<ObjectType>("Query", out var queryType);
-            Assert.NotNull(queryType);
-        }
-
-        [Fact]
-        public void Read_Scalars()
-        {
-            /* Given */
-            var types = ScalarType.Standard
-                .Select(s => s.Type)
-                .Select(scalar => new __Type
-                {
-                    Kind = __TypeKind.SCALAR,
-                    Name = scalar.Name
-                }).ToList();
-
-            var schema = new __Schema
-            {
-                Types = types
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            foreach (var scalarType in ScalarType.Standard
-                .Select(s => s.Type))
-                Assert.True(builder.TryGetType<ScalarType>(scalarType.Name, out _));
-        }
-
-        [Fact]
-        public void Read_SubscriptionType()
-        {
-            /* Given */
-            var subscription = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "S"
-            };
-
-            var schema = new __Schema
-            {
-                SubscriptionType = subscription,
-                Types = new List<__Type>
-                {
-                    subscription
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            builder.TryGetType<ObjectType>("Subscription", out var subscriptionType);
-            Assert.NotNull(subscriptionType);
-        }
-
-        [Fact]
-        public void Read_UnionType()
-        {
-            /* Given */
-            var object1 = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "object1"
-            };
-            var object2 = new __Type
-            {
-                Kind = __TypeKind.OBJECT,
-                Name = "object2"
-            };
-            var introspectedType = new __Type
-            {
-                Kind = __TypeKind.UNION,
-                Name = "U",
-                PossibleTypes = new List<__Type>
-                {
-                    object1,
-                    object2
-                }
-            };
-
-            var schema = new __Schema
-            {
-                Types = new List<__Type>
-                {
-                    object1,
-                    introspectedType,
-                    object2
-                }
-            };
-
-            var builder = new SchemaBuilder();
-            var reader = new IntrospectionSchemaReader(
-                builder,
-                new IntrospectionResult
-                {
-                    Schema = schema
-                });
-
-            /* When */
-            reader.Read();
-
-            /* Then */
-            Assert.True(builder.TryGetType<UnionType>(introspectedType.Name, out var type));
-            Assert.Single(type.PossibleTypes, possibleType => possibleType.Key == "object1");
-            Assert.Single(type.PossibleTypes, possibleType => possibleType.Key == "object2");
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.tests.host/Startup.cs b/tests/graphql.server.tests.host/Startup.cs
index 19fcbf988..b60bf7f64 100644
--- a/tests/graphql.server.tests.host/Startup.cs
+++ b/tests/graphql.server.tests.host/Startup.cs
@@ -6,9 +6,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
@@ -51,9 +48,9 @@ type Subscription {
                 ";
 
             var builder = new SchemaBuilder()
-                .Sdl(Parser.ParseTypeSystemDocument(sdl));
+                .Add(sdl);
 
-            var resolvers = new ObjectTypeMap
+            var resolvers = new ResolversMap()
             {
                 {
                     "Event", new FieldResolversMap
@@ -97,10 +94,7 @@ type Subscription {
                 }
             };
 
-            var executable = SchemaTools.MakeExecutableSchemaWithIntrospection(
-                builder,
-                resolvers,
-                resolvers);
+            var executable = builder.Build(resolvers, resolvers);
 
             services.AddSingleton(provider => eventManager);
 
diff --git a/tests/graphql.server.tests/graphql.server.tests.csproj b/tests/graphql.server.tests/graphql.server.tests.csproj
index f2d929310..d7289dcc8 100644
--- a/tests/graphql.server.tests/graphql.server.tests.csproj
+++ b/tests/graphql.server.tests/graphql.server.tests.csproj
@@ -8,19 +8,19 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
-    <PackageReference Include="NSubstitute" Version="4.2.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="NSubstitute" Version="4.3.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="5.0.9" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.2" />
   </ItemGroup>
 
   <ItemGroup>

From 184624e482b6508c41bf2492ce903ecd8b66b7f4 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 19:20:40 +0200
Subject: [PATCH 10/26] Federation extension

---
 .../AnyScalarConverter.cs                     |  35 +-
 .../DictionaryReferenceResolversMap.cs        |  11 +-
 .../Federation.cs                             | 332 ++++++++++--------
 .../FederationSchemaBuilderExtensions.cs      |  23 --
 .../FederationTypes.cs                        |  61 ++--
 .../FieldSetScalarConverter.cs                |  59 ++--
 ...GraphQL.Extensions.ApolloFederation.csproj |   1 +
 .../IReferenceResolversMap.cs                 |   9 +-
 .../ResolveReference.cs                       |  41 ++-
 .../Extensions/ObjectDefinitionExtensions.cs  |  12 +
 .../Extensions/TypeDefinitionExtensions.cs    |  28 ++
 .../Nodes/TypeSystem/EnumDefinition.cs        |   2 +-
 .../Nodes/TypeSystem/InputObjectDefinition.cs |   2 +-
 .../Nodes/TypeSystem/InterfaceDefinition.cs   |   2 +-
 .../Nodes/TypeSystem/ObjectDefinition.cs      |   2 +-
 .../Nodes/TypeSystem/ScalarDefinition.cs      |   2 +-
 .../Nodes/TypeSystem/TypeDefinition.cs        |   3 +
 .../Nodes/TypeSystem/UnionDefinition.cs       |   2 +-
 .../Directives/DirectiveTypeVisitorContext.cs |   5 +
 src/graphql/Directives/DirectiveVisitor.cs    |   2 +
 src/graphql/TypeSystem/SchemaBuildOptions.cs  |  32 +-
 src/graphql/TypeSystem/SchemaBuilder.cs       | 116 +++---
 .../FederationFacts.cs                        |   8 +-
 .../FederationSchemaBuilderFacts.cs           | 111 +++---
 .../SchemaFactory.cs                          | 299 ++++++++--------
 25 files changed, 638 insertions(+), 562 deletions(-)
 delete mode 100644 src/GraphQL.Extensions.ApolloFederation/FederationSchemaBuilderExtensions.cs
 create mode 100644 src/graphql/Directives/DirectiveTypeVisitorContext.cs

diff --git a/src/GraphQL.Extensions.ApolloFederation/AnyScalarConverter.cs b/src/GraphQL.Extensions.ApolloFederation/AnyScalarConverter.cs
index 45a8c92ac..583c3163f 100644
--- a/src/GraphQL.Extensions.ApolloFederation/AnyScalarConverter.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/AnyScalarConverter.cs
@@ -1,28 +1,27 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
+
+public class AnyScalarConverter : IValueConverter
 {
-    public class AnyScalarConverter : IValueConverter
+    public object? Serialize(object value)
     {
-        public object? Serialize(object value)
-        {
-            return value;
-        }
+        return value;
+    }
 
-        public ValueBase SerializeLiteral(object? value)
-        {
-            return new NullValue();
-        }
+    public ValueBase SerializeLiteral(object? value)
+    {
+        return new NullValue();
+    }
 
-        public object? ParseValue(object input)
-        {
-            return input;
-        }
+    public object? ParseValue(object input)
+    {
+        return input;
+    }
 
-        public object? ParseLiteral(ValueBase input)
-        {
-            return input;
-        }
+    public object? ParseLiteral(ValueBase input)
+    {
+        return input;
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/DictionaryReferenceResolversMap.cs b/src/GraphQL.Extensions.ApolloFederation/DictionaryReferenceResolversMap.cs
index dc12c5a96..af1c95b92 100644
--- a/src/GraphQL.Extensions.ApolloFederation/DictionaryReferenceResolversMap.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/DictionaryReferenceResolversMap.cs
@@ -1,12 +1,11 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
+
+public class DictionaryReferenceResolversMap : Dictionary<string, ResolveReference>, IReferenceResolversMap
 {
-    public class DictionaryReferenceResolversMap : Dictionary<string, ResolveReference>, IReferenceResolversMap
+    public bool TryGetReferenceResolver(string type, out ResolveReference resolveReference)
     {
-        public bool TryGetReferenceResolver(string type, out ResolveReference resolveReference)
-        {
-            return TryGetValue(type, out resolveReference);
-        }
+        return TryGetValue(type, out resolveReference);
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/Federation.cs b/src/GraphQL.Extensions.ApolloFederation/Federation.cs
index 735469c8b..30980f46d 100644
--- a/src/GraphQL.Extensions.ApolloFederation/Federation.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/Federation.cs
@@ -1,184 +1,218 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Tanka.GraphQL.Language;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
+
+public record FederatedSchemaBuildOptions
 {
-    public static class Federation
+    public SchemaBuildOptions? SchemaBuildOptions { get; init; }
+
+    public IReferenceResolversMap? ReferenceResolvers { get; init; }
+}
+
+public static class Federation
+{
+    private static readonly IReadOnlyList<string> IgnoredTypeNames = new List<string>
     {
-        private static readonly IReadOnlyList<string> IgnoredTypeNames = new List<string>
-        {
-            "external",
-            "requires",
-            "provides",
-            "key",
-            "extends",
-            "_Service",
-            "_Entity",
-            "_Any",
-            "_FieldSet"
-        };
+        "external",
+        "requires",
+        "provides",
+        "key",
+        "extends",
+        "_Service",
+        "_Entity",
+        "_Any",
+        "_FieldSet"
+    };
+
+    private static IReadOnlyDictionary<string, IValueConverter> NoConverters { get; } =
+        new Dictionary<string, IValueConverter>(0);
+
+    private static object Service { get; } = new ();
+
+    public static Task<ISchema> BuildSubgraph(this SchemaBuilder builder, FederatedSchemaBuildOptions options)
+    {
+        var schemaBuildOptions = options.SchemaBuildOptions ?? new SchemaBuildOptions();
 
-        public static SchemaBuilder ServiceFrom(
-            ISchema schema,
-            IReferenceResolversMap referenceResolvers)
+        // query types entity types from builder (note that anything added after this wont' show up
+        var entities = builder.QueryTypeDefinitions(type => type.HasDirective("key"), new SchemaBuildOptions
         {
-            var builder = new SchemaBuilder()
-                .Import(schema);
+            BuildTypesFromOrphanedExtensions = true
+        }).ToList();
 
-            builder.Union("_Entity", out var entityUnion, possibleTypes: GetEntities(builder));
-            builder.Object("_Service", out var serviceObject);
+        // add federation types
+        builder.Add(FederationTypes.TypeSystem);
 
-            if (!builder.TryGetQuery(out var queryObject))
-                builder.Query(out queryObject);
+        var resolvers = new ResolversMap(
+            schemaBuildOptions.Resolvers ?? ResolversMap.None,
+            schemaBuildOptions.Subscribers);
 
-            var entitiesResolver = CreateEntitiesResolver(referenceResolvers);
-            builder.Connections(connect =>
+        // If no types are annotated with the key directive,
+        // then the _Entity union and Query._entities field should be removed from the schema.
+        if (entities.Any())
+        {
+            builder.Add(new TypeExtension(
+                new UnionDefinition(
+                    null,
+                    "_Entity",
+                    null,
+                    new UnionMemberTypes(entities.Select(e => new NamedType(e.Name)).ToList()))
+            ));
+
+            builder.Add(new TypeExtension(
+                new ObjectDefinition(null,
+                    "Query",
+                    fields: new FieldsDefinition(
+                        new FieldDefinition[]
+                        {
+                            "_entities(representations: [_Any!]!): [_Entity]!",
+                            "_service: _Service!"
+                        }))));
+
+            resolvers += new ResolversMap()
             {
-                connect.Field(
-                    queryObject,
-                    "_entities",
-                    new NonNull(new List(entityUnion)),
-                    args: args =>
-                    {
-                        args.Arg(
-                            "representations",
-                            new NonNull(new List(new NonNull(FederationTypes._Any))),
-                            null,
-                            "Representations");
-                    },
-                    resolve: resolve => resolve.Run(entitiesResolver));
-
-                connect.Field(
-                    queryObject,
-                    "_service",
-                    new NonNull(serviceObject),
-                    "Federation",
-                    resolve => resolve.Run(context => ResolveSync.As(new object())));
-
-                connect.Field(
-                    serviceObject,
-                    "sdl",
-                    ScalarType.NonNullString,
-                    "SDL",
-                    resolve => resolve.Run(CreateSdlResolver()));
-            });
-
-            return builder;
-        }
+                {"Query", "_service", _ =>  ResolveSync.As(Service)},
+                {"Query", "_entities", CreateEntitiesResolver(options.ReferenceResolvers ?? new DictionaryReferenceResolversMap())},
 
-        private static ObjectType[] GetEntities(SchemaBuilder builder)
-        {
-            return builder.GetTypes<ObjectType>()
-                .Where(obj => obj.HasDirective("key"))
-                .ToArray();
+                {"_Service", "sdl", CreateSdlResolver()}
+            };
         }
 
-        private static Resolver CreateSdlResolver()
+
+        schemaBuildOptions = schemaBuildOptions with
         {
-            return context =>
+            ValueConverters = new Dictionary<string, IValueConverter>(schemaBuildOptions.ValueConverters ?? NoConverters)
             {
-                var options = new SchemaPrinterOptions(context.ExecutionContext.Schema);
-                var defaultShouldPrintType = options.ShouldPrintType;
-                options.ShouldPrintType = type =>
-                {
-                    if (type is DirectiveType directiveType)
-                        if (IgnoredTypeNames.Contains(directiveType.Name))
-                            return false;
-
-                    if (type is INamedType namedType)
-                        if (IgnoredTypeNames.Contains(namedType.Name))
-                            return false;
+                { "_Any", new AnyScalarConverter() },
+                { "_FieldSet", new FieldSetScalarConverter() }
+            },
+            Resolvers = resolvers,
+            Subscribers = resolvers,
+            BuildTypesFromOrphanedExtensions = true
+        };      
+
+        return builder.Build(schemaBuildOptions);
+    }
 
-                    if (type is ComplexType complexType)
-                    {
-                        var fields = context.ExecutionContext.Schema
-                            .GetFields(complexType.Name);
+    private static IReadOnlyList<NamedType> GetEntities(ISchema schema)
+    {
+        return schema.QueryTypes<ObjectDefinition>()
+            .Where(obj => obj.HasDirective("key"))
+            .Select(entity => new NamedType(entity.Name, null))
+            .ToList();
+    }
 
-                        if (!fields.Any())
-                            return false;
-                    }
+    private static Resolver CreateSdlResolver()
+    {
+        return context =>
+        {
+            /*var options = new SchemaPrinterOptions(context.ExecutionContext.Schema);
+            var defaultShouldPrintType = options.ShouldPrintType;
+            options.ShouldPrintType = type =>
+            {
+                if (type is DirectiveType directiveType)
+                    if (IgnoredTypeNames.Contains(directiveType.Name))
+                        return false;
 
-                    return defaultShouldPrintType(type);
-                };
+                if (type is INamedType namedType)
+                    if (IgnoredTypeNames.Contains(namedType.Name))
+                        return false;
 
-                var defaultShouldPrintField = options.ShouldPrintField;
-                options.ShouldPrintField = (name, field) =>
+                if (type is ComplexType complexType)
                 {
-                    if (name == "_service")
-                        return false;
+                    var fields = context.ExecutionContext.Schema
+                        .GetFields(complexType.Name);
 
-                    if (name == "_entities")
+                    if (!fields.Any())
                         return false;
+                }
 
-                    return defaultShouldPrintField(name, field);
-                };
-
-                var document = SchemaPrinter.Print(options);
-                var sdl = Printer.Print(document);
-                return ResolveSync.As(sdl);
+                return defaultShouldPrintType(type);
             };
-        }
 
-        private static Resolver CreateEntitiesResolver(
-            IReferenceResolversMap referenceResolversMap)
-        {
-            return async context =>
+            var defaultShouldPrintField = options.ShouldPrintField;
+            options.ShouldPrintField = (name, field) =>
             {
-                var representations = context
-                    .GetArgument<IReadOnlyCollection<object>>("representations");
+                if (name == "_service")
+                    return false;
 
-                var result = new List<object>();
-                var types = new Dictionary<object, INamedType>();
-                foreach (var representationObj in representations)
-                {
-                    var representation = (IReadOnlyDictionary<string, object>) representationObj;
-                    if (!representation.TryGetValue("__typename", out var typenameObj))
-                        throw new QueryExecutionException(
-                            "Typename not found for representation",
-                            context.Path,
-                            context.Selection);
-
-                    var typename = typenameObj.ToString() ??
-                                   throw new QueryExecutionException(
-                                       "Representation is missing __typename",
-                                       context.Path,
-                                       context.Selection);
-
-                    var objectType = context
-                        .ExecutionContext
-                        .Schema
-                        .GetNamedType<ObjectType>(typename);
-
-                    if (objectType == null)
-                        throw new QueryExecutionException(
-                            $"Could not resolve type form __typename: '{typename}'",
-                            context.Path,
-                            context.Selection);
-
-                    if (!referenceResolversMap.TryGetReferenceResolver(typename, out var resolveReference))
-                        throw new QueryExecutionException(
-                            $"Could not find reference resolvers for  __typename: '{typename}'",
-                            context.Path,
-                            context.Selection);
-
-                    var (namedType, reference) = await resolveReference(
-                        context,
-                        objectType,
-                        representation);
-
-                    result.Add(reference);
-
-                    // this will fail if for same type there's multiple named types
-                    types.TryAdd(reference, namedType);
-                }
+                if (name == "_entities")
+                    return false;
 
-                return Resolve.As(result, reference => types[reference]);
+                return defaultShouldPrintField(name, field);
             };
-        }
+
+            var document = SchemaPrinter.Print(options);*/
+
+            //todo: handle ignored types
+            var schemaDefinition = context.Schema.ToTypeSystem();
+            var sdl = Printer.Print(schemaDefinition);
+            return ResolveSync.As(sdl);
+        };
+    }
+
+    private static Resolver CreateEntitiesResolver(
+        IReferenceResolversMap referenceResolversMap)
+    {
+        return async context =>
+        {
+            var representations = context
+                .GetArgument<IReadOnlyCollection<object>>("representations");
+
+            var result = new List<object>();
+            var types = new Dictionary<object, TypeDefinition>();
+            foreach (var representationObj in representations)
+            {
+                var representation = (IReadOnlyDictionary<string, object>)representationObj;
+                if (!representation.TryGetValue("__typename", out var typenameObj))
+                    throw new QueryExecutionException(
+                        "Typename not found for representation",
+                        context.Path,
+                        context.Selection);
+
+                var typename = typenameObj.ToString() ??
+                               throw new QueryExecutionException(
+                                   "Representation is missing __typename",
+                                   context.Path,
+                                   context.Selection);
+
+                var objectType = context
+                    .ExecutionContext
+                    .Schema
+                    .GetNamedType(typename) as ObjectDefinition;
+
+                if (objectType == null)
+                    throw new QueryExecutionException(
+                        $"Could not resolve type from __typename: '{typename}'",
+                        context.Path,
+                        context.Selection);
+
+                if (!referenceResolversMap.TryGetReferenceResolver(typename, out var resolveReference))
+                    throw new QueryExecutionException(
+                        $"Could not find reference resolvers for  __typename: '{typename}'",
+                        context.Path,
+                        context.Selection);
+
+                var (namedType, reference) = await resolveReference(
+                    context,
+                    objectType,
+                    representation);
+
+                result.Add(reference);
+
+                // this will fail if for same type there's multiple named types
+                types.TryAdd(reference, namedType);
+            }
+
+
+            return Resolve.As(result, (_, reference) => types[reference]);
+        };
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/FederationSchemaBuilderExtensions.cs b/src/GraphQL.Extensions.ApolloFederation/FederationSchemaBuilderExtensions.cs
deleted file mode 100644
index 38d0384f9..000000000
--- a/src/GraphQL.Extensions.ApolloFederation/FederationSchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-using Tanka.GraphQL.SchemaBuilding;
-
-namespace Tanka.GraphQL.Extensions.ApolloFederation
-{
-    public static class FederationSchemaBuilderExtensions
-    {
-        public static SchemaBuilder AddFederationDirectives(this SchemaBuilder builder)
-        {
-            builder.Include(FederationTypes._FieldSet);
-            builder.Include(FederationTypes._FieldSet.Name, new FieldSetScalarConverter());
-            builder.Include(FederationTypes._Any);
-            builder.Include(FederationTypes._Any.Name, new AnyScalarConverter());
-
-            builder.Include(FederationTypes.External);
-            builder.Include(FederationTypes.Requires);
-            builder.Include(FederationTypes.Provides);
-            builder.Include(FederationTypes.Key);
-            builder.Include(FederationTypes.Extends);
-
-            return builder;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/FederationTypes.cs b/src/GraphQL.Extensions.ApolloFederation/FederationTypes.cs
index 8e7694f9f..089ec8b64 100644
--- a/src/GraphQL.Extensions.ApolloFederation/FederationTypes.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/FederationTypes.cs
@@ -1,46 +1,31 @@
-using System.Diagnostics.CodeAnalysis;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
-{
-    public static class FederationTypes
-    {
-        [SuppressMessage("ReSharper", "InconsistentNaming")]
-        public static readonly ScalarType _Any = new ScalarType("_Any");
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
 
-        [SuppressMessage("ReSharper", "InconsistentNaming")]
-        public static readonly ScalarType _FieldSet = new ScalarType("_FieldSet");
+public static class FederationTypes
+{
+    public static TypeSystemDocument TypeSystem =>
+        @"
+scalar _Any
+scalar _FieldSet
 
-        public static readonly DirectiveType External = new DirectiveType(
-            "external",
-            new[] {DirectiveLocation.FIELD_DEFINITION});
+# a union of all types that use the @key directive
+union _Entity
 
-        public static readonly DirectiveType Requires = new DirectiveType(
-            "requires",
-            new[] {DirectiveLocation.FIELD_DEFINITION},
-            new Args
-            {
-                {"fields", _FieldSet, null, "Fields"}
-            });
+type _Service {
+  sdl: String
+}
 
-        public static readonly DirectiveType Provides = new DirectiveType(
-            "provides",
-            new[] {DirectiveLocation.FIELD_DEFINITION},
-            new Args
-            {
-                {"fields", _FieldSet, null, "Fields"}
-            });
+extend type Query {
+  # we add this dynamically _entities(representations: [_Any!]!): [_Entity]!
+  # see above _service: _Service!
+}
 
-        public static readonly DirectiveType Key = new DirectiveType(
-            "key",
-            new[] {DirectiveLocation.FIELD_DEFINITION},
-            new Args
-            {
-                {"fields", _FieldSet, null, "fields"}
-            });
+directive @external on FIELD_DEFINITION
+directive @requires(fields: _FieldSet!) on FIELD_DEFINITION
+directive @provides(fields: _FieldSet!) on FIELD_DEFINITION
+directive @key(fields: _FieldSet!) repeatable on OBJECT | INTERFACE
 
-        public static readonly DirectiveType Extends = new DirectiveType(
-            "extends",
-            new[] {DirectiveLocation.OBJECT, DirectiveLocation.INTERFACE});
-    }
+directive @extends on OBJECT | INTERFACE
+";
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/FieldSetScalarConverter.cs b/src/GraphQL.Extensions.ApolloFederation/FieldSetScalarConverter.cs
index ba89f07a3..dc5d3b6a5 100644
--- a/src/GraphQL.Extensions.ApolloFederation/FieldSetScalarConverter.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/FieldSetScalarConverter.cs
@@ -3,44 +3,43 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
+
+//todo: should this parse as SelectionSet?
+public class FieldSetScalarConverter : IValueConverter
 {
-    //todo: should this parse as SelectionSet?
-    public class FieldSetScalarConverter : IValueConverter
+    public object? Serialize(object value)
     {
-        public object? Serialize(object value)
-        {
-            return value as string;
-        }
+        return value as string;
+    }
 
-        public ValueBase SerializeLiteral(object? value)
-        {
-            if (value == null)
-                return new NullValue();
+    public ValueBase SerializeLiteral(object? value)
+    {
+        if (value == null)
+            return new NullValue();
 
-            if (!(value is string fields))
-                return new NullValue();
+        if (!(value is string fields))
+            return new NullValue();
 
-            var bytes = Encoding.UTF8.GetBytes(fields);
-            return new StringValue(bytes);
-        }
+        var bytes = Encoding.UTF8.GetBytes(fields);
+        return new StringValue(bytes);
+    }
 
-        public object? ParseValue(object? input)
-        {
-            var fields = input as string;
-            return fields;
-        }
+    public object? ParseValue(object? input)
+    {
+        var fields = input as string;
+        return fields;
+    }
 
-        public object? ParseLiteral(ValueBase input)
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.StringValue)
         {
-            if (input.Kind == NodeKind.StringValue)
-            {
-                var str = ((StringValue) input).ToString();
-                return ParseValue(str);
-            }
-
-            throw new FormatException(
-                $"Invalid literal value for FieldSet scalar. Expected StringValue but got {input.Kind}");
+            var str = ((StringValue)input).ToString();
+            return ParseValue(str);
         }
+
+        throw new FormatException(
+            $"Invalid literal value for FieldSet scalar. Expected StringValue but got {input.Kind}");
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj b/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
index 75e698e34..4cbd1efad 100644
--- a/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
+++ b/src/GraphQL.Extensions.ApolloFederation/GraphQL.Extensions.ApolloFederation.csproj
@@ -4,6 +4,7 @@
     <TargetFrameworks>net6.0</TargetFrameworks>
     <AssemblyName>Tanka.GraphQL.Extensions.ApolloFederation</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Extensions.ApolloFederation</RootNamespace>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/GraphQL.Extensions.ApolloFederation/IReferenceResolversMap.cs b/src/GraphQL.Extensions.ApolloFederation/IReferenceResolversMap.cs
index 98fb55568..386a666eb 100644
--- a/src/GraphQL.Extensions.ApolloFederation/IReferenceResolversMap.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/IReferenceResolversMap.cs
@@ -1,7 +1,6 @@
-namespace Tanka.GraphQL.Extensions.ApolloFederation
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
+
+public interface IReferenceResolversMap
 {
-    public interface IReferenceResolversMap
-    {
-        bool TryGetReferenceResolver(string type, out ResolveReference resolveReference);
-    }
+    bool TryGetReferenceResolver(string type, out ResolveReference resolveReference);
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/ResolveReference.cs b/src/GraphQL.Extensions.ApolloFederation/ResolveReference.cs
index 93f2ba654..d73094daf 100644
--- a/src/GraphQL.Extensions.ApolloFederation/ResolveReference.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/ResolveReference.cs
@@ -1,31 +1,30 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation
-{
-    public delegate ValueTask<ResolveReferenceResult> ResolveReference(
-        IResolverContext context,
-        INamedType type,
-        IReadOnlyDictionary<string, object> representation);
+namespace Tanka.GraphQL.Extensions.ApolloFederation;
 
-    public readonly struct ResolveReferenceResult
-    {
-        public INamedType Type { get; }
+public delegate ValueTask<ResolveReferenceResult> ResolveReference(
+    IResolverContext context,
+    TypeDefinition type,
+    IReadOnlyDictionary<string, object> representation);
 
-        public object Reference { get; }
+public readonly struct ResolveReferenceResult
+{
+    public TypeDefinition Type { get; }
 
-        public ResolveReferenceResult(INamedType type, object reference)
-        {
-            Type = type;
-            Reference = reference;
-        }
+    public object Reference { get; }
 
-        public void Deconstruct(out INamedType type, out object reference)
-        {
-            type = Type;
-            reference = Reference;
-        }
+    public ResolveReferenceResult(TypeDefinition type, object reference)
+    {
+        Type = type;
+        Reference = reference;
+    }
+
+    public void Deconstruct(out TypeDefinition type, out object reference)
+    {
+        type = Type;
+        reference = Reference;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
index 0d9da8b50..aba797ebe 100644
--- a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
@@ -43,6 +43,18 @@ public static bool TryGetDirective(
             return definition.Directives.TryGet(directiveName, out directive);
         }
 
+        public static bool HasDirective(
+            this ObjectDefinition definition,
+            Name directiveName)
+        {
+            if (definition.Directives is null)
+            {
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out _);
+        }
+
         public static ObjectDefinition WithDescription(this ObjectDefinition definition, 
             in StringValue? description)
         {
diff --git a/src/graphql.language/Extensions/TypeDefinitionExtensions.cs b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
index 06dc2e2a3..82c78b4aa 100644
--- a/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
@@ -1,10 +1,38 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
 namespace Tanka.GraphQL.Language
 {
     public static class TypeDefinitionExtensions
     {
+        public static bool HasDirective(
+            this TypeDefinition definition,
+            Name directiveName)
+        {
+            if (definition.Directives is null)
+            {
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out _);
+        }
+
+        public static bool TryGetDirective(
+            this TypeDefinition definition,
+            Name directiveName,
+            [NotNullWhen(true)] out Directive? directive)
+        {
+            if (definition.Directives is null)
+            {
+                directive = null;
+                return false;
+            }
+
+            return definition.Directives.TryGet(directiveName, out directive);
+        }
+
         public static TypeDefinition Extend(
             this TypeDefinition typeDefinition,
             params TypeExtension[] typeExtensions)
diff --git a/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs b/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
index 353c64f71..fd460cb8e 100644
--- a/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
@@ -20,7 +20,7 @@ public EnumDefinition(
         }
 
         public StringValue? Description { get; }
-        public Directives? Directives { get; }
+        public override Directives? Directives { get; }
         public override Name Name { get; }
         public EnumValuesDefinition? Values { get; }
         public override NodeKind Kind => NodeKind.EnumDefinition;
diff --git a/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
index a02c9b977..be02aaedc 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
@@ -22,7 +22,7 @@ public InputObjectDefinition(
 
         public StringValue? Description { get; }
         public override Name Name { get; }
-        public Directives? Directives { get; }
+        public override Directives? Directives { get; }
         public InputFieldsDefinition? Fields { get; }
         public override Location? Location { get; }
 
diff --git a/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
index e1e8255c4..115eee0ae 100644
--- a/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
@@ -26,7 +26,7 @@ public InterfaceDefinition(
         public StringValue? Description { get; }
         public override Name Name { get; }
         public ImplementsInterfaces? Interfaces { get; }
-        public Directives? Directives { get; }
+        public override Directives? Directives { get; }
         public FieldsDefinition? Fields { get; }
         public override Location? Location { get; }
 
diff --git a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
index a3a54810e..3354d750a 100644
--- a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
@@ -26,7 +26,7 @@ public ObjectDefinition(
         public StringValue? Description { get; }
         public override Name Name { get; }
         public ImplementsInterfaces? Interfaces { get; }
-        public Directives? Directives { get; }
+        public override Directives? Directives { get; }
         public FieldsDefinition? Fields { get; }
         public override Location? Location { get; }
 
diff --git a/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
index e4f8b2558..ae8767e54 100644
--- a/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ScalarDefinition.cs
@@ -18,7 +18,7 @@ public ScalarDefinition(
     }
 
     public StringValue? Description { get; }
-    public Directives? Directives { get; }
+    public override Directives? Directives { get; }
     public override NodeKind Kind => NodeKind.ScalarDefinition;
     public override Location? Location { get; }
     public override Name Name { get; }
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
index 661bc0bb4..bf9a372df 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
@@ -12,6 +12,9 @@ public abstract class TypeDefinition : INode, IEquatable<TypeDefinition>
         public abstract NodeKind Kind { get; }
         public abstract Location? Location { get; }
 
+        public abstract Directives? Directives { get; }
+        
+
         public static implicit operator TypeDefinition(string value)
         {
             var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
diff --git a/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs b/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
index 6162e6fb8..8a42bb708 100644
--- a/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
@@ -24,7 +24,7 @@ public UnionDefinition(
 
         public override Name Name { get; }
 
-        public Directives? Directives { get; }
+        public override Directives? Directives { get; }
 
         public UnionMemberTypes? Members { get; }
 
diff --git a/src/graphql/Directives/DirectiveTypeVisitorContext.cs b/src/graphql/Directives/DirectiveTypeVisitorContext.cs
new file mode 100644
index 000000000..38719ab45
--- /dev/null
+++ b/src/graphql/Directives/DirectiveTypeVisitorContext.cs
@@ -0,0 +1,5 @@
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+namespace Tanka.GraphQL.Directives;
+
+public record DirectiveTypeVisitorContext(TypeDefinition TypeDefinition);
\ No newline at end of file
diff --git a/src/graphql/Directives/DirectiveVisitor.cs b/src/graphql/Directives/DirectiveVisitor.cs
index ae1c8792c..1aa08e7c8 100644
--- a/src/graphql/Directives/DirectiveVisitor.cs
+++ b/src/graphql/Directives/DirectiveVisitor.cs
@@ -3,5 +3,7 @@
     public class DirectiveVisitor
     {
         public DirectiveNodeVisitor<DirectiveFieldVisitorContext>? FieldDefinition { get; set; }
+
+        public DirectiveNodeVisitor<DirectiveTypeVisitorContext>? TypeDefinition { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuildOptions.cs b/src/graphql/TypeSystem/SchemaBuildOptions.cs
index 779f8f1d4..f946ca5dd 100644
--- a/src/graphql/TypeSystem/SchemaBuildOptions.cs
+++ b/src/graphql/TypeSystem/SchemaBuildOptions.cs
@@ -8,12 +8,33 @@
 
 namespace Tanka.GraphQL.TypeSystem;
 
-public class SchemaBuildOptions
+public record SchemaBuildOptions
 {
+    public SchemaBuildOptions()
+    {
+    }
+
+    public SchemaBuildOptions(IResolverMap resolvers, ISubscriberMap? subscribers = null)
+    {
+        Resolvers = resolvers;
+        Subscribers = subscribers;
+    }
+
     public bool BuildTypesFromOrphanedExtensions { get; set; } = false;
 
     public IReadOnlyDictionary<string, CreateDirectiveVisitor>? DirectiveVisitorFactories { get; set; }
 
+    public IReadOnlyList<IImportProvider> ImportProviders { get; set; } = new List<IImportProvider>
+    {
+        new EmbeddedResourceImportProvider(),
+        new FileSystemImportProvider(AppContext.BaseDirectory),
+        new ExtensionsImportProvider()
+    };
+
+    public bool IncludeBuiltInTypes { get; set; } = true;
+
+    public bool IncludeIntrospection { get; set; } = true;
+
     public string? OverrideMutationRootName { get; set; }
 
     public string? OverrideQueryRootName { get; set; }
@@ -33,13 +54,4 @@ public class SchemaBuildOptions
             [Scalars.Boolean.Name] = new BooleanConverter(),
             [Scalars.ID.Name] = new IdConverter()
         };
-
-    public IReadOnlyList<IImportProvider> ImportProviders { get; set; } = new List<IImportProvider>()
-    {
-        new EmbeddedResourceImportProvider(),
-        new FileSystemImportProvider(AppContext.BaseDirectory),
-        new ExtensionsImportProvider()
-    };
-
-    public bool IncludeIntrospection { get; set; } = true;
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuilder.cs b/src/graphql/TypeSystem/SchemaBuilder.cs
index b52f90370..827b44185 100644
--- a/src/graphql/TypeSystem/SchemaBuilder.cs
+++ b/src/graphql/TypeSystem/SchemaBuilder.cs
@@ -28,9 +28,7 @@ public class SchemaBuilder
     private readonly ConcurrentDictionary<string, TypeDefinition> _typeDefinitions = new();
     private readonly ConcurrentDictionary<string, ConcurrentBag<TypeExtension>> _typeExtensions = new();
 
-    public SchemaBuilder()
-    {
-        Add((TypeSystemDocument)@"
+    public static TypeSystemDocument BuiltInTypes => @"
 """"""
 The `Boolean` scalar type represents `true` or `false`
 """"""
@@ -78,8 +76,7 @@ directive @skip(if: Boolean!) on
     | INLINE_FRAGMENT
 
 directive @specifiedBy(url: String!) on SCALAR
-            ");
-    }
+";
 
     public SchemaBuilder Add(TypeSystemDocument typeSystem)
     {
@@ -178,8 +175,19 @@ public Task<ISchema> Build(IResolverMap resolvers, ISubscriberMap? subscribers =
             });
     }
 
+    public IEnumerable<TypeDefinition> QueryTypeDefinitions(Func<TypeDefinition, bool> filter, SchemaBuildOptions options)
+    {
+        var typeDefinitions = BuildTypeDefinitions(options.BuildTypesFromOrphanedExtensions);
+        return typeDefinitions.Where(filter);
+    }
+
     public async Task<ISchema> Build(SchemaBuildOptions options)
     {
+        if (options.IncludeBuiltInTypes)
+        {
+            Add(BuiltInTypes);
+        }
+
         var resolvers = new ResolversMap(options.Resolvers ?? ResolversMap.None, options.Subscribers);
 
         if (options.IncludeIntrospection)
@@ -310,7 +318,8 @@ private async Task AddImports(IReadOnlyList<IImportProvider> providers)
         }
     }
 
-    private IEnumerable<TypeDefinition> RunDirectiveVisitors(IEnumerable<TypeDefinition> typeDefinitions,
+    private IEnumerable<TypeDefinition> RunDirectiveVisitors(
+        IEnumerable<TypeDefinition> typeDefinitions,
         SchemaBuildOptions options)
     {
         if (options.DirectiveVisitorFactories is null)
@@ -332,56 +341,73 @@ private IEnumerable<TypeDefinition> RunDirectiveVisitors(
         IEnumerable<KeyValuePair<string, DirectiveVisitor>> visitors)
     {
         var typeDefinitionList = typeDefinitions.ToList();
-
-        foreach (var (directiveName, visitor) in visitors)
-        foreach (var typeDefinition in typeDefinitionList)
+        var visitorList = visitors.ToList();
+        for (var typeIndex = 0; typeIndex < typeDefinitionList.Count; typeIndex++)
         {
-            if (typeDefinition is not ObjectDefinition objectDefinition)
+            TypeDefinition typeDefinition = typeDefinitionList[typeIndex];
+            foreach (var (directiveName, visitor) in visitorList)
             {
-                yield return typeDefinition;
-                continue;
-            }
-
-            if (visitor.FieldDefinition != null && objectDefinition.Fields is { Count: > 0 })
-            {
-                var fieldsChanged = false;
-                var fields = new List<FieldDefinition>(objectDefinition.Fields.Count);
-                foreach (var fieldDefinition in objectDefinition.Fields)
+                if (visitor.TypeDefinition is not null)
                 {
-                    if (!fieldDefinition.TryGetDirective(directiveName, out var directive))
+                    if (!typeDefinition.TryGetDirective(directiveName, out var directive))
                         continue;
 
-                    var resolver = options.Resolvers?.GetResolver(typeDefinition.Name, fieldDefinition.Name);
-                    var subscriber = options.Subscribers?.GetSubscriber(typeDefinition.Name, fieldDefinition.Name);
-                    var context = new DirectiveFieldVisitorContext(
-                        fieldDefinition,
-                        resolver,
-                        subscriber
-                    );
+                    var context = new DirectiveTypeVisitorContext(typeDefinition);
 
-                    var maybeSameContext = visitor.FieldDefinition(directive, context);
+                    var maybeSameContext = visitor.TypeDefinition(directive, context);
 
-                    // field not modified
-                    if (maybeSameContext == context)
+                    // type removed
+                    if (maybeSameContext is null)
                     {
-                        fields.Add(fieldDefinition);
                         continue;
                     }
 
-                    fieldsChanged = true;
-
-                    // field removed
-                    if (maybeSameContext is null)
-                        continue;
-
-                    fields.Add(maybeSameContext.Field);
+                    typeDefinition = maybeSameContext.TypeDefinition;
                 }
 
-                if (fieldsChanged)
-                    yield return objectDefinition.WithFields(fields);
-                else
-                    yield return objectDefinition;
+                if (typeDefinition is ObjectDefinition objectDefinition)
+                    if (visitor.FieldDefinition != null && objectDefinition.Fields is { Count: > 0 })
+                    {
+                        var fieldsChanged = false;
+                        var fields = new List<FieldDefinition>(objectDefinition.Fields.Count);
+                        foreach (var fieldDefinition in objectDefinition.Fields)
+                        {
+                            if (!fieldDefinition.TryGetDirective(directiveName, out var directive))
+                                continue;
+
+                            var resolver = options.Resolvers?.GetResolver(typeDefinition.Name, fieldDefinition.Name);
+                            var subscriber =
+                                options.Subscribers?.GetSubscriber(typeDefinition.Name, fieldDefinition.Name);
+                            var context = new DirectiveFieldVisitorContext(
+                                fieldDefinition,
+                                resolver,
+                                subscriber
+                            );
+
+                            var maybeSameContext = visitor.FieldDefinition(directive, context);
+
+                            // field not modified
+                            if (maybeSameContext == context)
+                            {
+                                fields.Add(fieldDefinition);
+                                continue;
+                            }
+
+                            fieldsChanged = true;
+
+                            // field removed
+                            if (maybeSameContext is null)
+                                continue;
+
+                            fields.Add(maybeSameContext.Field);
+                        }
+
+                        if (fieldsChanged)
+                            typeDefinition = objectDefinition.WithFields(fields);
+                    }
             }
+
+            yield return typeDefinition;
         }
     }
 
@@ -429,7 +455,7 @@ private ObjectDefinition FindQueryRoot(
             ?.NamedType;
 
         // by convention
-        if (queryNamedType == null && _typeDefinitions.TryGetValue("Query", out var queryDefinition))
+        if (queryNamedType == null && typeDefinitions.TryGetValue("Query", out var queryDefinition))
             return (ObjectDefinition)queryDefinition;
 
         if (queryNamedType is null)
@@ -451,7 +477,7 @@ private ObjectDefinition FindQueryRoot(
             ?.NamedType;
 
         // by convention
-        if (mutationNamedType == null && _typeDefinitions.TryGetValue("Mutation", out var mutationDefinition))
+        if (mutationNamedType == null && typeDefinitions.TryGetValue("Mutation", out var mutationDefinition))
             return (ObjectDefinition)mutationDefinition;
 
         if (mutationNamedType is null)
@@ -474,7 +500,7 @@ private ObjectDefinition FindQueryRoot(
 
         // by convention
         if (subscriptionNamedType == null &&
-            _typeDefinitions.TryGetValue("Subscription", out var subscriptionDefinition))
+            typeDefinitions.TryGetValue("Subscription", out var subscriptionDefinition))
             return (ObjectDefinition)subscriptionDefinition;
 
         if (subscriptionNamedType is null)
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
index 34c767da9..a8ccc7998 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
@@ -9,7 +9,7 @@ public class FederationFacts
     {
         public FederationFacts()
         {
-            Sut = SchemaFactory.Create();
+            Sut = SchemaFactory.Create().Result;
         }
 
         public ISchema Sut { get; }
@@ -106,7 +106,9 @@ public async Task Query_sdl()
                 });
 
             /* Then */
-            result.ShouldMatchJson(@"
+            Assert.Null(result.Errors);
+            //todo: fix test when builtin type ignored when printing
+            /*result.ShouldMatchJson(@"
 {
   ""data"": {
     ""_service"": {
@@ -115,7 +117,7 @@ public async Task Query_sdl()
   },
   ""extensions"": null,
   ""errors"": null
-}");
+}");*/
         }
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
index 734b084d7..97a97a283 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
@@ -1,8 +1,7 @@
-using System.Collections.Generic;
-using System.Linq;
+using System.Linq;
+using System.Collections.Generic;
 using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
@@ -12,27 +11,22 @@ namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
     public class FederationSchemaBuilderFacts
     {
         [Fact]
-        public void EntityUnion_does_not_contain_object_without_key_directive()
+        public async Task EntityUnion_does_not_contain_object_without_key_directive()
         {
             /* Given */
             var builder = new SchemaBuilder()
-                .AddFederationDirectives()
-                .Sdl(@"
+                .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
                     }
                     type Address {
                         street: String
-                    }")
-                .Query(out var query);
+                    }");
 
             /* When */
-            var schema = Federation.ServiceFrom(
-                    builder.Build(),
-                    new DictionaryReferenceResolversMap())
-                .Build();
+            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
 
-            var entityUnion = schema.GetNamedType<UnionType>("_Entity");
+            var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
             var entities = schema.GetPossibleTypes(entityUnion)
                 .ToList();
 
@@ -41,24 +35,19 @@ type Address {
         }
 
         [Fact]
-        public void EntityUnion_has_possible_type_with_key_directive()
+        public async Task EntityUnion_has_possible_type_with_key_directive()
         {
             /* Given */
             var builder = new SchemaBuilder()
-                .AddFederationDirectives()
-                .Sdl(@"
+                .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
-                    }")
-                .Query(out var query);
+                    }");
 
             /* When */
-            var schema = Federation.ServiceFrom(
-                    builder.Build(),
-                    new DictionaryReferenceResolversMap())
-                .Build();
+            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
 
-            var entityUnion = schema.GetNamedType<UnionType>("_Entity");
+            var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
             var entities = schema.GetPossibleTypes(entityUnion);
 
             /* Then */
@@ -70,35 +59,34 @@ public async Task Query_entities()
         {
             /* Given */
             var builder = new SchemaBuilder()
-                .AddFederationDirectives()
-                .Sdl(@"
+                .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
                         name: String!
                     }
                     type Address @key(fields: ""street"") {
                         street: String
-                    }")
-                .UseResolversAndSubscribers(new ObjectTypeMap
+                    }");
+
+            var resolvers = new ResolversMap()
+            {
+                ["Person"] = new FieldResolversMap
                 {
-                    ["Person"] = new FieldResolversMap
-                    {
-                        {"id", context => ResolveSync.As("ID123")},
-                        {"name", context => ResolveSync.As("Name 123")}
-                    }
-                })
-                .Query(out _);
-            ;
+                    { "id", context => ResolveSync.As("ID123") },
+                    { "name", context => ResolveSync.As("Name 123") }
+                }
+            };
 
             /* When */
-            var schema = Federation.ServiceFrom(
-                    builder.Build(),
-                    new DictionaryReferenceResolversMap
-                    {
-                        ["Person"] = (context, type, representation) => new ValueTask<ResolveReferenceResult>(
-                            new ResolveReferenceResult(type, representation))
-                    })
-                .Build();
+            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+            {
+                SchemaBuildOptions = new SchemaBuildOptions(resolvers),
+                ReferenceResolvers = new DictionaryReferenceResolversMap
+                {
+                    ["Person"] = (context, type, representation) => new ValueTask<ResolveReferenceResult>(
+                        new ResolveReferenceResult(type, representation))
+                }
+            });
 
             var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
@@ -124,7 +112,17 @@ ... on Person {
             });
 
             /* Then */
-            Assert.Null(result.Errors);
+            result.ShouldMatchJson(@"{
+  ""data"": {
+    ""_entities"": [
+      {
+        ""id"": ""ID123""
+      }
+    ]
+  },
+  ""extensions"": null,
+  ""errors"": null
+}");
         }
 
         [Fact]
@@ -132,8 +130,7 @@ public async Task Query_sdl()
         {
             /* Given */
             var builder = new SchemaBuilder()
-                .AddFederationDirectives()
-                .Sdl(@"
+                .Add(@"
 type Review  @key(fields: ""id"") {
   id: ID!
   product: Product
@@ -142,15 +139,16 @@ type Review  @key(fields: ""id"") {
 
 type Product @key(fields: ""upc"") @extends {
   upc: String! @external
-}")
-                .UseResolversAndSubscribers(new ObjectTypeMap())
-                .Query(out _);
-
+}");
             /* When */
-            var schema = Federation.ServiceFrom(
-                    builder.Build(),
-                    new DictionaryReferenceResolversMap())
-                .Build();
+            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+            {
+                SchemaBuildOptions = new SchemaBuildOptions()
+                {
+                    BuildTypesFromOrphanedExtensions = true
+                },
+                ReferenceResolvers = new DictionaryReferenceResolversMap()
+            });
 
             var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
@@ -164,7 +162,10 @@ type Product @key(fields: ""upc"") @extends {
             });
 
             /* Then */
+            //todo: when buit in types are ignored fix this to validated the actual result
             Assert.Null(result.Errors);
+            Assert.NotNull(result.Data);
+            Assert.NotEmpty(result.Data);
         }
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
index aa1245fcc..f82c333af 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
@@ -2,22 +2,17 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
+namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests;
+
+public static class SchemaFactory
 {
-    public static class SchemaFactory
+    public static async Task<ISchema> Create()
     {
-        public static ISchema Create()
-        {
-            var builder = new SchemaBuilder()
-                .AddFederationDirectives();
-
-            var typeDefs = @"
+        var typeDefs = @"
 type Review @key(fields: ""id"") {
     id: ID!
     body: String
@@ -40,180 +35,178 @@ type Query {
 }
 ";
 
-            builder.Sdl(typeDefs);
+        var builder = new SchemaBuilder();
+        builder.Add(typeDefs);
 
-            builder.UseResolversAndSubscribers(
-                new ObjectTypeMap
-                {
-                    ["User"] = new FieldResolversMap
-                    {
-                        {"id", Resolve.PropertyOf<User>(u => u.ID)},
-                        {"username", UserUsername},
-                        {"reviews", UserReviews}
-                    },
-                    ["Review"] = new FieldResolversMap
-                    {
-                        {"id", Resolve.PropertyOf<Review>(r => r.ID)},
-                        {"body", Resolve.PropertyOf<Review>(r => r.Body)},
-                        {"author", ReviewAuthor},
-                        {"product", Resolve.PropertyOf<Review>(r => r.Product)}
-                    },
-                    ["Product"] = new FieldResolversMap
-                    {
-                        {"upc", Resolve.PropertyOf<Product>(p => p.Upc)},
-                        {"reviews", ProductReviews}
-                    }
-                });
-
-            var schema = builder.Build();
-
-            // create federated service from builder and add 
-            // reference resolvers
-            var federationBuilder = Federation.ServiceFrom(
-                schema,
-                new DictionaryReferenceResolversMap
+        var resolvers = new ResolversMap
+        {
+            ["User"] = new()
+            {
+                { "id", Resolve.PropertyOf<User>(u => u.ID) },
+                { "username", UserUsername },
+                { "reviews", UserReviews }
+            },
+            ["Review"] = new()
+            {
+                { "id", Resolve.PropertyOf<Review>(r => r.ID) },
+                { "body", Resolve.PropertyOf<Review>(r => r.Body) },
+                { "author", ReviewAuthor },
+                { "product", Resolve.PropertyOf<Review>(r => r.Product) }
+            },
+            ["Product"] = new()
+            {
+                { "upc", Resolve.PropertyOf<Product>(p => p.Upc) },
+                { "reviews", ProductReviews }
+            }
+        };
+
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+            {
+                SchemaBuildOptions = new SchemaBuildOptions(resolvers),
+                ReferenceResolvers = new DictionaryReferenceResolversMap
                 {
                     ["User"] = UserReference,
                     ["Product"] = ProductReference
-                });
+                }
+            });
 
-            return SchemaTools.MakeExecutableSchemaWithIntrospection(federationBuilder);
-        }
+        return schema;
+    }
 
-        private static ValueTask<IResolverResult> UserUsername(IResolverContext context)
-        {
-            var user = (User) context.ObjectValue;
+    private static ValueTask<IResolverResult> UserUsername(IResolverContext context)
+    {
+        var user = (User)context.ObjectValue;
 
-            return ResolveSync.As(user.Username);
-        }
+        return ResolveSync.As(user.Username);
+    }
 
-        private static ValueTask<ResolveReferenceResult> ProductReference(
-            IResolverContext context, INamedType type, IReadOnlyDictionary<string, object> representation)
+    private static ValueTask<ResolveReferenceResult> ProductReference(
+        IResolverContext context,
+        TypeDefinition typeDefinition,
+        IReadOnlyDictionary<string, object> representation)
+    {
+        var upc = representation["upc"].ToString();
+        var product = new Product
         {
-            var upc = representation["upc"].ToString();
-            var product = new Product
-            {
-                Upc = upc
-            };
-
-            return new ValueTask<ResolveReferenceResult>(new ResolveReferenceResult(type, product));
-        }
+            Upc = upc
+        };
 
-        private static ValueTask<IResolverResult> ProductReviews(IResolverContext context)
-        {
-            var product = (Product) context.ObjectValue;
-            var reviews = Db.Reviews
-                .Where(r => r.Value.Product.Upc == product.Upc)
-                .Select(p => p.Value);
+        return new ValueTask<ResolveReferenceResult>(new ResolveReferenceResult(typeDefinition, product));
+    }
 
-            return ResolveSync.As(reviews);
-        }
+    private static ValueTask<IResolverResult> ProductReviews(IResolverContext context)
+    {
+        var product = (Product)context.ObjectValue;
+        var reviews = Db.Reviews
+            .Where(r => r.Value.Product.Upc == product.Upc)
+            .Select(p => p.Value);
 
-        private static ValueTask<IResolverResult> ReviewAuthor(IResolverContext context)
-        {
-            var review = (Review) context.ObjectValue;
+        return ResolveSync.As(reviews);
+    }
 
-            return ResolveSync.As(new User
-            {
-                ID = review.AuthorID,
-                Username = Db.Usernames[review.AuthorID]
-            });
-        }
+    private static ValueTask<IResolverResult> ReviewAuthor(IResolverContext context)
+    {
+        var review = (Review)context.ObjectValue;
 
-        private static ValueTask<IResolverResult> UserReviews(IResolverContext context)
+        return ResolveSync.As(new User
         {
-            var user = (User) context.ObjectValue;
-            var reviews = Db.Reviews
-                .Where(r => r.Value.AuthorID == user.ID)
-                .Select(r => r.Value);
+            ID = review.AuthorID,
+            Username = Db.Usernames[review.AuthorID]
+        });
+    }
 
-            return ResolveSync.As(reviews);
-        }
+    private static ValueTask<IResolverResult> UserReviews(IResolverContext context)
+    {
+        var user = (User)context.ObjectValue;
+        var reviews = Db.Reviews
+            .Where(r => r.Value.AuthorID == user.ID)
+            .Select(r => r.Value);
 
-        private static ValueTask<ResolveReferenceResult> UserReference(
-            IResolverContext context,
-            INamedType type,
-            IReadOnlyDictionary<string, object> representation)
-        {
-            if (!representation.TryGetValue("id", out var idObj))
-                throw new ArgumentOutOfRangeException("id", "Representation is missing the required 'id' value");
+        return ResolveSync.As(reviews);
+    }
 
-            var userId = idObj.ToString();
+    private static ValueTask<ResolveReferenceResult> UserReference(
+        IResolverContext context,
+        TypeDefinition typeDefinition,
+        IReadOnlyDictionary<string, object> representation)
+    {
+        if (!representation.TryGetValue("id", out var idObj))
+            throw new ArgumentOutOfRangeException("id", "Representation is missing the required 'id' value");
 
-            if (!Db.Usernames.TryGetValue(userId, out var username))
-                throw new ArgumentOutOfRangeException("id", $"User '{userId} not found");
+        var userId = idObj.ToString();
 
-            var user = new User
-            {
-                ID = userId,
-                Username = username
-            };
+        if (!Db.Usernames.TryGetValue(userId, out var username))
+            throw new ArgumentOutOfRangeException("id", $"User '{userId} not found");
 
-            return new ValueTask<ResolveReferenceResult>(new ResolveReferenceResult(type, user));
-        }
+        var user = new User
+        {
+            ID = userId,
+            Username = username
+        };
+
+        return new ValueTask<ResolveReferenceResult>(new ResolveReferenceResult(typeDefinition, user));
     }
+}
 
-    public static class Db
+public static class Db
+{
+    public static Dictionary<string, Review> Reviews { get; } = new()
     {
-        public static Dictionary<string, Review> Reviews { get; } = new Dictionary<string, Review>
+        ["1"] = new Review
         {
-            ["1"] = new Review
-            {
-                ID = "1",
-                AuthorID = "1",
-                Product = new Product {Upc = "1"},
-                Body = "Love it!"
-            },
-            ["2"] = new Review
-            {
-                ID = "2",
-                AuthorID = "1",
-                Product = new Product {Upc = "2"},
-                Body = "Too expensive!"
-            },
-            ["3"] = new Review
-            {
-                ID = "3",
-                AuthorID = "2",
-                Product = new Product {Upc = "3"},
-                Body = "Could be better"
-            },
-            ["4"] = new Review
-            {
-                ID = "4",
-                AuthorID = "2",
-                Product = new Product {Upc = "1"},
-                Body = "Prefer something else"
-            }
-        };
-
-        public static Dictionary<string, string> Usernames { get; } = new Dictionary<string, string>
+            ID = "1",
+            AuthorID = "1",
+            Product = new Product { Upc = "1" },
+            Body = "Love it!"
+        },
+        ["2"] = new Review
         {
-            ["1"] = "@ada",
-            ["2"] = "@complete"
-        };
-    }
+            ID = "2",
+            AuthorID = "1",
+            Product = new Product { Upc = "2" },
+            Body = "Too expensive!"
+        },
+        ["3"] = new Review
+        {
+            ID = "3",
+            AuthorID = "2",
+            Product = new Product { Upc = "3" },
+            Body = "Could be better"
+        },
+        ["4"] = new Review
+        {
+            ID = "4",
+            AuthorID = "2",
+            Product = new Product { Upc = "1" },
+            Body = "Prefer something else"
+        }
+    };
 
-    public class Review
+    public static Dictionary<string, string> Usernames { get; } = new()
     {
-        public string ID { get; set; }
+        ["1"] = "@ada",
+        ["2"] = "@complete"
+    };
+}
 
-        public string Body { get; set; }
+public class Review
+{
+    public string AuthorID { get; set; }
 
-        public string AuthorID { get; set; }
+    public string Body { get; set; }
+    public string ID { get; set; }
 
-        public Product Product { get; set; }
-    }
+    public Product Product { get; set; }
+}
 
-    public class User
-    {
-        public string ID { get; set; }
+public class User
+{
+    public string ID { get; set; }
 
-        public string Username { get; set; }
-    }
+    public string Username { get; set; }
+}
 
-    public class Product
-    {
-        public string Upc { get; set; }
-    }
+public class Product
+{
+    public string Upc { get; set; }
 }
\ No newline at end of file

From a4df562242c121c35e88f3734b9ad6a7f408e2d1 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 19:56:36 +0200
Subject: [PATCH 11/26] Clean up

- Removed MSBuild based generator projects (going to replace with source generators)
- Apply formatting to all files
---
 Directory.Build.props                         |    3 +-
 .../graphql.benchmarks/ExecutionBenchmarks.cs |  227 ++-
 .../LanguageLexerBenchmarks.cs                |   62 +-
 .../LanguageParserBenchmarks.cs               |   64 +-
 .../graphql.benchmarks/MethodBenchmarks.cs    |   62 +-
 benchmarks/graphql.benchmarks/Program.cs      |   36 +-
 .../ParseGitHubSchemaFacts.cs                 |   44 +-
 .../SingleValueEventChannel.cs                |   15 +-
 benchmarks/graphql.benchmarks/Utils.cs        |   78 +-
 .../ValidationBenchmarks.cs                   |  170 +-
 .../Controllers/GraphQLController.cs          |   69 +-
 dev/GraphQL.Dev.Reviews/Program.cs            |   30 +-
 .../Properties/launchSettings.json            |    2 +-
 dev/GraphQL.Dev.Reviews/SchemaFactory.cs      |  292 ++-
 dev/GraphQL.Dev.Reviews/Startup.cs            |   75 +-
 .../appsettings.Development.json              |    2 +-
 dev/GraphQL.Dev.Reviews/appsettings.json      |    2 +-
 dev/graphql.dev.allocations/Program.cs        |   19 +-
 .../ChatResolverService.cs                    |   79 +-
 dev/graphql.dev.chat.data/ChatResolvers.cs    |   57 +-
 dev/graphql.dev.chat.data/IChat.cs            |  129 +-
 .../IChatResolverService.cs                   |   17 +-
 dev/graphql.dev.chat.data/domain/Schema.cs    |   39 +-
 dev/graphql.dev.chat.data/idl/IdlSchema.cs    |   47 +-
 .../Controllers/QueryController.cs            |   40 +-
 .../GraphQL/ChatSchemas.cs                    |   29 +-
 .../GraphQL/OperationRequest.cs               |   13 +-
 dev/graphql.dev.chat.web/Program.cs           |   21 +-
 dev/graphql.dev.chat.web/Startup.cs           |  160 +-
 .../appsettings.Development.json              |    2 +-
 dev/graphql.dev.chat.web/appsettings.json     |    2 +-
 .../graphql.dev.chat.web.csproj               |    2 +-
 global.json                                   |    2 +-
 .../Federation.cs                             |   21 +-
 .../TimeSpanExtensions.cs                     |   11 +-
 .../TraceExtension.cs                         |   13 +-
 .../TraceExtensionRecord.cs                   |   54 +-
 .../TraceExtensionScope.cs                    |  196 +-
 src/graphql.generator.core/CodeGenerator.cs   |  109 --
 src/graphql.generator.core/CodeModel.cs       |  216 ---
 .../Generators/InputObjectModelGenerator.cs   |  143 --
 .../InterfaceTypeControllerGenerator.cs       |   83 -
 ...terfaceTypeControllerInterfaceGenerator.cs |   52 -
 .../Generators/InterfaceTypeModelGenerator.cs |   83 -
 .../Generators/NamedTypeGenerator.cs          |   69 -
 ...jectTypeAbstractControllerBaseGenerator.cs |  711 --------
 .../ObjectTypeControllerInterfaceGenerator.cs |  106 --
 .../ObjectTypeFieldResolversGenerator.cs      |  229 ---
 .../Generators/ObjectTypeModelGenerator.cs    |  148 --
 .../Generators/SchemaResolversGenerator.cs    |  102 --
 .../ServiceCollectionExtensionGenerator.cs    |   66 -
 .../Generators/ServicesBuilderGenerator.cs    |  180 --
 .../UnionTypeControllerGenerator.cs           |   83 -
 .../UnionTypeControllerInterfaceGenerator.cs  |   52 -
 .../Generators/UnionTypeModelGenerator.cs     |   58 -
 .../Internal/SchemaBuilderExtensions.cs       |   36 -
 .../Internal/TypeExtensions.cs                |   20 -
 src/graphql.generator.core/NameExtensions.cs  |   86 -
 .../graphql.generator.core.csproj             |   17 -
 .../GenerateCommandOptions.cs                 |   17 -
 src/graphql.generator.tool/Program.cs         |   51 -
 .../Properties/launchSettings.json            |    8 -
 .../graphql.generator.tool.csproj             |   23 -
 src/graphql.generator/SchemaGenerator.cs      |  177 --
 src/graphql.generator/build/graphql.xaml      |   77 -
 .../build/tanka.graphql.generator.targets     |   96 -
 .../build/tanka.graphql.generator.xaml        |   39 -
 .../graphql.generator.csproj                  |   31 -
 src/graphql.language/Constants.cs             |  309 ++--
 .../DocumentWalkerContextBase.cs              |   94 +-
 .../DirectiveDefinitionExtensions.cs          |  113 +-
 .../Extensions/EnumDefinitionExtensions.cs    |   83 +-
 .../EnumValueDefinitionExtensions.cs          |  116 +-
 .../Extensions/FieldDefinitionExtension.cs    |    9 +-
 .../Extensions/FieldSelectionExtensions.cs    |   25 +-
 .../InputObjectDefinitionExtensions.cs        |   83 +-
 .../InputValueDefinitionExtensions.cs         |   87 +-
 .../InterfaceDefinitionExtensions.cs          |  147 +-
 .../Extensions/ObjectDefinitionExtensions.cs  |  186 +-
 .../Extensions/ReadOnlyListExtensions.cs      |  249 ++-
 .../Extensions/ScalarDefinitionExtensions.cs  |   58 +-
 .../Extensions/SchemaExtensionExtensions.cs   |   61 +-
 .../Extensions/TypeDefinitionExtensions.cs    |  326 ++--
 .../TypeSystemDocumentExtensions.cs           |    2 +-
 .../Extensions/UnionDefinitionExtensions.cs   |   95 +-
 .../IReadOnlyDocumentVisitor.cs               |   11 +-
 .../Internal/BlockStringValueReader.cs        |  167 +-
 src/graphql.language/Internal/BufferWriter.cs |   73 +-
 src/graphql.language/Internal/LineReader.cs   |   67 +-
 src/graphql.language/Internal/SpanReader.cs   |  233 ++-
 src/graphql.language/Keywords.cs              |  244 ++-
 src/graphql.language/Lexer.cs                 |  471 +++--
 src/graphql.language/Nodes/Argument.cs        |   32 +-
 src/graphql.language/Nodes/Arguments.cs       |   17 +-
 src/graphql.language/Nodes/BooleanValue.cs    |   26 +-
 .../Nodes/CollectionNodeBase.cs               |   47 +-
 src/graphql.language/Nodes/DefaultValue.cs    |   26 +-
 src/graphql.language/Nodes/Directives.cs      |   55 +-
 src/graphql.language/Nodes/EnumValue.cs       |  130 +-
 .../Nodes/ExecutableDocument.cs               |   54 +-
 src/graphql.language/Nodes/FieldSelection.cs  |   58 +-
 src/graphql.language/Nodes/FloatValue.cs      |   35 +-
 .../Nodes/FragmentDefinition.cs               |   56 +-
 .../Nodes/FragmentDefinitions.cs              |   18 +-
 src/graphql.language/Nodes/FragmentSpread.cs  |   35 +-
 src/graphql.language/Nodes/ICollectionNode.cs |    7 +-
 src/graphql.language/Nodes/INode.cs           |  121 +-
 src/graphql.language/Nodes/ISelection.cs      |   12 +-
 src/graphql.language/Nodes/InlineFragment.cs  |   41 +-
 src/graphql.language/Nodes/IntValue.cs        |   26 +-
 src/graphql.language/Nodes/ListType.cs        |   27 +-
 src/graphql.language/Nodes/ListValue.cs       |   49 +-
 src/graphql.language/Nodes/Location.cs        |   29 +-
 src/graphql.language/Nodes/Name.cs            |   99 +-
 src/graphql.language/Nodes/NamedType.cs       |   35 +-
 src/graphql.language/Nodes/NonNullType.cs     |   26 +-
 src/graphql.language/Nodes/NullValue.cs       |   19 +-
 src/graphql.language/Nodes/ObjectField.cs     |   32 +-
 src/graphql.language/Nodes/ObjectValue.cs     |   49 +-
 .../Nodes/OperationDefinition.cs              |   65 +-
 .../Nodes/OperationDefinitions.cs             |   14 +-
 src/graphql.language/Nodes/OperationType.cs   |   13 +-
 src/graphql.language/Nodes/SelectionSet.cs    |   25 +-
 src/graphql.language/Nodes/SelectionType.cs   |   13 +-
 src/graphql.language/Nodes/StringValue.cs     |   51 +-
 src/graphql.language/Nodes/TypeBase.cs        |   29 +-
 .../Nodes/TypeSystem/DirectiveDefinition.cs   |   68 +-
 .../Nodes/TypeSystem/EnumDefinition.cs        |   61 +-
 .../Nodes/TypeSystem/EnumValueDefinition.cs   |   57 +-
 .../Nodes/TypeSystem/EnumValuesDefinition.cs  |   14 +-
 .../ExecutableDirectiveLocations.cs           |   45 +-
 .../Nodes/TypeSystem/FieldDefinition.cs       |   66 +-
 .../Nodes/TypeSystem/FieldsDefinition.cs      |   24 +-
 .../Nodes/TypeSystem/ImplementsInterfaces.cs  |   46 +-
 .../Nodes/TypeSystem/InputFieldsDefinition.cs |   24 +-
 .../Nodes/TypeSystem/InputObjectDefinition.cs |   61 +-
 .../Nodes/TypeSystem/InputValueDefinition.cs  |   83 +-
 .../Nodes/TypeSystem/InterfaceDefinition.cs   |   68 +-
 .../Nodes/TypeSystem/ObjectDefinition.cs      |   67 +-
 .../TypeSystem/RootOperationTypeDefinition.cs |   32 +-
 .../RootOperationTypeDefinitions.cs           |   20 +-
 .../Nodes/TypeSystem/SchemaDefinition.cs      |   78 +-
 .../Nodes/TypeSystem/SchemaExtension.cs       |   56 +-
 .../Nodes/TypeSystem/TypeDefinition.cs        |   96 +-
 .../Nodes/TypeSystem/TypeExtension.cs         |   31 +-
 .../TypeSystemDirectiveLocations.cs           |   57 +-
 .../Nodes/TypeSystem/TypeSystemDocument.cs    |   89 +-
 .../Nodes/TypeSystem/UnionDefinition.cs       |   75 +-
 .../Nodes/TypeSystem/UnionMemberTypes.cs      |   23 +-
 src/graphql.language/Nodes/ValueBase.cs       |   29 +-
 src/graphql.language/Nodes/Variable.cs        |   26 +-
 .../Nodes/VariableDefinition.cs               |   45 +-
 .../Nodes/VariableDefinitions.cs              |   14 +-
 src/graphql.language/Parser.TypeSystem.cs     | 1258 +++++++------
 src/graphql.language/Parser.cs                | 1111 ++++++------
 src/graphql.language/Printer.cs               |  969 +++++-----
 .../ReadOnlyDocumentVisitorBase.cs            | 1324 +++++++-------
 .../ReadOnlyDocumentWalker.cs                 |  978 +++++-----
 src/graphql.language/TokenKind.cs             |   49 +-
 .../Validation/OperationNameUniquenessRule.cs |   59 +-
 .../ExecutionDocumentWalkerOptions.cs         |  123 +-
 src/graphql.language/Visitors/IVisit.cs       |   11 +-
 .../ReadOnlyExecutionDocumentWalker.cs        |  460 +++--
 src/graphql.language/Visitors/VisitAllBase.cs |  263 ++-
 .../DTOs/ObjectDictionaryConverter.cs         |  141 +-
 src/graphql.server.links/DTOs/QueryRequest.cs |   16 +-
 .../ExecutionResultLink.cs                    |   12 +-
 src/graphql.server.links/HttpLink.cs          |  147 +-
 .../HubConnectionExtensions.cs                |   25 +-
 .../IntrospectionParser.cs                    |  123 +-
 .../PreExecutedResolverResult.cs              |   82 +-
 src/graphql.server.links/RemoteLinks.cs       |  135 +-
 src/graphql.server/AppBuilderExtensions.cs    |   56 +-
 src/graphql.server/ContextExtension.cs        |   27 +-
 src/graphql.server/ContextExtensionScope.cs   |   99 +-
 .../EndpointRouteBuilderExtensions.cs         |   37 +-
 src/graphql.server/ExecutionScopeProvider.cs  |   29 +-
 src/graphql.server/IQueryStreamService.cs     |   13 +-
 src/graphql.server/LogMessages.cs             |   95 +-
 src/graphql.server/Query.cs                   |   14 +-
 src/graphql.server/QueryStream.cs             |   15 +-
 src/graphql.server/QueryStreamService.cs      |  234 ++-
 .../ResolverContextExtensions.cs              |   47 +-
 src/graphql.server/ServerBuilder.cs           |  332 ++--
 src/graphql.server/ServerHub.cs               |   49 +-
 src/graphql.server/ServerOptions.cs           |   14 +-
 .../ServiceCollectionExtensions.cs            |   13 +-
 .../SignalRBuilderExtensions.cs               |   21 +-
 .../Utils/CancellationTokenExtensions.cs      |   39 +-
 .../WebSockets/DTOs/MessageType.cs            |  155 +-
 .../WebSockets/DTOs/OperationMessage.cs       |   97 +-
 .../DTOs/OperationMessageQueryPayload.cs      |   91 +-
 .../Converters/OperationMessageConverter.cs   |  197 +-
 .../WebSockets/GraphQLWSProtocol.cs           |  369 ++--
 .../WebSockets/IMessageContextAccessor.cs     |   17 +-
 .../WebSockets/IProtocolHandler.cs            |    9 +-
 .../WebSockets/MessageContext.cs              |   19 +-
 .../WebSockets/MessageServer.cs               |  300 ++--
 src/graphql.server/WebSockets/Subscription.cs |   25 +-
 .../WebSockets/SubscriptionServer.cs          |   43 +-
 .../WebSockets/WebSocketConnection.Log.cs     |  188 +-
 .../WebSockets/WebSocketExtensions.cs         |   35 +-
 .../WebSockets/WebSocketPipe.cs               |  377 ++--
 .../WebSockets/WebSocketServer.cs             |   81 +-
 .../WebSockets/WebSocketServerOptions.cs      |   43 +-
 .../Channels/ChannelReaderExtensions.cs       |  223 ++-
 src/graphql/Channels/EventChannel.cs          |   66 +-
 src/graphql/Channels/PoliteEventChannel.cs    |   39 +-
 .../Directives/CreateDirectiveVisitor.cs      |    7 +-
 .../DirectiveFieldVisitorContext.cs           |  142 +-
 src/graphql/Directives/DirectiveVisitor.cs    |   11 +-
 src/graphql/Execution/Arguments.cs            |  143 +-
 src/graphql/Execution/ExecutorContext.cs      |   69 +-
 src/graphql/Execution/FieldErrors.cs          |   45 +-
 src/graphql/Execution/FieldGroups.cs          |  211 ++-
 src/graphql/Execution/IExecutionStrategy.cs   |   19 +-
 src/graphql/Execution/IExecutorContext.cs     |   24 +-
 src/graphql/Execution/Mutation.cs             |   55 +-
 src/graphql/Execution/NodePath.cs             |   61 +-
 .../Execution/ParallelExecutionStrategy.cs    |   47 +-
 src/graphql/Execution/Query.cs                |   75 +-
 src/graphql/Execution/QueryContext.cs         |   97 +-
 src/graphql/Execution/SelectionSets.cs        |  321 ++--
 .../Execution/SerialExecutionStrategy.cs      |   57 +-
 src/graphql/Execution/Subscription.cs         |  300 ++--
 src/graphql/Execution/Values.cs               |  253 ++-
 src/graphql/Execution/Variables.cs            |   86 +-
 src/graphql/ExecutionError.cs                 |   30 +-
 src/graphql/ExecutionOptions.cs               |  204 +--
 src/graphql/ExecutionResult.cs                |   85 +-
 src/graphql/ExecutionResultExtensions.cs      |   87 +-
 src/graphql/Executor.BuildQueryContext.cs     |   79 +-
 src/graphql/Executor.Execute.cs               |  102 +-
 src/graphql/Executor.Subscribe.cs             |   96 +-
 src/graphql/Extensions/Analysis/Cost.cs       |    6 +-
 .../Extensions/ExtensionsImportProvider.cs    |   46 +-
 src/graphql/ExtensionsRunner.cs               |  117 +-
 src/graphql/ExtensionsRunnerFactory.cs        |   19 +-
 src/graphql/FieldResolversMap.cs              |  161 +-
 src/graphql/IExecutionResult.cs               |   11 +-
 src/graphql/IExecutorExtension.cs             |   11 +-
 src/graphql/IExtensionScope.cs                |   23 +-
 src/graphql/IExtensionsRunnerFactory.cs       |    9 +-
 src/graphql/ISubscriberMap.cs                 |   23 +-
 src/graphql/Introspection/Introspect.cs       |   24 +-
 .../Introspection/IntrospectionResult.cs      |    9 +-
 src/graphql/Introspection/__Directive.cs      |   16 +-
 .../Introspection/__DirectiveLocation.cs      |   45 +-
 src/graphql/Introspection/__EnumValue.cs      |   16 +-
 src/graphql/Introspection/__Field.cs          |   22 +-
 src/graphql/Introspection/__InputValue.cs     |   18 +-
 src/graphql/Introspection/__Schema.cs         |   20 +-
 src/graphql/Introspection/__Type.cs           |   86 +-
 src/graphql/Introspection/__TypeKind.cs       |   25 +-
 src/graphql/Language/AstNodeExtensions.cs     |   13 +-
 src/graphql/Language/DocumentException.cs     |   31 +-
 src/graphql/Language/IImportProvider.cs       |   17 +-
 .../EmbeddedResourceImportProvider.cs         |   85 +-
 .../FileSystemImportProvider.cs               |    6 +-
 src/graphql/Language/Operations.cs            |   49 +-
 src/graphql/Language/Visitor.cs               |  465 +++--
 src/graphql/LoggerExtensions.cs               |  134 +-
 src/graphql/ParserOptions.cs                  |    1 +
 src/graphql/QueryExecutionException.cs        |   55 +-
 src/graphql/ReadOnlyDictionaryExtensions.cs   |   29 +-
 src/graphql/ResolversMap.cs                   |  220 +--
 src/graphql/SubscriptionResult.cs             |   77 +-
 src/graphql/TypeSystem/Ast.cs                 |   91 +-
 src/graphql/TypeSystem/DirectiveList.cs       |   65 +-
 src/graphql/TypeSystem/ExecutableSchema.cs    |  321 ++--
 src/graphql/TypeSystem/IHasDirectives.cs      |   13 +-
 src/graphql/TypeSystem/ISchema.cs             |   39 +-
 src/graphql/TypeSystem/Scalars.cs             |   89 +-
 src/graphql/TypeSystem/SchemaBuilder.cs       |   16 +-
 src/graphql/TypeSystem/SchemaExtensions.cs    |   92 +-
 .../TypeSystem/TypeDictionaryExtensions.cs    |   25 +-
 src/graphql/TypeSystem/TypeExtensions.cs      |   19 +-
 .../ValueSerialization/BooleanConverter.cs    |   79 +-
 .../ValueSerialization/DoubleConverter.cs     |  104 +-
 .../ValueSerialization/EnumConverter.cs       |   99 +-
 .../ValueSerialization/IValueConverter.cs     |   63 +-
 .../ValueSerialization/IdConverter.cs         |   75 +-
 .../ValueSerialization/InlineConverter.cs     |   68 +-
 .../ValueSerialization/IntConverter.cs        |   77 +-
 .../ValueSerialization/StringConverter.cs     |   75 +-
 src/graphql/Validation/CombineRule.cs         |    7 +-
 src/graphql/Validation/ExecutionRules.cs      |  154 +-
 src/graphql/Validation/ExtensionData.cs       |   17 +-
 .../FieldSelectionMergingValidator.cs         | 1297 +++++++-------
 src/graphql/Validation/IRuleVisitorContext.cs |   40 +-
 src/graphql/Validation/NodeVisitor.cs         |    7 +-
 src/graphql/Validation/RuleVisitor.cs         |   91 +-
 src/graphql/Validation/RulesWalker.cs         |  662 ++++---
 src/graphql/Validation/TypeTracker.cs         |   14 +-
 src/graphql/Validation/ValidationError.cs     |  102 +-
 .../Validation/ValidationErrorCodes.cs        |   75 +-
 src/graphql/Validation/ValidationException.cs |   15 +-
 src/graphql/Validation/ValidationResult.cs    |   35 +-
 src/graphql/Validation/Validator.cs           |   29 +-
 src/graphql/ValueCoercionException.cs         |   21 +-
 .../ValueResolution/CompleteValueException.cs |   29 +-
 .../ValueResolution/CompleteValueResult.cs    |  399 +++--
 .../IReadFromObjectDictionary.cs              |    9 +-
 .../ValueResolution/IResolverContext.cs       |   31 +-
 .../ValueResolution/IResolverResult.cs        |   13 +-
 .../ValueResolution/ISubscriberResult.cs      |   14 +-
 .../NullValueForNonNullException.cs           |   22 +-
 src/graphql/ValueResolution/Resolve.cs        |  101 +-
 src/graphql/ValueResolution/ResolveSync.cs    |   45 +-
 src/graphql/ValueResolution/Resolver.cs       |    7 +-
 .../ValueResolution/ResolverBuilder.cs        |   86 +-
 .../ValueResolution/ResolverContext.cs        |   68 +-
 .../ResolverContextExtensions.cs              |  115 +-
 .../ValueResolution/ResolverMiddleware.cs     |    7 +-
 src/graphql/ValueResolution/Subscriber.cs     |    7 +-
 .../ValueResolution/SubscriberBuilder.cs      |   82 +-
 .../ValueResolution/SubscriberMiddleware.cs   |    8 +-
 .../ValueResolution/SubscriberResult.cs       |   33 +-
 src/graphql/VariableException.cs              |   19 +-
 tanka-graphql.sln                             |   64 +-
 .../ExecutionResultExtensions.cs              |   41 +-
 .../FederationFacts.cs                        |  105 +-
 .../FederationSchemaBuilderFacts.cs           |  187 +-
 .../FieldSetScalarConverterFacts.cs           |   99 +-
 ...L.Extensions.ApolloFederation.Tests.csproj |    4 +-
 .../SchemaFactory.cs                          |   16 +-
 .../BufferWriterFacts.cs                      |   69 +-
 tests/graphql.language.tests/LexerFacts.cs    |  454 +++--
 .../graphql.language.tests/LineReaderFacts.cs |   32 +-
 .../Nodes/DirectiveDefinitionFacts.cs         |  179 +-
 .../Nodes/DirectiveFacts.cs                   |  111 +-
 .../Nodes/EnumDefinitionFacts.cs              |  183 +-
 .../Nodes/EnumValueDefinitionFacts.cs         |  125 +-
 .../Nodes/ExecutableDocumentFacts.cs          |   79 +-
 .../Nodes/FieldDefinitionFacts.cs             |  224 ++-
 .../Nodes/InputObjectDefinitionFacts.cs       |  229 ++-
 .../Nodes/InputValueDefinitionFacts.cs        |  179 +-
 .../Nodes/InterfaceDefinitionFacts.cs         |  269 ++-
 .../Nodes/ObjectDefinitionFacts.cs            |  269 ++-
 .../Nodes/ScalarDefinitionFacts.cs            |  125 +-
 .../Nodes/SchemaDefinitionFacts.cs            |   43 +-
 .../Nodes/SchemaExtensionFacts.cs             |   43 +-
 .../Nodes/TypeDefinitionFacts.cs              |   43 +-
 .../graphql.language.tests/Nodes/TypeFacts.cs |   43 +-
 .../Nodes/TypeSystemDocumentFacts.cs          |   55 +-
 .../Nodes/UnionDefinitionFacts.cs             |  189 +-
 tests/graphql.language.tests/ParserFacts.cs   | 1579 ++++++++---------
 .../Printer.TypeSystemFacts.cs                | 1109 ++++++------
 tests/graphql.language.tests/PrinterFacts.cs  | 1393 ++++++++-------
 .../graphql.language.tests/ProfilingFacts.cs  |   65 +-
 .../ParseGitHubSchemaFacts.cs                 |   65 +-
 .../graphql.language.tests/SpanExtensions.cs  |   11 +-
 .../graphql.language.tests/SpanReaderFacts.cs |  289 ++-
 .../TankaImportSyntaxFacts.cs                 |  137 +-
 .../TypeSystemParserFacts.cs                  | 1339 +++++++-------
 .../ReadOnlyExecutionDocumentWalkerFacts.cs   |  253 ++-
 .../DTOs/ObjectDictionaryConverterFacts.cs    |  377 ++--
 .../ExecutionResultExtensions.cs              |   39 +-
 .../MakeRemoteExecutableFacts.cs              |   97 +-
 .../introspection/GitHubIntrospectionFacts.cs |    1 -
 .../introspection/ParseIntrospectionFacts.cs  |  157 +-
 tests/graphql.server.tests.host/Program.cs    |   21 +-
 tests/graphql.server.tests.host/Startup.cs    |  193 +-
 .../OperationMessageExtensions.cs             |   39 +-
 tests/graphql.server.tests/ServerFacts.cs     |  314 ++--
 .../Usages/ServerBuilderUsageFacts.cs         |  429 +++--
 .../OperationMessageConverterFacts.cs         |  275 ++-
 .../webSockets/GraphQLWSProtocolFacts.cs      |  285 ++-
 .../webSockets/MessageSinkProtocol.cs         |   17 +-
 .../WebSocketConnection_ConnectionFacts.cs    |   81 +-
 .../webSockets/WebSocketFactsBase.cs          |  131 +-
 .../WebSocketServer_ProtocolFacts.cs          |   66 +-
 .../WebSocketServer_ReceiveMessageFacts.cs    |   93 +-
 .../WebSocketServer_SendMessageFacts.cs       |  101 +-
 tests/graphql.tests.data/DiffStyle.cs         |   11 +-
 .../ExecutionResultExtensions.cs              |   41 +-
 tests/graphql.tests.data/TestHelpers.cs       |   96 +-
 tests/graphql.tests.data/starwars/Starwars.cs |  139 +-
 tests/graphql.tests/Analysis/CostFacts.cs     |   24 +-
 tests/graphql.tests/EventsModel.cs            |  128 +-
 .../graphql.tests/Execution/NodePathFacts.cs  |  101 +-
 tests/graphql.tests/ExecutionPathFacts.cs     |  207 ++-
 tests/graphql.tests/ExecutorFacts.cs          |    4 +-
 .../ExtensionsImportProviderFacts.cs          |   73 +-
 tests/graphql.tests/ExtensionsRunnerFacts.cs  |   25 +-
 .../Introspection/IntrospectSchemaFacts.cs    |  356 ++--
 .../ImportProviders/FileSystemImportFacts.cs  |   49 +-
 tests/graphql.tests/SDL/GithubSchemaFacts.cs  |   47 +-
 tests/graphql.tests/StarwarsFacts.cs          |    2 +-
 .../Validation/ValidatorFacts.Arguments.cs    |    2 +-
 .../Validation/ValidatorFacts.Directives.cs   |    8 +-
 .../Validation/ValidatorFacts.Fields.cs       |   12 +-
 .../Validation/ValidatorFacts.Fragments.cs    |   38 +-
 ...alidatorFacts.ValidatorFacts.Selections.cs |    4 +-
 .../Validation/ValidatorFacts.cs              |  408 +++--
 .../GettingStarted.cs                         |  373 ++--
 .../GettingStartedServer.cs                   |  201 +--
 397 files changed, 21276 insertions(+), 25337 deletions(-)
 delete mode 100644 src/graphql.generator.core/CodeGenerator.cs
 delete mode 100644 src/graphql.generator.core/CodeModel.cs
 delete mode 100644 src/graphql.generator.core/Generators/InputObjectModelGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/InterfaceTypeControllerGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/InterfaceTypeControllerInterfaceGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/InterfaceTypeModelGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/NamedTypeGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ObjectTypeAbstractControllerBaseGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ObjectTypeControllerInterfaceGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ObjectTypeFieldResolversGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ObjectTypeModelGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/SchemaResolversGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ServiceCollectionExtensionGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/ServicesBuilderGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/UnionTypeControllerGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/UnionTypeControllerInterfaceGenerator.cs
 delete mode 100644 src/graphql.generator.core/Generators/UnionTypeModelGenerator.cs
 delete mode 100644 src/graphql.generator.core/Internal/SchemaBuilderExtensions.cs
 delete mode 100644 src/graphql.generator.core/Internal/TypeExtensions.cs
 delete mode 100644 src/graphql.generator.core/NameExtensions.cs
 delete mode 100644 src/graphql.generator.core/graphql.generator.core.csproj
 delete mode 100644 src/graphql.generator.tool/GenerateCommandOptions.cs
 delete mode 100644 src/graphql.generator.tool/Program.cs
 delete mode 100644 src/graphql.generator.tool/Properties/launchSettings.json
 delete mode 100644 src/graphql.generator.tool/graphql.generator.tool.csproj
 delete mode 100644 src/graphql.generator/SchemaGenerator.cs
 delete mode 100644 src/graphql.generator/build/graphql.xaml
 delete mode 100644 src/graphql.generator/build/tanka.graphql.generator.targets
 delete mode 100644 src/graphql.generator/build/tanka.graphql.generator.xaml
 delete mode 100644 src/graphql.generator/graphql.generator.csproj

diff --git a/Directory.Build.props b/Directory.Build.props
index 9360bf092..263d40170 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
+
 <Project>
   <PropertyGroup>
     <LangVersion>10.0</LangVersion>
@@ -10,4 +11,4 @@
     <PackageTags>graphql,tanka,signalr,apollo</PackageTags>
     <Authors>Pekka Heikura</Authors>
   </PropertyGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs b/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
index 5c137d81f..fb7069d82 100644
--- a/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/ExecutionBenchmarks.cs
@@ -8,151 +8,150 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class ExecutionBenchmarks
 {
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class ExecutionBenchmarks
-    {
-        private ExecutableDocument _mutation;
-        private ExecutableDocument _query;
-        private ISchema _schema;
-        private ExecutableDocument _subscription;
+    private ExecutableDocument _mutation;
+    private ExecutableDocument _query;
+    private ISchema _schema;
+    private ExecutableDocument _subscription;
 
-        [Params(1)] public int ExecutionCount { get; set; } = 1;
+    [Params(1)] public int ExecutionCount { get; set; } = 1;
 
-        [Benchmark]
-        public async Task Mutation_with_defaults()
+    [Benchmark]
+    public async Task Mutation_with_defaults()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
-                var result = await Executor.ExecuteAsync(new ExecutionOptions
-                {
-                    Document = _mutation,
-                    Schema = _schema
-                });
-
-                AssertResult(result.Errors);
-            }
+                Document = _mutation,
+                Schema = _schema
+            });
+
+            AssertResult(result.Errors);
         }
+    }
 
-        [Benchmark]
-        public async Task Mutation_without_validation()
+    [Benchmark]
+    public async Task Mutation_without_validation()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
-                var result = await Executor.ExecuteAsync(new ExecutionOptions
-                {
-                    Document = _mutation,
-                    Schema = _schema,
-                    Validate = null
-                });
-
-                AssertResult(result.Errors);
-            }
+                Document = _mutation,
+                Schema = _schema,
+                Validate = null
+            });
+
+            AssertResult(result.Errors);
         }
+    }
 
-        [Benchmark]
-        public async Task Query_with_defaults()
+    [Benchmark]
+    public async Task Query_with_defaults()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
-                var result = await Executor.ExecuteAsync(new ExecutionOptions
-                {
-                    Document = _query,
-                    Schema = _schema
-                });
-
-                AssertResult(result.Errors);
-            }
+                Document = _query,
+                Schema = _schema
+            });
+
+            AssertResult(result.Errors);
         }
+    }
 
-        [Benchmark(Baseline = true)]
-        public async Task Query_without_validation()
+    [Benchmark(Baseline = true)]
+    public async Task Query_without_validation()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var result = await Executor.ExecuteAsync(new ExecutionOptions
             {
-                var result = await Executor.ExecuteAsync(new ExecutionOptions
-                {
-                    Document = _query,
-                    Schema = _schema,
-                    Validate = null
-                });
-
-                AssertResult(result.Errors);
-            }
-        }
+                Document = _query,
+                Schema = _schema,
+                Validate = null
+            });
 
-        [GlobalSetup]
-        public void Setup()
-        {
-            _schema = Utils.InitializeSchema().Result;
-            _query = Utils.InitializeQuery();
-            _mutation = Utils.InitializeMutation();
-            _subscription = Utils.InitializeSubscription();
+            AssertResult(result.Errors);
         }
+    }
 
-        [Benchmark]
-        public async Task Subscribe_with_defaults()
+    [GlobalSetup]
+    public void Setup()
+    {
+        _schema = Utils.InitializeSchema().Result;
+        _query = Utils.InitializeQuery();
+        _mutation = Utils.InitializeMutation();
+        _subscription = Utils.InitializeSubscription();
+    }
+
+    [Benchmark]
+    public async Task Subscribe_with_defaults()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var cts = new CancellationTokenSource();
+            var result = await Executor.SubscribeAsync(new ExecutionOptions
             {
-                var cts = new CancellationTokenSource();
-                var result = await Executor.SubscribeAsync(new ExecutionOptions
-                {
-                    Document = _subscription,
-                    Schema = _schema
-                }, cts.Token);
-
-                AssertResult(result.Errors);
-                cts.Cancel();
-            }
+                Document = _subscription,
+                Schema = _schema
+            }, cts.Token);
+
+            AssertResult(result.Errors);
+            cts.Cancel();
         }
+    }
 
-        [Benchmark]
-        public async Task Subscribe_with_defaults_and_get_value()
+    [Benchmark]
+    public async Task Subscribe_with_defaults_and_get_value()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var cts = new CancellationTokenSource();
+            var result = await Executor.SubscribeAsync(new ExecutionOptions
             {
-                var cts = new CancellationTokenSource();
-                var result = await Executor.SubscribeAsync(new ExecutionOptions
-                {
-                    Document = _subscription,
-                    Schema = _schema
-                }, cts.Token);
-
-                AssertResult(result.Errors);
-
-                var value = await result.Source.Reader.ReadAsync(cts.Token);
-                AssertResult(value.Errors);
-                cts.Cancel();
-            }
+                Document = _subscription,
+                Schema = _schema
+            }, cts.Token);
+
+            AssertResult(result.Errors);
+
+            var value = await result.Source.Reader.ReadAsync(cts.Token);
+            AssertResult(value.Errors);
+            cts.Cancel();
         }
+    }
 
-        [Benchmark]
-        public async Task Subscribe_without_validation()
+    [Benchmark]
+    public async Task Subscribe_without_validation()
+    {
+        for (var i = 0; i < ExecutionCount; i++)
         {
-            for (var i = 0; i < ExecutionCount; i++)
+            var cts = new CancellationTokenSource();
+            var result = await Executor.SubscribeAsync(new ExecutionOptions
             {
-                var cts = new CancellationTokenSource();
-                var result = await Executor.SubscribeAsync(new ExecutionOptions
-                {
-                    Document = _subscription,
-                    Schema = _schema,
-                    Validate = null
-                }, cts.Token);
-
-                AssertResult(result.Errors);
-                cts.Cancel();
-            }
-        }
+                Document = _subscription,
+                Schema = _schema,
+                Validate = null
+            }, cts.Token);
 
-        private static void AssertResult(IEnumerable<ExecutionError> errors)
-        {
-            if (errors != null && errors.Any())
-                throw new InvalidOperationException(
-                    $"Execution failed. {string.Join("", errors.Select(e => e.Message))}");
+            AssertResult(result.Errors);
+            cts.Cancel();
         }
     }
+
+    private static void AssertResult(IEnumerable<ExecutionError> errors)
+    {
+        if (errors != null && errors.Any())
+            throw new InvalidOperationException(
+                $"Execution failed. {string.Join("", errors.Select(e => e.Message))}");
+    }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/LanguageLexerBenchmarks.cs b/benchmarks/graphql.benchmarks/LanguageLexerBenchmarks.cs
index b72d9de6c..f407153bd 100644
--- a/benchmarks/graphql.benchmarks/LanguageLexerBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/LanguageLexerBenchmarks.cs
@@ -5,44 +5,42 @@
 using GraphQLParser;
 using Tanka.GraphQL.Introspection;
 
-namespace Tanka.GraphQL.Benchmarks
-{
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [RankColumn]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class LanguageLexerBenchmarks
-    {
-        public string SimpleQuery { get; set; }
+namespace Tanka.GraphQL.Benchmarks;
 
-        public string IntrospectionQuery { get; set; }
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[RankColumn]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class LanguageLexerBenchmarks
+{
+    public string IntrospectionQuery { get; set; }
 
-        public Memory<byte> IntrospectionQueryMemory { get; set; }
+    public Memory<byte> IntrospectionQueryMemory { get; set; }
+    public string SimpleQuery { get; set; }
 
-        [GlobalSetup]
-        public void Setup()
-        {
-            IntrospectionQuery = Introspect.DefaultQuery;
-            IntrospectionQueryMemory = new Memory<byte>(Encoding.UTF8.GetBytes(IntrospectionQuery));
-            SimpleQuery = "query { field }";
-        }
+    [GlobalSetup]
+    public void Setup()
+    {
+        IntrospectionQuery = Introspect.DefaultQuery;
+        IntrospectionQueryMemory = new Memory<byte>(Encoding.UTF8.GetBytes(IntrospectionQuery));
+        SimpleQuery = "query { field }";
+    }
 
-        [Benchmark(Baseline = true)]
-        public void GraphQL_dotnet_Lexer_IntrospectionQuery()
-        {
-            var token = Lexer.Lex(IntrospectionQuery);
-            while (token.Kind != TokenKind.EOF)
-                token = Lexer.Lex(IntrospectionQuery, token.End);
-        }
+    [Benchmark(Baseline = true)]
+    public void GraphQL_dotnet_Lexer_IntrospectionQuery()
+    {
+        var token = Lexer.Lex(IntrospectionQuery);
+        while (token.Kind != TokenKind.EOF)
+            token = Lexer.Lex(IntrospectionQuery, token.End);
+    }
 
-        [Benchmark]
-        public void Tanka_GraphQL_Lexer_IntrospectionQuery()
+    [Benchmark]
+    public void Tanka_GraphQL_Lexer_IntrospectionQuery()
+    {
+        var lexer = Language.Lexer.Create(IntrospectionQueryMemory.Span);
+        while (lexer.Advance())
         {
-            var lexer = Language.Lexer.Create(IntrospectionQueryMemory.Span);
-            while (lexer.Advance())
-            {
-                //noop
-            }
+            //noop
         }
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/LanguageParserBenchmarks.cs b/benchmarks/graphql.benchmarks/LanguageParserBenchmarks.cs
index 54c3272c6..77e46a8e0 100644
--- a/benchmarks/graphql.benchmarks/LanguageParserBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/LanguageParserBenchmarks.cs
@@ -3,47 +3,45 @@
 using System.Text;
 using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Order;
-using GraphQLParser;
 using Tanka.GraphQL.Introspection;
 using Tanka.GraphQL.Language;
-using Lexer = GraphQLParser.Lexer;
+using Parser = GraphQLParser.Parser;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[RankColumn]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class LanguageParserBenchmarks
 {
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [RankColumn]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class LanguageParserBenchmarks
+    public Memory<byte> IntrospectionQueryMemory;
+    public string IntrospectionQuery { get; set; }
+
+    [GlobalSetup]
+    public void Setup()
     {
-        public Memory<byte> IntrospectionQueryMemory;
-        public string IntrospectionQuery { get; set; }
+        IntrospectionQuery = Introspect.DefaultQuery;
+        IntrospectionQueryMemory = new Memory<byte>(Encoding.UTF8.GetBytes(IntrospectionQuery));
+        var _ = Constants.Space;
+    }
 
-        [GlobalSetup]
-        public void Setup()
-        {
-            IntrospectionQuery = Introspect.DefaultQuery;
-            IntrospectionQueryMemory = new Memory<byte>(Encoding.UTF8.GetBytes(IntrospectionQuery));
-            var _ = Constants.Space;
-        }
+    [Benchmark(Baseline = true)]
+    public void GraphQL_dotnet_Parser_IntrospectionQuery()
+    {
+        var document = Parser.Parse(IntrospectionQuery);
 
-        [Benchmark(Baseline = true)]
-        public void GraphQL_dotnet_Parser_IntrospectionQuery()
-        {
-            var document = GraphQLParser.Parser.Parse(IntrospectionQuery);
-            
-            if (document.Definitions?.Any() == false)
-                throw new InvalidOperationException("Failed");
-        }
+        if (document.Definitions?.Any() == false)
+            throw new InvalidOperationException("Failed");
+    }
 
-        [Benchmark]
-        public void Tanka_GraphQL_Parser_IntrospectionQuery()
-        {
-            var parser = Language.Parser.Create(IntrospectionQueryMemory.Span);
-            var document = parser.ParseExecutableDocument();
+    [Benchmark]
+    public void Tanka_GraphQL_Parser_IntrospectionQuery()
+    {
+        var parser = Language.Parser.Create(IntrospectionQueryMemory.Span);
+        var document = parser.ParseExecutableDocument();
 
-            if (document.OperationDefinitions == null || !document.OperationDefinitions.Any())
-                throw new InvalidOperationException("Failed");
-        }
+        if (document.OperationDefinitions == null || !document.OperationDefinitions.Any())
+            throw new InvalidOperationException("Failed");
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/MethodBenchmarks.cs b/benchmarks/graphql.benchmarks/MethodBenchmarks.cs
index 8027414fe..2a3fdfe56 100644
--- a/benchmarks/graphql.benchmarks/MethodBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/MethodBenchmarks.cs
@@ -1,48 +1,42 @@
 using System;
-using System.Collections.Generic;
 using System.Text;
 using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Order;
-using Tanka.GraphQL.Language;
-using Tanka.GraphQL.Language.Internal;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[RankColumn]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class MethodBenchmarks
 {
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [RankColumn]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class MethodBenchmarks
-    {
-        [GlobalSetup]
-        public void Setup()
-        {
-            NameCount = 10_000;
-            Data = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("test test test"));
-        }
+    public ReadOnlyMemory<byte> Data { get; set; }
 
-        public ReadOnlyMemory<byte> Data { get; set; }
+    public int NameCount { get; set; }
 
-        public int NameCount { get; set; }
+    [GlobalSetup]
+    public void Setup()
+    {
+        NameCount = 10_000;
+        Data = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("test test test"));
+    }
 
-        [Benchmark(Baseline = true)]
-        public void Base()
+    [Benchmark(Baseline = true)]
+    public void Base()
+    {
+        for (var i = 0; i < NameCount; i++)
         {
-            for (int i = 0; i < NameCount; i++)
-            {
-                var str = Encoding.UTF8.GetString(Data.Span);
-            }
+            var str = Encoding.UTF8.GetString(Data.Span);
         }
+    }
 
-        [Benchmark()]
-        public void Cached()
-        {
-            var str = string.Empty;
-            for (int i = 0; i < NameCount; i++)
-            {
-                if (str == string.Empty)
-                    str = Encoding.UTF8.GetString(Data.Span);
-            }
-        }
+    [Benchmark]
+    public void Cached()
+    {
+        var str = string.Empty;
+        for (var i = 0; i < NameCount; i++)
+            if (str == string.Empty)
+                str = Encoding.UTF8.GetString(Data.Span);
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/Program.cs b/benchmarks/graphql.benchmarks/Program.cs
index 059b476b6..0ae8968e4 100644
--- a/benchmarks/graphql.benchmarks/Program.cs
+++ b/benchmarks/graphql.benchmarks/Program.cs
@@ -2,28 +2,26 @@
 using BenchmarkDotNet.Jobs;
 using BenchmarkDotNet.Running;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+public class Program
 {
-    public class Program
+    private static void Main(string[] args)
     {
-        private static void Main(string[] args)
-        {
-            var runner = BenchmarkSwitcher
-                .FromAssembly(typeof(Program).Assembly);
-
-            if (args.Length == 0)
-                runner.RunAll(GetGlobalConfig());
-            else
-            {
-                runner.Run(args, GetGlobalConfig());
-            }
+        var runner = BenchmarkSwitcher
+            .FromAssembly(typeof(Program).Assembly);
 
-        }
+        if (args.Length == 0)
+            runner.RunAll(GetGlobalConfig());
+        else
+            runner.Run(args, GetGlobalConfig());
+    }
 
-        static IConfig GetGlobalConfig()
-            => DefaultConfig.Instance
-                .WithArtifactsPath("artifacts/benchmarks")
-                .AddJob(Job.Default
-                    .AsDefault());
+    private static IConfig GetGlobalConfig()
+    {
+        return DefaultConfig.Instance
+            .WithArtifactsPath("artifacts/benchmarks")
+            .AddJob(Job.Default
+                .AsDefault());
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/RealWorldSchemas/ParseGitHubSchemaFacts.cs b/benchmarks/graphql.benchmarks/RealWorldSchemas/ParseGitHubSchemaFacts.cs
index 6835fdbad..ba6ad1ae9 100644
--- a/benchmarks/graphql.benchmarks/RealWorldSchemas/ParseGitHubSchemaFacts.cs
+++ b/benchmarks/graphql.benchmarks/RealWorldSchemas/ParseGitHubSchemaFacts.cs
@@ -3,33 +3,31 @@
 using System.Linq;
 using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Order;
+using Tanka.GraphQL.Language;
 
-namespace Tanka.GraphQL.Benchmarks.RealWorldSchemas
+namespace Tanka.GraphQL.Benchmarks.RealWorldSchemas;
+
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[RankColumn]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class ParseGitHubSchemaBenchmark
 {
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [RankColumn]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class ParseGitHubSchemaBenchmark
-    {
-        public byte[] GitHubBytes { get; private set; }
+    public byte[] GitHubBytes { get; private set; }
 
-        [GlobalSetup]
-        public void Setup()
-        {
-            GitHubBytes = File.ReadAllBytes("RealWorldSchemas/github.graphql");
-        }
+    [GlobalSetup]
+    public void Setup()
+    {
+        GitHubBytes = File.ReadAllBytes("RealWorldSchemas/github.graphql");
+    }
 
-        [Benchmark]
-        public void GitHub()
-        {
-            var parser = Language.Parser.Create(GitHubBytes);
-            var typeSystem = parser.ParseTypeSystemDocument();
+    [Benchmark]
+    public void GitHub()
+    {
+        var parser = Parser.Create(GitHubBytes);
+        var typeSystem = parser.ParseTypeSystemDocument();
 
-            if (typeSystem.TypeDefinitions == null || !typeSystem.TypeDefinitions.Any())
-            {
-                throw new Exception("It has types");
-            }
-        }
+        if (typeSystem.TypeDefinitions == null || !typeSystem.TypeDefinitions.Any())
+            throw new Exception("It has types");
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/SingleValueEventChannel.cs b/benchmarks/graphql.benchmarks/SingleValueEventChannel.cs
index c245d4fa5..5d74dafa7 100644
--- a/benchmarks/graphql.benchmarks/SingleValueEventChannel.cs
+++ b/benchmarks/graphql.benchmarks/SingleValueEventChannel.cs
@@ -2,15 +2,14 @@
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+public class SingleValueEventChannel : EventChannel<string>
 {
-    public class SingleValueEventChannel : EventChannel<string>
+    public override void OnSubscribed(ISubscriberResult subscription)
     {
-        public override void OnSubscribed(ISubscriberResult subscription)
-        {
-            subscription.WriteAsync("value", CancellationToken.None)
-                .AsTask()
-                .Wait();
-        }
+        subscription.WriteAsync("value", CancellationToken.None)
+            .AsTask()
+            .Wait();
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/Utils.cs b/benchmarks/graphql.benchmarks/Utils.cs
index 5fa8a733a..72a59541f 100644
--- a/benchmarks/graphql.benchmarks/Utils.cs
+++ b/benchmarks/graphql.benchmarks/Utils.cs
@@ -1,17 +1,17 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL.Benchmarks;
 
-namespace Tanka.GraphQL.Benchmarks
+public static class Utils
 {
-    public static class Utils
+    public static Task<ISchema> InitializeSchema()
     {
-        public static Task<ISchema> InitializeSchema()
-        {
-            var events = new SingleValueEventChannel();
-            var builder = new SchemaBuilder()
-                .Add(Parser.ParseTypeSystemDocument(
+        var events = new SingleValueEventChannel();
+        var builder = new SchemaBuilder()
+            .Add(Parser.ParseTypeSystemDocument(
                 @"
                     type Query {
                         simple: String
@@ -32,56 +32,56 @@ type Subscription {
                     }
                     "));
 
-            var resolvers = new ResolversMap()
+        var resolvers = new ResolversMap
+        {
             {
+                "Query", new FieldResolversMap
                 {
-                    "Query", new FieldResolversMap
-                    {
-                        {"simple", context => new ValueTask<IResolverResult>(Resolve.As("value"))}
-                    }
-                },
+                    { "simple", context => new ValueTask<IResolverResult>(Resolve.As("value")) }
+                }
+            },
+            {
+                "Mutation", new FieldResolversMap
                 {
-                    "Mutation", new FieldResolversMap
-                    {
-                        {"simple", context => new ValueTask<IResolverResult>(Resolve.As("value"))}
-                    }
-                },
+                    { "simple", context => new ValueTask<IResolverResult>(Resolve.As("value")) }
+                }
+            },
+            {
+                "Subscription", new FieldResolversMap
                 {
-                    "Subscription", new FieldResolversMap()
                     {
-                        {
-                            "simple", 
-                            (context, unsubscribe) => ResolveSync.Subscribe(events, unsubscribe), 
-                            context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))}
+                        "simple",
+                        (context, unsubscribe) => ResolveSync.Subscribe(events, unsubscribe),
+                        context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))
                     }
                 }
-            };
+            }
+        };
 
-            return builder.Build(resolvers, resolvers);
-        }
+        return builder.Build(resolvers, resolvers);
+    }
 
-        public static ExecutableDocument InitializeQuery()
-        {
-            return Parser.ParseDocument(@"
+    public static ExecutableDocument InitializeQuery()
+    {
+        return Parser.ParseDocument(@"
 {
     simple
 }");
-        }
+    }
 
-        public static ExecutableDocument InitializeMutation()
-        {
-            return Parser.ParseDocument(@"
+    public static ExecutableDocument InitializeMutation()
+    {
+        return Parser.ParseDocument(@"
 mutation {
     simple
 }");
-        }
+    }
 
-        public static ExecutableDocument InitializeSubscription()
-        {
-            return Parser.ParseDocument(@"
+    public static ExecutableDocument InitializeSubscription()
+    {
+        return Parser.ParseDocument(@"
 subscription {
     simple
 }");
-        }
     }
 }
\ No newline at end of file
diff --git a/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs b/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
index e011363fa..fff4831c3 100644
--- a/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
+++ b/benchmarks/graphql.benchmarks/ValidationBenchmarks.cs
@@ -3,42 +3,56 @@
 using System.Linq;
 using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Order;
-
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Validation;
 using Tanka.GraphQL.Language.Visitors;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL.Benchmarks
+namespace Tanka.GraphQL.Benchmarks;
+
+[Orderer(SummaryOrderPolicy.FastestToSlowest)]
+[MemoryDiagnoser]
+[MarkdownExporterAttribute.GitHub]
+public class ValidationBenchmarks
 {
-    [Orderer(SummaryOrderPolicy.FastestToSlowest)]
-    [MemoryDiagnoser]
-    [MarkdownExporterAttribute.GitHub]
-    public class ValidationBenchmarks
-    {
-        private List<CombineRule> _comparisonRules;
-        private List<CombineRule> _defaultRulesMap;
-        private ExecutableDocument _query;
-        private ExecutableDocument _query2;
-        private ISchema _schema;
+    private List<CombineRule> _comparisonRules;
+    private List<CombineRule> _defaultRulesMap;
+    private ExecutableDocument _query;
+    private ExecutableDocument _query2;
+    private ISchema _schema;
 
-        [GlobalSetup]
-        public void Setup()
+    [GlobalSetup]
+    public void Setup()
+    {
+        _schema = Utils.InitializeSchema().Result;
+        _query = Utils.InitializeQuery();
+        _defaultRulesMap = ExecutionRules.All.ToList();
+        _comparisonRules = new List<CombineRule>
         {
-            _schema = Utils.InitializeSchema().Result;
-            _query = Utils.InitializeQuery();
-            _defaultRulesMap = ExecutionRules.All.ToList();
-            _comparisonRules = new List<CombineRule>
-            {
-                ExecutionRules.R5211OperationNameUniqueness()
-            };
+            ExecutionRules.R5211OperationNameUniqueness()
+        };
 
-            _query2 = @"query Q1 { field1, field2, field3 { field1 field2 }} query Q2 { field1 }";
-        }
+        _query2 = @"query Q1 { field1, field2, field3 { field1 field2 }} query Q2 { field1 }";
+    }
+
+    [Benchmark(Baseline = true)]
+    public void Tanka_1()
+    {
+        var result = Validator.Validate(
+            _comparisonRules,
+            _schema,
+            _query);
+
+        if (!result.IsValid)
+            throw new InvalidOperationException(
+                $"Validation failed. {result}");
+    }
 
-        [Benchmark(Baseline = true)]
-        public void Tanka_1()
+    [Benchmark(Baseline = false)]
+    public void Tanka_1_1000()
+    {
+        for (var i = 0; i < 1000; i++)
         {
             var result = Validator.Validate(
                 _comparisonRules,
@@ -49,79 +63,63 @@ public void Tanka_1()
                 throw new InvalidOperationException(
                     $"Validation failed. {result}");
         }
+    }
 
-        [Benchmark(Baseline = false)]
-        public void Tanka_1_1000()
-        {
-            for (var i = 0; i < 1000; i++)
+    [Benchmark]
+    public void Tanka_2()
+    {
+        var rule = new OperationNameUniquenessRule();
+        var walker = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions
             {
-                var result = Validator.Validate(
-                    _comparisonRules,
-                    _schema,
-                    _query);
-
-                if (!result.IsValid)
-                    throw new InvalidOperationException(
-                        $"Validation failed. {result}");
+                ExecutableDocument =
+                {
+                    rule
+                },
+                OperationDefinition =
+                {
+                    rule
+                }
             }
-        }
+        );
 
-        [Benchmark]
-        public void Tanka_2()
+        walker.Visit(_query2);
+    }
+
+    [Benchmark]
+    public void Tanka_2__1000()
+    {
+        for (var i = 0; i < 1000; i++)
         {
-            var rule = new  OperationNameUniquenessRule();
+            var rule = new OperationNameUniquenessRule();
             var walker = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions()
+                new ExecutionDocumentWalkerOptions
+                {
+                    ExecutableDocument =
                     {
-                        ExecutableDocument =
-                        {
-                            rule
-                        },
-                        OperationDefinition =
-                        {
-                            rule
-                        }
-                    }
-                );
-
-            walker.Visit(_query2);
-        }
-
-        [Benchmark]
-        public void Tanka_2__1000()
-        {
-            for (var i = 0; i < 1000; i++)
-            {
-                var rule = new  OperationNameUniquenessRule();
-                var walker = new ReadOnlyExecutionDocumentWalker(
-                    new ExecutionDocumentWalkerOptions()
+                        rule
+                    },
+                    OperationDefinition =
                     {
-                        ExecutableDocument =
-                        {
-                            rule
-                        },
-                        OperationDefinition =
-                        {
-                            rule
-                        }
+                        rule
                     }
-                );
+                }
+            );
 
-                walker.Visit(_query2);
-            }
+            walker.Visit(_query2);
         }
+    }
 
-        //[Benchmark]
-        public void Validate_with_defaults()
-        {
-            var result = Validator.Validate(
-                _defaultRulesMap,
-                _schema,
-                _query);
+    //[Benchmark]
+    public void Validate_with_defaults()
+    {
+        var result = Validator.Validate(
+            _defaultRulesMap,
+            _schema,
+            _query);
 
-            if (!result.IsValid)
-                throw new InvalidOperationException(
-                    $"Validation failed. {result}");
-        }
+        if (!result.IsValid)
+            throw new InvalidOperationException(
+                $"Validation failed. {result}");
     }
 }
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/Controllers/GraphQLController.cs b/dev/GraphQL.Dev.Reviews/Controllers/GraphQLController.cs
index 301703a25..a16d8177e 100644
--- a/dev/GraphQL.Dev.Reviews/Controllers/GraphQLController.cs
+++ b/dev/GraphQL.Dev.Reviews/Controllers/GraphQLController.cs
@@ -1,51 +1,48 @@
 using System.Collections.Generic;
-using System.Net;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
 using Tanka.GraphQL;
 using Tanka.GraphQL.Server;
 
-namespace GraphQL.Dev.Reviews.Controllers
+namespace GraphQL.Dev.Reviews.Controllers;
+
+[ApiController]
+[Route("graphql")]
+public class GraphQLController : ControllerBase
 {
-    [ApiController]
-    [Route("graphql")]
-    public class GraphQLController : ControllerBase
+    private readonly ILogger<GraphQLController> _logger;
+    private readonly IQueryStreamService _query;
+
+    public GraphQLController(
+        IQueryStreamService query,
+        ILogger<GraphQLController> logger)
     {
-        private readonly IQueryStreamService _query;
-        private readonly ILogger<GraphQLController> _logger;
-
-        public GraphQLController(
-            IQueryStreamService query,
-            ILogger<GraphQLController> logger)
-        {
-            _query = query;
-            _logger = logger;
-        }
-
-        [HttpPost]
-        public async Task<ActionResult<ExecutionResult>> Get(OperationRequest operation)
-        {
-            var stream = await _query.QueryAsync(
-                new Query()
-                {
-                    Document = Parser.ParseDocument(operation.Query),
-                    Variables = operation.Variables,
-                    OperationName = operation.OperationName
-                }, HttpContext.RequestAborted);
-            var result = await stream.Reader.ReadAsync(HttpContext.RequestAborted);
-
-            return Ok(result);
-        }
+        _query = query;
+        _logger = logger;
     }
 
-    public class OperationRequest
+    [HttpPost]
+    public async Task<ActionResult<ExecutionResult>> Get(OperationRequest operation)
     {
-        public string OperationName { get; set; }
+        var stream = await _query.QueryAsync(
+            new Query
+            {
+                Document = operation.Query,
+                Variables = operation.Variables,
+                OperationName = operation.OperationName
+            }, HttpContext.RequestAborted);
+        var result = await stream.Reader.ReadAsync(HttpContext.RequestAborted);
 
-        public string Query { get; set; }
-
-        public Dictionary<string, object> Variables { get; set; }
+        return Ok(result);
     }
+}
+
+public class OperationRequest
+{
+    public string OperationName { get; set; }
+
+    public string Query { get; set; }
+
+    public Dictionary<string, object> Variables { get; set; }
 }
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/Program.cs b/dev/GraphQL.Dev.Reviews/Program.cs
index 5530f13f0..dbdd28fdb 100644
--- a/dev/GraphQL.Dev.Reviews/Program.cs
+++ b/dev/GraphQL.Dev.Reviews/Program.cs
@@ -1,26 +1,18 @@
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 
-namespace GraphQL.Dev.Reviews
+namespace GraphQL.Dev.Reviews;
+
+public class Program
 {
-    public class Program
+    public static void Main(string[] args)
     {
-        public static void Main(string[] args)
-        {
-            CreateHostBuilder(args).Build().Run();
-        }
+        CreateHostBuilder(args).Build().Run();
+    }
 
-        public static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .ConfigureWebHostDefaults(webBuilder =>
-                {
-                    webBuilder.UseStartup<Startup>();
-                });
+    public static IHostBuilder CreateHostBuilder(string[] args)
+    {
+        return Host.CreateDefaultBuilder(args)
+            .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); });
     }
-}
+}
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/Properties/launchSettings.json b/dev/GraphQL.Dev.Reviews/Properties/launchSettings.json
index c9ca74200..c00907095 100644
--- a/dev/GraphQL.Dev.Reviews/Properties/launchSettings.json
+++ b/dev/GraphQL.Dev.Reviews/Properties/launchSettings.json
@@ -27,4 +27,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/SchemaFactory.cs b/dev/GraphQL.Dev.Reviews/SchemaFactory.cs
index 36ce5b063..99810e45c 100644
--- a/dev/GraphQL.Dev.Reviews/SchemaFactory.cs
+++ b/dev/GraphQL.Dev.Reviews/SchemaFactory.cs
@@ -4,19 +4,17 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL;
 using Tanka.GraphQL.Extensions.ApolloFederation;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace GraphQL.Dev.Reviews
+namespace GraphQL.Dev.Reviews;
+
+public static class SchemaFactory
 {
-    public static class SchemaFactory
+    public static async ValueTask<ISchema> Create()
     {
-        public static async ValueTask<ISchema> Create()
-        {
-            var typeDefs = @"
+        var typeDefs = @"
 type Review @key(fields: ""id"") {
     id: ID!
     body: String
@@ -38,187 +36,181 @@ type Product @key(fields: ""upc"") @extends {
 type Query {
 }
 ";
-            var builder = new SchemaBuilder()
-                .AddFederationDirectives();
-
-            await builder.SdlAsync(typeDefs);
+        var builder = new SchemaBuilder()
+            .Add(typeDefs);
 
-            builder.UseResolversAndSubscribers(
-                new ObjectTypeMap
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions
+        {
+            SchemaBuildOptions = new SchemaBuildOptions
+            {
+                Resolvers = new ResolversMap
                 {
-                    ["User"] = new FieldResolversMap
+                    ["User"] = new()
                     {
-                        {"id", Resolve.PropertyOf<User>(u => u.ID)},
-                        {"username", UserUsername},
-                        {"reviews", UserReviews}
+                        { "id", Resolve.PropertyOf<User>(u => u.ID) },
+                        { "username", UserUsername },
+                        { "reviews", UserReviews }
                     },
-                    ["Review"] = new FieldResolversMap
+                    ["Review"] = new()
                     {
-                        {"id", Resolve.PropertyOf<Review>(r => r.ID)},
-                        {"body", Resolve.PropertyOf<Review>(r => r.Body)},
-                        {"author", ReviewAuthor},
-                        {"product", Resolve.PropertyOf<Review>(r => r.Product)}
+                        { "id", Resolve.PropertyOf<Review>(r => r.ID) },
+                        { "body", Resolve.PropertyOf<Review>(r => r.Body) },
+                        { "author", ReviewAuthor },
+                        { "product", Resolve.PropertyOf<Review>(r => r.Product) }
                     },
-                    ["Product"] = new FieldResolversMap
+                    ["Product"] = new()
                     {
-                        {"upc", Resolve.PropertyOf<Product>(p => p.Upc)},
-                        {"reviews", ProductReviews}
+                        { "upc", Resolve.PropertyOf<Product>(p => p.Upc) },
+                        { "reviews", ProductReviews }
                     }
-                });
+                }
+            },
+            ReferenceResolvers = new DictionaryReferenceResolversMap
+            {
+                ["User"] = UserReference,
+                ["Product"] = ProductReference
+            }
+        });
 
-            var federationBuilder = Federation
-                .ServiceFrom(builder.Build(),
-                    new DictionaryReferenceResolversMap()
-                    {
-                        ["User"] = UserReference,
-                        ["Product"] = ProductReference
-                    });
+        return schema;
+    }
 
-            return SchemaTools.MakeExecutableSchemaWithIntrospection(federationBuilder);
-        }
+    private static ValueTask<IResolverResult> UserUsername(IResolverContext context)
+    {
+        var user = (User)context.ObjectValue;
 
-        private static ValueTask<IResolverResult> UserUsername(IResolverContext context)
-        {
-            var user = (User) context.ObjectValue;
+        return ResolveSync.As(user.Username);
+    }
 
-            return ResolveSync.As(user.Username);
-        }
+    private static async ValueTask<ResolveReferenceResult> ProductReference(
+        IResolverContext context, TypeDefinition type, IReadOnlyDictionary<string, object> representation)
+    {
+        await Task.Delay(0);
 
-        private static async ValueTask<ResolveReferenceResult> ProductReference(
-            IResolverContext context, INamedType type, IReadOnlyDictionary<string, object> representation)
+        var upc = representation["upc"].ToString();
+        var product = new Product
         {
-            await Task.Delay(0);
+            Upc = upc
+        };
 
-            var upc = representation["upc"].ToString();
-            var product = new Product
-            {
-                Upc = upc
-            };
+        return new ResolveReferenceResult(type, product);
+    }
 
-            return new ResolveReferenceResult(type, product);
-        }
+    private static ValueTask<IResolverResult> ProductReviews(IResolverContext context)
+    {
+        var product = (Product)context.ObjectValue;
+        var reviews = Db.Reviews
+            .Where(r => r.Value.Product.Upc == product.Upc)
+            .Select(p => p.Value);
 
-        private static ValueTask<IResolverResult> ProductReviews(IResolverContext context)
-        {
-            var product = (Product) context.ObjectValue;
-            var reviews = Db.Reviews
-                .Where(r => r.Value.Product.Upc == product.Upc)
-                .Select(p => p.Value);
+        return ResolveSync.As(reviews);
+    }
 
-            return ResolveSync.As(reviews);
-        }
+    private static ValueTask<IResolverResult> ReviewAuthor(IResolverContext context)
+    {
+        var review = (Review)context.ObjectValue;
 
-        private static ValueTask<IResolverResult> ReviewAuthor(IResolverContext context)
+        return ResolveSync.As(new User
         {
-            var review = (Review) context.ObjectValue;
+            ID = review.AuthorID,
+            Username = Db.Usernames[review.AuthorID]
+        });
+    }
 
-            return ResolveSync.As(new User
-            {
-                ID = review.AuthorID,
-                Username = Db.Usernames[review.AuthorID]
-            });
-        }
+    private static ValueTask<IResolverResult> UserReviews(IResolverContext context)
+    {
+        var user = (User)context.ObjectValue;
+        var reviews = Db.Reviews
+            .Where(r => r.Value.AuthorID == user.ID)
+            .Select(r => r.Value);
 
-        private static ValueTask<IResolverResult> UserReviews(IResolverContext context)
-        {
-            var user = (User) context.ObjectValue;
-            var reviews = Db.Reviews
-                .Where(r => r.Value.AuthorID == user.ID)
-                .Select(r => r.Value);
+        return ResolveSync.As(reviews);
+    }
 
-            return ResolveSync.As(reviews);
-        }
+    private static async ValueTask<ResolveReferenceResult> UserReference(
+        IResolverContext context,
+        TypeDefinition type,
+        IReadOnlyDictionary<string, object> representation)
+    {
+        await Task.Delay(0);
 
-        private static async ValueTask<ResolveReferenceResult> UserReference(
-            IResolverContext context, 
-            INamedType type, 
-            IReadOnlyDictionary<string, object> representation)
-        {
-            await Task.Delay(0);
+        if (!representation.TryGetValue("id", out var idObj))
+            throw new ArgumentOutOfRangeException("id", "Representation is missing the required 'id' value");
 
-            if (!representation.TryGetValue("id", out var idObj))
-            {
-                throw new ArgumentOutOfRangeException("id", "Representation is missing the required 'id' value");
-            }
+        var userId = idObj.ToString();
 
-            var userId = idObj.ToString();
+        if (!Db.Usernames.TryGetValue(userId, out var username))
+            throw new ArgumentOutOfRangeException("id", $"User '{userId} not found");
 
-            if (!Db.Usernames.TryGetValue(userId, out var username))
-            {
-                throw new ArgumentOutOfRangeException("id", $"User '{userId} not found");
-            }
-
-            var user = new User
-            {
-                ID = userId,
-                Username = username
-            };
+        var user = new User
+        {
+            ID = userId,
+            Username = username
+        };
 
-            return new ResolveReferenceResult(type, user);
-        }
+        return new ResolveReferenceResult(type, user);
     }
+}
 
-    public static class Db
+public static class Db
+{
+    public static Dictionary<string, Review> Reviews { get; } = new()
     {
-        public static Dictionary<string, Review> Reviews { get; } = new Dictionary<string, Review>
+        ["1"] = new Review
         {
-            ["1"] = new Review
-            {
-                ID = "1",
-                AuthorID = "1",
-                Product = new Product {Upc = "1"},
-                Body = "Love it!"
-            },
-            ["2"] = new Review
-            {
-                ID = "2",
-                AuthorID = "1",
-                Product = new Product {Upc = "2"},
-                Body = "Too expensive!"
-            },
-            ["3"] = new Review
-            {
-                ID = "3",
-                AuthorID = "2",
-                Product = new Product {Upc = "3"},
-                Body = "Could be better"
-            },
-            ["4"] = new Review
-            {
-                ID = "4",
-                AuthorID = "2",
-                Product = new Product {Upc = "1"},
-                Body = "Prefer something else"
-            }
-        };
-
-        public static Dictionary<string, string> Usernames { get; } = new Dictionary<string, string>
+            ID = "1",
+            AuthorID = "1",
+            Product = new Product { Upc = "1" },
+            Body = "Love it!"
+        },
+        ["2"] = new Review
         {
-            ["1"] = "@ada",
-            ["2"] = "@complete"
-        };
-    }
+            ID = "2",
+            AuthorID = "1",
+            Product = new Product { Upc = "2" },
+            Body = "Too expensive!"
+        },
+        ["3"] = new Review
+        {
+            ID = "3",
+            AuthorID = "2",
+            Product = new Product { Upc = "3" },
+            Body = "Could be better"
+        },
+        ["4"] = new Review
+        {
+            ID = "4",
+            AuthorID = "2",
+            Product = new Product { Upc = "1" },
+            Body = "Prefer something else"
+        }
+    };
 
-    public class Review
+    public static Dictionary<string, string> Usernames { get; } = new()
     {
-        public string ID { get; set; }
+        ["1"] = "@ada",
+        ["2"] = "@complete"
+    };
+}
 
-        public string Body { get; set; }
+public class Review
+{
+    public string AuthorID { get; set; }
 
-        public string AuthorID { get; set; }
+    public string Body { get; set; }
+    public string ID { get; set; }
 
-        public Product Product { get; set; }
-    }
+    public Product Product { get; set; }
+}
 
-    public class User
-    {
-        public string ID { get; set; }
+public class User
+{
+    public string ID { get; set; }
 
-        public string Username { get; set; }
-    }
+    public string Username { get; set; }
+}
 
-    public class Product
-    {
-        public string Upc { get; set; }
-    }
+public class Product
+{
+    public string Upc { get; set; }
 }
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/Startup.cs b/dev/GraphQL.Dev.Reviews/Startup.cs
index 71d7f719a..a4c971d71 100644
--- a/dev/GraphQL.Dev.Reviews/Startup.cs
+++ b/dev/GraphQL.Dev.Reviews/Startup.cs
@@ -6,45 +6,44 @@
 using Tanka.GraphQL.Server;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace GraphQL.Dev.Reviews
+namespace GraphQL.Dev.Reviews;
+
+public class Startup
 {
-    public class Startup
+    public Startup(IConfiguration configuration)
+    {
+        Configuration = configuration;
+    }
+
+    public IConfiguration Configuration { get; }
+
+    // This method gets called by the runtime. Use this method to add services to the container.
+    public void ConfigureServices(IServiceCollection services)
+    {
+        services.AddTankaGraphQL()
+            .ConfigureSchema(SchemaFactory.Create);
+
+        services.AddControllers()
+            .AddJsonOptions(options =>
+            {
+                // required to serialize 
+                options.JsonSerializerOptions.Converters
+                    .Add(new ObjectDictionaryConverter());
+            });
+        ;
+    }
+
+    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
     {
-        public Startup(IConfiguration configuration)
-        {
-            Configuration = configuration;
-        }
-
-        public IConfiguration Configuration { get; }
-
-        // This method gets called by the runtime. Use this method to add services to the container.
-        public void ConfigureServices(IServiceCollection services)
-        {
-            services.AddTankaGraphQL()
-                .ConfigureSchema(SchemaFactory.Create);
-
-            services.AddControllers()
-                .AddJsonOptions(options =>
-                {
-                    // required to serialize 
-                    options.JsonSerializerOptions.Converters
-                        .Add(new ObjectDictionaryConverter());
-                });
-            ;
-        }
-
-        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
-        {
-            if (env.IsDevelopment()) app.UseDeveloperExceptionPage();
-
-            app.UseHttpsRedirection();
-
-            app.UseRouting();
-
-            app.UseAuthorization();
-
-            app.UseEndpoints(endpoints => { endpoints.MapControllers(); });
-        }
+        if (env.IsDevelopment()) app.UseDeveloperExceptionPage();
+
+        app.UseHttpsRedirection();
+
+        app.UseRouting();
+
+        app.UseAuthorization();
+
+        app.UseEndpoints(endpoints => { endpoints.MapControllers(); });
     }
 }
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/appsettings.Development.json b/dev/GraphQL.Dev.Reviews/appsettings.Development.json
index 4f30a00f8..a73ce3176 100644
--- a/dev/GraphQL.Dev.Reviews/appsettings.Development.json
+++ b/dev/GraphQL.Dev.Reviews/appsettings.Development.json
@@ -6,4 +6,4 @@
       "Microsoft.Hosting.Lifetime": "Information"
     }
   }
-}
+}
\ No newline at end of file
diff --git a/dev/GraphQL.Dev.Reviews/appsettings.json b/dev/GraphQL.Dev.Reviews/appsettings.json
index d9d9a9bff..222224e36 100644
--- a/dev/GraphQL.Dev.Reviews/appsettings.json
+++ b/dev/GraphQL.Dev.Reviews/appsettings.json
@@ -7,4 +7,4 @@
     }
   },
   "AllowedHosts": "*"
-}
+}
\ No newline at end of file
diff --git a/dev/graphql.dev.allocations/Program.cs b/dev/graphql.dev.allocations/Program.cs
index 5210b4aa4..d537c5fde 100644
--- a/dev/graphql.dev.allocations/Program.cs
+++ b/dev/graphql.dev.allocations/Program.cs
@@ -3,19 +3,18 @@
 using System.Linq;
 using Tanka.GraphQL.Language;
 
-namespace Tanka.GraphQL.Dev.Allocations
+namespace Tanka.GraphQL.Dev.Allocations;
+
+public class Program
 {
-    public class Program
+    private static void Main(string[] args)
     {
-        private static void Main(string[] args)
-        {
-            var parser = Parser.Create(File.ReadAllBytes("RealWorldSchemas/github.graphql"));
-            var typeSystem = parser.ParseTypeSystemDocument();
+        var parser = Parser.Create(File.ReadAllBytes("RealWorldSchemas/github.graphql"));
+        var typeSystem = parser.ParseTypeSystemDocument();
 
-            if (typeSystem.TypeDefinitions == null || !typeSystem.TypeDefinitions.Any())
-                throw new Exception("It has types");
+        if (typeSystem.TypeDefinitions == null || !typeSystem.TypeDefinitions.Any())
+            throw new Exception("It has types");
 
-            Console.WriteLine("Parsed");
-        }
+        Console.WriteLine("Parsed");
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/ChatResolverService.cs b/dev/graphql.dev.chat.data/ChatResolverService.cs
index d3c9f0490..e403aca73 100644
--- a/dev/graphql.dev.chat.data/ChatResolverService.cs
+++ b/dev/graphql.dev.chat.data/ChatResolverService.cs
@@ -1,49 +1,48 @@
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.Samples.Chat.Data.Domain;
 using Tanka.GraphQL.Server;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL.Samples.Chat.Data;
 
-namespace Tanka.GraphQL.Samples.Chat.Data
+public class ChatResolverService : IChatResolverService
 {
-    public class ChatResolverService : IChatResolverService
+    public async ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context)
+    {
+        var messages = await context.Use<IChat>().GetMessagesAsync(100);
+        return Resolve.As(messages);
+    }
+
+    public async ValueTask<IResolverResult> AddMessageAsync(IResolverContext context)
+    {
+        var input = context.GetObjectArgument<InputMessage>("message");
+        var message = await context.Use<IChat>().AddMessageAsync(
+            "1",
+            input.Content);
+
+        return Resolve.As(message);
+    }
+
+    public async ValueTask<IResolverResult> EditMessageAsync(IResolverContext context)
+    {
+        var id = context.GetArgument<string>("id");
+        var input = context.GetObjectArgument<InputMessage>("message");
+
+        var message = await context.Use<IChat>().EditMessageAsync(
+            id,
+            input.Content);
+
+        return Resolve.As(message);
+    }
+
+    public ValueTask<ISubscriberResult> StreamMessagesAsync(IResolverContext context, CancellationToken unsubscribe)
+    {
+        return context.Use<IChat>().JoinAsync(unsubscribe);
+    }
+
+    public ValueTask<IResolverResult> ResolveMessageAsync(IResolverContext context)
     {
-        public async ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context)
-        {
-            var messages = await context.Use<IChat>().GetMessagesAsync(100);
-            return Resolve.As(messages);
-        }
-
-        public async ValueTask<IResolverResult> AddMessageAsync(IResolverContext context)
-        {
-            var input = context.GetObjectArgument<InputMessage>("message");
-            var message = await context.Use<IChat>().AddMessageAsync(
-                "1",
-                input.Content);
-
-            return Resolve.As(message);
-        }
-
-        public async ValueTask<IResolverResult> EditMessageAsync(IResolverContext context)
-        {
-            var id = context.GetArgument<string>("id");
-            var input = context.GetObjectArgument<InputMessage>("message");
-
-            var message = await context.Use<IChat>().EditMessageAsync(
-                id,
-                input.Content);
-
-            return Resolve.As(message);
-        }
-
-        public ValueTask<ISubscriberResult> StreamMessagesAsync(IResolverContext context, CancellationToken unsubscribe)
-        {
-            return context.Use<IChat>().JoinAsync(unsubscribe);
-        }
-
-        public ValueTask<IResolverResult> ResolveMessageAsync(IResolverContext context)
-        {
-            return ResolveSync.As(context.ObjectValue);
-        }
+        return ResolveSync.As(context.ObjectValue);
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/ChatResolvers.cs b/dev/graphql.dev.chat.data/ChatResolvers.cs
index 0f9223dbf..ba992f16d 100644
--- a/dev/graphql.dev.chat.data/ChatResolvers.cs
+++ b/dev/graphql.dev.chat.data/ChatResolvers.cs
@@ -1,41 +1,40 @@
 using Tanka.GraphQL.Samples.Chat.Data.Domain;
 using static Tanka.GraphQL.ValueResolution.Resolve;
 
-namespace Tanka.GraphQL.Samples.Chat.Data
+namespace Tanka.GraphQL.Samples.Chat.Data;
+
+public class ChatResolvers : ResolversMap
 {
-    public class ChatResolvers : ObjectTypeMap
+    public ChatResolvers(IChatResolverService resolverService)
     {
-        public ChatResolvers(IChatResolverService resolverService)
+        this["Query"] = new FieldResolversMap
         {
-            this["Query"] = new FieldResolversMap
-            {
-                {"messages", resolverService.GetMessagesAsync}
-            };
+            { "messages", resolverService.GetMessagesAsync }
+        };
 
-            this["Mutation"] = new FieldResolversMap
-            {
-                {"addMessage", resolverService.AddMessageAsync},
-                {"editMessage", resolverService.EditMessageAsync}
-            };
+        this["Mutation"] = new FieldResolversMap
+        {
+            { "addMessage", resolverService.AddMessageAsync },
+            { "editMessage", resolverService.EditMessageAsync }
+        };
 
-            this["Subscription"] = new FieldResolversMap
-            {
-                {"messages", resolverService.StreamMessagesAsync, resolverService.ResolveMessageAsync}
-            };
+        this["Subscription"] = new FieldResolversMap
+        {
+            { "messages", resolverService.StreamMessagesAsync, resolverService.ResolveMessageAsync }
+        };
 
-            this["Message"] = new FieldResolversMap
-            {
-                {"id", PropertyOf<Message>(m => m.Id)},
-                {"from", PropertyOf<Message>(m => m.From)},
-                {"content", PropertyOf<Message>(m => m.Content)},
-                {"timestamp", PropertyOf<Message>(m => m.Timestamp)}
-            };
+        this["Message"] = new FieldResolversMap
+        {
+            { "id", PropertyOf<Message>(m => m.Id) },
+            { "from", PropertyOf<Message>(m => m.From) },
+            { "content", PropertyOf<Message>(m => m.Content) },
+            { "timestamp", PropertyOf<Message>(m => m.Timestamp) }
+        };
 
-            this["From"] = new FieldResolversMap
-            {
-                {"userId", PropertyOf<From>(f => f.UserId)},
-                {"name", PropertyOf<From>(f => f.Name)}
-            };
-        }
+        this["From"] = new FieldResolversMap
+        {
+            { "userId", PropertyOf<From>(f => f.UserId) },
+            { "name", PropertyOf<From>(f => f.Name) }
+        };
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/IChat.cs b/dev/graphql.dev.chat.data/IChat.cs
index 4dc35f88c..ed52574bb 100644
--- a/dev/graphql.dev.chat.data/IChat.cs
+++ b/dev/graphql.dev.chat.data/IChat.cs
@@ -4,88 +4,87 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Channels;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.Samples.Chat.Data.Domain;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL.Samples.Chat.Data;
 
-namespace Tanka.GraphQL.Samples.Chat.Data
+public interface IChat
 {
-    public interface IChat
-    {
-        Task<IEnumerable<Message>> GetMessagesAsync(
-            int latest);
+    Task<IEnumerable<Message>> GetMessagesAsync(
+        int latest);
 
-        Task<Message> AddMessageAsync(
-            string fromId,
-            string content);
+    Task<Message> AddMessageAsync(
+        string fromId,
+        string content);
 
-        Task<Message> EditMessageAsync(
-            string id,
-            string content);
+    Task<Message> EditMessageAsync(
+        string id,
+        string content);
 
-        ValueTask<ISubscriberResult> JoinAsync(CancellationToken unsubscribe);
-    }
+    ValueTask<ISubscriberResult> JoinAsync(CancellationToken unsubscribe);
+}
 
-    public class Chat : IChat
+public class Chat : IChat
+{
+    private readonly Queue<Message> _messages = new();
+    private readonly EventChannel<Message> _messageStream;
+
+    private int _lastId;
+
+    public Chat()
     {
-        private readonly Queue<Message> _messages = new Queue<Message>();
-        private readonly EventChannel<Message> _messageStream;
+        _messageStream = new EventChannel<Message>();
+    }
 
-        private int _lastId;
+    public async Task<IEnumerable<Message>> GetMessagesAsync(int latest)
+    {
+        await Task.Delay(0);
+        return _messages.Take(latest);
+    }
 
-        public Chat()
+    public async Task<Message> AddMessageAsync(
+        string fromId,
+        string content)
+    {
+        var from = await GetFromAsync(fromId);
+        var message = new Message
         {
-            _messageStream = new EventChannel<Message>();
-        }
+            Id = $"{++_lastId}",
+            Content = content,
+            Timestamp = DateTimeOffset.UtcNow,
+            From = from
+        };
 
-        public async Task<IEnumerable<Message>> GetMessagesAsync(int latest)
-        {
-            await Task.Delay(0);
-            return _messages.Take(latest);
-        }
+        _messages.Enqueue(message);
+        await _messageStream.WriteAsync(message);
+        return message;
+    }
 
-        public async Task<Message> AddMessageAsync(
-            string fromId,
-            string content)
-        {
-            var from = await GetFromAsync(fromId);
-            var message = new Message
-            {
-                Id = $"{++_lastId}",
-                Content = content,
-                Timestamp = DateTimeOffset.UtcNow,
-                From = from
-            };
-
-            _messages.Enqueue(message);
-            await _messageStream.WriteAsync(message);
-            return message;
-        }
-
-        public async Task<Message> EditMessageAsync(string id, string content)
-        {
-            await Task.Delay(0);
-            var originalMessage = _messages.SingleOrDefault(m => m.Id == id);
+    public async Task<Message> EditMessageAsync(string id, string content)
+    {
+        await Task.Delay(0);
+        var originalMessage = _messages.SingleOrDefault(m => m.Id == id);
 
-            if (originalMessage == null)
-                return null;
+        if (originalMessage == null)
+            return null;
 
-            originalMessage.Content = content;
-            return originalMessage;
-        }
+        originalMessage.Content = content;
+        return originalMessage;
+    }
 
-        public ValueTask<ISubscriberResult> JoinAsync(CancellationToken unsubscribe)
-        {
-            return new ValueTask<ISubscriberResult>(_messageStream.Subscribe(unsubscribe));
-        }
+    public ValueTask<ISubscriberResult> JoinAsync(CancellationToken unsubscribe)
+    {
+        return new ValueTask<ISubscriberResult>(_messageStream.Subscribe(unsubscribe));
+    }
 
-        private async Task<From> GetFromAsync(string fromId)
+    private async Task<From> GetFromAsync(string fromId)
+    {
+        await Task.Delay(0);
+        return new From
         {
-            await Task.Delay(0);
-            return new From
-            {
-                UserId = fromId,
-                Name = "From"
-            };
-        }
+            UserId = fromId,
+            Name = "From"
+        };
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/IChatResolverService.cs b/dev/graphql.dev.chat.data/IChatResolverService.cs
index 8151b5baa..abdd126ad 100644
--- a/dev/graphql.dev.chat.data/IChatResolverService.cs
+++ b/dev/graphql.dev.chat.data/IChatResolverService.cs
@@ -2,18 +2,17 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Samples.Chat.Data
+namespace Tanka.GraphQL.Samples.Chat.Data;
+
+public interface IChatResolverService
 {
-    public interface IChatResolverService
-    {
-        ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context);
+    ValueTask<IResolverResult> GetMessagesAsync(IResolverContext context);
 
-        ValueTask<IResolverResult> AddMessageAsync(IResolverContext context);
+    ValueTask<IResolverResult> AddMessageAsync(IResolverContext context);
 
-        ValueTask<IResolverResult> EditMessageAsync(IResolverContext context);
+    ValueTask<IResolverResult> EditMessageAsync(IResolverContext context);
 
-        ValueTask<ISubscriberResult> StreamMessagesAsync(IResolverContext context, CancellationToken cancellationToken);
+    ValueTask<ISubscriberResult> StreamMessagesAsync(IResolverContext context, CancellationToken cancellationToken);
 
-        ValueTask<IResolverResult> ResolveMessageAsync(IResolverContext context);
-    }
+    ValueTask<IResolverResult> ResolveMessageAsync(IResolverContext context);
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/domain/Schema.cs b/dev/graphql.dev.chat.data/domain/Schema.cs
index 76cf37970..e59284dd7 100644
--- a/dev/graphql.dev.chat.data/domain/Schema.cs
+++ b/dev/graphql.dev.chat.data/domain/Schema.cs
@@ -2,33 +2,30 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Samples.Chat.Data.Domain
-{
-    public class From
-    {
-        public string UserId { get; set; }
+namespace Tanka.GraphQL.Samples.Chat.Data.Domain;
 
-        public string Name { get; set; }
-    }
+public class From
+{
+    public string Name { get; set; }
+    public string UserId { get; set; }
+}
 
-    public class Message
-    {
-        public string Id { get; set; }
+public class Message
+{
+    public string Content { get; set; }
 
-        public From From { get; set; }
+    public From From { get; set; }
+    public string Id { get; set; }
 
-        public string Content { get; set; }
+    public DateTimeOffset Timestamp { get; set; }
+}
 
-        public DateTimeOffset Timestamp { get; set; }
-    }
+public class InputMessage : IReadFromObjectDictionary
+{
+    public string Content { get; set; }
 
-    public class InputMessage : IReadFromObjectDictionary
+    public void Read(IReadOnlyDictionary<string, object> source)
     {
-        public string Content { get; set; }
-
-        public void Read(IReadOnlyDictionary<string, object> source)
-        {
-            Content = source.GetValue<string>("content");
-        }
+        Content = source.GetValue<string>("content");
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/idl/IdlSchema.cs b/dev/graphql.dev.chat.data/idl/IdlSchema.cs
index efc794ca0..f5a602508 100644
--- a/dev/graphql.dev.chat.data/idl/IdlSchema.cs
+++ b/dev/graphql.dev.chat.data/idl/IdlSchema.cs
@@ -2,34 +2,31 @@
 using System.IO;
 using System.Reflection;
 using System.Text;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 
-namespace Tanka.GraphQL.Samples.Chat.Data.IDL
+namespace Tanka.GraphQL.Samples.Chat.Data.IDL;
+
+public static class IdlSchema
 {
-    public static class IdlSchema
+    public static SchemaBuilder Load()
     {
-        public static SchemaBuilder Load()
-        {
-            var idl = LoadIdlFromResource();
-            return new SchemaBuilder()
-                .Sdl(idl);
-        }
+        var idl = LoadIdlFromResource();
+        return new SchemaBuilder()
+            .Add(idl);
+    }
+
+    /// <summary>
+    ///     Load schema from embedded resource
+    /// </summary>
+    /// <returns></returns>
+    private static string LoadIdlFromResource()
+    {
+        var assembly = Assembly.GetExecutingAssembly();
+        var resourceStream =
+            assembly.GetManifestResourceStream("Tanka.GraphQL.Samples.Chat.Data.IDL.schema.graphql");
+
+        using var reader =
+            new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8);
 
-        /// <summary>
-        ///     Load schema from embedded resource
-        /// </summary>
-        /// <returns></returns>
-        private static string LoadIdlFromResource()
-        {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream =
-                assembly.GetManifestResourceStream("Tanka.GraphQL.Samples.Chat.Data.IDL.schema.graphql");
-            
-            using var reader =
-                new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8);
-            
-            return reader.ReadToEnd();
-        }
+        return reader.ReadToEnd();
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/Controllers/QueryController.cs b/dev/graphql.dev.chat.web/Controllers/QueryController.cs
index a00de062e..36cefbad2 100644
--- a/dev/graphql.dev.chat.web/Controllers/QueryController.cs
+++ b/dev/graphql.dev.chat.web/Controllers/QueryController.cs
@@ -2,33 +2,31 @@
 using Microsoft.AspNetCore.Mvc;
 using Tanka.GraphQL.Samples.Chat.Web.GraphQL;
 using Tanka.GraphQL.Server;
-using static Tanka.GraphQL.Parser;
 
-namespace Tanka.GraphQL.Samples.Chat.Web.Controllers
+namespace Tanka.GraphQL.Samples.Chat.Web.Controllers;
+
+[Route("api/graphql")]
+public class QueryController : Controller
 {
-    [Route("api/graphql")]
-    public class QueryController : Controller
-    {
-        private readonly IQueryStreamService _queryStreamService;
+    private readonly IQueryStreamService _queryStreamService;
 
-        public QueryController(IQueryStreamService queryStreamService)
-        {
-            _queryStreamService = queryStreamService;
-        }
+    public QueryController(IQueryStreamService queryStreamService)
+    {
+        _queryStreamService = queryStreamService;
+    }
 
-        [HttpPost]
-        public async Task<IActionResult> Post([FromBody] OperationRequest request)
+    [HttpPost]
+    public async Task<IActionResult> Post([FromBody] OperationRequest request)
+    {
+        var stream = await _queryStreamService.QueryAsync(new Query
         {
-            var stream = await _queryStreamService.QueryAsync(new Query
-            {
-                Document = ParseDocument(request.Query),
-                Variables = request.Variables,
-                OperationName = request.OperationName
-            }, Request.HttpContext.RequestAborted);
+            Document = request.Query,
+            Variables = request.Variables,
+            OperationName = request.OperationName
+        }, Request.HttpContext.RequestAborted);
 
-            var result = await stream.Reader.ReadAsync();
+        var result = await stream.Reader.ReadAsync();
 
-            return Ok(result);
-        }
+        return Ok(result);
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/GraphQL/ChatSchemas.cs b/dev/graphql.dev.chat.web/GraphQL/ChatSchemas.cs
index c1451130c..6a3b75984 100644
--- a/dev/graphql.dev.chat.web/GraphQL/ChatSchemas.cs
+++ b/dev/graphql.dev.chat.web/GraphQL/ChatSchemas.cs
@@ -1,28 +1,23 @@
 using Tanka.GraphQL.Extensions.Analysis;
 using Tanka.GraphQL.Samples.Chat.Data;
 using Tanka.GraphQL.Samples.Chat.Data.IDL;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL
+namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL;
+
+public class ChatSchemas
 {
-    public class ChatSchemas
+    public ChatSchemas(IChatResolverService resolverService)
     {
-        public ChatSchemas(IChatResolverService resolverService)
-        {
-            var builder = IdlSchema.Load();
-            var resolvers = new ChatResolvers(resolverService);
-
-            // add cost directive support to schema
-            builder.Include(CostAnalyzer.CostDirective);
+        var builder = IdlSchema.Load();
+        var resolvers = new ChatResolvers(resolverService);
 
-            // build  executable schema
-            Chat = SchemaTools.MakeExecutableSchemaWithIntrospection(
-                builder,
-                resolvers,
-                resolvers);
-        }
+        // add cost directive support to schema
+        builder.Add(CostAnalyzer.CostDirective);
 
-        public ISchema Chat { get; set; }
+        // build  executable schema
+        Chat = builder.Build(resolvers, resolvers).Result;
     }
+
+    public ISchema Chat { get; set; }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/GraphQL/OperationRequest.cs b/dev/graphql.dev.chat.web/GraphQL/OperationRequest.cs
index 54b2b7c45..7f988b84d 100644
--- a/dev/graphql.dev.chat.web/GraphQL/OperationRequest.cs
+++ b/dev/graphql.dev.chat.web/GraphQL/OperationRequest.cs
@@ -1,13 +1,12 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL
+namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL;
+
+public class OperationRequest
 {
-    public class OperationRequest
-    {
-        public string OperationName { get; set; }
+    public string OperationName { get; set; }
 
-        public string Query { get; set; }
+    public string Query { get; set; }
 
-        public Dictionary<string, object> Variables { get; set; }
-    }
+    public Dictionary<string, object> Variables { get; set; }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/Program.cs b/dev/graphql.dev.chat.web/Program.cs
index fe600e8af..6ff53c6bf 100644
--- a/dev/graphql.dev.chat.web/Program.cs
+++ b/dev/graphql.dev.chat.web/Program.cs
@@ -1,17 +1,18 @@
 using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
 
-namespace Tanka.GraphQL.Samples.Chat.Web
+namespace Tanka.GraphQL.Samples.Chat.Web;
+
+public class Program
 {
-    public class Program
+    public static void Main(string[] args)
     {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
+        CreateWebHostBuilder(args).Build().Run();
+    }
 
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
+    public static IWebHostBuilder CreateWebHostBuilder(string[] args)
+    {
+        return WebHost.CreateDefaultBuilder(args)
+            .UseStartup<Startup>();
     }
-}
+}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/Startup.cs b/dev/graphql.dev.chat.web/Startup.cs
index 431e7673c..1f9502b03 100644
--- a/dev/graphql.dev.chat.web/Startup.cs
+++ b/dev/graphql.dev.chat.web/Startup.cs
@@ -1,11 +1,7 @@
 using System.Linq;
-using System.Text.Json;
 using System.Threading.Tasks;
-using GraphQL.Server.Ui.Playground;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Http.Connections;
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.WebSockets;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -18,102 +14,98 @@
 using Tanka.GraphQL.Server.Links.DTOs;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Samples.Chat.Web
+namespace Tanka.GraphQL.Samples.Chat.Web;
+
+public class Startup
 {
-    public class Startup
+    public Startup(IConfiguration configuration, IWebHostEnvironment env)
     {
-        public Startup(IConfiguration configuration, IWebHostEnvironment env)
-        {
-            Configuration = configuration;
-            Env = env;
-        }
-
-        public IConfiguration Configuration { get; }
-        public IWebHostEnvironment Env { get; }
+        Configuration = configuration;
+        Env = env;
+    }
 
-        // This method gets called by the runtime. Use this method to add services to the container.
-        public void ConfigureServices(IServiceCollection services)
-        {
-            services.AddControllers()
-                .AddJsonOptions(options =>
-                {
-                    // required to serialize 
-                    options.JsonSerializerOptions.Converters
-                        .Add(new ObjectDictionaryConverter());
-                    options.JsonSerializerOptions.IgnoreNullValues = true;
-                });
+    public IConfiguration Configuration { get; }
+    public IWebHostEnvironment Env { get; }
 
-            // graphql
-            services.AddSingleton<IChat, Data.Chat>();
-            services.AddSingleton<IChatResolverService, ChatResolverService>();
-            services.AddSingleton<ChatSchemas>();
-            services.AddSingleton(provider => provider.GetRequiredService<ChatSchemas>().Chat);
+    // This method gets called by the runtime. Use this method to add services to the container.
+    public void ConfigureServices(IServiceCollection services)
+    {
+        services.AddControllers()
+            .AddJsonOptions(options =>
+            {
+                // required to serialize 
+                options.JsonSerializerOptions.Converters
+                    .Add(new ObjectDictionaryConverter());
+                options.JsonSerializerOptions.IgnoreNullValues = true;
+            });
 
-            // configure execution options
-            var tanka = services.AddTankaGraphQL()
-                .ConfigureRules(rules => rules.Concat(new[]
-                {
-                    CostAnalyzer.MaxCost(100, 1, true)
-                }).ToArray())
-                .ConfigureSchema<ISchema>(schema => new ValueTask<ISchema>(schema))
-                .ConfigureWebSockets();
+        // graphql
+        services.AddSingleton<IChat, Data.Chat>();
+        services.AddSingleton<IChatResolverService, ChatResolverService>();
+        services.AddSingleton<ChatSchemas>();
+        services.AddSingleton(provider => provider.GetRequiredService<ChatSchemas>().Chat);
 
-            if (Env.IsDevelopment())
+        // configure execution options
+        var tanka = services.AddTankaGraphQL()
+            .ConfigureRules(rules => rules.Concat(new[]
             {
-                tanka.AddExtension<TraceExtension>();
-            }
+                CostAnalyzer.MaxCost(100, 1, true)
+            }).ToArray())
+            .ConfigureSchema<ISchema>(schema => new ValueTask<ISchema>(schema))
+            .ConfigureWebSockets();
 
-            // signalr server
-            services.AddSignalR(options => options.EnableDetailedErrors = true)
-                .AddTankaGraphQL();
+        if (Env.IsDevelopment()) tanka.AddExtension<TraceExtension>();
 
-            // graphql-ws websocket server
-            // web socket server
-            services.AddWebSockets(options =>
-            {
-                options.AllowedOrigins.Add("https://localhost:5000");
-                options.AllowedOrigins.Add("https://localhost:3000");
-            });
+        // signalr server
+        services.AddSignalR(options => options.EnableDetailedErrors = true)
+            .AddTankaGraphQL();
+
+        // graphql-ws websocket server
+        // web socket server
+        services.AddWebSockets(options =>
+        {
+            options.AllowedOrigins.Add("https://localhost:5000");
+            options.AllowedOrigins.Add("https://localhost:3000");
+        });
 
-            // CORS is required for the graphql.samples.chat.ui React App
-            services.AddCors(options =>
+        // CORS is required for the graphql.samples.chat.ui React App
+        services.AddCors(options =>
+        {
+            options.AddDefaultPolicy(policy =>
             {
-                options.AddDefaultPolicy(policy =>
-                {
-                    policy.WithOrigins("http://localhost:3000");
-                    policy.AllowAnyHeader();
-                    policy.AllowAnyMethod();
-                    policy.AllowCredentials();
-                    //policy.WithHeaders("X-Requested-With", "authorization");
-                });
+                policy.WithOrigins("http://localhost:3000");
+                policy.AllowAnyHeader();
+                policy.AllowAnyMethod();
+                policy.AllowCredentials();
+                //policy.WithHeaders("X-Requested-With", "authorization");
             });
-        }
+        });
+    }
 
-        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+    {
+        if (env.IsDevelopment())
         {
-            if (env.IsDevelopment())
-            {
-                app.UseDeveloperExceptionPage();
-            }
-            else
-            {
-                app.UseExceptionHandler("/Error");
-                app.UseHsts();
-            }
+            app.UseDeveloperExceptionPage();
+        }
+        else
+        {
+            app.UseExceptionHandler("/Error");
+            app.UseHsts();
+        }
 
-            app.UseCors();
-            app.UseHttpsRedirection();
-            app.UseStaticFiles();
-            app.UseWebSockets();
+        app.UseCors();
+        app.UseHttpsRedirection();
+        app.UseStaticFiles();
+        app.UseWebSockets();
 
-            app.UseRouting();
-            app.UseEndpoints(endpoints =>
-            {
-                endpoints.MapTankaGraphQLSignalR("/graphql");
-                endpoints.MapTankaGraphQLWebSockets("/api/graphql");
+        app.UseRouting();
+        app.UseEndpoints(endpoints =>
+        {
+            endpoints.MapTankaGraphQLSignalR("/graphql");
+            endpoints.MapTankaGraphQLWebSockets("/api/graphql");
 
-                endpoints.MapControllers();
-            });
-        }
+            endpoints.MapControllers();
+        });
     }
 }
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/appsettings.Development.json b/dev/graphql.dev.chat.web/appsettings.Development.json
index e203e9407..f999bc20e 100644
--- a/dev/graphql.dev.chat.web/appsettings.Development.json
+++ b/dev/graphql.dev.chat.web/appsettings.Development.json
@@ -6,4 +6,4 @@
       "Microsoft": "Information"
     }
   }
-}
+}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/appsettings.json b/dev/graphql.dev.chat.web/appsettings.json
index f71f175a9..5cc9dce57 100644
--- a/dev/graphql.dev.chat.web/appsettings.json
+++ b/dev/graphql.dev.chat.web/appsettings.json
@@ -9,4 +9,4 @@
     }
   },
   "AllowedHosts": "*"
-}
+}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj b/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
index 83da3b854..d5924828b 100644
--- a/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
+++ b/dev/graphql.dev.chat.web/graphql.dev.chat.web.csproj
@@ -21,7 +21,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="GraphQL.Server.Ui.Playground" Version="5.0.2" />
+    <PackageReference Include="GraphQL.Server.Ui.Playground" Version="5.2.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/global.json b/global.json
index 2c63c0851..7a73a41bf 100644
--- a/global.json
+++ b/global.json
@@ -1,2 +1,2 @@
 {
-}
+}
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.ApolloFederation/Federation.cs b/src/GraphQL.Extensions.ApolloFederation/Federation.cs
index 30980f46d..7692452b1 100644
--- a/src/GraphQL.Extensions.ApolloFederation/Federation.cs
+++ b/src/GraphQL.Extensions.ApolloFederation/Federation.cs
@@ -12,9 +12,8 @@ namespace Tanka.GraphQL.Extensions.ApolloFederation;
 
 public record FederatedSchemaBuildOptions
 {
-    public SchemaBuildOptions? SchemaBuildOptions { get; init; }
-
     public IReferenceResolversMap? ReferenceResolvers { get; init; }
+    public SchemaBuildOptions? SchemaBuildOptions { get; init; }
 }
 
 public static class Federation
@@ -35,7 +34,7 @@ public static class Federation
     private static IReadOnlyDictionary<string, IValueConverter> NoConverters { get; } =
         new Dictionary<string, IValueConverter>(0);
 
-    private static object Service { get; } = new ();
+    private static object Service { get; } = new();
 
     public static Task<ISchema> BuildSubgraph(this SchemaBuilder builder, FederatedSchemaBuildOptions options)
     {
@@ -76,19 +75,23 @@ public static Task<ISchema> BuildSubgraph(this SchemaBuilder builder, FederatedS
                             "_service: _Service!"
                         }))));
 
-            resolvers += new ResolversMap()
+            resolvers += new ResolversMap
             {
-                {"Query", "_service", _ =>  ResolveSync.As(Service)},
-                {"Query", "_entities", CreateEntitiesResolver(options.ReferenceResolvers ?? new DictionaryReferenceResolversMap())},
+                { "Query", "_service", _ => ResolveSync.As(Service) },
+                {
+                    "Query", "_entities",
+                    CreateEntitiesResolver(options.ReferenceResolvers ?? new DictionaryReferenceResolversMap())
+                },
 
-                {"_Service", "sdl", CreateSdlResolver()}
+                { "_Service", "sdl", CreateSdlResolver() }
             };
         }
 
 
         schemaBuildOptions = schemaBuildOptions with
         {
-            ValueConverters = new Dictionary<string, IValueConverter>(schemaBuildOptions.ValueConverters ?? NoConverters)
+            ValueConverters =
+            new Dictionary<string, IValueConverter>(schemaBuildOptions.ValueConverters ?? NoConverters)
             {
                 { "_Any", new AnyScalarConverter() },
                 { "_FieldSet", new FieldSetScalarConverter() }
@@ -96,7 +99,7 @@ public static Task<ISchema> BuildSubgraph(this SchemaBuilder builder, FederatedS
             Resolvers = resolvers,
             Subscribers = resolvers,
             BuildTypesFromOrphanedExtensions = true
-        };      
+        };
 
         return builder.Build(schemaBuildOptions);
     }
diff --git a/src/GraphQL.Extensions.Tracing/TimeSpanExtensions.cs b/src/GraphQL.Extensions.Tracing/TimeSpanExtensions.cs
index 718a996bc..9549c07b2 100644
--- a/src/GraphQL.Extensions.Tracing/TimeSpanExtensions.cs
+++ b/src/GraphQL.Extensions.Tracing/TimeSpanExtensions.cs
@@ -1,12 +1,11 @@
 using System;
 
-namespace Tanka.GraphQL.Extensions.Tracing
+namespace Tanka.GraphQL.Extensions.Tracing;
+
+internal static class TimeSpanExtensions
 {
-    internal static class TimeSpanExtensions
+    public static long TotalNanoSeconds(this TimeSpan timeSpan)
     {
-        public static long TotalNanoSeconds(this TimeSpan timeSpan)
-        {
-            return (long)(timeSpan.TotalMilliseconds * 1000 * 1000);
-        }
+        return (long)(timeSpan.TotalMilliseconds * 1000 * 1000);
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.Tracing/TraceExtension.cs b/src/GraphQL.Extensions.Tracing/TraceExtension.cs
index 9516d735e..48e63842e 100644
--- a/src/GraphQL.Extensions.Tracing/TraceExtension.cs
+++ b/src/GraphQL.Extensions.Tracing/TraceExtension.cs
@@ -1,13 +1,12 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Extensions.Tracing
+namespace Tanka.GraphQL.Extensions.Tracing;
+
+public class TraceExtension : IExecutorExtension
 {
-    public class TraceExtension : IExecutorExtension
+    public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
     {
-        public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
-        {
-            IExtensionScope scope = new TraceExtensionScope(options);
-            return Task.FromResult(scope);
-        }
+        IExtensionScope scope = new TraceExtensionScope(options);
+        return Task.FromResult(scope);
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.Tracing/TraceExtensionRecord.cs b/src/GraphQL.Extensions.Tracing/TraceExtensionRecord.cs
index 1d9a66e57..a9855e8b3 100644
--- a/src/GraphQL.Extensions.Tracing/TraceExtensionRecord.cs
+++ b/src/GraphQL.Extensions.Tracing/TraceExtensionRecord.cs
@@ -1,45 +1,41 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Extensions.Tracing
-{
-    public class TraceExtensionRecord
-    {
-        public int Version => 1;
-
-        public DateTime StartTime { get; set; }
+namespace Tanka.GraphQL.Extensions.Tracing;
 
-        public DateTime EndTime { get; set; }
-
-        public long Duration { get; set; }
+public class TraceExtensionRecord
+{
+    public long Duration { get; set; }
 
-        public OperationTrace Parsing { get; set; }
+    public DateTime EndTime { get; set; }
 
-        public OperationTrace Validation { get; set; }
+    public ExecutionTrace Execution { get; set; } = new();
 
-        public ExecutionTrace Execution { get; set; } = new ExecutionTrace();
+    public OperationTrace Parsing { get; set; }
 
-        public class OperationTrace
-        {
-            public long StartOffset { get; set; }
+    public DateTime StartTime { get; set; }
 
-            public long Duration { get; set; }
-        }
+    public OperationTrace Validation { get; set; }
+    public int Version => 1;
 
-        public class ExecutionTrace
-        {
-            public List<ResolverTrace> Resolvers { get; set; } = new List<ResolverTrace>();
-        }
+    public class ExecutionTrace
+    {
+        public List<ResolverTrace> Resolvers { get; set; } = new();
+    }
 
-        public class ResolverTrace : OperationTrace
-        {
-            public List<object> Path { get; set; } = new List<object>();
+    public class OperationTrace
+    {
+        public long Duration { get; set; }
+        public long StartOffset { get; set; }
+    }
 
-            public string ParentType { get; set; }
+    public class ResolverTrace : OperationTrace
+    {
+        public string FieldName { get; set; }
 
-            public string FieldName { get; set; }
+        public string ParentType { get; set; }
+        public List<object> Path { get; set; } = new();
 
-            public string ReturnType { get; set; }
-        }
+        public string ReturnType { get; set; }
     }
 }
\ No newline at end of file
diff --git a/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs b/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
index 4a3491c04..e7e44d93b 100644
--- a/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
+++ b/src/GraphQL.Extensions.Tracing/TraceExtensionScope.cs
@@ -4,127 +4,125 @@
 using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.Validation;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL.Extensions.Tracing;
 
-namespace Tanka.GraphQL.Extensions.Tracing
+public class TraceExtensionScope : IExtensionScope
 {
-    public class TraceExtensionScope : IExtensionScope
+    private readonly List<TraceExtensionRecord.ResolverTrace> _resolverTraces = new();
+    private readonly DateTime _startTime;
+    private readonly Stopwatch _stopwatch;
+    private TimeSpan _parsingEnded;
+    private TimeSpan _parsingStarted;
+    private TimeSpan _validationEnded;
+    private TimeSpan _validationStarted;
+
+    public TraceExtensionScope(ExecutionOptions options) :
+        this(() => DateTime.UtcNow, options)
     {
-        private readonly DateTime _startTime;
-        private readonly Stopwatch _stopwatch;
-        private TimeSpan _validationStarted;
-        private TimeSpan _validationEnded;
-        private TimeSpan _parsingStarted;
-        private TimeSpan _parsingEnded;
-        private readonly List<TraceExtensionRecord.ResolverTrace> _resolverTraces = new List<TraceExtensionRecord.ResolverTrace>();
-
-        public TraceExtensionScope(ExecutionOptions options):
-            this(()=> DateTime.UtcNow, options)
-        {
-        }
+    }
 
-        public TraceExtensionScope(Func<DateTime> utcNow, ExecutionOptions options)
-        {
-            if (utcNow == null) throw new ArgumentNullException(nameof(utcNow));
+    public TraceExtensionScope(Func<DateTime> utcNow, ExecutionOptions options)
+    {
+        if (utcNow == null) throw new ArgumentNullException(nameof(utcNow));
 
-            _startTime = utcNow();
-            _stopwatch = Stopwatch.StartNew();
-        }
+        _startTime = utcNow();
+        _stopwatch = Stopwatch.StartNew();
+    }
 
-        public ValueTask BeginValidationAsync()
-        {
-            _validationStarted = _stopwatch.Elapsed;
-            return default;
-        }
+    public ValueTask BeginValidationAsync()
+    {
+        _validationStarted = _stopwatch.Elapsed;
+        return default;
+    }
 
-        public ValueTask EndValidationAsync(ValidationResult validationResult)
-        {
-            _validationEnded = _stopwatch.Elapsed;
-            return default;
-        }
+    public ValueTask EndValidationAsync(ValidationResult validationResult)
+    {
+        _validationEnded = _stopwatch.Elapsed;
+        return default;
+    }
 
-        public ValueTask EndExecuteAsync(IExecutionResult executionResult)
-        {
-            _stopwatch.Stop();
+    public ValueTask EndExecuteAsync(IExecutionResult executionResult)
+    {
+        _stopwatch.Stop();
 
-            // execution
-            var endTime = _startTime.Add(_stopwatch.Elapsed);
-            var duration = endTime - _startTime;
+        // execution
+        var endTime = _startTime.Add(_stopwatch.Elapsed);
+        var duration = endTime - _startTime;
 
-            // parsing
-            var parsingDuration = _parsingEnded - _parsingStarted;
+        // parsing
+        var parsingDuration = _parsingEnded - _parsingStarted;
 
-            //validation
-            var validationDuration = _validationEnded - _validationStarted;
+        //validation
+        var validationDuration = _validationEnded - _validationStarted;
 
-            var record = new TraceExtensionRecord()
+        var record = new TraceExtensionRecord
+        {
+            Duration = duration.TotalNanoSeconds(),
+            StartTime = _startTime,
+            EndTime = endTime,
+            Parsing = new TraceExtensionRecord.OperationTrace
             {
-                Duration = duration.TotalNanoSeconds(),
-                StartTime = _startTime,
-                EndTime = endTime,
-                Parsing = new TraceExtensionRecord.OperationTrace()
-                {
-                    StartOffset = _parsingStarted.TotalNanoSeconds(),
-                    Duration = parsingDuration.TotalNanoSeconds()
-                },
-                Validation = new TraceExtensionRecord.OperationTrace()
-                {
-                    StartOffset = _validationStarted.TotalNanoSeconds(),
-                    Duration = validationDuration.TotalNanoSeconds()
-                },
-                Execution = new TraceExtensionRecord.ExecutionTrace()
-                {
-                    Resolvers = _resolverTraces
-                }
-            };
-
-            executionResult.AddExtension("tracing", record);
-            return default;
-        }
+                StartOffset = _parsingStarted.TotalNanoSeconds(),
+                Duration = parsingDuration.TotalNanoSeconds()
+            },
+            Validation = new TraceExtensionRecord.OperationTrace
+            {
+                StartOffset = _validationStarted.TotalNanoSeconds(),
+                Duration = validationDuration.TotalNanoSeconds()
+            },
+            Execution = new TraceExtensionRecord.ExecutionTrace
+            {
+                Resolvers = _resolverTraces
+            }
+        };
 
-        public ValueTask BeginParseDocumentAsync()
-        {
-            _parsingStarted = _stopwatch.Elapsed;
-            return default;
-        }
+        executionResult.AddExtension("tracing", record);
+        return default;
+    }
 
-        public ValueTask EndParseDocumentAsync(ExecutableDocument document)
-        {
-            _parsingEnded = _stopwatch.Elapsed;
-            return default;
-        }
+    public ValueTask BeginParseDocumentAsync()
+    {
+        _parsingStarted = _stopwatch.Elapsed;
+        return default;
+    }
 
-        public ValueTask BeginResolveAsync(IResolverContext context)
-        {
-            var start = _stopwatch.Elapsed;
-            var record = new TraceExtensionRecord.ResolverTrace()
-            {
-                StartOffset = start.TotalNanoSeconds(),
-                ParentType = context.ObjectDefinition.Name,
-                FieldName = context.FieldName,
-                Path = context.Path.Segments.ToList(),
-                ReturnType = context.Field.Type.ToString()
-            };
-            context.Items.Add("trace", record);
-            return default;
-        }
+    public ValueTask EndParseDocumentAsync(ExecutableDocument document)
+    {
+        _parsingEnded = _stopwatch.Elapsed;
+        return default;
+    }
 
-        public ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
+    public ValueTask BeginResolveAsync(IResolverContext context)
+    {
+        var start = _stopwatch.Elapsed;
+        var record = new TraceExtensionRecord.ResolverTrace
         {
-            var end = _stopwatch.Elapsed.TotalNanoSeconds();
-
-            if (context.Items.TryGetValue("trace", out var recordItem))
-            {
+            StartOffset = start.TotalNanoSeconds(),
+            ParentType = context.ObjectDefinition.Name,
+            FieldName = context.FieldName,
+            Path = context.Path.Segments.ToList(),
+            ReturnType = context.Field.Type.ToString()
+        };
+        context.Items.Add("trace", record);
+        return default;
+    }
 
-                if (!(recordItem is TraceExtensionRecord.ResolverTrace record))
-                    return default;
+    public ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
+    {
+        var end = _stopwatch.Elapsed.TotalNanoSeconds();
 
-                record.Duration = (end - record.StartOffset);
-                _resolverTraces.Add(record);
-            }
+        if (context.Items.TryGetValue("trace", out var recordItem))
+        {
+            if (!(recordItem is TraceExtensionRecord.ResolverTrace record))
+                return default;
 
-            return default;
+            record.Duration = end - record.StartOffset;
+            _resolverTraces.Add(record);
         }
+
+        return default;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.generator.core/CodeGenerator.cs b/src/graphql.generator.core/CodeGenerator.cs
deleted file mode 100644
index 5709fdc7c..000000000
--- a/src/graphql.generator.core/CodeGenerator.cs
+++ /dev/null
@@ -1,109 +0,0 @@
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.DependencyInjection.Extensions;
-using Tanka.GraphQL.Generator.Core.Generators;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core
-{
-    public class CodeGenerator
-    {
-        private readonly string _inputFile;
-        private readonly string _targetNamespace;
-        private readonly string _schemaName;
-
-        public CodeGenerator(string inputFile, string targetNamespace)
-        {
-            _inputFile = inputFile;
-            _targetNamespace = targetNamespace;
-            _schemaName = Path.GetFileNameWithoutExtension(inputFile);
-        }
-
-        public async Task<CompilationUnitSyntax> Generate()
-        {
-            var schema = await LoadSchema();
-            var nsName = _targetNamespace;
-
-            var unit = CompilationUnit()
-                .WithUsings(List(GenerateUsings()))
-                .WithLeadingTrivia(Comment("#nullable enable"))
-                .WithMembers(SingletonList<MemberDeclarationSyntax>(
-                        NamespaceDeclaration(IdentifierName(nsName))
-                            .WithMembers(List(GenerateTypes(schema)))))
-                .NormalizeWhitespace()
-                .WithTrailingTrivia(
-                    CarriageReturnLineFeed, 
-                    Comment("#nullable disable"));
-
-            return unit;
-        }
-
-        private IEnumerable<UsingDirectiveSyntax> GenerateUsings()
-        {
-            return new[]
-                {
-                    UsingDirective(ParseName("System")),
-                    UsingDirective(ParseName(typeof(IEnumerable<>).Namespace)),
-                    UsingDirective(ParseName(typeof(ValueTask<>).Namespace)),
-                    UsingDirective(ParseName(typeof(CancellationToken).Namespace)),
-                    UsingDirective(ParseName(typeof(IServiceCollection).Namespace)),
-                    UsingDirective(ParseName(typeof(ServiceCollectionDescriptorExtensions).Namespace)),
-                    UsingDirective(ParseName("Tanka.GraphQL")),
-                    UsingDirective(ParseName("Tanka.GraphQL.ValueResolution")),
-                    UsingDirective(ParseName("Tanka.GraphQL.TypeSystem")),
-                    UsingDirective(ParseName("Tanka.GraphQL.Server"))
-                };
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateTypes(SchemaBuilder schema)
-        {
-            return schema.GetTypes<INamedType>()
-                .SelectMany(type => GenerateType(type, schema))
-                .Concat(GenerateSchema(schema))
-                .Concat(GenerateServiceBuilder(schema));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateServiceBuilder(SchemaBuilder schema)
-        {
-            yield return new ServicesBuilderGenerator(schema, _schemaName).Generate();
-            yield return new ServiceCollectionExtensionGenerator(schema, _schemaName).Generate();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateSchema(SchemaBuilder schema)
-        {
-            yield return new SchemaResolversGenerator(schema, _schemaName).Generate();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateType(INamedType type, SchemaBuilder schema)
-        {
-            return new NamedTypeGenerator(type, schema).Generate().ToList();
-        }
-        
-        private async Task<SchemaBuilder> LoadSchema()
-        {
-            var content = await File.ReadAllTextAsync(_inputFile);
-            var builder = await new SchemaBuilder()
-                //.Sdl(CodeDirectivesSdl)
-                .SdlAsync(content);
-
-            return builder;
-        }
-
-        /*public static string CodeDirectivesSdl = @"
-directive @gen(
-	asAbstract: Boolean! = false,
-	asProperty: Boolean! = false,
-	clrType: String = null
-) on FIELD_DEFINITION
-";*/
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/CodeModel.cs b/src/graphql.generator.core/CodeModel.cs
deleted file mode 100644
index ffac01add..000000000
--- a/src/graphql.generator.core/CodeModel.cs
+++ /dev/null
@@ -1,216 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core
-{
-    public class CodeModel
-    {
-        public static bool IsNullable(IType type)
-        {
-            if (type is NonNull)
-                return false;
-
-            if (type is List list)
-                return IsNullable(list.OfType);
-
-            return true;
-        }
-
-        public static string SelectFieldTypeName(SchemaBuilder schema, ComplexType ownerType, KeyValuePair<string, IField> field)
-        {
-            if (schema.TryGetDirective("gen", out _))
-            {
-                if (field.Value.HasDirective("gen"))
-                {
-                    var gen = field.Value.GetDirective("gen");
-
-                    var clrType = gen.GetArgument<string>("clrType");
-                    if (!string.IsNullOrEmpty(clrType))
-                        return clrType;
-                }
-            }
-
-            return SelectTypeName(field.Value.Type);
-        }
-
-        public static string SelectTypeName(IType type, bool nullable = true)
-        {
-            if (type is NonNull nonNull)
-            {
-                return SelectTypeName(nonNull.OfType, false);
-            }
-
-            if (type is List list)
-            {
-                var ofType = SelectTypeName(list.OfType);
-
-                if (nullable)
-                    return $"IEnumerable<{ofType}>?";
-
-                return $"IEnumerable<{ofType}>";
-            }
-
-            var typeName = SelectTypeName((INamedType)type);
-
-            if (nullable)
-                return $"{typeName}?";
-
-            return typeName;
-        }
-
-        public static string SelectTypeName(INamedType namedType)
-        {
-            return namedType switch
-            {
-                ScalarType scalar => SelectScalarTypeName(scalar),
-                ObjectType objectType => SelectObjectTypeName(objectType),
-                EnumType enumType => SelectEnumTypeName(enumType),
-                InputObjectType inputObjectType=> SelectInputObjectTypeName(inputObjectType),
-                InterfaceType interfaceType => SelectInterfaceTypeName(interfaceType),
-                UnionType unionType => SelectUnionTypeName(unionType),
-                _ => "object"
-            };
-        }
-
-        private static string SelectUnionTypeName(UnionType unionType)
-        {
-            return unionType.Name.ToModelInterfaceName();
-        }
-
-        private static string SelectInterfaceTypeName(InterfaceType interfaceType)
-        {
-            return interfaceType.Name.ToModelInterfaceName();
-        }
-
-        public static string SelectFieldTypeName(SchemaBuilder schema, InputObjectType inputObjectType, KeyValuePair<string, InputObjectField> fieldDefinition)
-        {
-            if (schema.TryGetDirective("gen", out _))
-            {
-                if (fieldDefinition.Value.HasDirective("gen"))
-                {
-                    var gen = fieldDefinition.Value.GetDirective("gen");
-
-                    var clrType = gen.GetArgument<string>("clrType");
-                    if (!string.IsNullOrEmpty(clrType))
-                        return clrType;
-                }
-            }
-
-            return SelectTypeName(fieldDefinition.Value.Type);
-        }
-
-        private static string SelectEnumTypeName(EnumType objectType)
-        {
-            return objectType.Name.ToModelName();
-        }
-
-        private static string SelectObjectTypeName(ObjectType objectType)
-        {
-            return objectType.Name.ToModelName();
-        }
-
-        private static string SelectScalarTypeName(ScalarType scalar)
-        {
-            if (StandardScalarToClrType.TryGetValue(scalar.Name, out var value))
-            {
-                return value;
-            }
-
-            return "object";
-        }
-
-        private static string SelectInputObjectTypeName(InputObjectType inputObjectType)
-        {
-            return inputObjectType.Name.ToModelName();
-        }
-
-        private static readonly Dictionary<string, string> StandardScalarToClrType = new Dictionary<string, string>()
-        {
-            [ScalarType.Float.Name] = "double",
-            [ScalarType.Boolean.Name] = "bool",
-            [ScalarType.ID.Name] = "string",
-            [ScalarType.Int.Name] = "int",
-            [ScalarType.String.Name] ="string"
-        };
-
-        public static SyntaxTriviaList ToXmlComment(string text)
-        {
-            if (string.IsNullOrWhiteSpace(text))
-                return SyntaxTriviaList.Empty;
-
-            var comment = $"/// <summary>{Environment.NewLine}"
-                          + string.Join(Environment.NewLine, text.Select(line => $"/// {line}"))
-                + $"/// </summary>{Environment.NewLine}";
-            return SyntaxFactory.ParseLeadingTrivia(comment);
-        }
-
-        public static bool IsAbstract(SchemaBuilder schema, ComplexType ownerType, KeyValuePair<string, IField> field)
-        {
-            // Check for gen override directive
-            if (schema.TryGetDirective("gen", out _))
-            {
-                if (field.Value.HasDirective("gen"))
-                {
-                    var gen = field.Value.GetDirective("gen");
-
-                    var asAbstract = gen.GetArgument<bool>("asAbstract");
-
-                    if (asAbstract)
-                        return true;
-
-                    var asProperty = gen.GetArgument<bool>("asProperty");
-
-                    if (asProperty)
-                        return false;
-                }
-            }
-
-            var args = field.Value.Arguments;
-
-            // if field has arguments then automatically require implementation for it
-            if (args.Any())
-                return true;
-
-            var type = field.Value.Type;
-
-            // if complex type (Object, Interface) then requires implementation
-            if (type.Unwrap() is ComplexType)
-                return true;
-
-            // unions require implementation as they require the actual graph type to be
-            // given
-            if (type.Unwrap() is UnionType)
-                return true;
-
-            if (schema.IsSubscriptionType(ownerType))
-                return true;
-
-            return false;
-        }
-
-        public static MemberDeclarationSyntax TypenameProperty(string name)
-        {
-            return PropertyDeclaration(
-                    PredefinedType(
-                        Token(SyntaxKind.StringKeyword)),
-                    Identifier("__Typename"))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithExpressionBody(
-                    ArrowExpressionClause(
-                        LiteralExpression(
-                            SyntaxKind.StringLiteralExpression,
-                            Literal(name))))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/InputObjectModelGenerator.cs b/src/graphql.generator.core/Generators/InputObjectModelGenerator.cs
deleted file mode 100644
index 22f139a73..000000000
--- a/src/graphql.generator.core/Generators/InputObjectModelGenerator.cs
+++ /dev/null
@@ -1,143 +0,0 @@
-using System.Collections.Generic;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class InputObjectModelGenerator
-    {
-        private readonly InputObjectType _inputObjectType;
-        private readonly SchemaBuilder _schema;
-
-        public InputObjectModelGenerator(InputObjectType inputObjectType, SchemaBuilder schema)
-        {
-            _inputObjectType = inputObjectType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var name = _inputObjectType.Name.ToModelName();
-            return ClassDeclaration(name)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)
-                    )
-                )
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(IdentifierName(nameof(IReadFromObjectDictionary))
-                            )
-                        )
-                    ))
-                .WithMembers(List(GenerateFields()));
-        }
-
-        private MemberDeclarationSyntax GenerateRead()
-        {
-            return MethodDeclaration(
-                    PredefinedType(
-                        Token(SyntaxKind.VoidKeyword)),
-                    Identifier(nameof(IReadFromObjectDictionary.Read)))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SingletonSeparatedList(
-                            Parameter(
-                                    Identifier("source"))
-                                .WithType(
-                                    GenericName(
-                                            Identifier("IReadOnlyDictionary"))
-                                        .WithTypeArgumentList(
-                                            TypeArgumentList(
-                                                SeparatedList<TypeSyntax>(
-                                                    new SyntaxNodeOrToken[]
-                                                    {
-                                                        PredefinedType(
-                                                            Token(SyntaxKind.StringKeyword)),
-                                                        Token(SyntaxKind.CommaToken),
-                                                        PredefinedType(
-                                                            Token(SyntaxKind.ObjectKeyword))
-                                                    })))))))
-                .WithBody(Block(GenerateReadMethodBody()));
-        }
-
-        private IEnumerable<StatementSyntax> GenerateReadMethodBody()
-        {
-            var fields = _schema.GetInputFields(_inputObjectType);
-
-            foreach (var fieldDefinition in fields)
-            {
-                var fieldName = fieldDefinition.Key.ToFieldResolverName();
-                var rawFieldName = fieldDefinition.Key;
-                var fieldTypeName = CodeModel.SelectFieldTypeName(_schema, _inputObjectType, fieldDefinition);
-                yield return ExpressionStatement(
-                    AssignmentExpression(
-                        SyntaxKind.SimpleAssignmentExpression,
-                        IdentifierName(fieldName),
-                        InvocationExpression(
-                                MemberAccessExpression(
-                                    SyntaxKind.SimpleMemberAccessExpression,
-                                    IdentifierName("source"),
-                                    GenericName(
-                                            Identifier("GetValue"))
-                                        .WithTypeArgumentList(
-                                            TypeArgumentList(
-                                                SingletonSeparatedList(
-                                                    ParseTypeName(fieldTypeName))))))
-                            .WithArgumentList(
-                                ArgumentList(
-                                    SingletonSeparatedList(
-                                        Argument(
-                                            LiteralExpression(
-                                                SyntaxKind.StringLiteralExpression,
-                                                Literal(rawFieldName))))))));
-            }
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateFields()
-        {
-            yield return CodeModel.TypenameProperty(_inputObjectType.Name);
-
-            var fields = _schema.GetInputFields(_inputObjectType);
-
-            foreach (var fieldDefinition in fields)
-            {
-                var fieldName = fieldDefinition.Key.ToFieldResolverName();
-                var fieldTypeName = CodeModel.SelectFieldTypeName(_schema, _inputObjectType, fieldDefinition);
-                yield return PropertyDeclaration(
-                        IdentifierName(fieldTypeName),
-                        Identifier(fieldName))
-                    .WithModifiers(
-                        TokenList(
-                            Token(SyntaxKind.PublicKeyword)))
-                    .WithLeadingTrivia(CodeModel.ToXmlComment(fieldDefinition.Value.Description))
-                    .WithAccessorList(
-                        AccessorList(
-                            List(
-                                new[]
-                                {
-                                    AccessorDeclaration(
-                                            SyntaxKind.GetAccessorDeclaration)
-                                        .WithSemicolonToken(
-                                            Token(SyntaxKind.SemicolonToken)),
-                                    AccessorDeclaration(
-                                            SyntaxKind.SetAccessorDeclaration)
-                                        .WithSemicolonToken(
-                                            Token(SyntaxKind.SemicolonToken))
-                                })));
-            }
-
-            yield return GenerateRead();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/InterfaceTypeControllerGenerator.cs b/src/graphql.generator.core/Generators/InterfaceTypeControllerGenerator.cs
deleted file mode 100644
index 03236d9ee..000000000
--- a/src/graphql.generator.core/Generators/InterfaceTypeControllerGenerator.cs
+++ /dev/null
@@ -1,83 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class InterfaceTypeControllerGenerator
-    {
-        private readonly InterfaceType _interfaceType;
-        private readonly SchemaBuilder _schema;
-
-        public InterfaceTypeControllerGenerator(InterfaceType interfaceType, SchemaBuilder schema)
-        {
-            _interfaceType = interfaceType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var controllerName = _interfaceType.Name
-                .ToControllerName();
-
-            var controllerInterfaceName = _interfaceType.Name
-                .ToModelInterfaceName()
-                .ToControllerName();
-            
-            var modelName = _interfaceType.Name
-                .ToModelInterfaceName();
-
-            return ClassDeclaration(controllerName)
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.PartialKeyword)))
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(
-                                IdentifierName(controllerInterfaceName)))))
-                .WithMembers(
-                    SingletonList<MemberDeclarationSyntax>(
-                        MethodDeclaration(
-                                IdentifierName("INamedType"),
-                                Identifier("IsTypeOf"))
-                            .WithModifiers(
-                                TokenList(
-                                    Token(SyntaxKind.PublicKeyword)))
-                            .WithParameterList(
-                                ParameterList(
-                                    SeparatedList<ParameterSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Parameter(
-                                                    Identifier("instance"))
-                                                .WithType(
-                                                    IdentifierName(modelName)),
-                                            Token(SyntaxKind.CommaToken),
-                                            Parameter(
-                                                    Identifier("schema"))
-                                                .WithType(
-                                                    IdentifierName("ISchema"))
-                                        })))
-                            .WithBody(
-                                Block(
-                                    SingletonList<StatementSyntax>(
-                                        ReturnStatement(
-                                            InvocationExpression(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        IdentifierName("schema"),
-                                                        IdentifierName("GetNamedType")))
-                                                .WithArgumentList(
-                                                    ArgumentList(
-                                                        SingletonSeparatedList(
-                                                            Argument(
-                                                                MemberAccessExpression(
-                                                                    SyntaxKind.SimpleMemberAccessExpression,
-                                                                    IdentifierName("instance"),
-                                                                    IdentifierName("__Typename"))))))))))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/InterfaceTypeControllerInterfaceGenerator.cs b/src/graphql.generator.core/Generators/InterfaceTypeControllerInterfaceGenerator.cs
deleted file mode 100644
index 0d4dcd2ab..000000000
--- a/src/graphql.generator.core/Generators/InterfaceTypeControllerInterfaceGenerator.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class InterfaceTypeControllerInterfaceGenerator
-    {
-        private readonly InterfaceType _interfaceType;
-        private readonly SchemaBuilder _schema;
-
-        public InterfaceTypeControllerInterfaceGenerator(InterfaceType interfaceType, SchemaBuilder schema)
-        {
-            _interfaceType = interfaceType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var modelControllerName = _interfaceType.Name.ToModelInterfaceName().ToControllerName();
-            var modelName = _interfaceType.Name.ToModelInterfaceName();
-            return InterfaceDeclaration(modelControllerName)
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.PartialKeyword)))
-                .WithMembers(
-                    SingletonList<MemberDeclarationSyntax>(
-                        MethodDeclaration(
-                                IdentifierName("INamedType"),
-                                Identifier("IsTypeOf"))
-                            .WithParameterList(
-                                ParameterList(
-                                    SeparatedList<ParameterSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Parameter(
-                                                    Identifier("instance"))
-                                                .WithType(
-                                                    IdentifierName($"{modelName}")),
-                                            Token(SyntaxKind.CommaToken),
-                                            Parameter(
-                                                    Identifier("schema"))
-                                                .WithType(
-                                                    IdentifierName("ISchema"))
-                                        })))
-                            .WithSemicolonToken(
-                                Token(SyntaxKind.SemicolonToken))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/InterfaceTypeModelGenerator.cs b/src/graphql.generator.core/Generators/InterfaceTypeModelGenerator.cs
deleted file mode 100644
index 43e10bc21..000000000
--- a/src/graphql.generator.core/Generators/InterfaceTypeModelGenerator.cs
+++ /dev/null
@@ -1,83 +0,0 @@
-using System.Collections.Generic;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class InterfaceTypeModelGenerator
-    {
-        private readonly InterfaceType _interfaceType;
-        private readonly SchemaBuilder _schema;
-
-        public InterfaceTypeModelGenerator(InterfaceType interfaceType, SchemaBuilder schema)
-        {
-            _interfaceType = interfaceType;
-            _schema = schema;
-        }
-
-         public MemberDeclarationSyntax Generate()
-        {
-            var modelName = _interfaceType.Name.ToModelInterfaceName();
-            return InterfaceDeclaration(modelName)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithLeadingTrivia(CodeModel.ToXmlComment(_interfaceType.Description))
-                .WithMembers(
-                    List(GenerateProperties()));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateProperties()
-        {
-            var props = new List<MemberDeclarationSyntax>();
-            props.Add(CodeModel.TypenameProperty(_interfaceType.Name));
-
-            var fields = _schema.GetFields(_interfaceType);
-
-            foreach (var field in fields)
-            {
-                if (ObjectTypeAbstractControllerBaseGenerator.IsAbstract(
-                    _schema,
-                    _interfaceType,
-                    field))
-                    continue;
-
-                props.Add(GenerateProperty(field));
-            }
-
-            return props;
-        }
-
-        private MemberDeclarationSyntax GenerateProperty(KeyValuePair<string, IField> field)
-        {
-            var propertyName = field.Key.ToFieldResolverName();
-            var typeName = CodeModel.SelectFieldTypeName(_schema, _interfaceType, field);
-            return PropertyDeclaration(
-                    IdentifierName(typeName),
-                    Identifier(propertyName))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithLeadingTrivia(CodeModel.ToXmlComment(field.Value.Description))
-                .WithAccessorList(
-                    AccessorList(
-                        List(
-                            new[]
-                            {
-                                AccessorDeclaration(
-                                        SyntaxKind.GetAccessorDeclaration)
-                                    .WithSemicolonToken(
-                                        Token(SyntaxKind.SemicolonToken)),
-                                /*AccessorDeclaration(
-                                        SyntaxKind.SetAccessorDeclaration)
-                                    .WithSemicolonToken(
-                                        Token(SyntaxKind.SemicolonToken))*/
-                            })));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/NamedTypeGenerator.cs b/src/graphql.generator.core/Generators/NamedTypeGenerator.cs
deleted file mode 100644
index 97d58c8f7..000000000
--- a/src/graphql.generator.core/Generators/NamedTypeGenerator.cs
+++ /dev/null
@@ -1,69 +0,0 @@
-using System.Collections.Generic;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class NamedTypeGenerator
-    {
-        private readonly SchemaBuilder _schema;
-        private readonly INamedType _type;
-
-        public NamedTypeGenerator(INamedType type, SchemaBuilder schema)
-        {
-            _type = type;
-            _schema = schema;
-        }
-
-        public IEnumerable<MemberDeclarationSyntax> Generate()
-        {
-            var types = new List<MemberDeclarationSyntax>();
-
-            switch (_type)
-            {
-                case ObjectType objectType:
-                    types.AddRange(GenerateObjectType(objectType));
-                    break;
-                case InputObjectType inputObjectType:
-                    types.AddRange(GenerateInputObjectType(inputObjectType));
-                    break;
-                case InterfaceType interfaceType:
-                    types.AddRange(GenerateInterfaceType(interfaceType));
-                    break;
-                case UnionType unionType:
-                    types.AddRange(GenerateUnionType(unionType));
-                    break;
-            }
-
-            return types;
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateUnionType(UnionType unionType)
-        {
-            yield return new UnionTypeModelGenerator(unionType, _schema).Generate();
-            yield return new UnionTypeControllerInterfaceGenerator(unionType, _schema).Generate();
-            yield return new UnionTypeControllerGenerator(unionType, _schema).Generate();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateInterfaceType(InterfaceType interfaceType)
-        {
-            yield return new InterfaceTypeModelGenerator(interfaceType, _schema).Generate();
-            yield return new InterfaceTypeControllerInterfaceGenerator(interfaceType, _schema).Generate();
-            yield return new InterfaceTypeControllerGenerator(interfaceType, _schema).Generate();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateObjectType(ObjectType objectType)
-        {
-            yield return new ObjectTypeControllerInterfaceGenerator(objectType, _schema).Generate();
-            yield return new ObjectTypeFieldResolversGenerator(objectType, _schema).Generate();
-            yield return new ObjectTypeAbstractControllerBaseGenerator(objectType, _schema).Generate();
-            yield return new ObjectTypeModelGenerator(objectType, _schema).Generate();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateInputObjectType(InputObjectType inputObjectType)
-        {
-            yield return new InputObjectModelGenerator(inputObjectType, _schema).Generate();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ObjectTypeAbstractControllerBaseGenerator.cs b/src/graphql.generator.core/Generators/ObjectTypeAbstractControllerBaseGenerator.cs
deleted file mode 100644
index 7df21bb27..000000000
--- a/src/graphql.generator.core/Generators/ObjectTypeAbstractControllerBaseGenerator.cs
+++ /dev/null
@@ -1,711 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class ObjectTypeAbstractControllerBaseGenerator
-    {
-        private static readonly List<string> RootObjectTypeNames = new List<string>
-        {
-            "Query",
-            "Mutation",
-            "Subscription"
-        };
-
-        private readonly ObjectType _objectType;
-        private readonly SchemaBuilder _schema;
-
-        public ObjectTypeAbstractControllerBaseGenerator(ObjectType objectType, SchemaBuilder schema)
-        {
-            _objectType = objectType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var interfaceName = _objectType.Name.ToControllerName().ToInterfaceName();
-            var modelName = _objectType.Name.ToModelName();
-            var name = $"{_objectType.Name.ToControllerName()}Base";
-
-            return ClassDeclaration(name)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.AbstractKeyword)
-                    )
-                )
-                .WithTypeParameterList(
-                    TypeParameterList(
-                        SingletonSeparatedList(
-                            TypeParameter(
-                                Identifier("T")))))
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(IdentifierName(interfaceName))
-                        )
-                    )
-                )
-                .WithConstraintClauses(
-                    SingletonList(
-                        TypeParameterConstraintClause(
-                                IdentifierName("T"))
-                            .WithConstraints(
-                                SingletonSeparatedList<TypeParameterConstraintSyntax>(
-                                    TypeConstraint(
-                                        IdentifierName(modelName))))))
-                .WithMembers(List(GenerateFields(_objectType, _schema)));
-        }
-
-        public static bool IsAbstract(SchemaBuilder schema, ComplexType ownerType, KeyValuePair<string, IField> field)
-        {
-            return CodeModel.IsAbstract(schema, ownerType, field);
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateFields(ObjectType objectType, SchemaBuilder schema)
-        {
-            var members = _schema.GetFields(objectType)
-                .SelectMany(field => GenerateField(objectType, field, schema))
-                .ToList();
-
-            return members;
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateField(
-            ObjectType objectType,
-            KeyValuePair<string, IField> field,
-            SchemaBuilder schema)
-        {
-            var isSubscription = _schema.IsSubscriptionType(objectType);
-
-            if (isSubscription)
-                foreach (var member in GenerateSubscriptionField(field))
-                    yield return member;
-
-            //  Query or Mutation or Subscription resolver
-            var methodName = field.Key.ToFieldResolverName();
-            var returnType = nameof(IResolverResult);
-
-            yield return MethodDeclaration(
-                    GenericName(Identifier(nameof(ValueTask)))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(returnType)))),
-                    Identifier(methodName))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.VirtualKeyword),
-                        Token(SyntaxKind.AsyncKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SingletonSeparatedList(
-                            Parameter(
-                                    Identifier("context"))
-                                .WithType(
-                                    IdentifierName(nameof(IResolverContext))))))
-                .WithBody(Block(WithFieldMethodBody(objectType, field, methodName)))
-                .WithTrailingTrivia(CarriageReturnLineFeed);
-
-            if (IsAbstract(schema, objectType, field)
-                || RootObjectTypeNames.Contains(_objectType.Name))
-                yield return WithAbstractFieldMethod(methodName, objectType, field);
-            else
-                yield return WithPropertyFieldMethod(methodName, objectType, field);
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateSubscriptionField(KeyValuePair<string, IField> field)
-        {
-            var methodName = field.Key.ToFieldResolverName();
-            var returnType = nameof(ISubscriberResult);
-
-            yield return WithSubscriberMethod(returnType, methodName, field);
-
-            yield return WithAbstractSubscriberMethod(returnType, methodName, field);
-        }
-
-        private MethodDeclarationSyntax WithSubscriberMethod(
-            string returnType,
-            string methodName,
-            KeyValuePair<string, IField> field)
-        {
-            return MethodDeclaration(
-                    GenericName(
-                            Identifier("ValueTask"))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(returnType)))),
-                    Identifier(methodName))
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.VirtualKeyword),
-                        Token(SyntaxKind.AsyncKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            new SyntaxNodeOrToken[]
-                            {
-                                Parameter(
-                                        Identifier("context"))
-                                    .WithType(
-                                        IdentifierName(nameof(IResolverContext))),
-                                Token(SyntaxKind.CommaToken),
-                                Parameter(
-                                        Identifier("unsubscribe"))
-                                    .WithType(
-                                        IdentifierName("CancellationToken"))
-                            })))
-                .WithBody(
-                    Block(
-                        LocalDeclarationStatement(
-                            VariableDeclaration(
-                                    IdentifierName("var"))
-                                .WithVariables(
-                                    SingletonSeparatedList(
-                                        VariableDeclarator(
-                                                Identifier("objectValue"))
-                                            .WithInitializer(
-                                                EqualsValueClause(
-                                                    BinaryExpression(
-                                                        SyntaxKind.AsExpression,
-                                                        MemberAccessExpression(
-                                                            SyntaxKind.SimpleMemberAccessExpression,
-                                                            IdentifierName("context"),
-                                                            IdentifierName("ObjectValue")),
-                                                        IdentifierName("T"))))))),
-                        LocalDeclarationStatement(
-                            VariableDeclaration(
-                                    IdentifierName("var"))
-                                .WithVariables(
-                                    SingletonSeparatedList(
-                                        VariableDeclarator(
-                                                Identifier("resultTask"))
-                                            .WithInitializer(
-                                                EqualsValueClause(
-                                                    InvocationExpression(
-                                                            IdentifierName(methodName))
-                                                        .WithArgumentList(
-                                                            ArgumentList(
-                                                                SeparatedList<ArgumentSyntax>(
-                                                                    WithSubscriptionArguments(field))))))))),
-                        IfStatement(
-                            MemberAccessExpression(
-                                SyntaxKind.SimpleMemberAccessExpression,
-                                IdentifierName("resultTask"),
-                                IdentifierName("IsCompletedSuccessfully")),
-                            ReturnStatement(
-                                MemberAccessExpression(
-                                    SyntaxKind.SimpleMemberAccessExpression,
-                                    IdentifierName("resultTask"),
-                                    IdentifierName("Result")))),
-                        LocalDeclarationStatement(
-                            VariableDeclaration(
-                                    IdentifierName("var"))
-                                .WithVariables(
-                                    SingletonSeparatedList(
-                                        VariableDeclarator(
-                                                Identifier("result"))
-                                            .WithInitializer(
-                                                EqualsValueClause(
-                                                    AwaitExpression(
-                                                        IdentifierName("resultTask"))))))),
-                        ReturnStatement(
-                            IdentifierName("result"))));
-        }
-
-        private IEnumerable<SyntaxNodeOrToken> WithSubscriptionArguments(KeyValuePair<string, IField> field)
-        {
-            yield return Argument(IdentifierName("objectValue"));
-            yield return Token(SyntaxKind.CommaToken);
-
-            foreach (var arg in field.Value.Arguments)
-            {
-                yield return WithArgument(arg);
-                yield return Token(SyntaxKind.CommaToken);
-            }
-
-            yield return Argument(IdentifierName("unsubscribe"));
-            yield return Token(SyntaxKind.CommaToken);
-
-            yield return Argument(IdentifierName("context"));
-        }
-
-        private MethodDeclarationSyntax WithAbstractSubscriberMethod(string returnType, string methodName,
-            KeyValuePair<string, IField> field)
-        {
-            return MethodDeclaration(
-                    GenericName(
-                            Identifier("ValueTask"))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(returnType)))),
-                    Identifier(methodName))
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.AbstractKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            WithSubscriptionParameters(field))))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private IEnumerable<SyntaxNodeOrToken> WithSubscriptionParameters(KeyValuePair<string, IField> field)
-        {
-            yield return Parameter(
-                    Identifier("objectValue"))
-                .WithType(
-                    IdentifierName("T?"));
-
-            yield return Token(SyntaxKind.CommaToken);
-
-            foreach (var argumentDefinition in field.Value.Arguments)
-            {
-                yield return WithParameter(argumentDefinition);
-                yield return Token(SyntaxKind.CommaToken);
-            }
-
-            yield return Parameter(
-                    Identifier("unsubscribe"))
-                .WithType(
-                    IdentifierName("CancellationToken"));
-
-            yield return Token(SyntaxKind.CommaToken);
-
-            yield return Parameter(
-                    Identifier("context"))
-                .WithType(
-                    IdentifierName(nameof(IResolverContext)));
-        }
-
-        private IEnumerable<StatementSyntax> WithFieldMethodBody(
-            ObjectType objectType,
-            KeyValuePair<string, IField> field,
-            string methodName)
-        {
-            var asType = "T";
-
-            var isSubscription = _schema.IsSubscriptionType(objectType);
-
-            if (isSubscription) asType = "object";
-
-            var unwrappedFieldType = field.Value.Type.Unwrap();
-
-            yield return LocalDeclarationStatement(
-                VariableDeclaration(
-                        IdentifierName("var"))
-                    .WithVariables(
-                        SingletonSeparatedList(
-                            VariableDeclarator(
-                                    Identifier("objectValue"))
-                                .WithInitializer(
-                                    EqualsValueClause(
-                                        CastExpression(
-                                            IdentifierName(asType),
-                                            MemberAccessExpression(
-                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                IdentifierName("context"),
-                                                IdentifierName("ObjectValue"))
-                                        ))))));
-
-
-            if (!RootObjectTypeNames.Contains(_objectType.Name))
-                yield return IfStatement(
-                        BinaryExpression(
-                            SyntaxKind.EqualsExpression,
-                            IdentifierName("objectValue"),
-                            LiteralExpression(
-                                SyntaxKind.NullLiteralExpression)),
-                        ReturnStatement(
-                            InvocationExpression(
-                                    MemberAccessExpression(
-                                        SyntaxKind.SimpleMemberAccessExpression,
-                                        IdentifierName("Resolve"),
-                                        IdentifierName("As")))
-                                .WithArgumentList(
-                                    ArgumentList(
-                                        SingletonSeparatedList(
-                                            Argument(
-                                                LiteralExpression(
-                                                    SyntaxKind.NullLiteralExpression)))))))
-                    .WithIfKeyword(
-                        Token(
-                            TriviaList(
-                                Comment("// if parent field was null this should never run")),
-                            SyntaxKind.IfKeyword,
-                            TriviaList()));
-
-            yield return LocalDeclarationStatement(
-                VariableDeclaration(
-                        IdentifierName("var"))
-                    .WithVariables(
-                        SingletonSeparatedList(
-                            VariableDeclarator(
-                                    Identifier("resultTask"))
-                                .WithInitializer(
-                                    EqualsValueClause(
-                                        InvocationExpression(
-                                                IdentifierName(methodName))
-                                            .WithArgumentList(
-                                                ArgumentList(
-                                                    SeparatedList<ArgumentSyntax>(
-                                                        WithArguments(objectType, field)))))))));
-
-            // todo: refactor this whole mess and fix this to work with interfaces and unions
-            if (!(unwrappedFieldType is InterfaceType) && !(unwrappedFieldType is UnionType))
-            {
-                yield return IfStatement(
-                    MemberAccessExpression(
-                        SyntaxKind.SimpleMemberAccessExpression,
-                        IdentifierName("resultTask"),
-                        IdentifierName("IsCompletedSuccessfully")),
-                    ReturnStatement(
-                        InvocationExpression(
-                                MemberAccessExpression(
-                                    SyntaxKind.SimpleMemberAccessExpression,
-                                    IdentifierName("Resolve"),
-                                    IdentifierName("As")))
-                            .WithArgumentList(
-                                ArgumentList(
-                                    SingletonSeparatedList(
-                                        Argument(
-                                            MemberAccessExpression(
-                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                IdentifierName("resultTask"),
-                                                IdentifierName("Result"))))))));
-            }
-
-            yield return LocalDeclarationStatement(
-                VariableDeclaration(
-                        IdentifierName("var"))
-                    .WithVariables(
-                        SingletonSeparatedList(
-                            VariableDeclarator(
-                                    Identifier("result"))
-                                .WithInitializer(
-                                    EqualsValueClause(
-                                        AwaitExpression(
-                                            IdentifierName("resultTask")))))));
-
-            if (unwrappedFieldType is InterfaceType || unwrappedFieldType is UnionType)
-            {
-                var modelName = unwrappedFieldType.Name.ToModelInterfaceName();
-                var modelControllerName = unwrappedFieldType.Name
-                    .ToModelInterfaceName()
-                    .ToControllerName();
-
-                if (field.Value.Type.IsList())
-                {
-                    yield return ReturnStatement(
-                        ObjectCreationExpression(
-                                IdentifierName("CompleteValueResult"))
-                            .WithArgumentList(
-                                ArgumentList(
-                                    SeparatedList<ArgumentSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Argument(
-                                                IdentifierName("result")),
-                                            Token(SyntaxKind.CommaToken),
-                                            Argument(
-                                                SimpleLambdaExpression(
-                                                    Parameter(
-                                                        Identifier("item")),
-                                                    InvocationExpression(
-                                                            MemberAccessExpression(
-                                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                                InvocationExpression(
-                                                                    MemberAccessExpression(
-                                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                                        IdentifierName("context"),
-                                                                        GenericName(
-                                                                                Identifier("Use"))
-                                                                            .WithTypeArgumentList(
-                                                                                TypeArgumentList(
-                                                                                    SingletonSeparatedList<TypeSyntax>(
-                                                                                        IdentifierName(
-                                                                                            modelControllerName)))))),
-                                                                IdentifierName("IsTypeOf")))
-                                                        .WithArgumentList(
-                                                            ArgumentList(SeparatedList<ArgumentSyntax>(
-                                                                new SyntaxNodeOrToken[]{
-                                                                    Argument(BinaryExpression(
-                                                                        SyntaxKind.AsExpression,
-                                                                        IdentifierName("item"),
-                                                                        IdentifierName(modelName))),
-                                                                    Token(SyntaxKind.CommaToken),
-                                                                    Argument(
-                                                                        MemberAccessExpression(
-                                                                            SyntaxKind.SimpleMemberAccessExpression,
-                                                                            MemberAccessExpression(
-                                                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                                                IdentifierName("context"),
-                                                                                IdentifierName("ExecutionContext")),
-                                                                            IdentifierName("Schema")))})))))
-                                        }))));
-                    yield break;
-                }
-
-                yield return ReturnStatement(
-                    ObjectCreationExpression(
-                            IdentifierName("CompleteValueResult"))
-                        .WithArgumentList(
-                            ArgumentList(
-                                SeparatedList<ArgumentSyntax>(
-                                    new SyntaxNodeOrToken[]
-                                    {
-                                        Argument(
-                                            IdentifierName("result")),
-                                        Token(SyntaxKind.CommaToken),
-                                        Argument(
-                                            InvocationExpression(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        InvocationExpression(
-                                                            MemberAccessExpression(
-                                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                                IdentifierName("context"),
-                                                                GenericName(
-                                                                        Identifier("Use"))
-                                                                    .WithTypeArgumentList(
-                                                                        TypeArgumentList(
-                                                                            SingletonSeparatedList<TypeSyntax>(
-                                                                                IdentifierName(
-                                                                                    modelControllerName)))))),
-                                                        IdentifierName("IsTypeOf")))
-                                                .WithArgumentList(
-                                                    ArgumentList(
-                                                        SeparatedList<ArgumentSyntax>(
-                                                            new SyntaxNodeOrToken[]{
-                                                                Argument(
-                                                                    IdentifierName("result")),
-                                                                Token(SyntaxKind.CommaToken),
-                                                                Argument(
-                                                                    MemberAccessExpression(
-                                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                                        MemberAccessExpression(
-                                                                            SyntaxKind.SimpleMemberAccessExpression,
-                                                                            IdentifierName("context"),
-                                                                            IdentifierName("ExecutionContext")),
-                                                                        IdentifierName("Schema")))})))
-                                    )}))));
-                yield break;
-            }
-
-            yield return ReturnStatement(
-                InvocationExpression(
-                        MemberAccessExpression(
-                            SyntaxKind.SimpleMemberAccessExpression,
-                            IdentifierName("Resolve"),
-                            IdentifierName("As")))
-                    .WithArgumentList(
-                        ArgumentList(
-                            SingletonSeparatedList(
-                                Argument(
-                                    IdentifierName("result"))))));
-        }
-
-        private IEnumerable<SyntaxNodeOrToken> WithArguments(
-            ObjectType objectType,
-            KeyValuePair<string, IField> fieldDefinition)
-        {
-            yield return Argument(IdentifierName("objectValue"));
-
-            var arguments = fieldDefinition.Value.Arguments;
-
-            foreach (var argumentDefinition in arguments)
-            {
-                yield return Token(SyntaxKind.CommaToken);
-                yield return WithArgument(argumentDefinition);
-            }
-
-            yield return Token(SyntaxKind.CommaToken);
-
-            yield return Argument(IdentifierName("context"));
-        }
-
-        private SyntaxNodeOrToken WithArgument(KeyValuePair<string, Argument> argumentDefinition)
-        {
-            var rawArgumentName = argumentDefinition.Key;
-            var argument = argumentDefinition.Value;
-            var typeName = CodeModel.SelectTypeName(argument.Type);
-
-            var isInputObject = argument.Type.Unwrap() is InputObjectType;
-
-            string getArgumentMethodName;
-            if (isInputObject)
-            {
-                if (argument.Type is List)
-                {
-                    typeName = CodeModel.SelectTypeName(argument.Type.Unwrap());
-                    getArgumentMethodName = nameof(ResolverContextExtensions.GetObjectArgumentList);
-                }
-                else
-                {
-                    getArgumentMethodName = nameof(ResolverContextExtensions.GetObjectArgument);
-                }
-            }
-            else
-            {
-                getArgumentMethodName = nameof(ResolverContextExtensions.GetArgument);
-            }
-
-            var getArgumentValue = InvocationExpression(
-                    MemberAccessExpression(
-                        SyntaxKind.SimpleMemberAccessExpression,
-                        IdentifierName("context"),
-                        GenericName(
-                                Identifier(getArgumentMethodName))
-                            .WithTypeArgumentList(
-                                TypeArgumentList(
-                                    SingletonSeparatedList<TypeSyntax>(
-                                        IdentifierName(typeName))))))
-                .WithArgumentList(
-                    ArgumentList(
-                        SingletonSeparatedList(
-                            Argument(LiteralExpression(
-                                SyntaxKind.StringLiteralExpression,
-                                Literal(rawArgumentName))))));
-
-            return Argument(getArgumentValue);
-        }
-
-        private MethodDeclarationSyntax WithAbstractFieldMethod(
-            string methodName,
-            ObjectType objectType,
-            KeyValuePair<string, IField> field)
-        {
-            var resultTypeName = CodeModel.SelectFieldTypeName(_schema, _objectType, field);
-
-            return MethodDeclaration(
-                    GenericName(
-                            Identifier(nameof(ValueTask)))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(resultTypeName)))),
-                    Identifier(methodName))
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.AbstractKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            WithParameters(objectType, field))))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private IEnumerable<SyntaxNodeOrToken> WithParameters(
-            ObjectType objectType,
-            KeyValuePair<string, IField> field)
-        {
-            var isSubscription = _schema.IsSubscriptionType(objectType);
-
-            if (!isSubscription)
-            {
-                if (RootObjectTypeNames.Contains(objectType.Name))
-                    yield return Parameter(Identifier("objectValue"))
-                        .WithType(IdentifierName("T?"));
-                else
-                    yield return Parameter(Identifier("objectValue"))
-                        .WithType(IdentifierName("T"));
-            }
-            else
-            {
-                /*var subscriptionType = CodeModel.SelectFieldTypeName(
-                    _schema,
-                    _objectType,
-                    field);*/
-
-                yield return Parameter(Identifier("objectValue"))
-                    .WithType(IdentifierName("object"));
-            }
-
-            var arguments = field.Value.Arguments;
-
-            foreach (var argumentDefinition in arguments)
-            {
-                yield return Token(SyntaxKind.CommaToken);
-                yield return WithParameter(argumentDefinition);
-            }
-
-            yield return Token(SyntaxKind.CommaToken);
-
-            yield return Parameter(Identifier("context"))
-                .WithType(IdentifierName(nameof(IResolverContext)));
-        }
-
-        private static SyntaxNodeOrToken WithParameter(
-            KeyValuePair<string, Argument> argumentDefinition)
-        {
-            var argumentName = argumentDefinition.Key.ToFieldArgumentName();
-            var argument = argumentDefinition.Value;
-            var typeName = CodeModel.SelectTypeName(argument.Type);
-
-            return Parameter(Identifier(argumentName))
-                .WithType(ParseTypeName(typeName));
-        }
-
-        private MethodDeclarationSyntax WithPropertyFieldMethod(
-            string methodName,
-            ObjectType objectType,
-            KeyValuePair<string, IField> field)
-        {
-            var resultTypeName = CodeModel.SelectFieldTypeName(_schema, _objectType, field);
-            return MethodDeclaration(
-                    GenericName(
-                            Identifier(nameof(ValueTask)))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(resultTypeName)))),
-                    Identifier(methodName))
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.VirtualKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            new SyntaxNodeOrToken[]
-                            {
-                                Parameter(
-                                        Identifier("objectValue"))
-                                    .WithType(
-                                        IdentifierName("T")),
-                                Token(SyntaxKind.CommaToken),
-                                Parameter(
-                                        Identifier("context"))
-                                    .WithType(
-                                        IdentifierName(nameof(IResolverContext)))
-                            })))
-                .WithBody(
-                    Block(
-                        SingletonList<StatementSyntax>(
-                            ReturnStatement(
-                                ObjectCreationExpression(
-                                        GenericName(
-                                                Identifier(nameof(ValueTask)))
-                                            .WithTypeArgumentList(
-                                                TypeArgumentList(
-                                                    SingletonSeparatedList<TypeSyntax>(
-                                                        IdentifierName(resultTypeName)))))
-                                    .WithArgumentList(
-                                        ArgumentList(
-                                            SingletonSeparatedList(
-                                                Argument(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        IdentifierName("objectValue"),
-                                                        IdentifierName(methodName))))))))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ObjectTypeControllerInterfaceGenerator.cs b/src/graphql.generator.core/Generators/ObjectTypeControllerInterfaceGenerator.cs
deleted file mode 100644
index 0d8f22a16..000000000
--- a/src/graphql.generator.core/Generators/ObjectTypeControllerInterfaceGenerator.cs
+++ /dev/null
@@ -1,106 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class ObjectTypeControllerInterfaceGenerator
-    {
-        private readonly ObjectType _objectType;
-        private readonly SchemaBuilder _schema;
-
-        public ObjectTypeControllerInterfaceGenerator(ObjectType objectType, SchemaBuilder schema)
-        {
-            _objectType = objectType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var controllerInterfaceName = _objectType.Name.ToControllerName().ToInterfaceName();
-            return InterfaceDeclaration(controllerInterfaceName)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithMembers(List(GenerateFields(_objectType, _schema)));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateFields(ObjectType objectType, SchemaBuilder schema)
-        {
-            var members = _schema.GetFields(objectType)
-                .SelectMany(field => GenerateField(objectType, field, schema))
-                .ToList();
-
-            return members;
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateField(ObjectType objectType, KeyValuePair<string, IField> field,
-            SchemaBuilder schema)
-        {
-            var methodName = field.Key.ToFieldResolverName();
-            var isSubscription = _schema.IsSubscriptionType(objectType);
-
-            if (isSubscription)
-                foreach (var member in GenerateSubscriptionField(objectType, field))
-                    yield return member;
-
-            yield return MethodDeclaration(
-                    GenericName(Identifier(nameof(ValueTask)))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(nameof(IResolverResult))))),
-                    Identifier(methodName))
-                .WithParameterList(
-                    ParameterList(
-                        SingletonSeparatedList(
-                            Parameter(
-                                    Identifier("context"))
-                                .WithType(
-                                    IdentifierName(nameof(IResolverContext))))))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateSubscriptionField(ObjectType objectType, KeyValuePair<string, IField> field)
-        {
-            var methodName = field.Key.ToFieldResolverName();
-            var returnType = nameof(ISubscriberResult);
-
-            yield return MethodDeclaration(
-                    GenericName(
-                            Identifier("ValueTask"))
-                        .WithTypeArgumentList(
-                            TypeArgumentList(
-                                SingletonSeparatedList<TypeSyntax>(
-                                    IdentifierName(returnType)))),
-                    Identifier(methodName))
-                .WithParameterList(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            new SyntaxNodeOrToken[]
-                            {
-                                Parameter(
-                                        Identifier("context"))
-                                    .WithType(
-                                        IdentifierName(nameof(IResolverContext))),
-                                Token(SyntaxKind.CommaToken),
-                                Parameter(
-                                        Identifier("unsubscribe"))
-                                    .WithType(
-                                        IdentifierName(nameof(CancellationToken)))
-                            })))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ObjectTypeFieldResolversGenerator.cs b/src/graphql.generator.core/Generators/ObjectTypeFieldResolversGenerator.cs
deleted file mode 100644
index ed9e0ded3..000000000
--- a/src/graphql.generator.core/Generators/ObjectTypeFieldResolversGenerator.cs
+++ /dev/null
@@ -1,229 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class ObjectTypeFieldResolversGenerator
-    {
-        private readonly ObjectType _objectType;
-        private readonly SchemaBuilder _schema;
-        private string _name;
-
-        public ObjectTypeFieldResolversGenerator(ObjectType objectType, SchemaBuilder schema)
-        {
-            _objectType = objectType;
-            _schema = schema;
-            _name = _objectType.Name.ToFieldResolversName();
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            return ClassDeclaration(_name)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(
-                                IdentifierName(nameof(FieldResolversMap))))))
-                .WithMembers(
-                    List(WithMembers()));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> WithMembers()
-        {
-            yield return WithConstructor();
-            yield return MethodDeclaration(
-                    PredefinedType(
-                        Token(SyntaxKind.VoidKeyword)),
-                    Identifier("Modify"))
-                .WithModifiers(
-                    TokenList(
-                        new []{
-                            Token(SyntaxKind.PartialKeyword)}))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private MemberDeclarationSyntax WithConstructor()
-        {
-            return ConstructorDeclaration(
-                    Identifier(_name))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithBody(Block(WithResolvers()));
-        }
-
-        private List<StatementSyntax> WithResolvers()
-        {
-            var statements = _schema.GetFields(_objectType)
-                .SelectMany(WithAddResolver)
-                .ToList();
-
-            statements.Add(ExpressionStatement(InvocationExpression(IdentifierName("Modify"))));
-
-            return statements;
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> WithModify()
-        {
-            yield return MethodDeclaration(
-                    PredefinedType(
-                        Token(SyntaxKind.VoidKeyword)),
-                    Identifier("Modify"))
-                .WithModifiers(
-                    TokenList(
-                        new []{
-                            Token(SyntaxKind.PartialKeyword)}))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private IEnumerable<StatementSyntax> WithAddResolver(KeyValuePair<string, IField> field)
-        {
-            var isSubscription = _schema.IsSubscriptionType(_objectType);
-
-            if (isSubscription)
-            {
-                yield return WithAddSubscriber(field);
-                yield break;
-            }
-
-
-            var interfaceName = _objectType.Name.ToControllerName().ToInterfaceName();
-            var fieldName = field.Key;
-            var methodName = fieldName.ToFieldResolverName();
-
-            yield return ExpressionStatement(
-                InvocationExpression(
-                        IdentifierName(nameof(FieldResolversMap.Add)))
-                    .WithArgumentList(
-                        ArgumentList(
-                            SeparatedList<ArgumentSyntax>(
-                                new SyntaxNodeOrToken[]
-                                {
-                                    Argument(
-                                        LiteralExpression(
-                                            SyntaxKind.StringLiteralExpression,
-                                            Literal(fieldName))),
-                                    Token(SyntaxKind.CommaToken),
-                                    Argument(
-                                        SimpleLambdaExpression(
-                                            Parameter(
-                                                Identifier("context")),
-                                            InvocationExpression(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        InvocationExpression(
-                                                            MemberAccessExpression(
-                                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                                IdentifierName("context"),
-                                                                GenericName(
-                                                                        Identifier("Use"))
-                                                                    .WithTypeArgumentList(
-                                                                        TypeArgumentList(
-                                                                            SingletonSeparatedList<TypeSyntax>(
-                                                                                IdentifierName(interfaceName)))))),
-                                                        IdentifierName(methodName)))
-                                                .WithArgumentList(
-                                                    ArgumentList(
-                                                        SingletonSeparatedList(
-                                                            Argument(
-                                                                IdentifierName("context")))))))
-                                }))));
-        }
-
-        private StatementSyntax WithAddSubscriber(KeyValuePair<string, IField> field)
-        {
-            var interfaceName = _objectType.Name.ToControllerName().ToInterfaceName();
-            var fieldName = field.Key;
-            var methodName = fieldName.ToFieldResolverName();
-
-            var subscribe = Argument(
-                ParenthesizedLambdaExpression(
-                    ParameterList(
-                        SeparatedList<ParameterSyntax>(
-                            new SyntaxNodeOrToken[]
-                            {
-                                Parameter(Identifier("context")),
-                                Token(SyntaxKind.CommaToken),
-                                Parameter(Identifier("unsubscribe"))
-                            })),
-                        InvocationExpression(
-                                MemberAccessExpression(
-                                    SyntaxKind.SimpleMemberAccessExpression,
-                                    InvocationExpression(
-                                        MemberAccessExpression(
-                                            SyntaxKind.SimpleMemberAccessExpression,
-                                            IdentifierName("context"),
-                                            GenericName(
-                                                    Identifier("Use"))
-                                                .WithTypeArgumentList(
-                                                    TypeArgumentList(
-                                                        SingletonSeparatedList<TypeSyntax>(
-                                                            IdentifierName(
-                                                                interfaceName)))))),
-                                    IdentifierName(methodName)))
-                            .WithArgumentList(
-                                ArgumentList(
-                                    SeparatedList<ArgumentSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Argument(
-                                                IdentifierName("context")),
-                                            Token(SyntaxKind.CommaToken),
-                                            Argument(
-                                                IdentifierName("unsubscribe"))
-                                        })))));
-
-            return ExpressionStatement(
-                InvocationExpression(
-                        IdentifierName(nameof(FieldResolversMap.Add)))
-                    .WithArgumentList(
-                        ArgumentList(
-                            SeparatedList<ArgumentSyntax>(
-                                new SyntaxNodeOrToken[]
-                                {
-                                    Argument(
-                                        LiteralExpression(
-                                            SyntaxKind.StringLiteralExpression,
-                                            Literal(fieldName))),
-                                    Token(SyntaxKind.CommaToken),
-                                    subscribe,
-                                    Token(SyntaxKind.CommaToken),
-                                    Argument(
-                                        SimpleLambdaExpression(
-                                            Parameter(
-                                                Identifier("context")),
-                                            InvocationExpression(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        InvocationExpression(
-                                                            MemberAccessExpression(
-                                                                SyntaxKind.SimpleMemberAccessExpression,
-                                                                IdentifierName("context"),
-                                                                GenericName(
-                                                                        Identifier("Use"))
-                                                                    .WithTypeArgumentList(
-                                                                        TypeArgumentList(
-                                                                            SingletonSeparatedList<TypeSyntax>(
-                                                                                IdentifierName(interfaceName)))))),
-                                                        IdentifierName(methodName)))
-                                                .WithArgumentList(
-                                                    ArgumentList(
-                                                        SingletonSeparatedList(
-                                                            Argument(
-                                                                IdentifierName("context")))))))
-                                }))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ObjectTypeModelGenerator.cs b/src/graphql.generator.core/Generators/ObjectTypeModelGenerator.cs
deleted file mode 100644
index f89e1e803..000000000
--- a/src/graphql.generator.core/Generators/ObjectTypeModelGenerator.cs
+++ /dev/null
@@ -1,148 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.Introspection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class ObjectTypeModelGenerator
-    {
-        private readonly ObjectType _objectType;
-        private readonly SchemaBuilder _schema;
-
-        public ObjectTypeModelGenerator(ObjectType objectType, SchemaBuilder schema)
-        {
-            _objectType = objectType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var modelName = _objectType.Name.ToModelName();
-            var classDeclaration = ClassDeclaration(modelName)
-                
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithLeadingTrivia(CodeModel.ToXmlComment(_objectType.Description))
-                .WithMembers(
-                    List(GenerateProperties()));
-
-            var baseList = WithInterfaces(out var count);
-
-            if (count > 0)
-            {
-                classDeclaration = classDeclaration.WithBaseList(baseList);
-            }
-        
-            return classDeclaration;
-        }
-
-        private BaseListSyntax WithInterfaces(out int count)
-        {
-            var interfaceNames = new List<string>();
-
-            // interface types
-            if (_objectType.Interfaces != null && _objectType.Interfaces.Any())
-            {
-                interfaceNames.AddRange(_objectType.Interfaces.Select(
-                    interfaceType => interfaceType.Name.ToModelInterfaceName()));
-            }
-
-            // union types
-            var unionTypes = _schema.GetTypes<UnionType>()
-                .Where(unionType => unionType.IsPossible(_objectType))
-                .ToList();
-
-            if (unionTypes.Count > 0)
-            {
-                interfaceNames.AddRange(unionTypes.Select(
-                    unionType => unionType.Name.ToModelInterfaceName()));
-            }
-
-            // create implemented interface list
-            var interfaceCount = interfaceNames.Count;
-
-            if (interfaceCount == 0)
-            {
-                count = 0;
-                return BaseList();
-            }
-
-            var interfaceList = new List<SyntaxNodeOrToken>();
-
-            for (int i = 0; i < interfaceCount; i++)
-            {
-                var interfaceName = interfaceNames[i];
-
-                interfaceList.Add(SimpleBaseType(IdentifierName(interfaceName)));
-
-                if (interfaceCount > 1 && i < interfaceCount - 1)
-                    interfaceList.Add(Token(SyntaxKind.CommaToken));
-            }
-
-            count = interfaceCount;
-            return BaseList(
-                SeparatedList<BaseTypeSyntax>(interfaceList));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateProperties()
-        {
-            var props = new List<MemberDeclarationSyntax>();
-            props.Add(CodeModel.TypenameProperty(_objectType.Name));
-
-            var fields = _schema.GetFields(_objectType);
-
-            foreach (var field in fields)
-            {
-                if (ObjectTypeAbstractControllerBaseGenerator.IsAbstract(
-                    _schema, 
-                    _objectType, 
-                    field))
-                    continue;
-
-                props.Add(GenerateProperty(field));
-            }
-
-            return props;
-        }
-
-        private MemberDeclarationSyntax GenerateProperty(KeyValuePair<string, IField> field)
-        {
-            var propertyName = field.Key.ToFieldResolverName();
-            var typeName = SelectFieldType(field);
-            return PropertyDeclaration(
-                    IdentifierName(typeName),
-                    Identifier(propertyName))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithLeadingTrivia(CodeModel.ToXmlComment(field.Value.Description))
-                .WithAccessorList(
-                    AccessorList(
-                        List(
-                            new[]
-                            {
-                                AccessorDeclaration(
-                                        SyntaxKind.GetAccessorDeclaration)
-                                    .WithSemicolonToken(
-                                        Token(SyntaxKind.SemicolonToken)),
-                                AccessorDeclaration(
-                                        SyntaxKind.SetAccessorDeclaration)
-                                    .WithSemicolonToken(
-                                        Token(SyntaxKind.SemicolonToken))
-                            })));
-        }
-
-        public string SelectFieldType(KeyValuePair<string, IField> field)
-        {
-            return CodeModel.SelectFieldTypeName(_schema, _objectType, field);
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/SchemaResolversGenerator.cs b/src/graphql.generator.core/Generators/SchemaResolversGenerator.cs
deleted file mode 100644
index 2fcde4f9f..000000000
--- a/src/graphql.generator.core/Generators/SchemaResolversGenerator.cs
+++ /dev/null
@@ -1,102 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class SchemaResolversGenerator
-    {
-        private readonly SchemaBuilder _schema;
-        private readonly string _name;
-        private string _resolversName;
-
-        public SchemaResolversGenerator(SchemaBuilder schema, string name)
-        {
-            _schema = schema;
-            _name = name;
-            _resolversName = _name.ToSchemaResolversName();
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            return ClassDeclaration(_resolversName)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(
-                                IdentifierName(nameof(ObjectTypeMap))))))
-                .WithMembers(
-                    List(WithMembers()));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> WithMembers()
-        {
-            yield return WithConstructor();
-            yield return MethodDeclaration(
-                    PredefinedType(
-                        Token(SyntaxKind.VoidKeyword)),
-                    Identifier("Modify"))
-                .WithModifiers(
-                    TokenList(
-                        new []{
-                            Token(SyntaxKind.PartialKeyword)}))
-                .WithSemicolonToken(
-                    Token(SyntaxKind.SemicolonToken));
-        }
-
-        private MemberDeclarationSyntax WithConstructor()
-        {
-            return ConstructorDeclaration(
-                    Identifier(_resolversName))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithBody(Block(WithAddObjectResolvers()));
-        }
-
-        private IEnumerable<StatementSyntax> WithAddObjectResolvers()
-        {
-            var objectTypes = _schema.GetTypes<ObjectType>();
-            foreach (var objectType in objectTypes)
-            {
-                yield return WithAddObjectFieldResolvers(objectType);
-            }
-
-            yield return ExpressionStatement(InvocationExpression(IdentifierName("Modify")));
-        }
-
-        private StatementSyntax WithAddObjectFieldResolvers(ObjectType objectType)
-        {
-            var objectName = objectType.Name;
-            var resolversName = objectName.ToFieldResolversName();
-            return ExpressionStatement(
-                InvocationExpression(
-                        IdentifierName(nameof(ObjectTypeMap.Add)))
-                    .WithArgumentList(
-                        ArgumentList(
-                            SeparatedList<ArgumentSyntax>(
-                                new SyntaxNodeOrToken[]
-                                {
-                                    Argument(
-                                        LiteralExpression(
-                                            SyntaxKind.StringLiteralExpression,
-                                            Literal(objectName))),
-                                    Token(SyntaxKind.CommaToken),
-                                    Argument(
-                                        ObjectCreationExpression(
-                                                IdentifierName(resolversName))
-                                            .WithArgumentList(
-                                                ArgumentList()))
-                                }))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ServiceCollectionExtensionGenerator.cs b/src/graphql.generator.core/Generators/ServiceCollectionExtensionGenerator.cs
deleted file mode 100644
index cda87e5a0..000000000
--- a/src/graphql.generator.core/Generators/ServiceCollectionExtensionGenerator.cs
+++ /dev/null
@@ -1,66 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    public class ServiceCollectionExtensionGenerator
-    {
-        private readonly SchemaBuilder _schema;
-        private readonly string _schemaName;
-
-        public ServiceCollectionExtensionGenerator(SchemaBuilder schema, string schemaName)
-        {
-            _schema = schema;
-            _schemaName = schemaName;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var builderName = _schemaName.ToServiceBuilderName();
-            return ClassDeclaration("ServiceCollectionExtension")
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.StaticKeyword)))
-                .WithMembers(
-                    SingletonList<MemberDeclarationSyntax>(
-                        MethodDeclaration(
-                                IdentifierName(builderName),
-                                Identifier($"Add{_schemaName}Controllers"))
-                            .WithModifiers(
-                                TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.StaticKeyword)))
-                            .WithParameterList(
-                                ParameterList(
-                                    SingletonSeparatedList(
-                                        Parameter(
-                                                Identifier("services"))
-                                            .WithModifiers(
-                                                TokenList(
-                                                    Token(SyntaxKind.ThisKeyword)))
-                                            .WithType(
-                                                IdentifierName("IServiceCollection")))))
-                            .WithBody(
-                                Block(
-                                    LocalDeclarationStatement(
-                                        VariableDeclaration(
-                                                IdentifierName("var"))
-                                            .WithVariables(
-                                                SingletonSeparatedList(
-                                                    VariableDeclarator(
-                                                            Identifier("builder"))
-                                                        .WithInitializer(
-                                                            EqualsValueClause(
-                                                                ObjectCreationExpression(
-                                                                        IdentifierName(builderName))
-                                                                    .WithArgumentList(
-                                                                        ArgumentList(
-                                                                            SingletonSeparatedList(
-                                                                                Argument(
-                                                                                    IdentifierName("services")))))))))),
-                                    ReturnStatement(
-                                        IdentifierName("builder"))))))
-                .NormalizeWhitespace();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/ServicesBuilderGenerator.cs b/src/graphql.generator.core/Generators/ServicesBuilderGenerator.cs
deleted file mode 100644
index 09a289eda..000000000
--- a/src/graphql.generator.core/Generators/ServicesBuilderGenerator.cs
+++ /dev/null
@@ -1,180 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class ServicesBuilderGenerator
-    {
-        private readonly SchemaBuilder _schema;
-        private readonly string _schemaName;
-
-        public ServicesBuilderGenerator(SchemaBuilder schema, string schemaName)
-        {
-            _schema = schema;
-            _schemaName = schemaName;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var builderName = _schemaName.ToServiceBuilderName();
-            return ClassDeclaration(builderName)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithMembers(
-                    List(GenerateMembers(builderName)))
-                .NormalizeWhitespace();
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateMembers(string builderName)
-        {
-            // list of generated interface types
-            yield return FieldDeclaration(
-                    VariableDeclaration(
-                            ArrayType(
-                                    IdentifierName("Type"))
-                                .WithRankSpecifiers(
-                                    SingletonList(
-                                        ArrayRankSpecifier(
-                                            SingletonSeparatedList<ExpressionSyntax>(
-                                                OmittedArraySizeExpression())))))
-                        .WithVariables(
-                            SingletonSeparatedList(
-                                VariableDeclarator(
-                                        Identifier("GeneratedControllerTypes"))
-                                    .WithInitializer(
-                                        EqualsValueClause(
-                                            InitializerExpression(
-                                                SyntaxKind.ArrayInitializerExpression,
-                                                SeparatedList<ExpressionSyntax>(
-                                                    GenerateControllerInterfaceList())))))))
-                .WithModifiers(TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.StaticKeyword)));
-
-            // constructor
-            yield return ConstructorDeclaration(
-                    Identifier(builderName))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithParameterList(
-                    ParameterList(
-                        SingletonSeparatedList(
-                            Parameter(
-                                    Identifier("services"))
-                                .WithType(
-                                    IdentifierName("IServiceCollection")))))
-                .WithBody(
-                    Block(
-                        SingletonList<StatementSyntax>(
-                            ExpressionStatement(
-                                AssignmentExpression(
-                                    SyntaxKind.SimpleAssignmentExpression,
-                                    IdentifierName("Services"),
-                                    IdentifierName("services"))))));
-
-            // Services for extensions methods
-            yield return PropertyDeclaration(
-                    IdentifierName("IServiceCollection"),
-                    Identifier("Services"))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithAccessorList(
-                    AccessorList(
-                        SingletonList(
-                            AccessorDeclaration(
-                                    SyntaxKind.GetAccessorDeclaration)
-                                .WithSemicolonToken(
-                                    Token(SyntaxKind.SemicolonToken)))));
-
-            // Add method for each controller interface type
-            foreach (var namedType in CollectNames())
-                yield return AddControllerMethod(
-                    builderName,
-                    namedType);
-        }
-
-        private MemberDeclarationSyntax AddControllerMethod(string builderName, string namedTypeName)
-        {
-            var controllerName = namedTypeName.ToControllerName();
-            var controllerInterfaceName = namedTypeName.ToControllerName().ToInterfaceName();
-
-            return MethodDeclaration(
-                    IdentifierName(builderName),
-                    Identifier($"Add{controllerName}"))
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword)))
-                .WithTypeParameterList(
-                    TypeParameterList(
-                        SingletonSeparatedList(
-                            TypeParameter(
-                                Identifier("T")))))
-                .WithConstraintClauses(
-                    SingletonList(
-                        TypeParameterConstraintClause(
-                                IdentifierName("T"))
-                            .WithConstraints(
-                                SeparatedList<TypeParameterConstraintSyntax>(
-                                    new SyntaxNodeOrToken[]
-                                    {
-                                        ClassOrStructConstraint(
-                                            SyntaxKind.ClassConstraint),
-                                        Token(SyntaxKind.CommaToken),
-                                        TypeConstraint(
-                                            IdentifierName(controllerInterfaceName))
-                                    }))))
-                .WithBody(
-                    Block(
-                        ExpressionStatement(
-                            InvocationExpression(
-                                MemberAccessExpression(
-                                    SyntaxKind.SimpleMemberAccessExpression,
-                                    IdentifierName("Services"),
-                                    GenericName(
-                                            Identifier("TryAddScoped"))
-                                        .WithTypeArgumentList(
-                                            TypeArgumentList(
-                                                SeparatedList<TypeSyntax>(
-                                                    new SyntaxNodeOrToken[]
-                                                    {
-                                                        IdentifierName(controllerInterfaceName),
-                                                        Token(SyntaxKind.CommaToken),
-                                                        IdentifierName("T")
-                                                    })))))),
-                        ReturnStatement(
-                            ThisExpression())));
-        }
-
-        private IEnumerable<SyntaxNodeOrToken> GenerateControllerInterfaceList()
-        {
-            var typeNames = CollectNames()
-                .ToList();
-
-            foreach (var typeName in typeNames)
-            {
-                var controllerInterfaceName = typeName.ToControllerName().ToInterfaceName();
-                yield return TypeOfExpression(IdentifierName(controllerInterfaceName));
-                yield return Token(SyntaxKind.CommaToken);
-            }
-        }
-
-        private IEnumerable<string> CollectNames()
-        {
-            foreach (var objectType in _schema.GetTypes<ObjectType>())
-                yield return objectType.Name;
-
-            foreach (var interfaceType in _schema.GetTypes<InterfaceType>())
-                yield return interfaceType.Name;
-
-            foreach (var unionType in _schema.GetTypes<UnionType>())
-                yield return unionType.Name;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/UnionTypeControllerGenerator.cs b/src/graphql.generator.core/Generators/UnionTypeControllerGenerator.cs
deleted file mode 100644
index 807dab0e6..000000000
--- a/src/graphql.generator.core/Generators/UnionTypeControllerGenerator.cs
+++ /dev/null
@@ -1,83 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class UnionTypeControllerGenerator
-    {
-        private readonly UnionType _unionType;
-        private readonly SchemaBuilder _schema;
-
-        public UnionTypeControllerGenerator(UnionType unionType, SchemaBuilder schema)
-        {
-            _unionType = unionType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var controllerName = _unionType.Name
-                .ToControllerName();
-
-            var controllerInterfaceName = _unionType.Name
-                .ToModelInterfaceName()
-                .ToControllerName();
-            
-            var modelName = _unionType.Name
-                .ToModelInterfaceName();
-
-            return ClassDeclaration(controllerName)
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.PartialKeyword)))
-                .WithBaseList(
-                    BaseList(
-                        SingletonSeparatedList<BaseTypeSyntax>(
-                            SimpleBaseType(
-                                IdentifierName(controllerInterfaceName)))))
-                .WithMembers(
-                    SingletonList<MemberDeclarationSyntax>(
-                        MethodDeclaration(
-                                IdentifierName("INamedType"),
-                                Identifier("IsTypeOf"))
-                            .WithModifiers(
-                                TokenList(
-                                    Token(SyntaxKind.PublicKeyword)))
-                            .WithParameterList(
-                                ParameterList(
-                                    SeparatedList<ParameterSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Parameter(
-                                                    Identifier("instance"))
-                                                .WithType(
-                                                    IdentifierName(modelName)),
-                                            Token(SyntaxKind.CommaToken),
-                                            Parameter(
-                                                    Identifier("schema"))
-                                                .WithType(
-                                                    IdentifierName("ISchema"))
-                                        })))
-                            .WithBody(
-                                Block(
-                                    SingletonList<StatementSyntax>(
-                                        ReturnStatement(
-                                            InvocationExpression(
-                                                    MemberAccessExpression(
-                                                        SyntaxKind.SimpleMemberAccessExpression,
-                                                        IdentifierName("schema"),
-                                                        IdentifierName("GetNamedType")))
-                                                .WithArgumentList(
-                                                    ArgumentList(
-                                                        SingletonSeparatedList(
-                                                            Argument(
-                                                                MemberAccessExpression(
-                                                                    SyntaxKind.SimpleMemberAccessExpression,
-                                                                    IdentifierName("instance"),
-                                                                    IdentifierName("__Typename"))))))))))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/UnionTypeControllerInterfaceGenerator.cs b/src/graphql.generator.core/Generators/UnionTypeControllerInterfaceGenerator.cs
deleted file mode 100644
index 57cfa8ac1..000000000
--- a/src/graphql.generator.core/Generators/UnionTypeControllerInterfaceGenerator.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class UnionTypeControllerInterfaceGenerator
-    {
-        private readonly UnionType _unionType;
-        private readonly SchemaBuilder _schema;
-
-        public UnionTypeControllerInterfaceGenerator(UnionType unionType, SchemaBuilder schema)
-        {
-            _unionType = unionType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var modelControllerName = _unionType.Name.ToModelInterfaceName().ToControllerName();
-            var modelName = _unionType.Name.ToModelInterfaceName();
-            return InterfaceDeclaration(modelControllerName)
-                .WithModifiers(
-                    TokenList(Token(SyntaxKind.PublicKeyword), Token(SyntaxKind.PartialKeyword)))
-                .WithMembers(
-                    SingletonList<MemberDeclarationSyntax>(
-                        MethodDeclaration(
-                                IdentifierName("INamedType"),
-                                Identifier("IsTypeOf"))
-                            .WithParameterList(
-                                ParameterList(
-                                    SeparatedList<ParameterSyntax>(
-                                        new SyntaxNodeOrToken[]
-                                        {
-                                            Parameter(
-                                                    Identifier("instance"))
-                                                .WithType(
-                                                    IdentifierName($"{modelName}")),
-                                            Token(SyntaxKind.CommaToken),
-                                            Parameter(
-                                                    Identifier("schema"))
-                                                .WithType(
-                                                    IdentifierName("ISchema"))
-                                        })))
-                            .WithSemicolonToken(
-                                Token(SyntaxKind.SemicolonToken))));
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Generators/UnionTypeModelGenerator.cs b/src/graphql.generator.core/Generators/UnionTypeModelGenerator.cs
deleted file mode 100644
index edbf7d9dc..000000000
--- a/src/graphql.generator.core/Generators/UnionTypeModelGenerator.cs
+++ /dev/null
@@ -1,58 +0,0 @@
-using System.Collections.Generic;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.TypeSystem;
-using static Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
-
-namespace Tanka.GraphQL.Generator.Core.Generators
-{
-    internal class UnionTypeModelGenerator
-    {
-        private readonly UnionType _unionType;
-        private readonly SchemaBuilder _schema;
-
-        public UnionTypeModelGenerator(UnionType unionType, SchemaBuilder schema)
-        {
-            _unionType = unionType;
-            _schema = schema;
-        }
-
-        public MemberDeclarationSyntax Generate()
-        {
-            var modelName = _unionType.Name.ToModelInterfaceName();
-            return InterfaceDeclaration(modelName)
-                .WithModifiers(
-                    TokenList(
-                        Token(SyntaxKind.PublicKeyword),
-                        Token(SyntaxKind.PartialKeyword)))
-                .WithLeadingTrivia(CodeModel.ToXmlComment(_unionType.Description))
-                .WithMembers(
-                    List(GenerateProperties()));
-        }
-
-        private IEnumerable<MemberDeclarationSyntax> GenerateProperties()
-        {
-            var props = new List<MemberDeclarationSyntax>
-            {
-                CodeModel.TypenameProperty(_unionType.Name)
-            };
-
-            /*var fields = _schema.GetFields(_unionType);
-
-            foreach (var field in fields)
-            {
-                if (ObjectTypeAbstractControllerBaseGenerator.IsAbstract(
-                    _schema,
-                    _unionType,
-                    field))
-                    continue;
-
-                props.Add(GenerateProperty(field));
-            }*/
-
-            return props;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Internal/SchemaBuilderExtensions.cs b/src/graphql.generator.core/Internal/SchemaBuilderExtensions.cs
deleted file mode 100644
index 4dcb1d722..000000000
--- a/src/graphql.generator.core/Internal/SchemaBuilderExtensions.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using Tanka.GraphQL.TypeSystem;
-
-// ReSharper disable CheckNamespace
-
-namespace Tanka.GraphQL.SchemaBuilding
-{
-    internal static class SchemaBuilderExtensions
-    {
-        public static IEnumerable<KeyValuePair<string, IField>> GetFields(
-            this SchemaBuilder builder, ComplexType objectType)
-        {
-            var fields = new List<KeyValuePair<string, IField>>();
-            builder.Connections(connections =>
-                fields = connections.GetFields(objectType).ToList());
-
-            return fields;
-        }
-
-        public static List<KeyValuePair<string, InputObjectField>> GetInputFields(
-            this SchemaBuilder builder, InputObjectType inputObjectType)
-        {
-            var fields = new List<KeyValuePair<string, InputObjectField>>();
-            builder.Connections(connections =>
-                fields = connections.GetInputFields(inputObjectType).ToList());
-
-            return fields;
-        }
-
-        public static bool IsSubscriptionType(this SchemaBuilder builder, ComplexType objectType)
-        {
-            return builder.SubscriptionTypeName == objectType.Name;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/Internal/TypeExtensions.cs b/src/graphql.generator.core/Internal/TypeExtensions.cs
deleted file mode 100644
index 6b7457abf..000000000
--- a/src/graphql.generator.core/Internal/TypeExtensions.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.ValueResolution
-{
-    internal static class TypeExtensions
-    {
-        public static bool IsList(this IType type)
-        {
-            if (type is NonNull nonNull)
-            {
-                return IsList(nonNull.OfType);
-            }
-
-            if (type is List)
-                return true;
-
-            return false;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/NameExtensions.cs b/src/graphql.generator.core/NameExtensions.cs
deleted file mode 100644
index 29d81055e..000000000
--- a/src/graphql.generator.core/NameExtensions.cs
+++ /dev/null
@@ -1,86 +0,0 @@
-using System;
-using Microsoft.CodeAnalysis.CSharp;
-
-namespace Tanka.GraphQL.Generator.Core
-{
-    public static class NameExtensions
-    {
-        public static string ToControllerName(this string name)
-        {
-            if (name == null) throw new ArgumentNullException(nameof(name));
-
-            return $"{name}Controller";
-        }
-
-        public static string ToInterfaceName(this string name)
-        {
-            var capitalized = name
-                .Capitalize();
-
-            return $"I{capitalized}";
-        }
-
-        public static string ToModelName(this string name)
-        {
-            if (string.IsNullOrEmpty(name)) throw new ArgumentException("Value cannot be null or empty.", nameof(name));
-
-            return name
-                .Capitalize();
-        }
-
-        public static string ToModelInterfaceName(this string name)
-        {
-            return name.ToModelName().ToInterfaceName();
-        }
-
-        public static string ToFieldResolversName(this string name)
-        {
-            if (name == null) throw new ArgumentNullException(nameof(name));
-            return $"{name}Fields";
-        }
-
-        public static string ToSchemaResolversName(this string name)
-        {
-            if (name == null) throw new ArgumentNullException(nameof(name));
-            return $"{name}Resolvers";
-        }
-
-        public static string ToFieldArgumentName(this string name)
-        {
-            return name.Sanitize();
-        }
-
-        public static string ToFieldResolverName(this string name)
-        {
-            return name
-                .Capitalize();
-        }
-
-        public static string Sanitize(this string name)
-        {
-            if (name.IsKeyword()) return $"_{name}";
-
-            return name;
-        }
-
-        public static bool IsKeyword(this string name)
-        {
-            var isAnyKeyword = SyntaxFacts.GetKeywordKind(name) != SyntaxKind.None
-                               || SyntaxFacts.GetContextualKeywordKind(name) != SyntaxKind.None;
-
-            return isAnyKeyword;
-        }
-
-        public static string ToServiceBuilderName(this string name)
-        {
-            return $"{name.Capitalize()}ServicesBuilder";
-        }
-
-        private static string Capitalize(this string name)
-        {
-            if (string.IsNullOrEmpty(name)) throw new ArgumentException("Value cannot be null or empty.", nameof(name));
-
-            return $"{name.Substring(0, 1).ToUpperInvariant()}{name.Substring(1)}";
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.core/graphql.generator.core.csproj b/src/graphql.generator.core/graphql.generator.core.csproj
deleted file mode 100644
index 5a2b38b3a..000000000
--- a/src/graphql.generator.core/graphql.generator.core.csproj
+++ /dev/null
@@ -1,17 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>Tanka.GraphQL.Generator.Core</RootNamespace>
-    <AssemblyName>tanka.graphql.generator.core</AssemblyName>
-    <IsPackable>false</IsPackable>
-  </PropertyGroup>
-  <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.11.0" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\graphql.server\graphql.server.csproj" />
-    <ProjectReference Include="..\graphql\graphql.csproj" />
-  </ItemGroup>
-
-</Project>
\ No newline at end of file
diff --git a/src/graphql.generator.tool/GenerateCommandOptions.cs b/src/graphql.generator.tool/GenerateCommandOptions.cs
deleted file mode 100644
index 2f264e5ea..000000000
--- a/src/graphql.generator.tool/GenerateCommandOptions.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using CommandLine;
-
-namespace Tanka.GraphQL.Generator.Tool
-{
-    [Verb("gen-model")]
-    public class GenerateCommandOptions
-    {
-        [Option('f', "file", Required = true, HelpText = "Input file")]
-        public string InputFile { get; set; } = string.Empty;
-
-        [Option('o', "output", Required = true, HelpText = "Output file")]
-        public string OutputFile { get; set; } = string.Empty;
-
-        [Option('n', "namespace", HelpText = "Namespace")]
-        public string Namespace { get; set; } = string.Empty;
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.tool/Program.cs b/src/graphql.generator.tool/Program.cs
deleted file mode 100644
index 2a541df69..000000000
--- a/src/graphql.generator.tool/Program.cs
+++ /dev/null
@@ -1,51 +0,0 @@
-using System;
-using System.IO;
-using System.Threading.Tasks;
-using CommandLine;
-using Tanka.GraphQL.Generator.Core;
-
-namespace Tanka.GraphQL.Generator.Tool
-{
-    public class Program
-    {
-        private static async Task<int> Main(string[] args)
-        {
-            var result = CommandLine.Parser.Default.ParseArguments<GenerateCommandOptions>(args);
-            var retCode = await result.MapResult(
-                RunGenerateCommand,
-                _ => Task.FromResult(1));
-
-            return retCode;
-        }
-
-        private static async Task<int> RunGenerateCommand(GenerateCommandOptions opts)
-        {
-            try
-            {
-                var input = Path.GetFullPath(opts.InputFile);
-                var output = Path.GetFullPath(opts.OutputFile);
-
-                if (!File.Exists(input))
-                {
-                    throw new FileNotFoundException(
-                        $"Input GraphQL file not found", input);
-                }
-
-                var generator = new CodeGenerator(input, opts.Namespace);
-                var unit = await generator.Generate();
-                var sourceText = unit.ToFullString();
-
-                Directory.CreateDirectory(Path.GetDirectoryName(output));
-                await File.WriteAllTextAsync(output, sourceText);
-            }
-            catch (Exception e)
-            {
-                Console.Error.WriteLine(e);
-                return 1;
-            }
-
-
-            return 0;
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.tool/Properties/launchSettings.json b/src/graphql.generator.tool/Properties/launchSettings.json
deleted file mode 100644
index 2d170d953..000000000
--- a/src/graphql.generator.tool/Properties/launchSettings.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "profiles": {
-    "generator.tool": {
-      "commandName": "Project",
-      "commandLineArgs": "gen -f ../../../../../tests/generator-tests/Data/CRM.graphql -o output"
-    }
-  }
-}
\ No newline at end of file
diff --git a/src/graphql.generator.tool/graphql.generator.tool.csproj b/src/graphql.generator.tool/graphql.generator.tool.csproj
deleted file mode 100644
index b8bf51d6c..000000000
--- a/src/graphql.generator.tool/graphql.generator.tool.csproj
+++ /dev/null
@@ -1,23 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>Tanka.GraphQL.Generator.Tool</RootNamespace>
-    <AssemblyName>tanka.graphql.generator.tool</AssemblyName>
-    <PackAsTool>true</PackAsTool>
-    <ToolCommandName>dotnet-tanka-graphql</ToolCommandName>
-    <Description>Code generator for Tanka GraphQL library</Description>
-    <PackageTags>graphql,tanka,resolvers,generator,msbuild</PackageTags>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="CommandLineParser" Version="2.8.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.11.0" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\graphql.generator.core\graphql.generator.core.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/src/graphql.generator/SchemaGenerator.cs b/src/graphql.generator/SchemaGenerator.cs
deleted file mode 100644
index 2409b7ae2..000000000
--- a/src/graphql.generator/SchemaGenerator.cs
+++ /dev/null
@@ -1,177 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.IO;
-using System.Text;
-using System.Text.RegularExpressions;
-using Microsoft.Build.Framework;
-using Microsoft.Build.Utilities;
-
-namespace Tanka.GraphQL.Generator
-{
-    public class SchemaGenerator : Task
-    {
-        [Required] public string Command { get; set; } = string.Empty;
-
-        public string? CommandArgs { get; set; }
-
-        [Required] public string RootNamespace { get; set; } = string.Empty;
-
-        public bool Force { get; set; }
-
-        [Required] public ITaskItem[] InputFiles { get; set; } = new ITaskItem[0];
-
-        [Output] public ITaskItem[] OutputFiles { get; set; } = new ITaskItem[0];
-
-        public override bool Execute()
-        {
-            if (InputFiles == null)
-                return true;
-
-            var outputFiles = new List<ITaskItem>();
-            foreach (var inputFile in InputFiles)
-            {
-                var output = RunGenerator(inputFile);
-
-                if (output == null)
-                    return false;
-
-                outputFiles.Add(output);
-            }
-
-            OutputFiles = outputFiles.ToArray();
-
-            return true;
-        }
-
-        private ITaskItem? RunGenerator(ITaskItem inputFile)
-        {
-            var inputFilePath = Path.GetFullPath(inputFile.ItemSpec);
-            var outputItemSpec = inputFile.GetMetadata("Code");
-
-            if (!File.Exists(inputFilePath))
-                return null;
-
-            if (string.IsNullOrEmpty(outputItemSpec))
-            {
-                Log.LogError($"Item {inputFile} is missing 'Code' metadata entry. Cannot generate code.");
-                return null;
-            }
-
-            var outputFilePath = outputItemSpec;
-
-            if (Path.IsPathRooted(outputFilePath))
-                outputFilePath = Path.GetFullPath(outputFilePath);
-
-            // caching
-            if (!Force && File.Exists(outputFilePath))
-            {
-                var lastModified = File.GetLastWriteTimeUtc(inputFilePath);
-                var lastGenerated = File.GetLastWriteTimeUtc(outputFilePath);
-
-                // if file hasn't been changed since last time generated
-                if (lastModified < lastGenerated)
-                {
-                    Log.LogMessage(
-                        MessageImportance.High,
-                        $"Input file '{inputFilePath}' hasn't changed since last time generated");
-
-                    // return existing file
-                    return new TaskItem(outputFilePath);
-                }
-            }
-
-            Log.LogMessage($"In: {inputFilePath}");
-            Log.LogMessage($"Out: {outputFilePath}");
-
-            var command = Command.Trim();
-            var args = GetCommandArgs(inputFilePath, outputFilePath, ToNamespace(inputFile.ItemSpec));
-            Log.LogCommandLine($"{command} {args}");
-
-            if (!RunGeneratorCommand(command, args))
-                return null;
-
-            return new TaskItem(outputFilePath);
-        }
-
-        private bool RunGeneratorCommand(string command, string args)
-        {
-            try
-            {
-                using var process = Process.Start(new ProcessStartInfo(command)
-                {
-                    Arguments = args,
-                    UseShellExecute = false,
-                    RedirectStandardError = true,
-                    RedirectStandardOutput = true
-                });
-
-                if (process == null)
-                    return false;
-
-                process.WaitForExit();
-
-                var output = process.StandardOutput.ReadToEnd();
-                var error = process.StandardError.ReadToEnd();
-
-                if (!string.IsNullOrEmpty(output))
-                    Log.LogMessage(output);
-
-                if (!string.IsNullOrEmpty(error))
-                    Log.LogError(error);
-
-                if (process.ExitCode > 0)
-                    return false;
-
-                return true;
-            }
-            catch (Exception e)
-            {
-                Log.LogError($"Failed to execute '{command} {args}'");
-                Log.LogErrorFromException(e);
-                return false;
-            }
-        }
-
-        private string ToNamespace(string itemSpec)
-        {
-            var dir = Path.GetDirectoryName(itemSpec);
-
-            if (dir == null)
-                throw new InvalidOperationException($"Could not get directory name from '{itemSpec}'.");
-
-            return Regex.Replace(dir, "\\s+", "")
-                .Replace(Path.DirectorySeparatorChar, '.')
-                .Replace(Path.AltDirectorySeparatorChar, '.');
-        }
-
-        private string GetCommandArgs(string inputFilePath, string outputFilePath, string itemNamespace)
-        {
-            var builder = new StringBuilder();
-
-            // add args if given
-            if (!string.IsNullOrEmpty(CommandArgs))
-            {
-                builder.Append(CommandArgs!.Trim());
-                builder.Append(" ");
-            }
-
-            // namespace
-            var ns = RootNamespace;
-            if (!string.IsNullOrEmpty(itemNamespace))
-                ns = $"{ns}.{itemNamespace}";
-
-            builder.Append($"-n {ns}");
-            builder.Append(" ");
-
-            // input
-            builder.Append($"-f {inputFilePath}");
-            builder.Append(" ");
-
-            // output
-            builder.Append($"-o {outputFilePath}");
-
-            return builder.ToString();
-        }
-    }
-}
\ No newline at end of file
diff --git a/src/graphql.generator/build/graphql.xaml b/src/graphql.generator/build/graphql.xaml
deleted file mode 100644
index c3ddc9233..000000000
--- a/src/graphql.generator/build/graphql.xaml
+++ /dev/null
@@ -1,77 +0,0 @@
-<ProjectSchemaDefinitions xmlns="http://schemas.microsoft.com/build/2009/properties">
-    <FileExtension Name=".graphql"
-                   ContentType="GraphQLFile" />
-
-    <ContentType Name="GraphQLFile"
-                 DisplayName="GraphQL SDL file"
-                 ItemType="GraphQL" />
-
-    <ItemType Name="GraphQL"
-              DisplayName="GraphQL SDL" />
-
-    <Rule Name="GraphQL"
-          DisplayName="File Properties"
-          PageTemplate="generic"
-          Description="File Properties"
-          OverrideMode="Extend">
-        <Rule.DataSource>
-            <DataSource Persistence="ProjectFile" Label="Configuration" ItemType="GraphQL"
-                        HasConfigurationCondition="false" SourceOfDefaultValue="AfterContext" />
-        </Rule.DataSource>
-
-        <Rule.Categories>
-            <Category Name="Advanced" DisplayName="Advanced" />
-            <Category Name="Misc" DisplayName="Misc" />
-        </Rule.Categories>
-
-        <DynamicEnumProperty Name="{}{ItemType}" DisplayName="Build Action" Category="Advanced"
-                             Description="How the file relates to the build and deployment processes."
-                             EnumProvider="ItemTypes" />
-
-        <StringProperty Name="Identity" Visible="false" ReadOnly="true">
-            <StringProperty.DataSource>
-                <DataSource Persistence="Intrinsic" ItemType="GraphQL"
-                            PersistedName="Identity" SourceOfDefaultValue="AfterContext" />
-            </StringProperty.DataSource>
-        </StringProperty>
-
-        <StringProperty Name="FullPath"
-                        DisplayName="Full Path"
-                        ReadOnly="true"
-                        Category="Misc"
-                        Description="Location of the file.">
-            <StringProperty.DataSource>
-                <DataSource Persistence="Intrinsic" ItemType="GraphQL"
-                            PersistedName="FullPath" SourceOfDefaultValue="AfterContext" />
-            </StringProperty.DataSource>
-        </StringProperty>
-
-        <StringProperty Name="FileNameAndExtension"
-                        DisplayName="File Name"
-                        ReadOnly="true"
-                        Category="Misc"
-                        Description="Name of the file or folder.">
-            <StringProperty.DataSource>
-                <DataSource Persistence="Intrinsic" ItemType="GraphQL"
-                            PersistedName="FileNameAndExtension" SourceOfDefaultValue="AfterContext" />
-            </StringProperty.DataSource>
-        </StringProperty>
-
-        <BoolProperty Name="Visible" Visible="false" Default="true" />
-
-        <StringProperty Name="DependentUpon" Visible="false">
-            <StringProperty.Metadata>
-                <NameValuePair Name="DoNotCopyAcrossProjects" Value="true" />
-            </StringProperty.Metadata>
-        </StringProperty>
-
-        <StringProperty Name="Link" Visible="false">
-            <StringProperty.DataSource>
-                <DataSource SourceOfDefaultValue="AfterContext" />
-            </StringProperty.DataSource>
-            <StringProperty.Metadata>
-                <NameValuePair Name="DoNotCopyAcrossProjects" Value="true" />
-            </StringProperty.Metadata>
-        </StringProperty>
-    </Rule>
-</ProjectSchemaDefinitions>
\ No newline at end of file
diff --git a/src/graphql.generator/build/tanka.graphql.generator.targets b/src/graphql.generator/build/tanka.graphql.generator.targets
deleted file mode 100644
index ab35eeab7..000000000
--- a/src/graphql.generator/build/tanka.graphql.generator.targets
+++ /dev/null
@@ -1,96 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<Project
-  xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <TankaSchemaTaskAssembly Condition="'$(TankaSchemaTaskAssembly)' == ''">netstandard2.0\tanka.graphql.generator.dll</TankaSchemaTaskAssembly>
-    <TankaGeneratorToolCommand Condition="'$(TankaGeneratorToolCommand)' == ''">dotnet</TankaGeneratorToolCommand>
-    <TankaGeneratorToolCommandArgs Condition="'$(TankaGeneratorToolCommandArgs)' == ''">tanka-graphql gen-model</TankaGeneratorToolCommandArgs>
-    <TankaGeneratorForce Condition="'$(TankaGeneratorForce)' == ''">false</TankaGeneratorForce>
-  </PropertyGroup>
-
-  <UsingTask AssemblyFile="$(TankaSchemaTaskAssembly)" TaskName="SchemaGenerator" />
-  
-  <ItemGroup>
-    <PropertyPageSchema Include="$(MSBuildThisFileDirectory)tanka.graphql.generator.xaml">
-      <Context>File;BrowseObject</Context>
-    </PropertyPageSchema>
-    <PropertyPageSchema Include="$(MSBuildThisFileDirectory)graphql.xaml">
-      <Context>File;BrowseObject</Context>
-    </PropertyPageSchema>
-
-    <AvailableItemName Include="GraphQL" />
-  </ItemGroup>
-
-  <ItemDefinitionGroup>
-    <GraphQL>
-      <Generator>MSBuild:GenerateGraphQL</Generator>
-      <Code>%(RelativeDir)%(Filename).g.cs</Code>
-      <Generate>Complete</Generate>
-    </GraphQL>
-  </ItemDefinitionGroup>
-
-  <Target Name="BeforeGenerateGraphQL" />
-  <Target Name="AfterGenerateGraphQL" />
-
-  <Target Name="PrepareGenerateGraphQL">
-    <PropertyGroup>
-      <CodeGenerationRoot Condition="'$(CodeGenerationRoot)' == ''">$(MSBuildProjectDirectory)\$(IntermediateOutputPath)</CodeGenerationRoot>
-    </PropertyGroup>
-    <ItemGroup>
-      <GraphQL Update="@(GraphQL)">
-        <Code>$(CodeGenerationRoot)%(Code)</Code>
-      </GraphQL>
-    </ItemGroup>
-    <ItemGroup>
-      <GraphQL Remove="@(GraphQL)" Condition=" %(Generate) == 'None' " />
-    </ItemGroup>
-  </Target>
-
-  <Target
-    Name="GenerateGraphQLCode"
-    Condition="'@(GraphQL)' != ''">
-    <SchemaGenerator
-      Command="$(TankaGeneratorToolCommand)"
-      CommandArgs="$(TankaGeneratorToolCommandArgs)"
-      InputFiles="@(GraphQL)"
-      RootNamespace="$(RootNamespace)"
-      Force="$(TankaGeneratorForce)">
-      <Output TaskParameter="OutputFiles" ItemName="SchemaCode" />
-    </SchemaGenerator>
-    <ItemGroup>
-      <Compile Include="@(SchemaCode)" />
-      <!-- Extend to be cleaned on clean-->
-      <FileWrites Include="@(SchemaCode)" />
-    </ItemGroup>
-  </Target>
-
-  <PropertyGroup>
-    <GenerateGraphQLDependsOn>
-      $(GenerateGraphQLDependsOn);
-      BeforeGenerateGraphQL;
-      PrepareGenerateGraphQL;
-      GenerateGraphQLCode;
-      AfterGenerateGraphQL;
-    </GenerateGraphQLDependsOn>
-  </PropertyGroup>
-
-  <Target Name="GenerateGraphQL"
-          DependsOnTargets="$(GenerateGraphQLDependsOn)"
-          BeforeTargets="CoreCompile">
-  </Target>
-
-  <!--<Target Name="_GraphQL_SourceFilesProjectOutputGroup"
-          BeforeTargets="SourceFilesProjectOutputGroup"
-          Condition=" '@(GraphQL)' != '' " >
-    <ItemGroup>
-      <SourceFilesProjectOutputGroupOutput Include="@(GraphQL->'%(FullPath)')" />
-    </ItemGroup>
-  </Target>-->
-
-  <Target Name="EmbedGraphQL" BeforeTargets="PrepareForBuild">
-    <ItemGroup>
-      <EmbeddedResource Include="@(GraphQL)" />
-    </ItemGroup>
-  </Target>
-</Project>
\ No newline at end of file
diff --git a/src/graphql.generator/build/tanka.graphql.generator.xaml b/src/graphql.generator/build/tanka.graphql.generator.xaml
deleted file mode 100644
index d7df0b14c..000000000
--- a/src/graphql.generator/build/tanka.graphql.generator.xaml
+++ /dev/null
@@ -1,39 +0,0 @@
-<ProjectSchemaDefinitions xmlns="http://schemas.microsoft.com/build/2009/properties">
-    <Rule Name="GraphQL"
-          DisplayName="File Properties"
-          PageTemplate="generic"
-          Description="File Properties"
-          OverrideMode="Extend">
-        <Rule.DataSource>
-            <DataSource Persistence="ProjectFile" Label="Configuration" ItemType="GraphQL"
-                        HasConfigurationCondition="false" SourceOfDefaultValue="AfterContext" />
-        </Rule.DataSource>
-
-        <Rule.Categories>
-            <Category Name="Tanka" DisplayName="Tanka" />
-        </Rule.Categories>
-
-        <EnumProperty Name="Access" DisplayName="Class Access"
-                      Category="Tanka"
-                      Description="Public or internal access modifier on generated classes.">
-            <EnumValue Name="Public" DisplayName="Public" IsDefault="true" />
-            <EnumValue Name="Internal" DisplayName="Internal" />
-            <EnumProperty.DataSource>
-                <DataSource ItemType="GraphQL" SourceOfDefaultValue="AfterContext"
-                            PersistenceStyle="Attribute" HasConfigurationCondition="false" />
-            </EnumProperty.DataSource>
-        </EnumProperty>
-
-        <EnumProperty Name="Generate" DisplayName="Generate"
-                      Category="Tanka"
-                      Description="Object model generated by the generator">
-            <EnumValue Name="Complete" DisplayName="Complete" IsDefault="true" />
-            <EnumValue Name="None" DisplayName="None" />
-            <EnumProperty.DataSource>
-                <DataSource ItemType="GraphQL" SourceOfDefaultValue="AfterContext"
-                            PersistenceStyle="Attribute" HasConfigurationCondition="false" />
-            </EnumProperty.DataSource>
-        </EnumProperty>
-
-    </Rule>
-</ProjectSchemaDefinitions>
\ No newline at end of file
diff --git a/src/graphql.generator/graphql.generator.csproj b/src/graphql.generator/graphql.generator.csproj
deleted file mode 100644
index 5a34d8683..000000000
--- a/src/graphql.generator/graphql.generator.csproj
+++ /dev/null
@@ -1,31 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
-    <NoPackageAnalysis>true</NoPackageAnalysis>
-    <BuildOutputTargetFolder>build</BuildOutputTargetFolder>
-    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
-    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
-    <AssemblyName>tanka.graphql.generator</AssemblyName>
-    <RootNamespace>Tanka.GraphQL.Generator</RootNamespace>
-    <IsPackable>true</IsPackable>
-    <Description>Code generator for Tanka GraphQL library</Description>
-    <PackageTags>graphql,tanka,resolvers,generator,msbuild</PackageTags>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <Content Include="build\*" PackagePath="build\">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Build.Framework" Version="16.11.0">
-      <PrivateAssets>All</PrivateAssets>
-    </PackageReference>
-    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="16.11.0">
-      <PrivateAssets>All</PrivateAssets>
-    </PackageReference>
-  </ItemGroup>
-  
-</Project>
diff --git a/src/graphql.language/Constants.cs b/src/graphql.language/Constants.cs
index 5244d275c..03711ab4e 100644
--- a/src/graphql.language/Constants.cs
+++ b/src/graphql.language/Constants.cs
@@ -2,183 +2,182 @@
 using System.Runtime.CompilerServices;
 using System.Text;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class Constants
 {
-    public static class Constants
+    public const byte Hyphen = (byte)'-';
+    public const byte Underscore = (byte)'_';
+    public const byte Plus = (byte)'+';
+    public const byte Minus = (byte)'-';
+    public const byte Backslash = (byte)'\\';
+    public const byte ForwardSlash = (byte)'/';
+    public const byte Backspace = (byte)'\b';
+    public const byte FormFeed = (byte)'\f';
+    public const byte ExclamationMark = (byte)'!';
+    public const byte Dollar = (byte)'$';
+    public const byte Ampersand = (byte)'&';
+    public const byte LeftParenthesis = (byte)'(';
+    public const byte RightParenthesis = (byte)')';
+    public const byte Colon = (byte)':';
+    public const byte Equal = (byte)'=';
+    public const byte At = (byte)'@';
+    public const byte LeftBracket = (byte)'[';
+    public const byte RightBracket = (byte)']';
+    public const byte LeftBrace = (byte)'{';
+    public const byte RightBrace = (byte)'}';
+    public const byte Pipe = (byte)'|';
+    public const byte Dot = (byte)'.';
+    public const byte Space = (byte)' ';
+    public const byte Hash = (byte)'#';
+    public const byte Tab = (byte)'\t';
+    public const byte NewLine = (byte)'\n';
+    public const byte Return = (byte)'\r';
+    public const byte Quote = (byte)'"';
+    public const byte Comma = (byte)',';
+
+    // ReSharper disable once InconsistentNaming
+    public const byte e = (byte)'e';
+    public const byte E = (byte)'E';
+
+    public static readonly bool[] IsLetterOrUnderscore = new bool[256];
+    public static readonly bool[] IsLetterOrDigitOrUnderscore = new bool[256];
+    public static readonly bool[] IsReturnOrNewLine = new bool[256];
+    public static readonly bool[] IsMinusOrNonZeroDigit = new bool[256];
+    public static readonly bool[] IsMinusOrZeroOrDigit = new bool[256];
+    public static readonly bool[] IsDigit = new bool[256];
+
+    public static ReadOnlyMemory<byte> Bom = new(
+        Encoding.UTF8.GetPreamble());
+
+    private static readonly bool[] _isPunctuator = new bool[256];
+
+    public static ReadOnlyMemory<byte> Spread = new(new[]
     {
-        public const byte Hyphen = (byte) '-';
-        public const byte Underscore = (byte) '_';
-        public const byte Plus = (byte) '+';
-        public const byte Minus = (byte) '-';
-        public const byte Backslash = (byte) '\\';
-        public const byte ForwardSlash = (byte) '/';
-        public const byte Backspace = (byte) '\b';
-        public const byte FormFeed = (byte) '\f';
-        public const byte ExclamationMark = (byte) '!';
-        public const byte Dollar = (byte) '$';
-        public const byte Ampersand = (byte) '&';
-        public const byte LeftParenthesis = (byte) '(';
-        public const byte RightParenthesis = (byte) ')';
-        public const byte Colon = (byte) ':';
-        public const byte Equal = (byte) '=';
-        public const byte At = (byte) '@';
-        public const byte LeftBracket = (byte) '[';
-        public const byte RightBracket = (byte) ']';
-        public const byte LeftBrace = (byte) '{';
-        public const byte RightBrace = (byte) '}';
-        public const byte Pipe = (byte) '|';
-        public const byte Dot = (byte) '.';
-        public const byte Space = (byte) ' ';
-        public const byte Hash = (byte) '#';
-        public const byte Tab = (byte) '\t';
-        public const byte NewLine = (byte) '\n';
-        public const byte Return = (byte) '\r';
-        public const byte Quote = (byte) '"';
-        public const byte Comma = (byte) ',';
-
-        // ReSharper disable once InconsistentNaming
-        public const byte e = (byte) 'e';
-        public const byte E = (byte) 'E';
-
-        private static readonly bool[] _isPunctuator = new bool[256];
-
-        public static readonly bool[] IsLetterOrUnderscore = new bool[256];
-        public static readonly bool[] IsLetterOrDigitOrUnderscore = new bool[256];
-        public static readonly bool[] IsReturnOrNewLine = new bool[256];
-        public static readonly bool[] IsMinusOrNonZeroDigit = new bool[256];
-        public static readonly bool[] IsMinusOrZeroOrDigit = new bool[256];
-        public static readonly bool[] IsDigit = new bool[256];
-
-        public static ReadOnlyMemory<byte> Bom = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetPreamble());
-
-        public static ReadOnlyMemory<byte> Spread = new ReadOnlyMemory<byte>(new[]
-        {
-            Dot,
-            Dot,
-            Dot
-        });
+        Dot,
+        Dot,
+        Dot
+    });
 
-        public static ReadOnlyMemory<byte> BlockString = new ReadOnlyMemory<byte>(new[]
-        {
-            Quote,
-            Quote,
-            Quote
-        });
+    public static ReadOnlyMemory<byte> BlockString = new(new[]
+    {
+        Quote,
+        Quote,
+        Quote
+    });
 
-        public static ReadOnlyMemory<byte> ReturnAndNewLine = new ReadOnlyMemory<byte>(new[]
-        {
-            Return,
-            NewLine
-        });
+    public static ReadOnlyMemory<byte> ReturnAndNewLine = new(new[]
+    {
+        Return,
+        NewLine
+    });
 
-        public static ReadOnlyMemory<byte> NewLineMemory = new ReadOnlyMemory<byte>(new[]
-        {
-            NewLine
-        });
+    public static ReadOnlyMemory<byte> NewLineMemory = new(new[]
+    {
+        NewLine
+    });
 
-        public static ReadOnlyMemory<byte> Punctuators = new ReadOnlyMemory<byte>(new[]
-        {
-            ExclamationMark,
-            Dollar,
-            Ampersand,
-            LeftParenthesis,
-            RightParenthesis,
-            Colon,
-            Equal,
-            At,
-            LeftBracket,
-            RightBracket,
-            LeftBrace,
-            Pipe,
-            RightBrace
-        });
-
-
-        static Constants()
-        {
-            foreach (var punctuator in Punctuators.Span)
-                _isPunctuator[punctuator] = true;
+    public static ReadOnlyMemory<byte> Punctuators = new(new[]
+    {
+        ExclamationMark,
+        Dollar,
+        Ampersand,
+        LeftParenthesis,
+        RightParenthesis,
+        Colon,
+        Equal,
+        At,
+        LeftBracket,
+        RightBracket,
+        LeftBrace,
+        Pipe,
+        RightBrace
+    });
+
+
+    static Constants()
+    {
+        foreach (var punctuator in Punctuators.Span)
+            _isPunctuator[punctuator] = true;
 
-            /* NameStart */
-            for (var c = 'a'; c <= 'z'; c++)
-                IsLetterOrUnderscore[c] = true;
+        /* NameStart */
+        for (var c = 'a'; c <= 'z'; c++)
+            IsLetterOrUnderscore[c] = true;
 
-            for (var c = 'A'; c <= 'Z'; c++)
-                IsLetterOrUnderscore[c] = true;
+        for (var c = 'A'; c <= 'Z'; c++)
+            IsLetterOrUnderscore[c] = true;
 
-            IsLetterOrUnderscore[Underscore] = true;
+        IsLetterOrUnderscore[Underscore] = true;
 
-            /* NameContinue */
-            for (var c = 'a'; c <= 'z'; c++)
-                IsLetterOrDigitOrUnderscore[c] = true;
+        /* NameContinue */
+        for (var c = 'a'; c <= 'z'; c++)
+            IsLetterOrDigitOrUnderscore[c] = true;
 
-            for (var c = 'A'; c <= 'Z'; c++)
-                IsLetterOrDigitOrUnderscore[c] = true;
+        for (var c = 'A'; c <= 'Z'; c++)
+            IsLetterOrDigitOrUnderscore[c] = true;
 
-            for (var d = '0'; d <= '9'; d++) IsLetterOrDigitOrUnderscore[d] = true;
+        for (var d = '0'; d <= '9'; d++) IsLetterOrDigitOrUnderscore[d] = true;
 
-            IsLetterOrDigitOrUnderscore[Underscore] = true;
+        IsLetterOrDigitOrUnderscore[Underscore] = true;
 
-            /* Return Or NewLine */
-            IsReturnOrNewLine[Return] = true;
-            IsReturnOrNewLine[NewLine] = true;
+        /* Return Or NewLine */
+        IsReturnOrNewLine[Return] = true;
+        IsReturnOrNewLine[NewLine] = true;
 
-            /* Digit */
-            for (var d = '0'; d <= '9'; d++) IsDigit[d] = true;
+        /* Digit */
+        for (var d = '0'; d <= '9'; d++) IsDigit[d] = true;
 
-            /* Minus Or Digit */
-            for (var d = '1'; d <= '9'; d++)
-            {
-                IsMinusOrNonZeroDigit[d] = true;
-                IsMinusOrZeroOrDigit[d] = true;
-            }
+        /* Minus Or Digit */
+        for (var d = '1'; d <= '9'; d++)
+        {
+            IsMinusOrNonZeroDigit[d] = true;
+            IsMinusOrZeroOrDigit[d] = true;
+        }
 
-            IsMinusOrNonZeroDigit[Minus] = true;
-            IsMinusOrZeroOrDigit[Minus] = true;
+        IsMinusOrNonZeroDigit[Minus] = true;
+        IsMinusOrZeroOrDigit[Minus] = true;
 
-            /* Minus, Zero Or Digit */
-            IsMinusOrZeroOrDigit['0'] = true;
-        }
+        /* Minus, Zero Or Digit */
+        IsMinusOrZeroOrDigit['0'] = true;
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsPunctuator(in byte code)
-        {
-            return _isPunctuator[code];
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsPunctuator(in byte code)
+    {
+        return _isPunctuator[code];
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TokenKind GetTokenKind(in byte code)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static TokenKind GetTokenKind(in byte code)
+    {
+        return code switch
         {
-            return code switch
-            {
-                ExclamationMark => TokenKind.ExclamationMark,
-                Dollar => TokenKind.Dollar,
-                Ampersand => TokenKind.Ampersand,
-                LeftParenthesis => TokenKind.LeftParenthesis,
-                RightParenthesis => TokenKind.RightParenthesis,
-                Colon => TokenKind.Colon,
-                Equal => TokenKind.Equal,
-                At => TokenKind.At,
-                LeftBracket => TokenKind.LeftBracket,
-                RightBracket => TokenKind.RightBracket,
-                LeftBrace => TokenKind.LeftBrace,
-                Pipe => TokenKind.Pipe,
-                RightBrace => TokenKind.RightBrace,
-                _ => throw new InvalidOperationException($"Code '{code}' is not any TokenKind")
-            };
-        }
+            ExclamationMark => TokenKind.ExclamationMark,
+            Dollar => TokenKind.Dollar,
+            Ampersand => TokenKind.Ampersand,
+            LeftParenthesis => TokenKind.LeftParenthesis,
+            RightParenthesis => TokenKind.RightParenthesis,
+            Colon => TokenKind.Colon,
+            Equal => TokenKind.Equal,
+            At => TokenKind.At,
+            LeftBracket => TokenKind.LeftBracket,
+            RightBracket => TokenKind.RightBracket,
+            LeftBrace => TokenKind.LeftBrace,
+            Pipe => TokenKind.Pipe,
+            RightBrace => TokenKind.RightBrace,
+            _ => throw new InvalidOperationException($"Code '{code}' is not any TokenKind")
+        };
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsNameStart(in byte code)
-        {
-            return IsLetterOrUnderscore[code];
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsNameStart(in byte code)
+    {
+        return IsLetterOrUnderscore[code];
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsNumberStart(in byte value)
-        {
-            return IsMinusOrZeroOrDigit[value];
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsNumberStart(in byte value)
+    {
+        return IsMinusOrZeroOrDigit[value];
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/DocumentWalkerContextBase.cs b/src/graphql.language/DocumentWalkerContextBase.cs
index 9f6d45511..8cb4e5e6e 100644
--- a/src/graphql.language/DocumentWalkerContextBase.cs
+++ b/src/graphql.language/DocumentWalkerContextBase.cs
@@ -1,71 +1,73 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public abstract class DocumentWalkerContextBase
 {
-    public abstract class DocumentWalkerContextBase
-    {
-        private readonly Stack<INode> _nodes  = new Stack<INode>();
-        private readonly Stack<INode> _parents = new Stack<INode>();
-        private readonly Stack<ArrayState> _arrayStates = new Stack<ArrayState>();
+    private readonly Stack<ArrayState> _arrayStates = new();
+    private readonly Stack<INode> _nodes = new();
+    private readonly Stack<INode> _parents = new();
 
-        public IEnumerable<INode> Nodes => _nodes;
+    public INode Current => _nodes.Peek();
 
-        public INode Current => _nodes.Peek();
+    public ArrayState? CurrentArray => _arrayStates.TryPeek(out var state) ? state : null;
 
-        public INode? Parent => _parents.Count > 0 ? _parents.Peek(): null;
+    public IEnumerable<INode> Nodes => _nodes;
 
-        public ArrayState? CurrentArray => _arrayStates.TryPeek(out var state) ? state : null;
+    public INode? Parent => _parents.Count > 0 ? _parents.Peek() : null;
 
-        public void Push(INode node)
-        {
-            if (_nodes.Count > 0)
-                _parents.Push(_nodes.Peek());
+    public void Push(INode node)
+    {
+        if (_nodes.Count > 0)
+            _parents.Push(_nodes.Peek());
 
-            _nodes.Push(node);
-        }
+        _nodes.Push(node);
+    }
 
-        public ArrayState PushArrayState(ICollectionNode<INode> array)
-        {
-            var state = new ArrayState(array);
-            _arrayStates.Push(state);
-            return state;
-        }
+    public ArrayState PushArrayState(ICollectionNode<INode> array)
+    {
+        var state = new ArrayState(array);
+        _arrayStates.Push(state);
+        return state;
+    }
 
-        public ArrayState? PopArrayState()
-        {
-            _arrayStates.TryPop(out var state);
-            return state;
-        }
+    public ArrayState? PopArrayState()
+    {
+        _arrayStates.TryPop(out var state);
+        return state;
+    }
 
-        public INode Pop()
-        {
-            var node = _nodes.Pop();
-            _parents.TryPop(out _);
-            return node;
-        }
+    public INode Pop()
+    {
+        var node = _nodes.Pop();
+        _parents.TryPop(out _);
+        return node;
+    }
 
-        public bool Contains(INode node) => _nodes.Contains(node);
+    public bool Contains(INode node)
+    {
+        return _nodes.Contains(node);
     }
+}
 
-    public sealed class ArrayState
+public sealed class ArrayState
+{
+    public ArrayState(ICollectionNode<INode> array)
     {
-        public ICollectionNode<INode> Array { get; }
+        Array = array;
+    }
 
-        public ArrayState(ICollectionNode<INode> array)
-        {
-            Array = array;
-        }
+    public ICollectionNode<INode> Array { get; }
 
-        public int Count => Array.Count;
+    public int Count => Array.Count;
 
-        public int Index { get; set; }
+    public INode CurrentItem => Array[Index];
 
-        public INode CurrentItem => Array[Index];
+    public int Index { get; set; }
 
 
-        public bool IsFirst => Index == 0;
+    public bool IsFirst => Index == 0;
 
-        public bool IsLast => Index == Count - 1;
-    }
+    public bool IsLast => Index == Count - 1;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs b/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
index 058defc01..b5bce0dd1 100644
--- a/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/DirectiveDefinitionExtensions.cs
@@ -3,70 +3,69 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class DirectiveDefinitionExtensions
 {
-    public static class DirectiveDefinitionExtensions
+    public static bool TryGetArgument(
+        this DirectiveDefinition definition,
+        Name argumentName,
+        [NotNullWhen(true)] out InputValueDefinition? argument)
     {
-        public static bool TryGetArgument(
-            this DirectiveDefinition definition,
-            Name argumentName,
-            [NotNullWhen(true)]out InputValueDefinition? argument)
+        if (definition.Arguments is null)
         {
-            if (definition.Arguments is null)
-            {
-                argument = null;
-                return false;
-            }
-
-            return definition.Arguments.TryGet(argumentName, out argument);
+            argument = null;
+            return false;
         }
 
-        public static DirectiveDefinition WithDescription(this DirectiveDefinition definition,
-            in StringValue? description)
-        {
-            return new DirectiveDefinition(
-                description,
-                definition.Name,
-                definition.Arguments,
-                definition.IsRepeatable,
-                definition.DirectiveLocations,
-                definition.Location);
-        }
+        return definition.Arguments.TryGet(argumentName, out argument);
+    }
 
-        public static DirectiveDefinition WithName(this DirectiveDefinition definition,
-            in Name name)
-        {
-            return new DirectiveDefinition(
-                definition.Description,
-                name,
-                definition.Arguments,
-                definition.IsRepeatable,
-                definition.DirectiveLocations,
-                definition.Location);
-        }
+    public static DirectiveDefinition WithDescription(this DirectiveDefinition definition,
+        in StringValue? description)
+    {
+        return new DirectiveDefinition(
+            description,
+            definition.Name,
+            definition.Arguments,
+            definition.IsRepeatable,
+            definition.DirectiveLocations,
+            definition.Location);
+    }
 
-        public static DirectiveDefinition WithArguments(this DirectiveDefinition definition,
-            IReadOnlyList<InputValueDefinition> arguments)
-        {
-            return new DirectiveDefinition(
-                definition.Description,
-                definition.Name,
-                new ArgumentsDefinition(arguments), 
-                definition.IsRepeatable,
-                definition.DirectiveLocations,
-                definition.Location);
-        }
+    public static DirectiveDefinition WithName(this DirectiveDefinition definition,
+        in Name name)
+    {
+        return new DirectiveDefinition(
+            definition.Description,
+            name,
+            definition.Arguments,
+            definition.IsRepeatable,
+            definition.DirectiveLocations,
+            definition.Location);
+    }
 
-        public static DirectiveDefinition WithDirectiveLocations(this DirectiveDefinition definition,
-            IReadOnlyList<string> directiveLocations)
-        {
-            return new DirectiveDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Arguments,
-                definition.IsRepeatable,
-                directiveLocations,
-                definition.Location);
-        }
+    public static DirectiveDefinition WithArguments(this DirectiveDefinition definition,
+        IReadOnlyList<InputValueDefinition> arguments)
+    {
+        return new DirectiveDefinition(
+            definition.Description,
+            definition.Name,
+            new ArgumentsDefinition(arguments),
+            definition.IsRepeatable,
+            definition.DirectiveLocations,
+            definition.Location);
+    }
+
+    public static DirectiveDefinition WithDirectiveLocations(this DirectiveDefinition definition,
+        IReadOnlyList<string> directiveLocations)
+    {
+        return new DirectiveDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Arguments,
+            definition.IsRepeatable,
+            directiveLocations,
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/EnumDefinitionExtensions.cs b/src/graphql.language/Extensions/EnumDefinitionExtensions.cs
index c768ea0a9..fb3c26e72 100644
--- a/src/graphql.language/Extensions/EnumDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/EnumDefinitionExtensions.cs
@@ -2,52 +2,51 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class EnumDefinitionExtensions
 {
-    public static class EnumDefinitionExtensions
+    public static EnumDefinition WithDescription(this EnumDefinition definition,
+        in StringValue? description)
     {
-        public static EnumDefinition WithDescription(this EnumDefinition definition, 
-            in StringValue? description)
-        {
-            return new EnumDefinition(
-                description,
-                definition.Name,
-                definition.Directives,
-                definition.Values,
-                definition.Location);
-        }
+        return new EnumDefinition(
+            description,
+            definition.Name,
+            definition.Directives,
+            definition.Values,
+            definition.Location);
+    }
 
-        public static EnumDefinition WithName(this EnumDefinition definition, 
-            in Name name)
-        {
-            return new EnumDefinition(
-                definition.Description,
-                name,
-                definition.Directives,
-                definition.Values,
-                definition.Location);
-        }
+    public static EnumDefinition WithName(this EnumDefinition definition,
+        in Name name)
+    {
+        return new EnumDefinition(
+            definition.Description,
+            name,
+            definition.Directives,
+            definition.Values,
+            definition.Location);
+    }
 
-        public static EnumDefinition WithDirectives(this EnumDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new EnumDefinition(
-                definition.Description,
-                definition.Name,
-                directives != null ? new Directives(directives): null,
-                definition.Values,
-                definition.Location);
-        }
+    public static EnumDefinition WithDirectives(this EnumDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new EnumDefinition(
+            definition.Description,
+            definition.Name,
+            directives != null ? new Directives(directives) : null,
+            definition.Values,
+            definition.Location);
+    }
 
-        public static EnumDefinition WithValues(this EnumDefinition definition,
-            IReadOnlyList<EnumValueDefinition>? values)
-        {
-            return new EnumDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Directives,
-                values != null ? new EnumValuesDefinition(values) : null,
-                definition.Location);
-        }
+    public static EnumDefinition WithValues(this EnumDefinition definition,
+        IReadOnlyList<EnumValueDefinition>? values)
+    {
+        return new EnumDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Directives,
+            values != null ? new EnumValuesDefinition(values) : null,
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs b/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
index f820d3a88..2869272f5 100644
--- a/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/EnumValueDefinitionExtensions.cs
@@ -3,80 +3,76 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class EnumValueDefinitionExtensions
 {
-    public static class EnumValueDefinitionExtensions
+    public static bool IsDeprecated(
+        this EnumValueDefinition definition,
+        out string? reason)
     {
-        public static bool IsDeprecated(
-            this EnumValueDefinition definition,
-            out string? reason)
+        if (definition.Directives is null)
         {
-            if (definition.Directives is null)
-            {
-                reason = null;
-                return false;
-            }
-
-            if (definition.TryGetDirective("deprecated", out var directive))
-            {
-                if (directive.Arguments?.TryGet("reason", out var reasonArg) == true && reasonArg.Value is StringValue stringValue)
-                {
-                    reason = stringValue;
-                }
-                else
-                {
-                    reason = null;
-                }
-
-                return true;
-            }
-
             reason = null;
             return false;
         }
 
-        public static bool TryGetDirective(
-            this EnumValueDefinition definition,
-            Name directiveName,
-            [NotNullWhen(true)] out Directive? directive)
+        if (definition.TryGetDirective("deprecated", out var directive))
         {
-            if (definition.Directives is null)
-            {
-                directive = null;
-                return false;
-            }
+            if (directive.Arguments?.TryGet("reason", out var reasonArg) == true &&
+                reasonArg.Value is StringValue stringValue)
+                reason = stringValue;
+            else
+                reason = null;
 
-            return definition.Directives.TryGet(directiveName, out directive);
+            return true;
         }
 
-        public static EnumValueDefinition WithDescription(this EnumValueDefinition definition,
-            in StringValue? description)
-        {
-            return new EnumValueDefinition(
-                description,
-                definition.Value,
-                definition.Directives,
-                definition.Location);
-        }
+        reason = null;
+        return false;
+    }
 
-        public static EnumValueDefinition WithValue(this EnumValueDefinition definition,
-            in EnumValue value)
+    public static bool TryGetDirective(
+        this EnumValueDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
+    {
+        if (definition.Directives is null)
         {
-            return new EnumValueDefinition(
-                definition.Description,
-                value,
-                definition.Directives,
-                definition.Location);
+            directive = null;
+            return false;
         }
 
-        public static EnumValueDefinition WithDirectives(this EnumValueDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new EnumValueDefinition(
-                definition.Description,
-                definition.Value,
-                directives != null ? new Directives(directives) : null,
-                definition.Location);
-        }
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
+
+    public static EnumValueDefinition WithDescription(this EnumValueDefinition definition,
+        in StringValue? description)
+    {
+        return new EnumValueDefinition(
+            description,
+            definition.Value,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static EnumValueDefinition WithValue(this EnumValueDefinition definition,
+        in EnumValue value)
+    {
+        return new EnumValueDefinition(
+            definition.Description,
+            value,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static EnumValueDefinition WithDirectives(this EnumValueDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new EnumValueDefinition(
+            definition.Description,
+            definition.Value,
+            directives != null ? new Directives(directives) : null,
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/FieldDefinitionExtension.cs b/src/graphql.language/Extensions/FieldDefinitionExtension.cs
index d4b18e909..2933ca8eb 100644
--- a/src/graphql.language/Extensions/FieldDefinitionExtension.cs
+++ b/src/graphql.language/Extensions/FieldDefinitionExtension.cs
@@ -10,7 +10,7 @@ public static class FieldDefinitionExtension
     public static bool TryGetArgument(
         this FieldDefinition definition,
         Name argumentName,
-        [NotNullWhen(true)]out InputValueDefinition? argument)
+        [NotNullWhen(true)] out InputValueDefinition? argument)
     {
         if (definition.Arguments is null)
         {
@@ -33,14 +33,11 @@ public static bool IsDeprecated(
 
         if (definition.TryGetDirective("deprecated", out var directive))
         {
-            if (directive.Arguments?.TryGet("reason", out var reasonArg) == true && reasonArg.Value is StringValue stringValue)
-            {
+            if (directive.Arguments?.TryGet("reason", out var reasonArg) == true &&
+                reasonArg.Value is StringValue stringValue)
                 reason = stringValue;
-            }
             else
-            {
                 reason = null;
-            }
 
             return true;
         }
diff --git a/src/graphql.language/Extensions/FieldSelectionExtensions.cs b/src/graphql.language/Extensions/FieldSelectionExtensions.cs
index 10d2369d4..f346bec4b 100644
--- a/src/graphql.language/Extensions/FieldSelectionExtensions.cs
+++ b/src/graphql.language/Extensions/FieldSelectionExtensions.cs
@@ -1,23 +1,22 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class FieldSelectionExtensions
 {
-    public static class FieldSelectionExtensions
+    public static SelectionSet Merge(this IEnumerable<FieldSelection> fieldSelections)
     {
-        public static SelectionSet Merge(this IEnumerable<FieldSelection> fieldSelections)
-        {
-            var selections = new List<ISelection>();
-
-            foreach (var fieldSelection in fieldSelections)
-            {
-                var fieldSelectionSet = fieldSelection.SelectionSet;
+        var selections = new List<ISelection>();
 
-                if (fieldSelectionSet != null)
-                    selections.AddRange(fieldSelectionSet);
-            }
+        foreach (var fieldSelection in fieldSelections)
+        {
+            var fieldSelectionSet = fieldSelection.SelectionSet;
 
-            return new SelectionSet(selections);
+            if (fieldSelectionSet != null)
+                selections.AddRange(fieldSelectionSet);
         }
+
+        return new SelectionSet(selections);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/InputObjectDefinitionExtensions.cs b/src/graphql.language/Extensions/InputObjectDefinitionExtensions.cs
index a844d3d81..d7b4558f3 100644
--- a/src/graphql.language/Extensions/InputObjectDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/InputObjectDefinitionExtensions.cs
@@ -2,52 +2,51 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class InputObjectDefinitionExtensions
 {
-    public static class InputObjectDefinitionExtensions
+    public static InputObjectDefinition WithDescription(this InputObjectDefinition definition,
+        in StringValue? description)
     {
-        public static InputObjectDefinition WithDescription(this InputObjectDefinition definition, 
-            in StringValue? description)
-        {
-            return new InputObjectDefinition(
-                description,
-                definition.Name,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+        return new InputObjectDefinition(
+            description,
+            definition.Name,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InputObjectDefinition WithName(this InputObjectDefinition definition, 
-            in Name name)
-        {
-            return new InputObjectDefinition(
-                definition.Description,
-                name,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+    public static InputObjectDefinition WithName(this InputObjectDefinition definition,
+        in Name name)
+    {
+        return new InputObjectDefinition(
+            definition.Description,
+            name,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InputObjectDefinition WithDirectives(this InputObjectDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new InputObjectDefinition(
-                definition.Description,
-                definition.Name,
-                Directives.From(directives), 
-                definition.Fields,
-                definition.Location);
-        }
+    public static InputObjectDefinition WithDirectives(this InputObjectDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new InputObjectDefinition(
+            definition.Description,
+            definition.Name,
+            Directives.From(directives),
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InputObjectDefinition WithFields(this InputObjectDefinition definition,
-            IReadOnlyList<InputValueDefinition>? fields)
-        {
-            return new InputObjectDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Directives,
-                InputFieldsDefinition.From(fields),
-                definition.Location);
-        }
+    public static InputObjectDefinition WithFields(this InputObjectDefinition definition,
+        IReadOnlyList<InputValueDefinition>? fields)
+    {
+        return new InputObjectDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Directives,
+            InputFieldsDefinition.From(fields),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/InputValueDefinitionExtensions.cs b/src/graphql.language/Extensions/InputValueDefinitionExtensions.cs
index 05c4ac856..c27b3390b 100644
--- a/src/graphql.language/Extensions/InputValueDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/InputValueDefinitionExtensions.cs
@@ -2,54 +2,53 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class InputValueDefinitionExtensions
 {
-    public static class InputValueDefinitionExtensions
+    public static InputValueDefinition WithDescription(this InputValueDefinition definition,
+        in StringValue? description)
     {
-        public static InputValueDefinition WithDescription(this InputValueDefinition definition,
-            in StringValue? description)
-        {
-            return new InputValueDefinition(
-                description,
-                definition.Name,
-                definition.Type,
-                definition.DefaultValue,
-                definition.Directives,
-                definition.Location);
-        }
+        return new InputValueDefinition(
+            description,
+            definition.Name,
+            definition.Type,
+            definition.DefaultValue,
+            definition.Directives,
+            definition.Location);
+    }
 
-        public static InputValueDefinition WithName(this InputValueDefinition definition, in Name name)
-        {
-            return new InputValueDefinition(
-                definition.Description,
-                name,
-                definition.Type,
-                definition.DefaultValue,
-                definition.Directives,
-                definition.Location);
-        }
+    public static InputValueDefinition WithName(this InputValueDefinition definition, in Name name)
+    {
+        return new InputValueDefinition(
+            definition.Description,
+            name,
+            definition.Type,
+            definition.DefaultValue,
+            definition.Directives,
+            definition.Location);
+    }
 
-        public static InputValueDefinition WithType(this InputValueDefinition definition, TypeBase type)
-        {
-            return new InputValueDefinition(
-                definition.Description,
-                definition.Name,
-                type,
-                definition.DefaultValue,
-                definition.Directives,
-                definition.Location);
-        }
+    public static InputValueDefinition WithType(this InputValueDefinition definition, TypeBase type)
+    {
+        return new InputValueDefinition(
+            definition.Description,
+            definition.Name,
+            type,
+            definition.DefaultValue,
+            definition.Directives,
+            definition.Location);
+    }
 
-        public static InputValueDefinition WithDirectives(this InputValueDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new InputValueDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Type,
-                definition.DefaultValue,
-                Directives.From(directives),
-                definition.Location);
-        }
+    public static InputValueDefinition WithDirectives(this InputValueDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new InputValueDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Type,
+            definition.DefaultValue,
+            Directives.From(directives),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
index d87966d36..fadb30ee8 100644
--- a/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/InterfaceDefinitionExtensions.cs
@@ -4,89 +4,88 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class InterfaceDefinitionExtensions
 {
-    public static class InterfaceDefinitionExtensions
+    public static bool HasInterface(
+        this InterfaceDefinition definition,
+        Name interfaceName)
     {
-        public static bool HasInterface(
-            this InterfaceDefinition definition,
-            Name interfaceName)
-        {
-            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
-        }
+        return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
+    }
 
-        public static bool TryGetDirective(
-            this InterfaceDefinition definition,
-            Name directiveName,
-            [NotNullWhen(true)]out Directive? directive)
+    public static bool TryGetDirective(
+        this InterfaceDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
+    {
+        if (definition.Directives is null)
         {
-            if (definition.Directives is null)
-            {
-                directive = null;
-                return false;
-            }
-
-            return definition.Directives.TryGet(directiveName, out directive);
+            directive = null;
+            return false;
         }
 
-        public static InterfaceDefinition WithDescription(this InterfaceDefinition definition,
-            in StringValue? description)
-        {
-            return new InterfaceDefinition(
-                description,
-                definition.Name,
-                definition.Interfaces,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
 
-        public static InterfaceDefinition WithName(this InterfaceDefinition definition,
-            in Name name)
-        {
-            return new InterfaceDefinition(
-                definition.Description,
-                name,
-                definition.Interfaces,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+    public static InterfaceDefinition WithDescription(this InterfaceDefinition definition,
+        in StringValue? description)
+    {
+        return new InterfaceDefinition(
+            description,
+            definition.Name,
+            definition.Interfaces,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InterfaceDefinition WithInterfaces(this InterfaceDefinition definition,
-            IReadOnlyList<NamedType>? interfaces)
-        {
-            return new InterfaceDefinition(
-                definition.Description,
-                definition.Name,
-                ImplementsInterfaces.From(interfaces),
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+    public static InterfaceDefinition WithName(this InterfaceDefinition definition,
+        in Name name)
+    {
+        return new InterfaceDefinition(
+            definition.Description,
+            name,
+            definition.Interfaces,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InterfaceDefinition WithDirectives(this InterfaceDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new InterfaceDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Interfaces,
-                Directives.From(directives),
-                definition.Fields,
-                definition.Location);
-        }
+    public static InterfaceDefinition WithInterfaces(this InterfaceDefinition definition,
+        IReadOnlyList<NamedType>? interfaces)
+    {
+        return new InterfaceDefinition(
+            definition.Description,
+            definition.Name,
+            ImplementsInterfaces.From(interfaces),
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static InterfaceDefinition WithFields(this InterfaceDefinition definition,
-            IReadOnlyList<FieldDefinition>? fields)
-        {
-            return new InterfaceDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Interfaces,
-                definition.Directives,
-                FieldsDefinition.From(fields),
-                definition.Location);
-        }
+    public static InterfaceDefinition WithDirectives(this InterfaceDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new InterfaceDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Interfaces,
+            Directives.From(directives),
+            definition.Fields,
+            definition.Location);
+    }
+
+    public static InterfaceDefinition WithFields(this InterfaceDefinition definition,
+        IReadOnlyList<FieldDefinition>? fields)
+    {
+        return new InterfaceDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Interfaces,
+            definition.Directives,
+            FieldsDefinition.From(fields),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
index aba797ebe..e879230f7 100644
--- a/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/ObjectDefinitionExtensions.cs
@@ -4,115 +4,111 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class ObjectDefinitionExtensions
 {
-    public static class ObjectDefinitionExtensions
+    public static bool TryImplements(
+        this ObjectDefinition definition,
+        Name interfaceName,
+        [NotNullWhen(true)] out NamedType? namedType)
     {
-        public static bool TryImplements(
-            this ObjectDefinition definition,
-            Name interfaceName,
-            [NotNullWhen(true)]out NamedType? namedType)
+        if (definition.Interfaces is null)
         {
-            if (definition.Interfaces is null)
-            {
-                namedType = null;
-                return false;
-            }
-
-            return definition.Interfaces.TryGet(interfaceName, out namedType);
+            namedType = null;
+            return false;
         }
 
-        public static bool HasInterface(
-            this ObjectDefinition definition,
-            Name interfaceName)
-        {
-            return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
-        }
+        return definition.Interfaces.TryGet(interfaceName, out namedType);
+    }
 
-        public static bool TryGetDirective(
-            this ObjectDefinition definition,
-            Name directiveName,
-            [NotNullWhen(true)]out Directive? directive)
-        {
-            if (definition.Directives is null)
-            {
-                directive = null;
-                return false;
-            }
+    public static bool HasInterface(
+        this ObjectDefinition definition,
+        Name interfaceName)
+    {
+        return definition.Interfaces?.Any(i => i.Name == interfaceName) == true;
+    }
 
-            return definition.Directives.TryGet(directiveName, out directive);
+    public static bool TryGetDirective(
+        this ObjectDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
+    {
+        if (definition.Directives is null)
+        {
+            directive = null;
+            return false;
         }
 
-        public static bool HasDirective(
-            this ObjectDefinition definition,
-            Name directiveName)
-        {
-            if (definition.Directives is null)
-            {
-                return false;
-            }
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
 
-            return definition.Directives.TryGet(directiveName, out _);
-        }
+    public static bool HasDirective(
+        this ObjectDefinition definition,
+        Name directiveName)
+    {
+        if (definition.Directives is null) return false;
 
-        public static ObjectDefinition WithDescription(this ObjectDefinition definition, 
-            in StringValue? description)
-        {
-            return new ObjectDefinition(
-                description,
-                definition.Name,
-                definition.Interfaces,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+        return definition.Directives.TryGet(directiveName, out _);
+    }
 
-        public static ObjectDefinition WithName(this ObjectDefinition definition, 
-            in Name name)
-        {
-            return new ObjectDefinition(
-                definition.Description,
-                name,
-                definition.Interfaces,
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+    public static ObjectDefinition WithDescription(this ObjectDefinition definition,
+        in StringValue? description)
+    {
+        return new ObjectDefinition(
+            description,
+            definition.Name,
+            definition.Interfaces,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static ObjectDefinition WithInterfaces(this ObjectDefinition definition,
-            IReadOnlyList<NamedType>? interfaces)
-        {
-            return new ObjectDefinition(
-                definition.Description,
-                definition.Name,
-                ImplementsInterfaces.From(interfaces), 
-                definition.Directives,
-                definition.Fields,
-                definition.Location);
-        }
+    public static ObjectDefinition WithName(this ObjectDefinition definition,
+        in Name name)
+    {
+        return new ObjectDefinition(
+            definition.Description,
+            name,
+            definition.Interfaces,
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static ObjectDefinition WithDirectives(this ObjectDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new ObjectDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Interfaces,
-                Directives.From(directives), 
-                definition.Fields,
-                definition.Location);
-        }
+    public static ObjectDefinition WithInterfaces(this ObjectDefinition definition,
+        IReadOnlyList<NamedType>? interfaces)
+    {
+        return new ObjectDefinition(
+            definition.Description,
+            definition.Name,
+            ImplementsInterfaces.From(interfaces),
+            definition.Directives,
+            definition.Fields,
+            definition.Location);
+    }
 
-        public static ObjectDefinition WithFields(this ObjectDefinition definition,
-            IReadOnlyList<FieldDefinition>? fields)
-        {
-            return new ObjectDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Interfaces,
-                definition.Directives,
-                FieldsDefinition.From(fields),
-                definition.Location);
-        }
+    public static ObjectDefinition WithDirectives(this ObjectDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new ObjectDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Interfaces,
+            Directives.From(directives),
+            definition.Fields,
+            definition.Location);
+    }
+
+    public static ObjectDefinition WithFields(this ObjectDefinition definition,
+        IReadOnlyList<FieldDefinition>? fields)
+    {
+        return new ObjectDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Interfaces,
+            definition.Directives,
+            FieldsDefinition.From(fields),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ReadOnlyListExtensions.cs b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
index 45981026b..38c576721 100644
--- a/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
+++ b/src/graphql.language/Extensions/ReadOnlyListExtensions.cs
@@ -4,174 +4,159 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class ReadOnlyListExtensions
 {
-    public static class ReadOnlyListExtensions
+    public static IReadOnlyList<T>? Concat<T>(this IReadOnlyList<T>? left, IReadOnlyList<T>? right)
     {
-        public static IReadOnlyList<T>? Concat<T>(this IReadOnlyList<T>? left, IReadOnlyList<T>? right)
-        {
-            if (left is null && right is null)
-                return null;
+        if (left is null && right is null)
+            return null;
 
-            if (left is null != right is null)
-                return left ?? right;
+        if (left is null != right is null)
+            return left ?? right;
 
-            var result = left?.ToList() ?? new List<T>();
+        var result = left?.ToList() ?? new List<T>();
 
-            if (right is not null)
-            {
-                result.AddRange(right);
-            }
+        if (right is not null) result.AddRange(right);
 
-            return result;
-        }
+        return result;
+    }
 
-        public static Directives? Concat(this Directives? left, Directives? right)
-        {
-            var directives = Concat(left as IReadOnlyList<Directive>, right);
+    public static Directives? Concat(this Directives? left, Directives? right)
+    {
+        var directives = Concat(left as IReadOnlyList<Directive>, right);
 
-            if (directives is null)
-                return null;
+        if (directives is null)
+            return null;
 
-            return new Directives(directives, left?.Location ?? right?.Location);
-        }
+        return new Directives(directives, left?.Location ?? right?.Location);
+    }
 
-        public static IReadOnlyList<T>? Join<T, TKey>(
-            this IReadOnlyList<T>? left, 
-            IReadOnlyList<T>? right, 
-            Func<T, TKey> keySelector,
-            Func<T, T, T> resultSelector)
-        {
-            if (left is null && right is null)
-                return null;
+    public static IReadOnlyList<T>? Join<T, TKey>(
+        this IReadOnlyList<T>? left,
+        IReadOnlyList<T>? right,
+        Func<T, TKey> keySelector,
+        Func<T, T, T> resultSelector)
+    {
+        if (left is null && right is null)
+            return null;
 
-            if (left is null != right is null)
-                return left ?? right;
+        if (left is null != right is null)
+            return left ?? right;
 
-            var result = left?.ToList() ?? new List<T>();
+        var result = left?.ToList() ?? new List<T>();
 
-            if (right is not null)
-            {
-                return Joiner(
-                    result,
-                    right,
-                    keySelector,
-                    resultSelector).ToList();
-            }
+        if (right is not null)
+            return Joiner(
+                result,
+                right,
+                keySelector,
+                resultSelector).ToList();
 
-            return result;
+        return result;
 
-            IEnumerable<T> Joiner<T>(
-                IEnumerable<T> left,
-                IEnumerable<T> right,
-                Func<T, TKey> keySelector,
-                Func<T, T, T> conflictResolver)
-            {
-                var leftKeyed = left.ToDictionary(keySelector, item => item);
-                var rightKeyed = right.ToDictionary(keySelector, item => item);
+        IEnumerable<T> Joiner<T>(
+            IEnumerable<T> left,
+            IEnumerable<T> right,
+            Func<T, TKey> keySelector,
+            Func<T, T, T> conflictResolver)
+        {
+            var leftKeyed = left.ToDictionary(keySelector, item => item);
+            var rightKeyed = right.ToDictionary(keySelector, item => item);
 
-                foreach (var (leftKey, leftItem) in leftKeyed)
+            foreach (var (leftKey, leftItem) in leftKeyed)
+            {
+                if (rightKeyed.TryGetValue(leftKey, out var rightItem))
                 {
-                    if (rightKeyed.TryGetValue(leftKey, out var rightItem))
-                    {
-                        var resolvedItem = conflictResolver(leftItem, rightItem);
-                        yield return resolvedItem;
-                        rightKeyed.Remove(leftKey);
-                        continue;
-                    }
-
-                    yield return leftItem;
+                    var resolvedItem = conflictResolver(leftItem, rightItem);
+                    yield return resolvedItem;
+                    rightKeyed.Remove(leftKey);
+                    continue;
                 }
 
-                // non conflicting right items
-                foreach (var (_, rightItem) in rightKeyed)
-                {
-                    yield return rightItem;
-                }
+                yield return leftItem;
             }
-        }
 
-        public static IReadOnlyList<NamedType>? Join(
-            this IReadOnlyList<NamedType>? left,
-            IReadOnlyList<NamedType>? right)
-        {
-            return Join(
-                left,
-                right,
-                namedType => namedType.Name.Value,
-                (leftItem, _) => leftItem);
+            // non conflicting right items
+            foreach (var (_, rightItem) in rightKeyed) yield return rightItem;
         }
+    }
 
-        public static FieldsDefinition? Join(
-            this FieldsDefinition? left,
-            FieldsDefinition? right)
-        {
-            if (left is null && right is null)
-                return null;
+    public static IReadOnlyList<NamedType>? Join(
+        this IReadOnlyList<NamedType>? left,
+        IReadOnlyList<NamedType>? right)
+    {
+        return Join(
+            left,
+            right,
+            namedType => namedType.Name.Value,
+            (leftItem, _) => leftItem);
+    }
 
-            if (left is null != right is null)
-                return left ?? right;
+    public static FieldsDefinition? Join(
+        this FieldsDefinition? left,
+        FieldsDefinition? right)
+    {
+        if (left is null && right is null)
+            return null;
 
-            var fields = Join(
-                left,
-                right,
-                field =>
-                {
-                    return field.Name.Value;
-                },
-                (leftField, _) =>
-                {
-                    return leftField;
-                });
+        if (left is null != right is null)
+            return left ?? right;
 
-            if (fields is null)
-                return null;
+        var fields = Join(
+            left,
+            right,
+            field => { return field.Name.Value; },
+            (leftField, _) => { return leftField; });
 
-            return new FieldsDefinition(fields, left?.Location ?? right?.Location);
-        }
+        if (fields is null)
+            return null;
 
-        public static InputFieldsDefinition? Join(
-            this InputFieldsDefinition? left,
-            InputFieldsDefinition? right)
-        {
-            if (left is null && right is null)
-                return null;
+        return new FieldsDefinition(fields, left?.Location ?? right?.Location);
+    }
 
-            if (left is null != right is null)
-                return left ?? right;
+    public static InputFieldsDefinition? Join(
+        this InputFieldsDefinition? left,
+        InputFieldsDefinition? right)
+    {
+        if (left is null && right is null)
+            return null;
 
-            var fields = Join(
-                left,
-                right,
-                field => field.Name.Value,
-                (leftField, _) => leftField);
+        if (left is null != right is null)
+            return left ?? right;
 
-            if (fields is null)
-                return null;
+        var fields = Join(
+            left,
+            right,
+            field => field.Name.Value,
+            (leftField, _) => leftField);
 
-            return new InputFieldsDefinition(fields, left?.Location ?? right?.Location);
-        }
+        if (fields is null)
+            return null;
 
-        public static EnumValuesDefinition? Join(
-            this EnumValuesDefinition? left,
-            EnumValuesDefinition? right)
-        {
-            if (left is null && right is null)
-                return null;
+        return new InputFieldsDefinition(fields, left?.Location ?? right?.Location);
+    }
 
-            if (left is null != right is null)
-                return left ?? right;
+    public static EnumValuesDefinition? Join(
+        this EnumValuesDefinition? left,
+        EnumValuesDefinition? right)
+    {
+        if (left is null && right is null)
+            return null;
 
-            var values = Join(
-                left,
-                right,
-                value => value.Value.Name.Value,
-                (leftValue, _) => leftValue);
+        if (left is null != right is null)
+            return left ?? right;
 
-            if (values is null)
-                return null;
+        var values = Join(
+            left,
+            right,
+            value => value.Value.Name.Value,
+            (leftValue, _) => leftValue);
 
-            return new EnumValuesDefinition(values, left?.Location ?? right?.Location);
-        }
+        if (values is null)
+            return null;
+
+        return new EnumValuesDefinition(values, left?.Location ?? right?.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/ScalarDefinitionExtensions.cs b/src/graphql.language/Extensions/ScalarDefinitionExtensions.cs
index abf53159b..60147eb44 100644
--- a/src/graphql.language/Extensions/ScalarDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/ScalarDefinitionExtensions.cs
@@ -2,37 +2,37 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class ScalarDefinitionExtensions
 {
-    public static class ScalarDefinitionExtensions
+    public static ScalarDefinition WithDescription(this ScalarDefinition definition,
+        in StringValue? description)
+    {
+        return new ScalarDefinition(
+            description,
+            definition.Name,
+            definition.Directives,
+            definition.Location);
+    }
+
+    public static ScalarDefinition WithName(this ScalarDefinition definition,
+        in Name name)
     {
-        public static ScalarDefinition WithDescription(this ScalarDefinition definition, 
-            in StringValue? description)
-        {
-            return new ScalarDefinition(
-                description,
-                definition.Name,
-                definition.Directives,
-                definition.Location);
-        }
+        return new ScalarDefinition(
+            definition.Description,
+            name,
+            definition.Directives,
+            definition.Location);
+    }
 
-        public static ScalarDefinition WithName(this ScalarDefinition definition, 
-            in Name name)
-        {
-            return new ScalarDefinition(
-                definition.Description,
-                name,
-                definition.Directives,
-                definition.Location);
-        }
-        public static ScalarDefinition WithDirectives(this ScalarDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new ScalarDefinition(
-                definition.Description,
-                definition.Name,
-                Directives.From(directives),
-                definition.Location);
-        }
+    public static ScalarDefinition WithDirectives(this ScalarDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new ScalarDefinition(
+            definition.Description,
+            definition.Name,
+            Directives.From(directives),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/SchemaExtensionExtensions.cs b/src/graphql.language/Extensions/SchemaExtensionExtensions.cs
index fe25ce52b..7b11ae4cc 100644
--- a/src/graphql.language/Extensions/SchemaExtensionExtensions.cs
+++ b/src/graphql.language/Extensions/SchemaExtensionExtensions.cs
@@ -1,38 +1,37 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class SchemaExtensionExtensions
 {
-    public static class SchemaExtensionExtensions
+    public static SchemaExtension WithDescription(this SchemaExtension definition,
+        in StringValue? description)
+    {
+        return new SchemaExtension(
+            description,
+            definition.Directives,
+            definition.Operations,
+            definition.Location);
+    }
+
+    public static SchemaExtension WithDirectives(this SchemaExtension definition,
+        Directives? directives)
     {
-        public static SchemaExtension WithDescription(this SchemaExtension definition, 
-            in StringValue? description)
-        {
-            return new SchemaExtension(
-                description,
-                definition.Directives,
-                definition.Operations,
-                definition.Location);
-        }
-        public static SchemaExtension WithDirectives(this SchemaExtension definition,
-            Directives? directives)
-        {
-            return new SchemaExtension(
-                definition.Description,
-                directives,
-                definition.Operations,
-                definition.Location);
-        }
+        return new SchemaExtension(
+            definition.Description,
+            directives,
+            definition.Operations,
+            definition.Location);
+    }
 
-        public static SchemaExtension WithOperations(this SchemaExtension definition,
-            RootOperationTypeDefinitions? operations)
-        {
-            return new SchemaExtension(
-                definition.Description,
-                definition.Directives,
-                operations,
-                definition.Location);
-        }
+    public static SchemaExtension WithOperations(this SchemaExtension definition,
+        RootOperationTypeDefinitions? operations)
+    {
+        return new SchemaExtension(
+            definition.Description,
+            definition.Directives,
+            operations,
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/TypeDefinitionExtensions.cs b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
index 82c78b4aa..8bdd2291e 100644
--- a/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/TypeDefinitionExtensions.cs
@@ -3,215 +3,211 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class TypeDefinitionExtensions
 {
-    public static class TypeDefinitionExtensions
+    public static bool HasDirective(
+        this TypeDefinition definition,
+        Name directiveName)
     {
-        public static bool HasDirective(
-            this TypeDefinition definition,
-            Name directiveName)
-        {
-            if (definition.Directives is null)
-            {
-                return false;
-            }
+        if (definition.Directives is null) return false;
 
-            return definition.Directives.TryGet(directiveName, out _);
-        }
+        return definition.Directives.TryGet(directiveName, out _);
+    }
 
-        public static bool TryGetDirective(
-            this TypeDefinition definition,
-            Name directiveName,
-            [NotNullWhen(true)] out Directive? directive)
+    public static bool TryGetDirective(
+        this TypeDefinition definition,
+        Name directiveName,
+        [NotNullWhen(true)] out Directive? directive)
+    {
+        if (definition.Directives is null)
         {
-            if (definition.Directives is null)
-            {
-                directive = null;
-                return false;
-            }
-
-            return definition.Directives.TryGet(directiveName, out directive);
+            directive = null;
+            return false;
         }
 
-        public static TypeDefinition Extend(
-            this TypeDefinition typeDefinition,
-            params TypeExtension[] typeExtensions)
+        return definition.Directives.TryGet(directiveName, out directive);
+    }
+
+    public static TypeDefinition Extend(
+        this TypeDefinition typeDefinition,
+        params TypeExtension[] typeExtensions)
+    {
+        return typeDefinition switch
         {
-            return typeDefinition switch
-            {
-                EnumDefinition enumDefinition => Extend(enumDefinition, typeExtensions),
-                InputObjectDefinition inputObjectDefinition => Extend(inputObjectDefinition, typeExtensions),
-                InterfaceDefinition interfaceDefinition => Extend(interfaceDefinition, typeExtensions),
-                ObjectDefinition objectDefinition => Extend(objectDefinition, typeExtensions),
-                ScalarDefinition scalarDefinition => Extend(scalarDefinition, typeExtensions),
-                UnionDefinition unionDefinition => Extend(unionDefinition, typeExtensions),
-                _ => throw new ArgumentOutOfRangeException(nameof(typeDefinition))
-            };
-        }
+            EnumDefinition enumDefinition => Extend(enumDefinition, typeExtensions),
+            InputObjectDefinition inputObjectDefinition => Extend(inputObjectDefinition, typeExtensions),
+            InterfaceDefinition interfaceDefinition => Extend(interfaceDefinition, typeExtensions),
+            ObjectDefinition objectDefinition => Extend(objectDefinition, typeExtensions),
+            ScalarDefinition scalarDefinition => Extend(scalarDefinition, typeExtensions),
+            UnionDefinition unionDefinition => Extend(unionDefinition, typeExtensions),
+            _ => throw new ArgumentOutOfRangeException(nameof(typeDefinition))
+        };
+    }
 
-        public static UnionDefinition Extend(
-            this UnionDefinition unionDefinition,
-            params TypeExtension[] typeExtensions)
+    public static UnionDefinition Extend(
+        this UnionDefinition unionDefinition,
+        params TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
         {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(unionDefinition, extension);
-
-                var extensionDefinition = (UnionDefinition) extension.Definition;
-                unionDefinition = unionDefinition
-                    .WithDirectives(
-                        unionDefinition.Directives
-                            .Concat(extensionDefinition.Directives)
-                    )
-                    .WithMembers(
-                        unionDefinition.Members
-                            .Join(extensionDefinition.Members)
-                    );
-            }
-
-            return unionDefinition;
+            EnsureExtendedType(unionDefinition, extension);
+
+            var extensionDefinition = (UnionDefinition)extension.Definition;
+            unionDefinition = unionDefinition
+                .WithDirectives(
+                    unionDefinition.Directives
+                        .Concat(extensionDefinition.Directives)
+                )
+                .WithMembers(
+                    unionDefinition.Members
+                        .Join(extensionDefinition.Members)
+                );
         }
 
-        public static ScalarDefinition Extend(
-            this ScalarDefinition scalarDefinition,
-            TypeExtension[] typeExtensions)
+        return unionDefinition;
+    }
+
+    public static ScalarDefinition Extend(
+        this ScalarDefinition scalarDefinition,
+        TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
         {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(scalarDefinition, extension);
-
-                var extensionDefinition = (ScalarDefinition) extension.Definition;
-                scalarDefinition = scalarDefinition
-                    .WithDirectives(
-                        scalarDefinition.Directives
-                            .Concat(extensionDefinition.Directives)
-                    );
-            }
-
-            return scalarDefinition;
+            EnsureExtendedType(scalarDefinition, extension);
+
+            var extensionDefinition = (ScalarDefinition)extension.Definition;
+            scalarDefinition = scalarDefinition
+                .WithDirectives(
+                    scalarDefinition.Directives
+                        .Concat(extensionDefinition.Directives)
+                );
         }
 
-        public static ObjectDefinition Extend(
-            this ObjectDefinition objectDefinition,
-            TypeExtension[] typeExtensions)
-        {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(objectDefinition, extension);
+        return scalarDefinition;
+    }
 
-                var extensionDefinition = (ObjectDefinition) extension.Definition;
+    public static ObjectDefinition Extend(
+        this ObjectDefinition objectDefinition,
+        TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
+        {
+            EnsureExtendedType(objectDefinition, extension);
 
-                var extendedDirectives = objectDefinition.Directives
-                    .Concat(extensionDefinition.Directives);
+            var extensionDefinition = (ObjectDefinition)extension.Definition;
 
-                var extendedFields = objectDefinition.Fields
-                    .Join(extensionDefinition.Fields);
+            var extendedDirectives = objectDefinition.Directives
+                .Concat(extensionDefinition.Directives);
 
-                var extendedInterfaces = objectDefinition.Interfaces
-                    .Join(extensionDefinition.Interfaces);
+            var extendedFields = objectDefinition.Fields
+                .Join(extensionDefinition.Fields);
 
-                objectDefinition = new ObjectDefinition(
-                    objectDefinition.Description,
-                    objectDefinition.Name,
-                    ImplementsInterfaces.From(extendedInterfaces),
-                    extendedDirectives,
-                    extendedFields,
-                    objectDefinition.Location);
-            }
+            var extendedInterfaces = objectDefinition.Interfaces
+                .Join(extensionDefinition.Interfaces);
 
-            return objectDefinition;
+            objectDefinition = new ObjectDefinition(
+                objectDefinition.Description,
+                objectDefinition.Name,
+                ImplementsInterfaces.From(extendedInterfaces),
+                extendedDirectives,
+                extendedFields,
+                objectDefinition.Location);
         }
 
-        public static InterfaceDefinition Extend(
-            this InterfaceDefinition interfaceDefinition,
-            TypeExtension[] typeExtensions)
-        {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(interfaceDefinition, extension);
+        return objectDefinition;
+    }
 
-                var extensionDefinition = (InterfaceDefinition) extension.Definition;
+    public static InterfaceDefinition Extend(
+        this InterfaceDefinition interfaceDefinition,
+        TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
+        {
+            EnsureExtendedType(interfaceDefinition, extension);
 
-                var extendedDirectives = interfaceDefinition.Directives
-                    .Concat(extensionDefinition.Directives);
+            var extensionDefinition = (InterfaceDefinition)extension.Definition;
 
-                var extendedFields = interfaceDefinition.Fields
-                    .Join(extensionDefinition.Fields);
+            var extendedDirectives = interfaceDefinition.Directives
+                .Concat(extensionDefinition.Directives);
 
-                var extendedInterfaces = interfaceDefinition.Interfaces
-                    .Join(extensionDefinition.Interfaces);
+            var extendedFields = interfaceDefinition.Fields
+                .Join(extensionDefinition.Fields);
 
-                interfaceDefinition = new InterfaceDefinition(
-                    interfaceDefinition.Description,
-                    interfaceDefinition.Name,
-                    ImplementsInterfaces.From(extendedInterfaces),
-                    extendedDirectives,
-                    extendedFields,
-                    interfaceDefinition.Location);
-            }
+            var extendedInterfaces = interfaceDefinition.Interfaces
+                .Join(extensionDefinition.Interfaces);
 
-            return interfaceDefinition;
+            interfaceDefinition = new InterfaceDefinition(
+                interfaceDefinition.Description,
+                interfaceDefinition.Name,
+                ImplementsInterfaces.From(extendedInterfaces),
+                extendedDirectives,
+                extendedFields,
+                interfaceDefinition.Location);
         }
 
-        public static InputObjectDefinition Extend(
-            this InputObjectDefinition inputObjectDefinition,
-            TypeExtension[] typeExtensions)
-        {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(inputObjectDefinition, extension);
+        return interfaceDefinition;
+    }
 
-                var extensionDefinition = (InputObjectDefinition) extension.Definition;
+    public static InputObjectDefinition Extend(
+        this InputObjectDefinition inputObjectDefinition,
+        TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
+        {
+            EnsureExtendedType(inputObjectDefinition, extension);
 
-                var extendedDirectives = inputObjectDefinition.Directives
-                    .Concat(extensionDefinition.Directives);
+            var extensionDefinition = (InputObjectDefinition)extension.Definition;
 
-                var extendedFields = inputObjectDefinition.Fields
-                    .Join(extensionDefinition.Fields);
+            var extendedDirectives = inputObjectDefinition.Directives
+                .Concat(extensionDefinition.Directives);
 
-                inputObjectDefinition = new InputObjectDefinition(
-                    inputObjectDefinition.Description,
-                    inputObjectDefinition.Name,
-                    extendedDirectives,
-                    extendedFields,
-                    inputObjectDefinition.Location);
-            }
+            var extendedFields = inputObjectDefinition.Fields
+                .Join(extensionDefinition.Fields);
 
-            return inputObjectDefinition;
+            inputObjectDefinition = new InputObjectDefinition(
+                inputObjectDefinition.Description,
+                inputObjectDefinition.Name,
+                extendedDirectives,
+                extendedFields,
+                inputObjectDefinition.Location);
         }
 
-        public static EnumDefinition Extend(
-            this EnumDefinition enumDefinition,
-            params TypeExtension[] typeExtensions)
-        {
-            foreach (var extension in typeExtensions)
-            {
-                EnsureExtendedType(enumDefinition, extension);
+        return inputObjectDefinition;
+    }
 
-                var extensionDefinition = (EnumDefinition) extension.Definition;
+    public static EnumDefinition Extend(
+        this EnumDefinition enumDefinition,
+        params TypeExtension[] typeExtensions)
+    {
+        foreach (var extension in typeExtensions)
+        {
+            EnsureExtendedType(enumDefinition, extension);
 
-                var extendedDirectives = enumDefinition.Directives
-                    .Concat(extensionDefinition.Directives);
+            var extensionDefinition = (EnumDefinition)extension.Definition;
 
-                var extendedValues = enumDefinition.Values
-                    .Join(extensionDefinition.Values);
+            var extendedDirectives = enumDefinition.Directives
+                .Concat(extensionDefinition.Directives);
 
-                enumDefinition = new EnumDefinition(
-                    enumDefinition.Description,
-                    enumDefinition.Name,
-                    extendedDirectives,
-                    extendedValues,
-                    enumDefinition.Location);
-            }
+            var extendedValues = enumDefinition.Values
+                .Join(extensionDefinition.Values);
 
-            return enumDefinition;
+            enumDefinition = new EnumDefinition(
+                enumDefinition.Description,
+                enumDefinition.Name,
+                extendedDirectives,
+                extendedValues,
+                enumDefinition.Location);
         }
 
-        private static void EnsureExtendedType(TypeDefinition typeDefinition, TypeExtension typeExtension)
-        {
-            if (typeDefinition.Kind != typeExtension.ExtendedKind)
-                throw new InvalidOperationException(
-                    $"Invalid type extension '{typeExtension.ExtendedKind}' for type '{typeDefinition.Kind}'.");
-        }
+        return enumDefinition;
+    }
+
+    private static void EnsureExtendedType(TypeDefinition typeDefinition, TypeExtension typeExtension)
+    {
+        if (typeDefinition.Kind != typeExtension.ExtendedKind)
+            throw new InvalidOperationException(
+                $"Invalid type extension '{typeExtension.ExtendedKind}' for type '{typeDefinition.Kind}'.");
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs b/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
index fa501611f..ee2205413 100644
--- a/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
+++ b/src/graphql.language/Extensions/TypeSystemDocumentExtensions.cs
@@ -39,7 +39,7 @@ public static TypeSystemDocument WithMerged(this TypeSystemDocument left, TypeSy
     }
 
     public static TypeSystemDocument WithImports(
-        this TypeSystemDocument document, 
+        this TypeSystemDocument document,
         IReadOnlyList<Import>? definitions)
     {
         return new TypeSystemDocument(
diff --git a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
index c633a10ae..c07dc3187 100644
--- a/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
+++ b/src/graphql.language/Extensions/UnionDefinitionExtensions.cs
@@ -3,59 +3,58 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class UnionDefinitionExtensions
 {
-    public static class UnionDefinitionExtensions
+    public static bool HasMember(
+        this UnionDefinition definition,
+        Name name)
     {
-        public static bool HasMember(
-            this UnionDefinition definition,
-            Name name)
-        {
-            return definition.Members?.Any(m => m.Name == name) == true;
-        }
+        return definition.Members?.Any(m => m.Name == name) == true;
+    }
 
-        public static UnionDefinition WithDescription(this UnionDefinition definition,
-            in StringValue? description)
-        {
-            return new UnionDefinition(
-                description,
-                definition.Name,
-                definition.Directives,
-                definition.Members,
-                definition.Location);
-        }
+    public static UnionDefinition WithDescription(this UnionDefinition definition,
+        in StringValue? description)
+    {
+        return new UnionDefinition(
+            description,
+            definition.Name,
+            definition.Directives,
+            definition.Members,
+            definition.Location);
+    }
 
-        public static UnionDefinition WithName(this UnionDefinition definition,
-            in Name name)
-        {
-            return new UnionDefinition(
-                definition.Description,
-                name,
-                definition.Directives,
-                definition.Members,
-                definition.Location);
-        }
+    public static UnionDefinition WithName(this UnionDefinition definition,
+        in Name name)
+    {
+        return new UnionDefinition(
+            definition.Description,
+            name,
+            definition.Directives,
+            definition.Members,
+            definition.Location);
+    }
 
-        public static UnionDefinition WithDirectives(this UnionDefinition definition,
-            IReadOnlyList<Directive>? directives)
-        {
-            return new UnionDefinition(
-                definition.Description,
-                definition.Name,
-                Directives.From(directives),
-                definition.Members,
-                definition.Location);
-        }
+    public static UnionDefinition WithDirectives(this UnionDefinition definition,
+        IReadOnlyList<Directive>? directives)
+    {
+        return new UnionDefinition(
+            definition.Description,
+            definition.Name,
+            Directives.From(directives),
+            definition.Members,
+            definition.Location);
+    }
 
-        public static UnionDefinition WithMembers(this UnionDefinition definition,
-            IReadOnlyList<NamedType>? members)
-        {
-            return new UnionDefinition(
-                definition.Description,
-                definition.Name,
-                definition.Directives,
-                UnionMemberTypes.From(members),
-                definition.Location);
-        }
+    public static UnionDefinition WithMembers(this UnionDefinition definition,
+        IReadOnlyList<NamedType>? members)
+    {
+        return new UnionDefinition(
+            definition.Description,
+            definition.Name,
+            definition.Directives,
+            UnionMemberTypes.From(members),
+            definition.Location);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/IReadOnlyDocumentVisitor.cs b/src/graphql.language/IReadOnlyDocumentVisitor.cs
index 2904daf7b..0199638d6 100644
--- a/src/graphql.language/IReadOnlyDocumentVisitor.cs
+++ b/src/graphql.language/IReadOnlyDocumentVisitor.cs
@@ -1,10 +1,9 @@
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public interface IReadOnlyDocumentVisitor<TContext>
 {
-    public interface IReadOnlyDocumentVisitor<TContext>
-    {
-        void EnterNode(TContext context, INode node);
-        void ExitNode(TContext context, INode node);
-    }
+    void EnterNode(TContext context, INode node);
+    void ExitNode(TContext context, INode node);
 }
\ No newline at end of file
diff --git a/src/graphql.language/Internal/BlockStringValueReader.cs b/src/graphql.language/Internal/BlockStringValueReader.cs
index 05f062859..cd6fbef07 100644
--- a/src/graphql.language/Internal/BlockStringValueReader.cs
+++ b/src/graphql.language/Internal/BlockStringValueReader.cs
@@ -1,114 +1,113 @@
 using System;
 
-namespace Tanka.GraphQL.Language.Internal
+namespace Tanka.GraphQL.Language.Internal;
+
+internal readonly ref struct BlockStringValueReader
 {
-    internal readonly ref struct BlockStringValueReader
-    {
-        private readonly ReadOnlySpan<byte> _rawValue;
+    private readonly ReadOnlySpan<byte> _rawValue;
 
-        public BlockStringValueReader(in ReadOnlySpan<byte> value)
-        {
-            _rawValue = value;
-        }
+    public BlockStringValueReader(in ReadOnlySpan<byte> value)
+    {
+        _rawValue = value;
+    }
 
-        public ReadOnlySpan<byte> Read()
-        {
-            var commonIndent = CommonIndent(in _rawValue);
-            using var trimWriter = new BufferWriter(_rawValue.Length);
-            var lineReader = new LineReader(_rawValue);
+    public ReadOnlySpan<byte> Read()
+    {
+        var commonIndent = CommonIndent(in _rawValue);
+        using var trimWriter = new BufferWriter(_rawValue.Length);
+        var lineReader = new LineReader(_rawValue);
 
-            if (!lineReader.TryReadLine(out var firstLine))
-                return ReadOnlySpan<byte>.Empty;
+        if (!lineReader.TryReadLine(out var firstLine))
+            return ReadOnlySpan<byte>.Empty;
 
-            // trim
-            trimWriter.Write(firstLine);
-            if (commonIndent != null)
-                while (lineReader.TryReadLine(out var line))
+        // trim
+        trimWriter.Write(firstLine);
+        if (commonIndent != null)
+            while (lineReader.TryReadLine(out var line))
+            {
+                trimWriter.Write(Constants.NewLineMemory.Span);
+                if (!line.IsEmpty && line.Length >= commonIndent.Value)
                 {
-                    trimWriter.Write(Constants.NewLineMemory.Span);
-                    if (!line.IsEmpty && line.Length >= commonIndent.Value)
-                    {
-                        var trimmedLine = line.Slice(commonIndent.Value);
-                        trimWriter.Write(trimmedLine);
-                    }
+                    var trimmedLine = line.Slice(commonIndent.Value);
+                    trimWriter.Write(trimmedLine);
                 }
+            }
 
-            var trimmedValue = trimWriter.WrittenSpan;
-
-            //todo: check if Trim is better
-            var leadingWhiteSpace = LeadingWhiteSpace(trimmedValue);
-            var trailingWhiteSpace = TrailingWhitespace(trimmedValue);
-            var finalValue = trimmedValue
-                .Slice(0, trimmedValue.Length - trailingWhiteSpace)
-                .Slice(leadingWhiteSpace);
+        var trimmedValue = trimWriter.WrittenSpan;
 
-            return finalValue;
-        }
+        //todo: check if Trim is better
+        var leadingWhiteSpace = LeadingWhiteSpace(trimmedValue);
+        var trailingWhiteSpace = TrailingWhitespace(trimmedValue);
+        var finalValue = trimmedValue
+            .Slice(0, trimmedValue.Length - trailingWhiteSpace)
+            .Slice(leadingWhiteSpace);
 
-        private int? CommonIndent(in ReadOnlySpan<byte> span)
-        {
-            int? commonIndent = null;
-            var lineReader = new LineReader(in span);
+        return finalValue;
+    }
 
-            if (!lineReader.TryReadLine(out _)) throw new Exception("Could not read line starting");
+    private int? CommonIndent(in ReadOnlySpan<byte> span)
+    {
+        int? commonIndent = null;
+        var lineReader = new LineReader(in span);
 
-            while (lineReader.TryReadLine(out var line))
-            {
-                var length = line.Length;
-                var indent = LeadingWhiteSpace(line);
+        if (!lineReader.TryReadLine(out _)) throw new Exception("Could not read line starting");
 
-                if (indent < length)
-                    if (commonIndent == null || indent < commonIndent)
-                        commonIndent = indent;
-            }
+        while (lineReader.TryReadLine(out var line))
+        {
+            var length = line.Length;
+            var indent = LeadingWhiteSpace(line);
 
-            return commonIndent;
+            if (indent < length)
+                if (commonIndent == null || indent < commonIndent)
+                    commonIndent = indent;
         }
 
-        private int LeadingWhiteSpace(in ReadOnlySpan<byte> line)
-        {
-            if (line.IsEmpty)
-                return 0;
+        return commonIndent;
+    }
 
-            var position = 0;
-            while (position < line.Length)
-            {
-                if (!IsWhiteSpace(line[position])) break;
-                position++;
-            }
+    private int LeadingWhiteSpace(in ReadOnlySpan<byte> line)
+    {
+        if (line.IsEmpty)
+            return 0;
 
-            return position;
+        var position = 0;
+        while (position < line.Length)
+        {
+            if (!IsWhiteSpace(line[position])) break;
+            position++;
         }
 
-        private int TrailingWhitespace(in ReadOnlySpan<byte> line)
-        {
-            if (line.IsEmpty)
-                return 0;
+        return position;
+    }
 
-            var position = line.Length - 1;
-            var count = 0;
-            while (position > 0)
-            {
-                if (!IsWhiteSpace(line[position]))
-                    break;
+    private int TrailingWhitespace(in ReadOnlySpan<byte> line)
+    {
+        if (line.IsEmpty)
+            return 0;
 
-                position--;
-                count++;
-            }
+        var position = line.Length - 1;
+        var count = 0;
+        while (position > 0)
+        {
+            if (!IsWhiteSpace(line[position]))
+                break;
 
-            return count;
+            position--;
+            count++;
         }
 
-        private bool IsWhiteSpace(in byte code)
+        return count;
+    }
+
+    private bool IsWhiteSpace(in byte code)
+    {
+        return code switch
         {
-            return code switch
-            {
-                Constants.Tab => true,
-                Constants.Space => true,
-                Constants.Return => true,
-                Constants.NewLine => true,
-                _ => false
-            };
-        }
+            Constants.Tab => true,
+            Constants.Space => true,
+            Constants.Return => true,
+            Constants.NewLine => true,
+            _ => false
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Internal/BufferWriter.cs b/src/graphql.language/Internal/BufferWriter.cs
index 325e134cb..2d2555dd1 100644
--- a/src/graphql.language/Internal/BufferWriter.cs
+++ b/src/graphql.language/Internal/BufferWriter.cs
@@ -1,52 +1,51 @@
 using System;
 using System.Buffers;
 
-namespace Tanka.GraphQL.Language.Internal
+namespace Tanka.GraphQL.Language.Internal;
+
+public class BufferWriter : IDisposable
 {
-    public class BufferWriter: IDisposable
+    private readonly byte[] _buffer;
+    private readonly int _length;
+    private int _index;
+
+    public BufferWriter(int length)
     {
-        private readonly byte[] _buffer;
-        private int _index;
-        private readonly int _length;
-        
-        public BufferWriter(int length)
-        {
-            _buffer = ArrayPool<byte>.Shared.Rent(length);
-            _length = length;
-            _index = 0;
-        }
+        _buffer = ArrayPool<byte>.Shared.Rent(length);
+        _length = length;
+        _index = 0;
+    }
 
-        public void Write(in ReadOnlySpan<byte> span)
+    public Span<byte> FreeSpan
+    {
+        get
         {
-            if (span.IsEmpty)
-                return;
-
-            var destination = FreeSpan.Slice(0, span.Length);
-            span.CopyTo(destination);
-            _index += span.Length;
+            Span<byte> span = _buffer;
+            return span.Slice(_index, _length - WrittenSpan.Length);
         }
+    }
 
-        public Span<byte> FreeSpan
+    public ReadOnlySpan<byte> WrittenSpan
+    {
+        get
         {
-            get 
-            { 
-                Span<byte> span = _buffer;
-                return span.Slice(_index, _length - WrittenSpan.Length);
-            }
+            ReadOnlySpan<byte> span = _buffer;
+            return span.Slice(0, _index);
         }
+    }
 
-        public ReadOnlySpan<byte> WrittenSpan
-        {
-            get
-            {
-                ReadOnlySpan<byte> span = _buffer;
-                return span.Slice(0, _index);
-            }
-        }
+    public void Dispose()
+    {
+        ArrayPool<byte>.Shared.Return(_buffer);
+    }
 
-        public void Dispose()
-        {
-            ArrayPool<byte>.Shared.Return(_buffer);
-        }
+    public void Write(in ReadOnlySpan<byte> span)
+    {
+        if (span.IsEmpty)
+            return;
+
+        var destination = FreeSpan.Slice(0, span.Length);
+        span.CopyTo(destination);
+        _index += span.Length;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Internal/LineReader.cs b/src/graphql.language/Internal/LineReader.cs
index 971ad9c29..d4d9eaa76 100644
--- a/src/graphql.language/Internal/LineReader.cs
+++ b/src/graphql.language/Internal/LineReader.cs
@@ -1,47 +1,46 @@
 using System;
 
-namespace Tanka.GraphQL.Language.Internal
+namespace Tanka.GraphQL.Language.Internal;
+
+internal ref struct LineReader
 {
-    internal ref struct LineReader
-    {
-        private readonly ReadOnlySpan<byte> _span;
+    private readonly ReadOnlySpan<byte> _span;
+
+    private int Position { get; set; }
 
-        private int Position { get; set; }
+    public LineReader(in ReadOnlySpan<byte> span)
+    {
+        _span = span;
+        Position = -1;
+    }
 
-        public LineReader(in ReadOnlySpan<byte> span)
+    public bool TryReadLine(out ReadOnlySpan<byte> line)
+    {
+        Position++;
+        if (Position >= _span.Length)
         {
-            _span = span;
-            Position = -1;
+            line = default;
+            Position = _span.Length - 1;
+            return false;
         }
 
-        public bool TryReadLine(out ReadOnlySpan<byte> line)
+        var unreadSpan = _span.Slice(Position);
+        var newLineOrReturnIndex = unreadSpan
+            .IndexOfAny(Constants.Return, Constants.NewLine);
+
+        // no line found
+        if (newLineOrReturnIndex == -1)
         {
-            Position++;
-            if (Position >= _span.Length)
-            {
-                line = default;
-                Position = _span.Length - 1;
-                return false;
-            }
-
-            var unreadSpan = _span.Slice(Position);
-            var newLineOrReturnIndex = unreadSpan
-                .IndexOfAny(Constants.Return, Constants.NewLine);
-
-            // no line found
-            if (newLineOrReturnIndex == -1)
-            {
-                line = unreadSpan;
-                Position = _span.Length - 1;
-                return true;
-            }
-
-            Position += newLineOrReturnIndex;
-            // skip \r
-            if (unreadSpan[newLineOrReturnIndex] == Constants.Return) Position++;
-
-            line = unreadSpan.Slice(0, newLineOrReturnIndex);
+            line = unreadSpan;
+            Position = _span.Length - 1;
             return true;
         }
+
+        Position += newLineOrReturnIndex;
+        // skip \r
+        if (unreadSpan[newLineOrReturnIndex] == Constants.Return) Position++;
+
+        line = unreadSpan.Slice(0, newLineOrReturnIndex);
+        return true;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Internal/SpanReader.cs b/src/graphql.language/Internal/SpanReader.cs
index 944111c89..91314db6a 100644
--- a/src/graphql.language/Internal/SpanReader.cs
+++ b/src/graphql.language/Internal/SpanReader.cs
@@ -1,161 +1,160 @@
 using System;
 using System.Runtime.CompilerServices;
 
-namespace Tanka.GraphQL.Language.Internal
+namespace Tanka.GraphQL.Language.Internal;
+
+internal ref struct SpanReader
 {
-    internal ref struct SpanReader
-    {
-        public readonly ReadOnlySpan<byte> Span;
+    public readonly ReadOnlySpan<byte> Span;
+
+    public int Position;
 
-        public int Position;
+    public long Length => Span.Length;
 
-        public long Length => Span.Length;
+    public SpanReader(in ReadOnlySpan<byte> span)
+    {
+        Span = span;
+        Position = -1;
+    }
 
-        public SpanReader(in ReadOnlySpan<byte> span)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TryRead(out byte value)
+    {
+        Position++;
+        if (Position >= Length)
         {
-            Span = span;
-            Position = -1;
+            Position--;
+            value = default;
+            return false;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TryRead(out byte value)
-        {
-            Position++;
-            if (Position >= Length)
-            {
-                Position--;
-                value = default;
-                return false;
-            }
+        value = Span[Position];
+        return true;
+    }
 
-            value = Span[Position];
-            return true;
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TryPeek(out byte value)
+    {
+        var nextPosition = Position + 1;
+        if (nextPosition >= Length)
+        {
+            value = default;
+            return false;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TryPeek(out byte value)
-        {
-            var nextPosition = Position + 1;
-            if (nextPosition >= Length)
-            {
-                value = default;
-                return false;
-            }
+        value = Span[nextPosition];
+        return true;
+    }
 
-            value = Span[nextPosition];
-            return true;
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool Advance(in int count = 1)
+    {
+        var newPosition = Position += count;
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool Advance(in int count = 1)
-        {
-            var newPosition = Position += count;
+        if (newPosition >= Length)
+            return false;
 
-            if (newPosition >= Length)
-                return false;
+        Position = newPosition;
+        return true;
+    }
 
-            Position = newPosition;
-            return true;
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool IsNext(in ReadOnlySpan<byte> maybeNext)
+    {
+        var start = Position + 1;
+        if (maybeNext.Length + start > Length)
+            return false;
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool IsNext(in ReadOnlySpan<byte> maybeNext)
-        {
-            var start = Position + 1;
-            if (maybeNext.Length + start > Length)
-                return false;
 
+        var next = Span.Slice(start, maybeNext.Length);
+        return next.SequenceEqual(maybeNext);
+    }
 
-            var next = Span.Slice(start, maybeNext.Length);
-            return next.SequenceEqual(maybeNext);
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TrySkipNext(in ReadOnlySpan<byte> maybeNext)
+    {
+        if (IsNext(maybeNext))
+        {
+            Position += maybeNext.Length;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TrySkipNext(in ReadOnlySpan<byte> maybeNext)
-        {
-            if (IsNext(maybeNext))
+        return false;
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TrySkipNext(in byte maybeNext)
+    {
+        if (TryPeek(out var value))
+            if (maybeNext == value)
             {
-                Position += maybeNext.Length;
+                Advance();
                 return true;
             }
 
-            return false;
-        }
+        return false;
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TrySkipNext(in byte maybeNext)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TryReadWhileAny(
+        out ReadOnlySpan<byte> data,
+        in bool[] matchTable)
+    {
+        var start = Position + 1;
+        var length = 0;
+        while (TryPeek(out var value))
         {
-            if (TryPeek(out var value))
-                if (maybeNext == value)
-                {
-                    Advance();
-                    return true;
-                }
+            if (!matchTable[value]) break;
 
-            return false;
+            Advance();
+            length++;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TryReadWhileAny(
-            out ReadOnlySpan<byte> data,
-            in bool[] matchTable)
+        if (length == 0)
         {
-            var start = Position + 1;
-            var length = 0;
-            while (TryPeek(out var value))
-            {
-                if (!matchTable[value]) break;
+            data = ReadOnlySpan<byte>.Empty;
+            return false;
+        }
 
-                Advance();
-                length++;
-            }
+        data = Span.Slice(start, length);
+        return true;
+    }
 
-            if (length == 0)
-            {
-                data = ReadOnlySpan<byte>.Empty;
-                return false;
-            }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public bool TryReadWhileNotAny(
+        out ReadOnlySpan<byte> data,
+        in bool[] matchTable)
+    {
+        var start = Position + 1;
+        var length = 0;
+        while (TryPeek(out var value))
+        {
+            if (matchTable[value]) break;
 
-            data = Span.Slice(start, length);
-            return true;
+            Advance();
+            length++;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public bool TryReadWhileNotAny(
-            out ReadOnlySpan<byte> data,
-            in bool[] matchTable)
+        if (length == 0)
         {
-            var start = Position + 1;
-            var length = 0;
-            while (TryPeek(out var value))
-            {
-                if (matchTable[value]) break;
-
-                Advance();
-                length++;
-            }
-
-            if (length == 0)
-            {
-                data = ReadOnlySpan<byte>.Empty;
-                return false;
-            }
-
-            data = Span.Slice(start, length);
-            return true;
+            data = ReadOnlySpan<byte>.Empty;
+            return false;
         }
 
-        public bool TryRead(out ReadOnlySpan<byte> value, int count)
-        {
-            if (Position + count >= Length)
-            {
-                value = default;
-                return false;
-            }
+        data = Span.Slice(start, length);
+        return true;
+    }
 
-            Position++;
-            value = Span.Slice(Position, count);
-            return true;
+    public bool TryRead(out ReadOnlySpan<byte> value, int count)
+    {
+        if (Position + count >= Length)
+        {
+            value = default;
+            return false;
         }
+
+        Position++;
+        value = Span.Slice(Position, count);
+        return true;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Keywords.cs b/src/graphql.language/Keywords.cs
index ec0be9124..97af13023 100644
--- a/src/graphql.language/Keywords.cs
+++ b/src/graphql.language/Keywords.cs
@@ -3,183 +3,171 @@
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class Extensions
 {
-    public static class Extensions
+    public static bool Match(this in ReadOnlyMemory<byte> memory, in ReadOnlySpan<byte> value)
     {
-        public static bool Match(this in ReadOnlyMemory<byte> memory, in ReadOnlySpan<byte> value)
-        {
-            return memory.Span.SequenceEqual(value);
-        }
+        return memory.Span.SequenceEqual(value);
     }
+}
 
-    public static class Keywords
-    {
-        public static ReadOnlyMemory<byte> Query
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("query"));
+public static class Keywords
+{
+    public static ReadOnlyMemory<byte> Query = new(Encoding.UTF8.GetBytes("query"));
 
-        public static ReadOnlyMemory<byte> Mutation
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("mutation"));
+    public static ReadOnlyMemory<byte> Mutation = new(Encoding.UTF8.GetBytes("mutation"));
 
-        public static ReadOnlyMemory<byte> Subscription
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("subscription"));
+    public static ReadOnlyMemory<byte> Subscription = new(Encoding.UTF8.GetBytes("subscription"));
 
-        public static ReadOnlyMemory<byte> Fragment
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("fragment"));
+    public static ReadOnlyMemory<byte> Fragment = new(Encoding.UTF8.GetBytes("fragment"));
 
-        public static ReadOnlyMemory<byte> Null
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("null"));
+    public static ReadOnlyMemory<byte> Null = new(Encoding.UTF8.GetBytes("null"));
 
-        public static ReadOnlyMemory<byte> True
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("true"));
+    public static ReadOnlyMemory<byte> True = new(Encoding.UTF8.GetBytes("true"));
 
-        public static ReadOnlyMemory<byte> False
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("false"));
+    public static ReadOnlyMemory<byte> False = new(Encoding.UTF8.GetBytes("false"));
 
-        public static ReadOnlyMemory<byte> True2
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("True"));
+    public static ReadOnlyMemory<byte> True2 = new(Encoding.UTF8.GetBytes("True"));
 
-        public static ReadOnlyMemory<byte> False2
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("False"));
+    public static ReadOnlyMemory<byte> False2 = new(Encoding.UTF8.GetBytes("False"));
 
-        public static ReadOnlyMemory<byte> On
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("on"));
+    public static ReadOnlyMemory<byte> On = new(Encoding.UTF8.GetBytes("on"));
 
-        public static ReadOnlyMemory<byte> Repeatable
-            = new ReadOnlyMemory<byte>(Encoding.UTF8.GetBytes("repeatable"));
+    public static ReadOnlyMemory<byte> Repeatable = new(Encoding.UTF8.GetBytes("repeatable"));
 
-        public static ReadOnlyMemory<byte> Schema = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("schema"));
+    public static ReadOnlyMemory<byte> Schema = new(
+        Encoding.UTF8.GetBytes("schema"));
 
-        public static ReadOnlyMemory<byte> Directive = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("directive"));
+    public static ReadOnlyMemory<byte> Directive = new(
+        Encoding.UTF8.GetBytes("directive"));
 
-        public static ReadOnlyMemory<byte> Type = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("type"));
+    public static ReadOnlyMemory<byte> Type = new(
+        Encoding.UTF8.GetBytes("type"));
 
-        public static ReadOnlyMemory<byte> Scalar = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("scalar"));
+    public static ReadOnlyMemory<byte> Scalar = new(
+        Encoding.UTF8.GetBytes("scalar"));
 
-        public static ReadOnlyMemory<byte> Interface = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("interface"));
+    public static ReadOnlyMemory<byte> Interface = new(
+        Encoding.UTF8.GetBytes("interface"));
 
-        public static ReadOnlyMemory<byte> Extend = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("extend"));
+    public static ReadOnlyMemory<byte> Extend = new(
+        Encoding.UTF8.GetBytes("extend"));
 
-        public static ReadOnlyMemory<byte> Implements = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("implements"));
+    public static ReadOnlyMemory<byte> Implements = new(
+        Encoding.UTF8.GetBytes("implements"));
 
-        public static ReadOnlyMemory<byte> Union = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("union"));
+    public static ReadOnlyMemory<byte> Union = new(
+        Encoding.UTF8.GetBytes("union"));
 
-        public static ReadOnlyMemory<byte> Enum = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("enum"));
+    public static ReadOnlyMemory<byte> Enum = new(
+        Encoding.UTF8.GetBytes("enum"));
 
-        public static ReadOnlyMemory<byte> Input = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("input"));
+    public static ReadOnlyMemory<byte> Input = new(
+        Encoding.UTF8.GetBytes("input"));
 
-        public static ReadOnlyMemory<byte> Import = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("tanka_import"));
+    public static ReadOnlyMemory<byte> Import = new(
+        Encoding.UTF8.GetBytes("tanka_import"));
 
-        public static ReadOnlyMemory<byte> From = new ReadOnlyMemory<byte>(
-            Encoding.UTF8.GetBytes("from"));
+    public static ReadOnlyMemory<byte> From = new(
+        Encoding.UTF8.GetBytes("from"));
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsOperation(in ReadOnlySpan<byte> span, out OperationType operation)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsOperation(in ReadOnlySpan<byte> span, out OperationType operation)
+    {
+        if (Query.Span.SequenceEqual(span))
         {
-            if (Query.Span.SequenceEqual(span))
-            {
-                operation = OperationType.Query;
-                return true;
-            }
-
-            if (Mutation.Span.SequenceEqual(span))
-            {
-                operation = OperationType.Mutation;
-                return true;
-            }
-
-            if (Subscription.Span.SequenceEqual(span))
-            {
-                operation = OperationType.Subscription;
-                return true;
-            }
-
-            operation = default;
-            return false;
+            operation = OperationType.Query;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsNull(in ReadOnlySpan<byte> span)
+        if (Mutation.Span.SequenceEqual(span))
         {
-            return Null.Span.SequenceEqual(span);
+            operation = OperationType.Mutation;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsBoolean(in ReadOnlySpan<byte> span, out bool value)
+        if (Subscription.Span.SequenceEqual(span))
         {
-            if (True.Match(span) || True2.Match(span))
-            {
-                value = true;
-                return true;
-            }
-
-            if (False.Match(span) || False2.Match(span))
-            {
-                value = false;
-                return true;
-            }
-
-            value = false;
-            return false;
+            operation = OperationType.Subscription;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsOn(in ReadOnlySpan<byte> value)
-        {
-            return On.Span.SequenceEqual(value);
-        }
+        operation = default;
+        return false;
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsFragment(in ReadOnlySpan<byte> value)
-        {
-            return Fragment.Span.SequenceEqual(value);
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsNull(in ReadOnlySpan<byte> span)
+    {
+        return Null.Span.SequenceEqual(span);
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsRepeatable(in ReadOnlySpan<byte> value)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsBoolean(in ReadOnlySpan<byte> span, out bool value)
+    {
+        if (True.Match(span) || True2.Match(span))
         {
-            return Repeatable.Span.SequenceEqual(value);
+            value = true;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsImplements(in ReadOnlySpan<byte> value)
+        if (False.Match(span) || False2.Match(span))
         {
-            return Implements.Span.SequenceEqual(value);
+            value = false;
+            return true;
         }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static bool IsTypeDefinition(in ReadOnlySpan<byte> value)
-        {
-            if (Scalar.Match(value))
-                return true;
+        value = false;
+        return false;
+    }
 
-            if (Type.Match(value))
-                return true;
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsOn(in ReadOnlySpan<byte> value)
+    {
+        return On.Span.SequenceEqual(value);
+    }
 
-            if (Interface.Match(value))
-                return true;
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsFragment(in ReadOnlySpan<byte> value)
+    {
+        return Fragment.Span.SequenceEqual(value);
+    }
 
-            if (Union.Match(value))
-                return true;
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsRepeatable(in ReadOnlySpan<byte> value)
+    {
+        return Repeatable.Span.SequenceEqual(value);
+    }
 
-            if (Enum.Match(value))
-                return true;
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsImplements(in ReadOnlySpan<byte> value)
+    {
+        return Implements.Span.SequenceEqual(value);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static bool IsTypeDefinition(in ReadOnlySpan<byte> value)
+    {
+        if (Scalar.Match(value))
+            return true;
 
-            if (Input.Match(value))
-                return true;
+        if (Type.Match(value))
+            return true;
 
-            return false;
-        }
+        if (Interface.Match(value))
+            return true;
+
+        if (Union.Match(value))
+            return true;
+
+        if (Enum.Match(value))
+            return true;
+
+        if (Input.Match(value))
+            return true;
+
+        return false;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Lexer.cs b/src/graphql.language/Lexer.cs
index e8e4e75a9..705819725 100644
--- a/src/graphql.language/Lexer.cs
+++ b/src/graphql.language/Lexer.cs
@@ -4,58 +4,58 @@
 using System.Text;
 using Tanka.GraphQL.Language.Internal;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public ref struct Lexer
 {
-    public ref struct Lexer
-    {
-        private SpanReader _reader;
+    private SpanReader _reader;
 
-        private int _currentLineStart;
+    private int _currentLineStart;
 
-        public TokenKind Kind { get; private set; }
+    public TokenKind Kind { get; private set; }
 
-        public int Line { get; private set; }
+    public int Line { get; private set; }
 
-        public int Column => Start - _currentLineStart + 1;
+    public int Column => Start - _currentLineStart + 1;
 
-        public int Start { get; set; }
+    public int Start { get; set; }
 
-        public int Position => _reader.Position;
+    public int Position => _reader.Position;
 
-        public ReadOnlySpan<byte> Value { get; private set; }
+    public ReadOnlySpan<byte> Value { get; private set; }
 
-        public bool IsExponential;
+    public bool IsExponential;
 
-        public Lexer(in ReadOnlySpan<byte> span)
-        {
-            _reader = new SpanReader(span);
-            _currentLineStart = 0;
-            Kind = TokenKind.Start;
-            Value = ReadOnlySpan<byte>.Empty;
-            Line = 1;
-            Start = 0;
-            IsExponential = false;
-        }
+    public Lexer(in ReadOnlySpan<byte> span)
+    {
+        _reader = new SpanReader(span);
+        _currentLineStart = 0;
+        Kind = TokenKind.Start;
+        Value = ReadOnlySpan<byte>.Empty;
+        Line = 1;
+        Start = 0;
+        IsExponential = false;
+    }
 
-        public static Lexer Create(in ReadOnlySpan<byte> span)
-        {
-            return new Lexer(span);
-        }
+    public static Lexer Create(in ReadOnlySpan<byte> span)
+    {
+        return new Lexer(span);
+    }
 
-        public static Lexer Create(in string data)
-        {
-            return Create(Encoding.UTF8.GetBytes(data));
-        }
+    public static Lexer Create(in string data)
+    {
+        return Create(Encoding.UTF8.GetBytes(data));
+    }
 
-        public bool Advance()
-        {
-            if (_reader.Position == -1)
-                ReadBom();
+    public bool Advance()
+    {
+        if (_reader.Position == -1)
+            ReadBom();
 
-            IgnoreWhitespace();
+        IgnoreWhitespace();
 
-            if (_reader.TryPeek(out var code))
-            {
+        if (_reader.TryPeek(out var code))
+        {
 #if GQL_COMMENTS
                 if (code == Constants.Hash)
                 {
@@ -64,213 +64,209 @@ public bool Advance()
                 }
 #endif
 
-                if (code == Constants.Quote)
-                {
-                    ReadStringValue();
-                    return true;
-                }
-
-                if (Constants.IsPunctuator(code))
-                {
-                    ReadPunctuator();
-                    return true;
-                }
+            if (code == Constants.Quote)
+            {
+                ReadStringValue();
+                return true;
+            }
 
-                if (_reader.IsNext(Constants.Spread.Span))
-                {
-                    ReadSpreadPunctuator();
-                    return true;
-                }
+            if (Constants.IsPunctuator(code))
+            {
+                ReadPunctuator();
+                return true;
+            }
 
-                if (Constants.IsNameStart(code))
-                {
-                    ReadName();
-                    return true;
-                }
+            if (_reader.IsNext(Constants.Spread.Span))
+            {
+                ReadSpreadPunctuator();
+                return true;
+            }
 
-                if (Constants.IsNumberStart(code))
-                {
-                    ReadNumber();
-                    return true;
-                }
+            if (Constants.IsNameStart(code))
+            {
+                ReadName();
+                return true;
+            }
 
-                throw new Exception("Syntax error");
+            if (Constants.IsNumberStart(code))
+            {
+                ReadNumber();
+                return true;
             }
 
-            Start = Position;
-            Kind = TokenKind.End;
-            return false;
+            throw new Exception("Syntax error");
         }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadStringValue()
-        {
-            Start = Position + 1;
-            var valueStart = Start + 1;
-            Kind = TokenKind.StringValue;
+        Start = Position;
+        Kind = TokenKind.End;
+        return false;
+    }
 
-            // block string
-            if (_reader.TrySkipNext(Constants.BlockString.Span))
-            {
-                valueStart += 2;
-                while (!_reader.IsNext(Constants.BlockString.Span))
-                {
-                    if (!_reader.Advance())
-                        throw new Exception($"BlockString at {Start} is not terminated.");
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadStringValue()
+    {
+        Start = Position + 1;
+        var valueStart = Start + 1;
+        Kind = TokenKind.StringValue;
 
-                    if (_reader.Span[_reader.Position] == Constants.Backslash)
-                        // skip escaped block string quote
-                        if (_reader.IsNext(Constants.BlockString.Span))
-                            _reader.Advance(3);
-                }
+        // block string
+        if (_reader.TrySkipNext(Constants.BlockString.Span))
+        {
+            valueStart += 2;
+            while (!_reader.IsNext(Constants.BlockString.Span))
+            {
+                if (!_reader.Advance())
+                    throw new Exception($"BlockString at {Start} is not terminated.");
 
-                // skip the end..
-                var end = _reader.Position + 1;
-                _reader.Advance(3);
-                Kind = TokenKind.BlockStringValue;
-                Value = _reader.Span.Slice(valueStart, end - valueStart);
-                return;
+                if (_reader.Span[_reader.Position] == Constants.Backslash)
+                    // skip escaped block string quote
+                    if (_reader.IsNext(Constants.BlockString.Span))
+                        _reader.Advance(3);
             }
 
-            // normal string
-            // skip first quote
-            if (!_reader.Advance())
-                throw new Exception($"StringValue at {Start} is not terminated.");
+            // skip the end..
+            var end = _reader.Position + 1;
+            _reader.Advance(3);
+            Kind = TokenKind.BlockStringValue;
+            Value = _reader.Span.Slice(valueStart, end - valueStart);
+            return;
+        }
 
-            while (_reader.TryRead(out var code))
-            {
-                if (code != Constants.Quote)
-                    continue;
+        // normal string
+        // skip first quote
+        if (!_reader.Advance())
+            throw new Exception($"StringValue at {Start} is not terminated.");
 
-                // check escape
-                if (Position > 0 && _reader.Span[Position - 1] == Constants.Backslash) continue;
+        while (_reader.TryRead(out var code))
+        {
+            if (code != Constants.Quote)
+                continue;
 
-                Value = _reader.Span.Slice(valueStart, Position - valueStart);
-                return;
-            }
+            // check escape
+            if (Position > 0 && _reader.Span[Position - 1] == Constants.Backslash) continue;
 
-            throw new Exception($"StringValue at {Start} is not terminated.");
+            Value = _reader.Span.Slice(valueStart, Position - valueStart);
+            return;
         }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadNumber()
-        {
-            Kind = TokenKind.IntValue;
-            Start = Position + 1;
-            IsExponential = false;
-            var isFloat = false;
-
-            // starts with minus
-            if (_reader.TryPeek(out var code))
-                if (code == Constants.Minus)
-                    _reader.Advance();
+        throw new Exception($"StringValue at {Start} is not terminated.");
+    }
 
-            // starts with zero cannot follow with zero
-            if (_reader.TryPeek(out code))
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadNumber()
+    {
+        Kind = TokenKind.IntValue;
+        Start = Position + 1;
+        IsExponential = false;
+        var isFloat = false;
+
+        // starts with minus
+        if (_reader.TryPeek(out var code))
+            if (code == Constants.Minus)
+                _reader.Advance();
+
+        // starts with zero cannot follow with zero
+        if (_reader.TryPeek(out code))
+            if (code == '0')
             {
-                if (code == '0')
-                {
-                    _reader.Advance();
+                _reader.Advance();
 
-                    if (_reader.TryPeek(out code))
-                    {
-                        if (code == '0')
-                            throw new Exception(
-                                $"Invalid number value starting at {Start}. " +
-                                $"Number starting with zero cannot be followed by zero.");
-                    }
-                }
+                if (_reader.TryPeek(out code))
+                    if (code == '0')
+                        throw new Exception(
+                            $"Invalid number value starting at {Start}. " +
+                            "Number starting with zero cannot be followed by zero.");
             }
 
+        _reader.TryReadWhileAny(
+            out var integerPart,
+            Constants.IsDigit);
+
+        if (_reader.TryPeek(out code))
+        {
+            if (code == Constants.e || code == Constants.E)
+            {
+                _reader.Advance();
+                if (_reader.TryPeek(out var nextCode))
+                    if (Constants.IsDigit[nextCode])
+                        IsExponential = true;
+            }
+
+            if (code == Constants.Dot)
+            {
+                _reader.Advance();
+                if (_reader.TryPeek(out var nextCode))
+                    if (Constants.IsDigit[nextCode])
+                        isFloat = true;
+            }
+        }
+
+        if (IsExponential || isFloat)
+        {
+            Kind = TokenKind.FloatValue;
+
             _reader.TryReadWhileAny(
-                out var integerPart,
+                out var fractionPart,
                 Constants.IsDigit);
 
             if (_reader.TryPeek(out code))
-            {
                 if (code == Constants.e || code == Constants.E)
                 {
                     _reader.Advance();
                     if (_reader.TryPeek(out var nextCode))
                         if (Constants.IsDigit[nextCode])
+                        {
                             IsExponential = true;
+                            _reader.TryReadWhileAny(
+                                out _,
+                                Constants.IsDigit);
+                        }
                 }
-
-                if (code == Constants.Dot)
-                {
-                    _reader.Advance();
-                    if (_reader.TryPeek(out var nextCode))
-                        if (Constants.IsDigit[nextCode])
-                            isFloat = true;
-                }
-            }
-
-            if (IsExponential || isFloat)
-            {
-                Kind = TokenKind.FloatValue;
-
-                _reader.TryReadWhileAny(
-                    out var fractionPart,
-                    Constants.IsDigit);
-
-                if (_reader.TryPeek(out code))
-                    if (code == Constants.e || code == Constants.E)
-                    {
-                        _reader.Advance();
-                        if (_reader.TryPeek(out var nextCode))
-                            if (Constants.IsDigit[nextCode])
-                            {
-                                IsExponential = true;
-                                _reader.TryReadWhileAny(
-                                    out _,
-                                    Constants.IsDigit);
-                            }
-                    }
-            }
-
-            Value = _reader.Span.Slice(Start, Position - Start + 1);
-            IsExponential = true;
         }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadSpreadPunctuator()
-        {
-            _reader.Advance();
-            Kind = TokenKind.Spread;
-            Start = _reader.Position;
-            _reader.Advance(2);
-        }
+        Value = _reader.Span.Slice(Start, Position - Start + 1);
+        IsExponential = true;
+    }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadName()
-        {
-            Kind = TokenKind.Name;
-            Start = _reader.Position + 1;
-            _reader.TryReadWhileAny(
-                out var data,
-                Constants.IsLetterOrDigitOrUnderscore);
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadSpreadPunctuator()
+    {
+        _reader.Advance();
+        Kind = TokenKind.Spread;
+        Start = _reader.Position;
+        _reader.Advance(2);
+    }
 
-            Value = data;
-        }
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadName()
+    {
+        Kind = TokenKind.Name;
+        Start = _reader.Position + 1;
+        _reader.TryReadWhileAny(
+            out var data,
+            Constants.IsLetterOrDigitOrUnderscore);
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadPunctuator()
+        Value = data;
+    }
+
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadPunctuator()
+    {
+        if (_reader.TryRead(out var code))
         {
-            if (_reader.TryRead(out var code))
-            {
-                Start = Position;
-                Kind = Constants.GetTokenKind(code);
-            }
+            Start = Position;
+            Kind = Constants.GetTokenKind(code);
         }
+    }
 
 
-        /// <summary>
-        ///     comment
-        /// </summary>
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        [Conditional("GQL_COMMENTS")]
-        private void ReadComment()
-        {
+    /// <summary>
+    ///     comment
+    /// </summary>
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    [Conditional("GQL_COMMENTS")]
+    private void ReadComment()
+    {
 #if GQL_COMMENTS
             Kind = TokenKind.Comment;
 
@@ -288,48 +284,47 @@ private void ReadComment()
 
             Value = data;
 #endif
-        }
+    }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void IgnoreWhitespace()
-        {
-            while (_reader.TryPeek(out var code))
-                switch (code)
-                {
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void IgnoreWhitespace()
+    {
+        while (_reader.TryPeek(out var code))
+            switch (code)
+            {
 #if !GQL_COMMENTS
-                    case Constants.Hash:
-                        _reader.TryReadWhileNotAny(out _, Constants.IsReturnOrNewLine);
-                        break;
+                case Constants.Hash:
+                    _reader.TryReadWhileNotAny(out _, Constants.IsReturnOrNewLine);
+                    break;
 #endif
-                    case Constants.NewLine:
-                        _reader.Advance();
-                        StartNewLine();
-                        break;
-                    case Constants.Return:
-                        _reader.Advance();
-                        break;
-                    case Constants.Tab:
-                    case Constants.Space:
-                    case Constants.Comma:
-                        _reader.Advance();
-                        break;
-                    default:
-                        return;
-                }
-        }
+                case Constants.NewLine:
+                    _reader.Advance();
+                    StartNewLine();
+                    break;
+                case Constants.Return:
+                    _reader.Advance();
+                    break;
+                case Constants.Tab:
+                case Constants.Space:
+                case Constants.Comma:
+                    _reader.Advance();
+                    break;
+                default:
+                    return;
+            }
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void StartNewLine()
-        {
-            Line++;
-            _currentLineStart = _reader.Position;
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void StartNewLine()
+    {
+        Line++;
+        _currentLineStart = _reader.Position;
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void ReadBom()
-        {
-            // skip bom
-            _reader.TrySkipNext(Constants.Bom.Span);
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void ReadBom()
+    {
+        // skip bom
+        _reader.TrySkipNext(Constants.Bom.Span);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Argument.cs b/src/graphql.language/Nodes/Argument.cs
index 2a13e0da4..5f7f46b95 100644
--- a/src/graphql.language/Nodes/Argument.cs
+++ b/src/graphql.language/Nodes/Argument.cs
@@ -1,20 +1,20 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class Argument : INode
 {
-    public sealed class Argument : INode
-    {
-        public NodeKind Kind => NodeKind.Argument;
-        public Location? Location {get;}
-        public readonly Name Name;
-        public readonly ValueBase Value;
+    public readonly Name Name;
+    public readonly ValueBase Value;
 
-        public Argument(
-            in Name name,
-            ValueBase value,
-            in Location? location = default)
-        {
-            Name = name;
-            Value = value;
-            Location = location;
-        }
+    public Argument(
+        in Name name,
+        ValueBase value,
+        in Location? location = default)
+    {
+        Name = name;
+        Value = value;
+        Location = location;
     }
+
+    public NodeKind Kind => NodeKind.Argument;
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Arguments.cs b/src/graphql.language/Nodes/Arguments.cs
index 9c36dc514..bf7fadda3 100644
--- a/src/graphql.language/Nodes/Arguments.cs
+++ b/src/graphql.language/Nodes/Arguments.cs
@@ -1,16 +1,15 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class Arguments : CollectionNodeBase<Argument>
-    {
-        public Arguments(IReadOnlyList<Argument> items, in Location? location = default) : base(items, in location)
-        {
-        }
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public override NodeKind Kind => NodeKind.Arguments;
+public sealed class Arguments : CollectionNodeBase<Argument>
+{
+    public static Arguments None = new(Array.Empty<Argument>());
 
-        public static Arguments None = new Arguments(Array.Empty<Argument>());
+    public Arguments(IReadOnlyList<Argument> items, in Location? location = default) : base(items, in location)
+    {
     }
+
+    public override NodeKind Kind => NodeKind.Arguments;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/BooleanValue.cs b/src/graphql.language/Nodes/BooleanValue.cs
index b9172c9a7..2038a6229 100644
--- a/src/graphql.language/Nodes/BooleanValue.cs
+++ b/src/graphql.language/Nodes/BooleanValue.cs
@@ -1,17 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class BooleanValue : ValueBase, INode
 {
-    public sealed class BooleanValue : ValueBase, INode
-    {
-        public override NodeKind Kind => NodeKind.BooleanValue;
-        public override Location? Location {get;}
-        public readonly bool Value;
+    public readonly bool Value;
 
-        public BooleanValue(
-            bool value,
-            in Location? location = default)
-        {
-            Value = value;
-            Location = location;
-        }
+    public BooleanValue(
+        bool value,
+        in Location? location = default)
+    {
+        Value = value;
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.BooleanValue;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/CollectionNodeBase.cs b/src/graphql.language/Nodes/CollectionNodeBase.cs
index ced1aaa91..757ed8cc8 100644
--- a/src/graphql.language/Nodes/CollectionNodeBase.cs
+++ b/src/graphql.language/Nodes/CollectionNodeBase.cs
@@ -1,36 +1,35 @@
 using System.Collections;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public abstract class CollectionNodeBase<T> : ICollectionNode<T> where T : INode
 {
-    public abstract class CollectionNodeBase<T> : ICollectionNode<T> where T : INode
-    {
-        private readonly IReadOnlyList<T> _items;
+    private readonly IReadOnlyList<T> _items;
 
-        protected CollectionNodeBase(
-            IReadOnlyList<T> items,
-            in Location? location = default)
-        {
-            _items = items;
-            Location = location;
-        }
+    protected CollectionNodeBase(
+        IReadOnlyList<T> items,
+        in Location? location = default)
+    {
+        _items = items;
+        Location = location;
+    }
 
-        public abstract NodeKind Kind { get; }
+    public abstract NodeKind Kind { get; }
 
-        public Location? Location { get; }
+    public Location? Location { get; }
 
-        public IEnumerator<T> GetEnumerator()
-        {
-            return _items.GetEnumerator();
-        }
+    public IEnumerator<T> GetEnumerator()
+    {
+        return _items.GetEnumerator();
+    }
 
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return ((IEnumerable) _items).GetEnumerator();
-        }
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return ((IEnumerable)_items).GetEnumerator();
+    }
 
-        public int Count => _items.Count;
+    public int Count => _items.Count;
 
-        public T this[int index] => _items[index];
-    }
+    public T this[int index] => _items[index];
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/DefaultValue.cs b/src/graphql.language/Nodes/DefaultValue.cs
index d9c7d4af6..5a39b66cb 100644
--- a/src/graphql.language/Nodes/DefaultValue.cs
+++ b/src/graphql.language/Nodes/DefaultValue.cs
@@ -1,17 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class DefaultValue : INode
 {
-    public sealed class DefaultValue: INode
-    {
-        public NodeKind Kind => NodeKind.DefaultValue;
-        public Location? Location {get;}
-        public readonly ValueBase Value;
+    public readonly ValueBase Value;
 
-        public DefaultValue(
-            ValueBase value,
-            in Location? location = default)
-        {
-            Value = value;
-            Location = location;
-        }
+    public DefaultValue(
+        ValueBase value,
+        in Location? location = default)
+    {
+        Value = value;
+        Location = location;
     }
+
+    public NodeKind Kind => NodeKind.DefaultValue;
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Directives.cs b/src/graphql.language/Nodes/Directives.cs
index d4a7a807f..dc0966e91 100644
--- a/src/graphql.language/Nodes/Directives.cs
+++ b/src/graphql.language/Nodes/Directives.cs
@@ -2,42 +2,41 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class Directives : CollectionNodeBase<Directive>
 {
-    public sealed class Directives : CollectionNodeBase<Directive>
+    public static Directives None = new(Array.Empty<Directive>());
+
+    public Directives(
+        IReadOnlyList<Directive> items,
+        in Location? location = default)
+        : base(items, in location)
     {
-        public static Directives None = new Directives(Array.Empty<Directive>());
+    }
 
-        public Directives(
-            IReadOnlyList<Directive> items,
-            in Location? location = default)
-            : base(items, in location)
-        {
-        }
+    public override NodeKind Kind => NodeKind.Directives;
 
-        public override NodeKind Kind => NodeKind.Directives;
+    public static Directives? From(
+        IReadOnlyList<Directive>? directives)
+    {
+        if (directives == null)
+            return null;
 
-        public static Directives? From(
-            IReadOnlyList<Directive>? directives)
+        return new Directives(directives);
+    }
+
+    public bool TryGet(Name directiveName, [NotNullWhen(true)] out Directive? directive)
+    {
+        foreach (var directiveThis in this)
         {
-            if (directives == null)
-                return null;
+            if (directiveThis.Name != directiveName) continue;
 
-            return new Directives(directives);
+            directive = directiveThis;
+            return true;
         }
 
-        public bool TryGet(Name directiveName, [NotNullWhen(true)] out Directive? directive)
-        {
-            foreach (var directiveThis in this)
-            {
-                if (directiveThis.Name != directiveName) continue;
-                
-                directive = directiveThis;
-                return true;
-            }
-
-            directive = null;
-            return false;
-        }
+        directive = null;
+        return false;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/EnumValue.cs b/src/graphql.language/Nodes/EnumValue.cs
index 2b7510398..5f9f8e16d 100644
--- a/src/graphql.language/Nodes/EnumValue.cs
+++ b/src/graphql.language/Nodes/EnumValue.cs
@@ -1,72 +1,72 @@
 using System;
 using System.Diagnostics;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+[DebuggerDisplay("{Name}")]
+public sealed class EnumValue : ValueBase, INode, IEquatable<EnumValue>, IEquatable<string>
 {
-    [DebuggerDisplay("{Name}")]
-    public sealed class EnumValue : ValueBase, INode, IEquatable<EnumValue>, IEquatable<string>
+    public readonly Name Name;
+
+    public EnumValue(
+        in Name name,
+        in Location? location = default)
+    {
+        Name = name;
+        Location = location;
+    }
+
+    public bool Equals(EnumValue? other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return Name.Equals(other.Name);
+    }
+
+    public bool Equals(string? other)
+    {
+        return Name.Equals(other);
+    }
+
+    public override NodeKind Kind => NodeKind.EnumValue;
+    public override Location? Location { get; }
+
+    public override int GetHashCode()
+    {
+        return Name.GetHashCode();
+    }
+
+    public static bool operator ==(EnumValue? left, EnumValue? right)
     {
-        public override NodeKind Kind => NodeKind.EnumValue;
-        public override Location? Location {get;}
-        public readonly Name Name;
-
-        public EnumValue(
-            in Name name,
-            in Location? location = default)
-        {
-            Name = name;
-            Location = location;
-        }
-
-        public override int GetHashCode()
-        {
-            return Name.GetHashCode();
-        }
-
-        public static bool operator ==(EnumValue? left, EnumValue? right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(EnumValue? left, EnumValue? right)
-        {
-            return !Equals(left, right);
-        }
-
-        public bool Equals(EnumValue? other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Name.Equals(other.Name);
-        }
-
-        public bool Equals(string? other)
-        {
-            return Name.Equals(other);
-        }
-
-        public bool Equals(Enum systemEnum)
-        {
-            var enumName = Enum.GetName(systemEnum.GetType(), systemEnum);
-
-            return Equals(enumName);
-        }
-
-        public override bool Equals(object? obj)
-        {
-            if (ReferenceEquals(this, obj))
-                return true;
-
-            if (obj is EnumValue otherValue && Equals(otherValue))
-                return true;
-
-            if (obj is string otherStr && Equals(otherStr))
-                return true;
-
-            if (obj is Enum otherEnum && Equals(otherEnum))
-                return true;
-
-            return false;
-        }
+        return Equals(left, right);
+    }
+
+    public static bool operator !=(EnumValue? left, EnumValue? right)
+    {
+        return !Equals(left, right);
+    }
+
+    public bool Equals(Enum systemEnum)
+    {
+        var enumName = Enum.GetName(systemEnum.GetType(), systemEnum);
+
+        return Equals(enumName);
+    }
+
+    public override bool Equals(object? obj)
+    {
+        if (ReferenceEquals(this, obj))
+            return true;
+
+        if (obj is EnumValue otherValue && Equals(otherValue))
+            return true;
+
+        if (obj is string otherStr && Equals(otherStr))
+            return true;
+
+        if (obj is Enum otherEnum && Equals(otherEnum))
+            return true;
+
+        return false;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ExecutableDocument.cs b/src/graphql.language/Nodes/ExecutableDocument.cs
index 7835904f6..08b0f88f9 100644
--- a/src/graphql.language/Nodes/ExecutableDocument.cs
+++ b/src/graphql.language/Nodes/ExecutableDocument.cs
@@ -1,38 +1,38 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class ExecutableDocument : INode
 {
-    public sealed class ExecutableDocument: INode
+    public readonly FragmentDefinitions? FragmentDefinitions;
+    public readonly OperationDefinitions? OperationDefinitions;
+
+    public ExecutableDocument(
+        OperationDefinitions? operationDefinitions,
+        FragmentDefinitions? fragmentDefinitions)
     {
-        public NodeKind Kind => NodeKind.ExecutableDocument;
-        public Location? Location => null;
-        public readonly FragmentDefinitions? FragmentDefinitions;
-        public readonly OperationDefinitions? OperationDefinitions;
+        OperationDefinitions = operationDefinitions;
+        FragmentDefinitions = fragmentDefinitions;
+    }
 
-        public ExecutableDocument(
-            OperationDefinitions? operationDefinitions,
-            FragmentDefinitions? fragmentDefinitions)
-        {
-            OperationDefinitions = operationDefinitions;
-            FragmentDefinitions = fragmentDefinitions;
-        }
+    public NodeKind Kind => NodeKind.ExecutableDocument;
+    public Location? Location => null;
 
-        public static implicit operator ExecutableDocument(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseExecutableDocument();
-        }
+    public static implicit operator ExecutableDocument(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseExecutableDocument();
+    }
 
-        public static implicit operator ExecutableDocument(ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseExecutableDocument();
-        }
+    public static implicit operator ExecutableDocument(ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseExecutableDocument();
+    }
 
-        public override string ToString()
-        {
-            return Printer.Print(this);
-        }
+    public override string ToString()
+    {
+        return Printer.Print(this);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FieldSelection.cs b/src/graphql.language/Nodes/FieldSelection.cs
index 40371d9d1..91f1ecda6 100644
--- a/src/graphql.language/Nodes/FieldSelection.cs
+++ b/src/graphql.language/Nodes/FieldSelection.cs
@@ -1,37 +1,35 @@
-using System.Collections.Generic;
+namespace Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Nodes
+public sealed class FieldSelection : ISelection, INode
 {
-    public sealed class FieldSelection : ISelection, INode
-    {
-        public NodeKind Kind => NodeKind.FieldSelection;
-        public readonly Name Alias;
-        public readonly Arguments? Arguments;
-        public Directives? Directives { get; }
-        public Location? Location {get;}
-        public readonly Name Name;
-        public readonly SelectionSet? SelectionSet;
-
-        public readonly Name AliasOrName;
+    public readonly Name Alias;
 
-        public FieldSelection(
-            in Name alias,
-            in Name name,
-            Arguments? arguments,
-            Directives? directives,
-            SelectionSet? selectionSet,
-            in Location? location = default)
-        {
-            Alias = alias;
-            Name = name;
-            Arguments = arguments;
-            Directives = directives;
-            SelectionSet = selectionSet;
-            Location = location;
+    public readonly Name AliasOrName;
+    public readonly Arguments? Arguments;
+    public readonly Name Name;
+    public readonly SelectionSet? SelectionSet;
 
-            AliasOrName = alias != default ? alias : name;
-        }
+    public FieldSelection(
+        in Name alias,
+        in Name name,
+        Arguments? arguments,
+        Directives? directives,
+        SelectionSet? selectionSet,
+        in Location? location = default)
+    {
+        Alias = alias;
+        Name = name;
+        Arguments = arguments;
+        Directives = directives;
+        SelectionSet = selectionSet;
+        Location = location;
 
-        public SelectionType SelectionType => SelectionType.Field;
+        AliasOrName = alias != default ? alias : name;
     }
+
+    public NodeKind Kind => NodeKind.FieldSelection;
+    public Directives? Directives { get; }
+    public Location? Location { get; }
+
+    public SelectionType SelectionType => SelectionType.Field;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FloatValue.cs b/src/graphql.language/Nodes/FloatValue.cs
index c51e06d70..59cc8a41d 100644
--- a/src/graphql.language/Nodes/FloatValue.cs
+++ b/src/graphql.language/Nodes/FloatValue.cs
@@ -1,24 +1,23 @@
 using System;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class FloatValue : ValueBase, INode
-    {
-        public override NodeKind Kind => NodeKind.FloatValue;
-        public readonly bool IsExponent;
-        public override Location? Location {get;}
-        public readonly ReadOnlyMemory<byte> Value;
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public FloatValue(
-            in byte[] value,
-            bool isExponent,
-            in Location? location = default)
-        {
-            Value = value;
-            IsExponent = isExponent;
-            Location = location;
-        }
+public sealed class FloatValue : ValueBase, INode
+{
+    public readonly bool IsExponent;
+    public readonly ReadOnlyMemory<byte> Value;
 
-        public ReadOnlySpan<byte> ValueSpan => Value.Span;
+    public FloatValue(
+        in byte[] value,
+        bool isExponent,
+        in Location? location = default)
+    {
+        Value = value;
+        IsExponent = isExponent;
+        Location = location;
     }
+
+    public ReadOnlySpan<byte> ValueSpan => Value.Span;
+    public override NodeKind Kind => NodeKind.FloatValue;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FragmentDefinition.cs b/src/graphql.language/Nodes/FragmentDefinition.cs
index abb996d82..9bce6f26b 100644
--- a/src/graphql.language/Nodes/FragmentDefinition.cs
+++ b/src/graphql.language/Nodes/FragmentDefinition.cs
@@ -1,36 +1,34 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
+using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class FragmentDefinition : INode
 {
-    public sealed class FragmentDefinition: INode
+    public readonly Directives? Directives;
+    public readonly Name FragmentName;
+    public readonly SelectionSet SelectionSet;
+    public readonly NamedType TypeCondition;
+
+    public FragmentDefinition(
+        in Name fragmentName,
+        NamedType typeCondition,
+        Directives? directives,
+        SelectionSet selectionSet,
+        in Location? location = default)
     {
-        public NodeKind Kind => NodeKind.FragmentDefinition;
-        public readonly Directives? Directives;
-        public readonly Name FragmentName;
-        public Location? Location {get;}
-        public readonly SelectionSet SelectionSet;
-        public readonly NamedType TypeCondition;
+        FragmentName = fragmentName;
+        TypeCondition = typeCondition;
+        Directives = directives;
+        SelectionSet = selectionSet;
+        Location = location;
+    }
 
-        public FragmentDefinition(
-            in Name fragmentName,
-            NamedType typeCondition,
-            Directives? directives,
-            SelectionSet selectionSet,
-            in Location? location = default)
-        {
-            FragmentName = fragmentName;
-            TypeCondition = typeCondition;
-            Directives = directives;
-            SelectionSet = selectionSet;
-            Location = location;
-        }
+    public NodeKind Kind => NodeKind.FragmentDefinition;
+    public Location? Location { get; }
 
-        public static implicit operator FragmentDefinition(string value)
-        {
-            var parser = new Parser(Encoding.UTF8.GetBytes(value));
-            return parser.ParseFragmentDefinition();
-        }
+    public static implicit operator FragmentDefinition(string value)
+    {
+        var parser = new Parser(Encoding.UTF8.GetBytes(value));
+        return parser.ParseFragmentDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FragmentDefinitions.cs b/src/graphql.language/Nodes/FragmentDefinitions.cs
index 7ff20e1f8..681649bfe 100644
--- a/src/graphql.language/Nodes/FragmentDefinitions.cs
+++ b/src/graphql.language/Nodes/FragmentDefinitions.cs
@@ -1,16 +1,16 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class FragmentDefinitions : CollectionNodeBase<FragmentDefinition>
-    {
-        public FragmentDefinitions(IReadOnlyList<FragmentDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public override NodeKind Kind => NodeKind.FragmentDefinitions;
+public sealed class FragmentDefinitions : CollectionNodeBase<FragmentDefinition>
+{
+    public static FragmentDefinitions None = new(Array.Empty<FragmentDefinition>());
 
-        public static FragmentDefinitions None = new (Array.Empty<FragmentDefinition>());
+    public FragmentDefinitions(IReadOnlyList<FragmentDefinition> items, in Location? location = default) : base(items,
+        in location)
+    {
     }
+
+    public override NodeKind Kind => NodeKind.FragmentDefinitions;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/FragmentSpread.cs b/src/graphql.language/Nodes/FragmentSpread.cs
index c18c846b1..f37c383d5 100644
--- a/src/graphql.language/Nodes/FragmentSpread.cs
+++ b/src/graphql.language/Nodes/FragmentSpread.cs
@@ -1,25 +1,22 @@
-using System.Collections.Generic;
+namespace Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Nodes
+public sealed class FragmentSpread : ISelection, INode
 {
-    public sealed class FragmentSpread : ISelection, INode
-    {
-        public NodeKind Kind => NodeKind.FragmentSpread;
-        public Directives? Directives {get;}
+    public readonly Name FragmentName;
 
-        public readonly Name FragmentName;
-        public Location? Location {get;}
+    public FragmentSpread(
+        in Name fragmentName,
+        Directives? directives,
+        in Location? location = default)
+    {
+        FragmentName = fragmentName;
+        Directives = directives;
+        Location = location;
+    }
 
-        public FragmentSpread(
-            in Name fragmentName,
-            Directives? directives,
-            in Location? location = default)
-        {
-            FragmentName = fragmentName;
-            Directives = directives;
-            Location = location;
-        }
+    public NodeKind Kind => NodeKind.FragmentSpread;
+    public Directives? Directives { get; }
+    public Location? Location { get; }
 
-        public SelectionType SelectionType => SelectionType.FragmentSpread;
-    }
+    public SelectionType SelectionType => SelectionType.FragmentSpread;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ICollectionNode.cs b/src/graphql.language/Nodes/ICollectionNode.cs
index 0432c942f..0f65a044e 100644
--- a/src/graphql.language/Nodes/ICollectionNode.cs
+++ b/src/graphql.language/Nodes/ICollectionNode.cs
@@ -1,8 +1,7 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public interface ICollectionNode<out T> : INode, IReadOnlyList<T> where T : INode
 {
-    public interface ICollectionNode<out T> : INode, IReadOnlyList<T> where T : INode
-    {
-    }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/INode.cs b/src/graphql.language/Nodes/INode.cs
index 7f3494668..a60875801 100644
--- a/src/graphql.language/Nodes/INode.cs
+++ b/src/graphql.language/Nodes/INode.cs
@@ -1,67 +1,64 @@
-using System.Runtime.CompilerServices;
+namespace Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Nodes
+public interface INode
 {
-    public interface INode
-    {
-       public NodeKind Kind { get; }
-       public Location? Location { get; }
-    }
+    public NodeKind Kind { get; }
+    public Location? Location { get; }
+}
 
-    public enum NodeKind
-    {
-        Argument,
-        BooleanValue,
-        DefaultValue,
-        Directive,
-        EnumValue,
-        ExecutableDocument,
-        FieldSelection,
-        FloatValue,
-        FragmentDefinition,
-        FragmentSpread,
-        InlineFragment,
-        IntValue,
-        ListValue,
-        NamedType,
-        NonNullType,
-        NullValue,
-        ObjectValue,
-        OperationDefinition,
-        SelectionSet,
-        StringValue,
-        Variable,
-        VariableDefinition,
-        DirectiveDefinition,
-        EnumDefinition,
-        InputObjectDefinition,
-        InterfaceDefinition,
-        ObjectDefinition,
-        ScalarDefinition,
-        SchemaDefinition,
-        SchemaExtension,
-        TypeSystemDocument,
-        UnionDefinition,
-        ListType,
-        ObjectField,
-        EnumValueDefinition,
-        FieldDefinition,
-        InputValueDefinition,
-        TypeExtension,
-        TankaImport,
+public enum NodeKind
+{
+    Argument,
+    BooleanValue,
+    DefaultValue,
+    Directive,
+    EnumValue,
+    ExecutableDocument,
+    FieldSelection,
+    FloatValue,
+    FragmentDefinition,
+    FragmentSpread,
+    InlineFragment,
+    IntValue,
+    ListValue,
+    NamedType,
+    NonNullType,
+    NullValue,
+    ObjectValue,
+    OperationDefinition,
+    SelectionSet,
+    StringValue,
+    Variable,
+    VariableDefinition,
+    DirectiveDefinition,
+    EnumDefinition,
+    InputObjectDefinition,
+    InterfaceDefinition,
+    ObjectDefinition,
+    ScalarDefinition,
+    SchemaDefinition,
+    SchemaExtension,
+    TypeSystemDocument,
+    UnionDefinition,
+    ListType,
+    ObjectField,
+    EnumValueDefinition,
+    FieldDefinition,
+    InputValueDefinition,
+    TypeExtension,
+    TankaImport,
 
-        Directives,
-        Arguments,
-        FragmentDefinitions,
-        OperationDefinitions,
-        VariableDefinitions,
-        ArgumentsDefinition,
-        EnumValuesDefinition,
-        ImplementsInterfaces,
-        FieldsDefinition,
-        RootOperationTypeDefinition,
-        UnionMemberTypes,
-        InputFieldsDefinition,
-        RootOperationTypeDefinitions
-    }
+    Directives,
+    Arguments,
+    FragmentDefinitions,
+    OperationDefinitions,
+    VariableDefinitions,
+    ArgumentsDefinition,
+    EnumValuesDefinition,
+    ImplementsInterfaces,
+    FieldsDefinition,
+    RootOperationTypeDefinition,
+    UnionMemberTypes,
+    InputFieldsDefinition,
+    RootOperationTypeDefinitions
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ISelection.cs b/src/graphql.language/Nodes/ISelection.cs
index d319af934..b39f28c18 100644
--- a/src/graphql.language/Nodes/ISelection.cs
+++ b/src/graphql.language/Nodes/ISelection.cs
@@ -1,11 +1,7 @@
-using System.Collections.Generic;
+namespace Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Nodes
+public interface ISelection : INode
 {
-    public interface ISelection: INode
-    {
-        public SelectionType SelectionType { get; }
-        
-        public Directives? Directives { get; }
-    }
+    public Directives? Directives { get; }
+    public SelectionType SelectionType { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/InlineFragment.cs b/src/graphql.language/Nodes/InlineFragment.cs
index 749a7e118..ea895bae1 100644
--- a/src/graphql.language/Nodes/InlineFragment.cs
+++ b/src/graphql.language/Nodes/InlineFragment.cs
@@ -1,27 +1,26 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class InlineFragment : ISelection, INode
 {
-    public sealed class InlineFragment : ISelection, INode
-    {
-        public readonly SelectionSet SelectionSet;
+    public readonly SelectionSet SelectionSet;
 
-        public readonly NamedType? TypeCondition;
+    public readonly NamedType? TypeCondition;
 
-        public InlineFragment(
-            NamedType? typeCondition,
-            Directives? directives,
-            SelectionSet selectionSet,
-            in Location? location = default)
-        {
-            TypeCondition = typeCondition;
-            Directives = directives;
-            SelectionSet = selectionSet;
-            Location = location;
-        }
+    public InlineFragment(
+        NamedType? typeCondition,
+        Directives? directives,
+        SelectionSet selectionSet,
+        in Location? location = default)
+    {
+        TypeCondition = typeCondition;
+        Directives = directives;
+        SelectionSet = selectionSet;
+        Location = location;
+    }
 
-        public NodeKind Kind => NodeKind.InlineFragment;
-        public Directives? Directives { get; }
-        public Location? Location { get; }
+    public NodeKind Kind => NodeKind.InlineFragment;
+    public Directives? Directives { get; }
+    public Location? Location { get; }
 
-        public SelectionType SelectionType => SelectionType.InlineFragment;
-    }
+    public SelectionType SelectionType => SelectionType.InlineFragment;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/IntValue.cs b/src/graphql.language/Nodes/IntValue.cs
index 1544145eb..0d3677f8a 100644
--- a/src/graphql.language/Nodes/IntValue.cs
+++ b/src/graphql.language/Nodes/IntValue.cs
@@ -1,17 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class IntValue : ValueBase, INode
 {
-    public sealed class IntValue : ValueBase, INode
-    {
-        public override NodeKind Kind => NodeKind.IntValue;
-        public override Location? Location {get;}
-        public readonly int Value;
+    public readonly int Value;
 
-        public IntValue(
-            int value,
-            in Location? location = default)
-        {
-            Value = value;
-            Location = location;
-        }
+    public IntValue(
+        int value,
+        in Location? location = default)
+    {
+        Value = value;
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.IntValue;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ListType.cs b/src/graphql.language/Nodes/ListType.cs
index 61e31ab5e..f2ddc0619 100644
--- a/src/graphql.language/Nodes/ListType.cs
+++ b/src/graphql.language/Nodes/ListType.cs
@@ -1,18 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class ListType : TypeBase
 {
-    public sealed class ListType : TypeBase
-    {
-        public override NodeKind Kind => NodeKind.ListType;
-        public override Location? Location {get;}
-        
-        public readonly TypeBase OfType;
+    public readonly TypeBase OfType;
 
-        public ListType(
-            TypeBase ofType,
-            in Location? location = default)
-        {
-            OfType = ofType;
-            Location = location;
-        }
+    public ListType(
+        TypeBase ofType,
+        in Location? location = default)
+    {
+        OfType = ofType;
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.ListType;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ListValue.cs b/src/graphql.language/Nodes/ListValue.cs
index 071dfbb74..5c37c9515 100644
--- a/src/graphql.language/Nodes/ListValue.cs
+++ b/src/graphql.language/Nodes/ListValue.cs
@@ -1,36 +1,35 @@
 using System.Collections;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class ListValue : ValueBase, ICollectionNode<ValueBase>
-    {
-        public override NodeKind Kind => NodeKind.ListValue;
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public override Location? Location {get;}
+public sealed class ListValue : ValueBase, ICollectionNode<ValueBase>
+{
+    //todo: remove?
+    public readonly IReadOnlyList<ValueBase> Values;
 
-        //todo: remove?
-        public readonly IReadOnlyList<ValueBase> Values;
+    public ListValue(
+        IReadOnlyList<ValueBase> values,
+        in Location? location = default)
+    {
+        Values = values;
+        Location = location;
+    }
 
-        public ListValue(
-            IReadOnlyList<ValueBase> values,
-            in Location? location = default)
-        {
-            Values = values;
-            Location = location;
-        }
+    public override NodeKind Kind => NodeKind.ListValue;
 
-        public IEnumerator<ValueBase> GetEnumerator()
-        {
-            return Values.GetEnumerator();
-        }
+    public override Location? Location { get; }
 
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return ((IEnumerable) Values).GetEnumerator();
-        }
+    public IEnumerator<ValueBase> GetEnumerator()
+    {
+        return Values.GetEnumerator();
+    }
 
-        public int Count => Values.Count;
-        public ValueBase this[int index] => Values[index];
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return ((IEnumerable)Values).GetEnumerator();
     }
+
+    public int Count => Values.Count;
+    public ValueBase this[int index] => Values[index];
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Location.cs b/src/graphql.language/Nodes/Location.cs
index 3d605cd4a..01cd89d5b 100644
--- a/src/graphql.language/Nodes/Location.cs
+++ b/src/graphql.language/Nodes/Location.cs
@@ -1,22 +1,21 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public readonly struct Location
 {
-    public readonly struct Location
+    public Location(int line, int column)
     {
-        public Location(int line, int column)
-        {
-            Line = line;
-            Column = column;
-        }
+        Line = line;
+        Column = column;
+    }
 
-        public readonly int Line;
-        public readonly int Column;
+    public readonly int Line;
+    public readonly int Column;
 
-        public override string ToString()
-        {
-            if (Equals(default(Location)))
-                return "@";
+    public override string ToString()
+    {
+        if (Equals(default(Location)))
+            return "@";
 
-            return $"@{Line}:{Column}";
-        }
+        return $"@{Line}:{Column}";
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Name.cs b/src/graphql.language/Nodes/Name.cs
index 41333efd2..563d8a77f 100644
--- a/src/graphql.language/Nodes/Name.cs
+++ b/src/graphql.language/Nodes/Name.cs
@@ -1,68 +1,67 @@
 using System;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public readonly struct Name : IEquatable<Name>, IEquatable<string>
 {
-    public readonly struct Name : IEquatable<Name>, IEquatable<string>
-    {
-        public Location? Location { get; }
+    public Location? Location { get; }
 
-        public readonly string Value;
+    public readonly string Value;
 
-        public Name(string value, in Location? location = default)
-        {
-            Value = value ?? throw new ArgumentNullException(nameof(value));
-            Location = location;
-        }
+    public Name(string value, in Location? location = default)
+    {
+        Value = value ?? throw new ArgumentNullException(nameof(value));
+        Location = location;
+    }
 
-        public static implicit operator Name(string value)
-        {
-            if (string.IsNullOrEmpty(value))
-                return default;
+    public static implicit operator Name(string value)
+    {
+        if (string.IsNullOrEmpty(value))
+            return default;
 
-            return new Name(value);
-        }
+        return new Name(value);
+    }
 
-        public static implicit operator string(in Name value)
-        {
-            return value.ToString();
-        }
+    public static implicit operator string(in Name value)
+    {
+        return value.ToString();
+    }
 
-        public override string ToString()
-        {
-            return Value;
-        }
+    public override string ToString()
+    {
+        return Value;
+    }
 
-        public bool Equals(Name other)
-        {
-            return Value == other.Value;
-        }
+    public bool Equals(Name other)
+    {
+        return Value == other.Value;
+    }
 
-        public override bool Equals(object? obj)
-        {
-            return obj is Name other && Equals(other);
-        }
+    public override bool Equals(object? obj)
+    {
+        return obj is Name other && Equals(other);
+    }
 
-        public override int GetHashCode()
-        {
-            return Value != null ? Value.GetHashCode() : 0;
-        }
+    public override int GetHashCode()
+    {
+        return Value != null ? Value.GetHashCode() : 0;
+    }
 
-        public static bool operator ==(in Name left, in Name right)
-        {
-            return left.Equals(right);
-        }
+    public static bool operator ==(in Name left, in Name right)
+    {
+        return left.Equals(right);
+    }
 
-        public static bool operator !=(in Name left, in Name right)
-        {
-            return !left.Equals(right);
-        }
+    public static bool operator !=(in Name left, in Name right)
+    {
+        return !left.Equals(right);
+    }
 
-        public bool Equals(string? other)
-        {
-            if (other is null)
-                return false;
+    public bool Equals(string? other)
+    {
+        if (other is null)
+            return false;
 
-            return Value == other;
-        }
+        return Value == other;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/NamedType.cs b/src/graphql.language/Nodes/NamedType.cs
index 457a36bd9..e0f7799cf 100644
--- a/src/graphql.language/Nodes/NamedType.cs
+++ b/src/graphql.language/Nodes/NamedType.cs
@@ -1,26 +1,25 @@
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class NamedType : TypeBase
 {
-    public sealed class NamedType : TypeBase
-    {
-        public readonly Name Name;
+    public readonly Name Name;
 
-        public NamedType(
-            in Name name,
-            in Location? location = default)
-        {
-            Name = name;
-            Location = location;
-        }
+    public NamedType(
+        in Name name,
+        in Location? location = default)
+    {
+        Name = name;
+        Location = location;
+    }
 
-        public override NodeKind Kind => NodeKind.NamedType;
-        public override Location? Location { get; }
+    public override NodeKind Kind => NodeKind.NamedType;
+    public override Location? Location { get; }
 
-        public static implicit operator NamedType(string value)
-        {
-            var parser = new Parser(Encoding.UTF8.GetBytes(value));
-            return parser.ParseNamedType();
-        }
+    public static implicit operator NamedType(string value)
+    {
+        var parser = new Parser(Encoding.UTF8.GetBytes(value));
+        return parser.ParseNamedType();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/NonNullType.cs b/src/graphql.language/Nodes/NonNullType.cs
index a37a8690b..c3243c37f 100644
--- a/src/graphql.language/Nodes/NonNullType.cs
+++ b/src/graphql.language/Nodes/NonNullType.cs
@@ -1,17 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class NonNullType : TypeBase
 {
-    public sealed class NonNullType : TypeBase
-    {
-        public override NodeKind Kind => NodeKind.NonNullType;
-        public override Location? Location {get;}
-        public readonly TypeBase OfType;
+    public readonly TypeBase OfType;
 
-        public NonNullType(
-            TypeBase ofType,
-            in Location? location = default)
-        {
-            OfType = ofType;
-            Location = location;
-        }
+    public NonNullType(
+        TypeBase ofType,
+        in Location? location = default)
+    {
+        OfType = ofType;
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.NonNullType;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/NullValue.cs b/src/graphql.language/Nodes/NullValue.cs
index e39934faf..fd038083b 100644
--- a/src/graphql.language/Nodes/NullValue.cs
+++ b/src/graphql.language/Nodes/NullValue.cs
@@ -1,14 +1,13 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class NullValue : ValueBase, INode
 {
-    public sealed class NullValue : ValueBase, INode
+    public NullValue(
+        in Location? location = default)
     {
-        public override NodeKind Kind => NodeKind.NullValue;
-        public override Location? Location {get;}
-
-        public NullValue(
-            in Location? location = default)
-        {
-            Location = location;
-        }
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.NullValue;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ObjectField.cs b/src/graphql.language/Nodes/ObjectField.cs
index 38881039f..ceef592c8 100644
--- a/src/graphql.language/Nodes/ObjectField.cs
+++ b/src/graphql.language/Nodes/ObjectField.cs
@@ -1,20 +1,20 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class ObjectField : INode
 {
-    public sealed class ObjectField: INode
-    {
-        public NodeKind Kind => NodeKind.ObjectField;
-        public Location? Location {get;}
-        public readonly Name Name;
-        public readonly ValueBase Value;
+    public readonly Name Name;
+    public readonly ValueBase Value;
 
-        public ObjectField(
-            in Name name,
-            ValueBase value,
-            in Location? location = default)
-        {
-            Name = name;
-            Value = value;
-            Location = location;
-        }
+    public ObjectField(
+        in Name name,
+        ValueBase value,
+        in Location? location = default)
+    {
+        Name = name;
+        Value = value;
+        Location = location;
     }
+
+    public NodeKind Kind => NodeKind.ObjectField;
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ObjectValue.cs b/src/graphql.language/Nodes/ObjectValue.cs
index 70ce77a90..77f5ac546 100644
--- a/src/graphql.language/Nodes/ObjectValue.cs
+++ b/src/graphql.language/Nodes/ObjectValue.cs
@@ -1,36 +1,35 @@
 using System.Collections;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class ObjectValue : ValueBase, ICollectionNode<ObjectField>
-    {
-        public override NodeKind Kind => NodeKind.ObjectValue;
+namespace Tanka.GraphQL.Language.Nodes;
 
-        //todo: remove?
-        public readonly IReadOnlyList<ObjectField> Fields;
+public sealed class ObjectValue : ValueBase, ICollectionNode<ObjectField>
+{
+    //todo: remove?
+    public readonly IReadOnlyList<ObjectField> Fields;
 
-        public override Location? Location {get;}
+    public ObjectValue(
+        IReadOnlyList<ObjectField> fields,
+        in Location? location = default)
+    {
+        Fields = fields;
+        Location = location;
+    }
 
-        public ObjectValue(
-            IReadOnlyList<ObjectField> fields,
-            in Location? location = default)
-        {
-            Fields = fields;
-            Location = location;
-        }
+    public override NodeKind Kind => NodeKind.ObjectValue;
 
-        public IEnumerator<ObjectField> GetEnumerator()
-        {
-            return Fields.GetEnumerator();
-        }
+    public override Location? Location { get; }
 
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return ((IEnumerable) Fields).GetEnumerator();
-        }
+    public IEnumerator<ObjectField> GetEnumerator()
+    {
+        return Fields.GetEnumerator();
+    }
 
-        public int Count => Fields.Count;
-        public ObjectField this[int index] => Fields[index];
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return ((IEnumerable)Fields).GetEnumerator();
     }
+
+    public int Count => Fields.Count;
+    public ObjectField this[int index] => Fields[index];
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/OperationDefinition.cs b/src/graphql.language/Nodes/OperationDefinition.cs
index 52bdf8e0d..dae783ef8 100644
--- a/src/graphql.language/Nodes/OperationDefinition.cs
+++ b/src/graphql.language/Nodes/OperationDefinition.cs
@@ -1,41 +1,40 @@
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class OperationDefinition : INode
 {
-    public sealed class OperationDefinition : INode
-    {
-        public readonly Directives? Directives;
-        public readonly Name? Name;
-        public readonly OperationType Operation;
-        public readonly SelectionSet SelectionSet;
-        public readonly VariableDefinitions? VariableDefinitions;
-        public readonly bool IsShort;
+    public readonly Directives? Directives;
+    public readonly bool IsShort;
+    public readonly Name? Name;
+    public readonly OperationType Operation;
+    public readonly SelectionSet SelectionSet;
+    public readonly VariableDefinitions? VariableDefinitions;
 
-        public OperationDefinition(
-            OperationType operation,
-            in Name? name,
-            VariableDefinitions? variableDefinitions,
-            Directives? directives,
-            SelectionSet selectionSet,
-            in Location? location = default,
-            bool isShort = false)
-        {
-            Operation = operation;
-            Name = name;
-            VariableDefinitions = variableDefinitions;
-            Directives = directives;
-            SelectionSet = selectionSet;
-            Location = location;
-            IsShort = isShort;
-        }
+    public OperationDefinition(
+        OperationType operation,
+        in Name? name,
+        VariableDefinitions? variableDefinitions,
+        Directives? directives,
+        SelectionSet selectionSet,
+        in Location? location = default,
+        bool isShort = false)
+    {
+        Operation = operation;
+        Name = name;
+        VariableDefinitions = variableDefinitions;
+        Directives = directives;
+        SelectionSet = selectionSet;
+        Location = location;
+        IsShort = isShort;
+    }
 
-        public NodeKind Kind => NodeKind.OperationDefinition;
-        public Location? Location { get; }
+    public NodeKind Kind => NodeKind.OperationDefinition;
+    public Location? Location { get; }
 
-        public static implicit operator OperationDefinition(string value)
-        {
-            var parser = new Parser(Encoding.UTF8.GetBytes(value));
-            return parser.ParseOperationDefinition();
-        }
+    public static implicit operator OperationDefinition(string value)
+    {
+        var parser = new Parser(Encoding.UTF8.GetBytes(value));
+        return parser.ParseOperationDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/OperationDefinitions.cs b/src/graphql.language/Nodes/OperationDefinitions.cs
index a8ab84405..4a73770b7 100644
--- a/src/graphql.language/Nodes/OperationDefinitions.cs
+++ b/src/graphql.language/Nodes/OperationDefinitions.cs
@@ -1,13 +1,13 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class OperationDefinitions : CollectionNodeBase<OperationDefinition>
 {
-    public sealed class OperationDefinitions : CollectionNodeBase<OperationDefinition>
+    public OperationDefinitions(IReadOnlyList<OperationDefinition> items, in Location? location = default) : base(items,
+        in location)
     {
-        public OperationDefinitions(IReadOnlyList<OperationDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
-
-        public override NodeKind Kind => NodeKind.OperationDefinitions;
     }
+
+    public override NodeKind Kind => NodeKind.OperationDefinitions;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/OperationType.cs b/src/graphql.language/Nodes/OperationType.cs
index cefc816ca..ddcd35e20 100644
--- a/src/graphql.language/Nodes/OperationType.cs
+++ b/src/graphql.language/Nodes/OperationType.cs
@@ -1,9 +1,8 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public enum OperationType
 {
-    public enum OperationType
-    {
-        Query,
-        Mutation,
-        Subscription
-    }
+    Query,
+    Mutation,
+    Subscription
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/SelectionSet.cs b/src/graphql.language/Nodes/SelectionSet.cs
index b08f2dfcf..caff8b627 100644
--- a/src/graphql.language/Nodes/SelectionSet.cs
+++ b/src/graphql.language/Nodes/SelectionSet.cs
@@ -1,20 +1,19 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class SelectionSet : CollectionNodeBase<ISelection>
-    {
-        [Obsolete("SelectionSet is enumerable")]
-        public readonly IReadOnlyList<ISelection> Selections;
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public SelectionSet(
-            IReadOnlyList<ISelection> selections,
-            in Location? location = default) : base(selections, in location)
-        {
-            Selections = selections;
-        }
+public sealed class SelectionSet : CollectionNodeBase<ISelection>
+{
+    [Obsolete("SelectionSet is enumerable")]
+    public readonly IReadOnlyList<ISelection> Selections;
 
-        public override NodeKind Kind => NodeKind.SelectionSet;
+    public SelectionSet(
+        IReadOnlyList<ISelection> selections,
+        in Location? location = default) : base(selections, in location)
+    {
+        Selections = selections;
     }
+
+    public override NodeKind Kind => NodeKind.SelectionSet;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/SelectionType.cs b/src/graphql.language/Nodes/SelectionType.cs
index 02e7cfebb..d5b4bc51b 100644
--- a/src/graphql.language/Nodes/SelectionType.cs
+++ b/src/graphql.language/Nodes/SelectionType.cs
@@ -1,9 +1,8 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public enum SelectionType
 {
-    public enum SelectionType
-    {
-        Field,
-        FragmentSpread,
-        InlineFragment
-    }
+    Field,
+    FragmentSpread,
+    InlineFragment
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/StringValue.cs b/src/graphql.language/Nodes/StringValue.cs
index 56c618806..ee493bb4d 100644
--- a/src/graphql.language/Nodes/StringValue.cs
+++ b/src/graphql.language/Nodes/StringValue.cs
@@ -1,37 +1,36 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class StringValue : ValueBase, INode
 {
-    public sealed class StringValue : ValueBase, INode
-    {
-        public override NodeKind Kind => NodeKind.StringValue;
-        public override Location? Location {get;}
-        public readonly ReadOnlyMemory<byte> Value;
+    public readonly ReadOnlyMemory<byte> Value;
 
-        public StringValue(
-            in byte[] value,
-            in Location? location = default)
-        {
-            Value = value;
-            Location = location;
-        }
+    public StringValue(
+        in byte[] value,
+        in Location? location = default)
+    {
+        Value = value;
+        Location = location;
+    }
 
-        public ReadOnlySpan<byte> ValueSpan => Value.Span;
+    public ReadOnlySpan<byte> ValueSpan => Value.Span;
+    public override NodeKind Kind => NodeKind.StringValue;
+    public override Location? Location { get; }
 
-        public static implicit operator StringValue(string value)
-        {
-            return new StringValue(Encoding.UTF8.GetBytes(value), default);
-        }
+    public static implicit operator StringValue(string value)
+    {
+        return new StringValue(Encoding.UTF8.GetBytes(value));
+    }
 
-        public static implicit operator string?(StringValue? value)
-        {
-            return value?.ToString();
-        }
+    public static implicit operator string?(StringValue? value)
+    {
+        return value?.ToString();
+    }
 
-        public override string ToString()
-        {
-            return Encoding.UTF8.GetString(ValueSpan);
-        }
+    public override string ToString()
+    {
+        return Encoding.UTF8.GetString(ValueSpan);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeBase.cs b/src/graphql.language/Nodes/TypeBase.cs
index 373f6a283..269bbba93 100644
--- a/src/graphql.language/Nodes/TypeBase.cs
+++ b/src/graphql.language/Nodes/TypeBase.cs
@@ -1,23 +1,22 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public abstract class TypeBase : INode
 {
-    public abstract class TypeBase: INode
+    public abstract Location? Location { get; }
+    public abstract NodeKind Kind { get; }
+
+    public static implicit operator TypeBase(string value)
     {
-        public abstract Location? Location { get; }
-        public abstract NodeKind Kind { get; }
-        
-        public static implicit operator TypeBase(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseType();
-        }
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseType();
+    }
 
-        public static implicit operator TypeBase(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseType();
-        }
+    public static implicit operator TypeBase(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseType();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/DirectiveDefinition.cs b/src/graphql.language/Nodes/TypeSystem/DirectiveDefinition.cs
index fc13f57b9..733d92794 100644
--- a/src/graphql.language/Nodes/TypeSystem/DirectiveDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/DirectiveDefinition.cs
@@ -2,44 +2,44 @@
 using System.Collections.Generic;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class DirectiveDefinition : INode
 {
-    public sealed class DirectiveDefinition : INode
+    public DirectiveDefinition(
+        StringValue? description,
+        in Name name,
+        ArgumentsDefinition? arguments,
+        in bool isRepeatable,
+        IReadOnlyList<string> directiveLocations,
+        in Location? location = default)
     {
-        public DirectiveDefinition(
-            StringValue? description,
-            in Name name,
-            ArgumentsDefinition? arguments,
-            in bool isRepeatable,
-            IReadOnlyList<string> directiveLocations,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Arguments = arguments;
-            IsRepeatable = isRepeatable;
-            DirectiveLocations = directiveLocations;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Arguments = arguments;
+        IsRepeatable = isRepeatable;
+        DirectiveLocations = directiveLocations;
+        Location = location;
+    }
+
+    public ArgumentsDefinition? Arguments { get; }
 
-        public StringValue? Description { get; }
-        public Name Name { get; }
-        public ArgumentsDefinition? Arguments { get; }
-        public bool IsRepeatable { get; }
-        public IReadOnlyList<string> DirectiveLocations { get; }
-        public NodeKind Kind => NodeKind.DirectiveDefinition;
-        public Location? Location { get; }
+    public StringValue? Description { get; }
+    public IReadOnlyList<string> DirectiveLocations { get; }
+    public bool IsRepeatable { get; }
+    public Name Name { get; }
+    public NodeKind Kind => NodeKind.DirectiveDefinition;
+    public Location? Location { get; }
 
-        public static implicit operator DirectiveDefinition(string value)
-        {
-            var parser = new Parser(Encoding.UTF8.GetBytes(value));
-            return parser.ParseDirectiveDefinition();
-        }
+    public static implicit operator DirectiveDefinition(string value)
+    {
+        var parser = new Parser(Encoding.UTF8.GetBytes(value));
+        return parser.ParseDirectiveDefinition();
+    }
 
-        public static implicit operator DirectiveDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = new Parser(value);
-            return parser.ParseDirectiveDefinition();
-        }
+    public static implicit operator DirectiveDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = new Parser(value);
+        return parser.ParseDirectiveDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs b/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
index fd460cb8e..91dc6ee42 100644
--- a/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/EnumDefinition.cs
@@ -1,41 +1,40 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class EnumDefinition : TypeDefinition
 {
-    public sealed class EnumDefinition : TypeDefinition
+    public EnumDefinition(
+        StringValue? description,
+        in Name name,
+        Directives? directives,
+        EnumValuesDefinition? values,
+        in Location? location = default)
     {
-        public EnumDefinition(
-            StringValue? description,
-            in Name name,
-            Directives? directives,
-            EnumValuesDefinition? values,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Directives = directives;
-            Values = values;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Directives = directives;
+        Values = values;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public override Directives? Directives { get; }
-        public override Name Name { get; }
-        public EnumValuesDefinition? Values { get; }
-        public override NodeKind Kind => NodeKind.EnumDefinition;
-        public override Location? Location { get; }
+    public StringValue? Description { get; }
+    public override Directives? Directives { get; }
+    public override NodeKind Kind => NodeKind.EnumDefinition;
+    public override Location? Location { get; }
+    public override Name Name { get; }
+    public EnumValuesDefinition? Values { get; }
 
-        public static implicit operator EnumDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseEnumDefinition();
-        }
+    public static implicit operator EnumDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseEnumDefinition();
+    }
 
-        public static implicit operator EnumDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseEnumDefinition();
-        }
+    public static implicit operator EnumDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseEnumDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs b/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
index 4a5090b97..01bd7becb 100644
--- a/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/EnumValueDefinition.cs
@@ -2,39 +2,38 @@
 using System.Diagnostics;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+[DebuggerDisplay("{Value}")]
+public sealed class EnumValueDefinition : INode
 {
-    [DebuggerDisplay("{Value}")]
-    public sealed class EnumValueDefinition : INode
+    public EnumValueDefinition(
+        StringValue? description,
+        EnumValue value,
+        Directives? directives,
+        in Location? location = default)
     {
-        public EnumValueDefinition(
-            StringValue? description,
-            EnumValue value,
-            Directives? directives,
-            in Location? location = default)
-        {
-            Description = description;
-            Value = value;
-            Directives = directives;
-            Location = location;
-        }
+        Description = description;
+        Value = value;
+        Directives = directives;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public EnumValue Value { get; }
-        public Directives? Directives { get; }
-        public NodeKind Kind => NodeKind.EnumValueDefinition;
-        public Location? Location { get; }
+    public StringValue? Description { get; }
+    public Directives? Directives { get; }
+    public EnumValue Value { get; }
+    public NodeKind Kind => NodeKind.EnumValueDefinition;
+    public Location? Location { get; }
 
-        public static implicit operator EnumValueDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseEnumValueDefinition();
-        }
+    public static implicit operator EnumValueDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseEnumValueDefinition();
+    }
 
-        public static implicit operator EnumValueDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseEnumValueDefinition();
-        }
+    public static implicit operator EnumValueDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseEnumValueDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/EnumValuesDefinition.cs b/src/graphql.language/Nodes/TypeSystem/EnumValuesDefinition.cs
index a461c23be..17e70c70b 100644
--- a/src/graphql.language/Nodes/TypeSystem/EnumValuesDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/EnumValuesDefinition.cs
@@ -1,13 +1,13 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class EnumValuesDefinition : CollectionNodeBase<EnumValueDefinition>
 {
-    public sealed class EnumValuesDefinition : CollectionNodeBase<EnumValueDefinition>
+    public EnumValuesDefinition(IReadOnlyList<EnumValueDefinition> items, in Location? location = default) : base(items,
+        in location)
     {
-        public EnumValuesDefinition(IReadOnlyList<EnumValueDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
-
-        public override NodeKind Kind => NodeKind.EnumValuesDefinition;
     }
+
+    public override NodeKind Kind => NodeKind.EnumValuesDefinition;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/ExecutableDirectiveLocations.cs b/src/graphql.language/Nodes/TypeSystem/ExecutableDirectiveLocations.cs
index 62ffc62e6..4ac74d5ae 100644
--- a/src/graphql.language/Nodes/TypeSystem/ExecutableDirectiveLocations.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ExecutableDirectiveLocations.cs
@@ -1,28 +1,27 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public static class ExecutableDirectiveLocations
 {
-    public static class ExecutableDirectiveLocations
-    {
-        public const string QUERY = nameof(QUERY);
-        public const string MUTATION = nameof(MUTATION);
-        public const string SUBSCRIPTION = nameof(SUBSCRIPTION);
-        public const string FIELD = nameof(FIELD);
-        public const string FRAGMENT_DEFINITION = nameof(FRAGMENT_DEFINITION);
-        public const string FRAGMENT_SPREAD = nameof(FRAGMENT_SPREAD);
-        public const string INLINE_FRAGMENT = nameof(INLINE_FRAGMENT);
-        public const string VARIABLE_DEFINITION = nameof(VARIABLE_DEFINITION);
+    public const string QUERY = nameof(QUERY);
+    public const string MUTATION = nameof(MUTATION);
+    public const string SUBSCRIPTION = nameof(SUBSCRIPTION);
+    public const string FIELD = nameof(FIELD);
+    public const string FRAGMENT_DEFINITION = nameof(FRAGMENT_DEFINITION);
+    public const string FRAGMENT_SPREAD = nameof(FRAGMENT_SPREAD);
+    public const string INLINE_FRAGMENT = nameof(INLINE_FRAGMENT);
+    public const string VARIABLE_DEFINITION = nameof(VARIABLE_DEFINITION);
 
-        public static IReadOnlyList<string> All = new List<string>
-        {
-            QUERY,
-            MUTATION,
-            SUBSCRIPTION,
-            FIELD,
-            FRAGMENT_SPREAD,
-            FRAGMENT_SPREAD,
-            INLINE_FRAGMENT,
-            VARIABLE_DEFINITION
-        };
-    }
+    public static IReadOnlyList<string> All = new List<string>
+    {
+        QUERY,
+        MUTATION,
+        SUBSCRIPTION,
+        FIELD,
+        FRAGMENT_SPREAD,
+        FRAGMENT_SPREAD,
+        INLINE_FRAGMENT,
+        VARIABLE_DEFINITION
+    };
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs b/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
index 7be9d7795..92da6ce2e 100644
--- a/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/FieldDefinition.cs
@@ -1,43 +1,43 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class FieldDefinition : INode
 {
-    public sealed class FieldDefinition : INode
+    public FieldDefinition(StringValue? description,
+        in Name name,
+        ArgumentsDefinition? arguments,
+        TypeBase type,
+        Directives? directives = default,
+        in Location? location = default)
     {
-        public FieldDefinition(StringValue? description,
-            in Name name,
-            ArgumentsDefinition? arguments,
-            TypeBase type,
-            Directives? directives = default,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Arguments = arguments;
-            Type = type;
-            Directives = directives;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Arguments = arguments;
+        Type = type;
+        Directives = directives;
+        Location = location;
+    }
+
+    public ArgumentsDefinition? Arguments { get; }
 
-        public StringValue? Description { get; }
-        public Name Name { get; }
-        public ArgumentsDefinition? Arguments { get; }
-        public TypeBase Type { get; }
-        public Directives? Directives { get; }
-        public NodeKind Kind => NodeKind.FieldDefinition;
-        public Location? Location { get; }
+    public StringValue? Description { get; }
+    public Directives? Directives { get; }
+    public Name Name { get; }
+    public TypeBase Type { get; }
+    public NodeKind Kind => NodeKind.FieldDefinition;
+    public Location? Location { get; }
 
-        public static implicit operator FieldDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseFieldDefinition();
-        }
+    public static implicit operator FieldDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseFieldDefinition();
+    }
 
-        public static implicit operator FieldDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseFieldDefinition();
-        }
+    public static implicit operator FieldDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseFieldDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/FieldsDefinition.cs b/src/graphql.language/Nodes/TypeSystem/FieldsDefinition.cs
index 196d23e4b..cac6ff153 100644
--- a/src/graphql.language/Nodes/TypeSystem/FieldsDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/FieldsDefinition.cs
@@ -1,21 +1,21 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class FieldsDefinition : CollectionNodeBase<FieldDefinition>
 {
-    public sealed class FieldsDefinition : CollectionNodeBase<FieldDefinition>
+    public FieldsDefinition(IReadOnlyList<FieldDefinition> items, in Location? location = default) : base(items,
+        in location)
     {
-        public FieldsDefinition(IReadOnlyList<FieldDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.FieldsDefinition;
+    public override NodeKind Kind => NodeKind.FieldsDefinition;
 
-        public static FieldsDefinition? From(IReadOnlyList<FieldDefinition>? fields)
-        {
-            if (fields == null)
-                return null;
+    public static FieldsDefinition? From(IReadOnlyList<FieldDefinition>? fields)
+    {
+        if (fields == null)
+            return null;
 
-            return new FieldsDefinition(fields);
-        }
+        return new FieldsDefinition(fields);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs b/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
index 5a33a8311..61067c79b 100644
--- a/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ImplementsInterfaces.cs
@@ -1,36 +1,36 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class ImplementsInterfaces : CollectionNodeBase<NamedType>
 {
-    public sealed class ImplementsInterfaces : CollectionNodeBase<NamedType>
+    public ImplementsInterfaces(IReadOnlyList<NamedType> items, in Location? location = default) : base(items,
+        in location)
     {
-        public ImplementsInterfaces(IReadOnlyList<NamedType> items, in Location? location = default) : base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.ImplementsInterfaces;
+    public override NodeKind Kind => NodeKind.ImplementsInterfaces;
 
-        public static ImplementsInterfaces? From(IReadOnlyList<NamedType>? interfaces)
-        {
-            if (interfaces == null)
-                return null;
+    public static ImplementsInterfaces? From(IReadOnlyList<NamedType>? interfaces)
+    {
+        if (interfaces == null)
+            return null;
 
-            return new ImplementsInterfaces(interfaces);
-        }
+        return new ImplementsInterfaces(interfaces);
+    }
 
-        public bool TryGet(Name interfaceName, [NotNullWhen(true)] out NamedType? namedType)
+    public bool TryGet(Name interfaceName, [NotNullWhen(true)] out NamedType? namedType)
+    {
+        foreach (var @interface in this)
         {
-            foreach (var @interface in this)
-            {
-                if (@interface.Name != interfaceName) continue;
-                
-                namedType = @interface;
-                return true;
-            }
-
-            namedType = null;
-            return false;
+            if (@interface.Name != interfaceName) continue;
+
+            namedType = @interface;
+            return true;
         }
+
+        namedType = null;
+        return false;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/InputFieldsDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputFieldsDefinition.cs
index bf3b2daa7..b4e6bd431 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputFieldsDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputFieldsDefinition.cs
@@ -1,21 +1,21 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class InputFieldsDefinition : CollectionNodeBase<InputValueDefinition>
 {
-    public sealed class InputFieldsDefinition: CollectionNodeBase<InputValueDefinition>
+    public InputFieldsDefinition(IReadOnlyList<InputValueDefinition> items, in Location? location = default) : base(
+        items, in location)
     {
-        public InputFieldsDefinition(IReadOnlyList<InputValueDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.InputFieldsDefinition;
+    public override NodeKind Kind => NodeKind.InputFieldsDefinition;
 
-        public static InputFieldsDefinition? From(IReadOnlyList<InputValueDefinition>? fields)
-        {
-            if (fields == null)
-                return null;
+    public static InputFieldsDefinition? From(IReadOnlyList<InputValueDefinition>? fields)
+    {
+        if (fields == null)
+            return null;
 
-            return new InputFieldsDefinition(fields);
-        }
+        return new InputFieldsDefinition(fields);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
index be02aaedc..fed03e0a0 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputObjectDefinition.cs
@@ -1,41 +1,40 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class InputObjectDefinition : TypeDefinition
 {
-    public sealed class InputObjectDefinition : TypeDefinition
+    public InputObjectDefinition(
+        StringValue? description,
+        in Name name,
+        Directives? directives,
+        InputFieldsDefinition? fields,
+        in Location? location = default)
     {
-        public override NodeKind Kind => NodeKind.InputObjectDefinition;
-        public InputObjectDefinition(
-            StringValue? description,
-            in Name name,
-            Directives? directives,
-            InputFieldsDefinition? fields,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Directives = directives;
-            Fields = fields;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Directives = directives;
+        Fields = fields;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public override Name Name { get; }
-        public override Directives? Directives { get; }
-        public InputFieldsDefinition? Fields { get; }
-        public override Location? Location { get; }
+    public StringValue? Description { get; }
+    public override Directives? Directives { get; }
+    public InputFieldsDefinition? Fields { get; }
+    public override NodeKind Kind => NodeKind.InputObjectDefinition;
+    public override Location? Location { get; }
+    public override Name Name { get; }
 
-        public static implicit operator InputObjectDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseInputObjectDefinition();
-        }
+    public static implicit operator InputObjectDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseInputObjectDefinition();
+    }
 
-        public static implicit operator InputObjectDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseInputObjectDefinition();
-        }
+    public static implicit operator InputObjectDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseInputObjectDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
index 571343150..1d6ddff33 100644
--- a/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InputValueDefinition.cs
@@ -1,49 +1,48 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class InputValueDefinition : INode
 {
-    public sealed class InputValueDefinition : INode
+    public InputValueDefinition(
+        StringValue? description,
+        in Name name,
+        TypeBase type,
+        DefaultValue? defaultValue = default,
+        Directives? directives = default,
+        in Location? location = default)
+    {
+        Description = description;
+        Name = name;
+        Type = type;
+        DefaultValue = defaultValue;
+        Directives = directives;
+        Location = location;
+    }
+
+    public DefaultValue? DefaultValue { get; }
+
+    public StringValue? Description { get; }
+
+    public Directives? Directives { get; }
+
+    public Name Name { get; }
+
+    public TypeBase Type { get; }
+    public NodeKind Kind => NodeKind.InputValueDefinition;
+
+    public Location? Location { get; }
+
+    public static implicit operator InputValueDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseInputValueDefinition();
+    }
+
+    public static implicit operator InputValueDefinition(in ReadOnlySpan<byte> value)
     {
-        public InputValueDefinition(
-            StringValue? description,
-            in Name name,
-            TypeBase type,
-            DefaultValue? defaultValue = default,
-            Directives? directives = default,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Type = type;
-            DefaultValue = defaultValue;
-            Directives = directives;
-            Location = location;
-        }
-
-        public DefaultValue? DefaultValue { get; }
-
-        public StringValue? Description { get; }
-
-        public Directives? Directives { get; }
-
-        public Name Name { get; }
-
-        public TypeBase Type { get; }
-        public NodeKind Kind => NodeKind.InputValueDefinition;
-
-        public Location? Location { get; }
-
-        public static implicit operator InputValueDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseInputValueDefinition();
-        }
-
-        public static implicit operator InputValueDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseInputValueDefinition();
-        }
+        var parser = Parser.Create(value);
+        return parser.ParseInputValueDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs b/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
index 115eee0ae..abc6f0cb6 100644
--- a/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/InterfaceDefinition.cs
@@ -1,45 +1,43 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class InterfaceDefinition : TypeDefinition
 {
-    public sealed class InterfaceDefinition : TypeDefinition
+    public InterfaceDefinition(
+        StringValue? description,
+        in Name name,
+        ImplementsInterfaces? interfaces,
+        Directives? directives,
+        FieldsDefinition? fields,
+        in Location? location = default)
     {
-        public override NodeKind Kind => NodeKind.InterfaceDefinition;
-
-        public InterfaceDefinition(
-            StringValue? description,
-            in Name name,
-            ImplementsInterfaces? interfaces,
-            Directives? directives,
-            FieldsDefinition? fields,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Interfaces = interfaces;
-            Directives = directives;
-            Fields = fields;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Interfaces = interfaces;
+        Directives = directives;
+        Fields = fields;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public override Name Name { get; }
-        public ImplementsInterfaces? Interfaces { get; }
-        public override Directives? Directives { get; }
-        public FieldsDefinition? Fields { get; }
-        public override Location? Location { get; }
+    public StringValue? Description { get; }
+    public override Directives? Directives { get; }
+    public FieldsDefinition? Fields { get; }
+    public ImplementsInterfaces? Interfaces { get; }
+    public override NodeKind Kind => NodeKind.InterfaceDefinition;
+    public override Location? Location { get; }
+    public override Name Name { get; }
 
-        public static implicit operator InterfaceDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseInterfaceDefinition();
-        }
+    public static implicit operator InterfaceDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseInterfaceDefinition();
+    }
 
-        public static implicit operator InterfaceDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseInterfaceDefinition();
-        }
+    public static implicit operator InterfaceDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseInterfaceDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
index 3354d750a..fc079954b 100644
--- a/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/ObjectDefinition.cs
@@ -1,45 +1,44 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class ObjectDefinition : TypeDefinition
 {
-    public sealed class ObjectDefinition : TypeDefinition
+    public ObjectDefinition(
+        StringValue? description,
+        in Name name,
+        ImplementsInterfaces? interfaces = default,
+        Directives? directives = default,
+        FieldsDefinition? fields = default,
+        in Location? location = default)
     {
-        public ObjectDefinition(
-            StringValue? description,
-            in Name name,
-            ImplementsInterfaces? interfaces = default,
-            Directives? directives = default,
-            FieldsDefinition? fields = default,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Interfaces = interfaces;
-            Directives = directives;
-            Fields = fields;
-            Location = location;
-        }
+        Description = description;
+        Name = name;
+        Interfaces = interfaces;
+        Directives = directives;
+        Fields = fields;
+        Location = location;
+    }
 
-        public override NodeKind Kind => NodeKind.ObjectDefinition;
+    public StringValue? Description { get; }
+    public override Directives? Directives { get; }
+    public FieldsDefinition? Fields { get; }
+    public ImplementsInterfaces? Interfaces { get; }
 
-        public StringValue? Description { get; }
-        public override Name Name { get; }
-        public ImplementsInterfaces? Interfaces { get; }
-        public override Directives? Directives { get; }
-        public FieldsDefinition? Fields { get; }
-        public override Location? Location { get; }
+    public override NodeKind Kind => NodeKind.ObjectDefinition;
+    public override Location? Location { get; }
+    public override Name Name { get; }
 
-        public static implicit operator ObjectDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseObjectDefinition();
-        }
+    public static implicit operator ObjectDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseObjectDefinition();
+    }
 
-        public static implicit operator ObjectDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseObjectDefinition();
-        }
+    public static implicit operator ObjectDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseObjectDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinition.cs
index 7b44dc7c4..ca768cf2b 100644
--- a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinition.cs
@@ -1,23 +1,21 @@
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class RootOperationTypeDefinition : INode
 {
-    public sealed class RootOperationTypeDefinition : INode
+    public RootOperationTypeDefinition(
+        OperationType operationType,
+        NamedType namedType,
+        in Location? location = default)
     {
-        public OperationType OperationType { get; }
-
-        public NamedType NamedType { get; }
+        OperationType = operationType;
+        NamedType = namedType;
+        Location = location;
+    }
 
-        public RootOperationTypeDefinition(
-            OperationType operationType,
-            NamedType namedType,
-            in Location? location = default)
-        {
-            OperationType = operationType;
-            NamedType = namedType;
-            Location = location;
-        }
+    public NamedType NamedType { get; }
+    public OperationType OperationType { get; }
 
-        public NodeKind Kind => NodeKind.RootOperationTypeDefinition;
+    public NodeKind Kind => NodeKind.RootOperationTypeDefinition;
 
-        public Location? Location { get; }
-    }
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
index 572d51e78..57e8f0aeb 100644
--- a/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
+++ b/src/graphql.language/Nodes/TypeSystem/RootOperationTypeDefinitions.cs
@@ -1,18 +1,18 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class RootOperationTypeDefinitions : CollectionNodeBase<RootOperationTypeDefinition>
 {
-    public sealed class RootOperationTypeDefinitions: CollectionNodeBase<RootOperationTypeDefinition>
+    public RootOperationTypeDefinitions(IReadOnlyList<RootOperationTypeDefinition> items,
+        in Location? location = default) : base(items, in location)
     {
-        public RootOperationTypeDefinitions(IReadOnlyList<RootOperationTypeDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.RootOperationTypeDefinitions;
+    public override NodeKind Kind => NodeKind.RootOperationTypeDefinitions;
 
-        public static RootOperationTypeDefinitions From(IReadOnlyList<RootOperationTypeDefinition> operations)
-        {
-            return new RootOperationTypeDefinitions(operations);
-        }
+    public static RootOperationTypeDefinitions From(IReadOnlyList<RootOperationTypeDefinition> operations)
+    {
+        return new RootOperationTypeDefinitions(operations);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs b/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
index c497cfa11..be217cb57 100644
--- a/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/SchemaDefinition.cs
@@ -1,47 +1,45 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class SchemaDefinition : INode
 {
-    public sealed class SchemaDefinition: INode
+    public SchemaDefinition(
+        StringValue? description,
+        Directives? directives,
+        RootOperationTypeDefinitions operations,
+        in Location? location = default)
+    {
+        Description = description;
+        Directives = directives;
+        Operations = operations;
+        Location = location;
+    }
+
+    public StringValue? Description { get; }
+
+    public Directives? Directives { get; }
+
+    public RootOperationTypeDefinitions Operations { get; }
+    public NodeKind Kind => NodeKind.SchemaDefinition;
+
+    public Location? Location { get; }
+
+    public static implicit operator SchemaDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseSchemaDefinition();
+    }
+
+    public static implicit operator SchemaDefinition(ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseSchemaDefinition();
+    }
+
+    public override string ToString()
     {
-        public NodeKind Kind => NodeKind.SchemaDefinition;
-
-        public SchemaDefinition(
-            StringValue? description,
-            Directives? directives,
-            RootOperationTypeDefinitions operations,
-            in Location? location = default)
-        {
-            Description = description;
-            Directives = directives;
-            Operations = operations;
-            Location = location;
-        }
-
-        public StringValue? Description { get; }
-
-        public Directives? Directives { get; }
-
-        public RootOperationTypeDefinitions Operations { get; }
-
-        public Location? Location { get; }
-
-        public static implicit operator SchemaDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseSchemaDefinition();
-        }
-
-        public static implicit operator SchemaDefinition(ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseSchemaDefinition();
-        }
-
-        public override string ToString()
-        {
-            return Printer.Print(this);
-        }
+        return Printer.Print(this);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/SchemaExtension.cs b/src/graphql.language/Nodes/TypeSystem/SchemaExtension.cs
index b8fbb8593..06251a675 100644
--- a/src/graphql.language/Nodes/TypeSystem/SchemaExtension.cs
+++ b/src/graphql.language/Nodes/TypeSystem/SchemaExtension.cs
@@ -1,39 +1,37 @@
 using System;
-using System.Collections.Generic;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class SchemaExtension : INode
 {
-    public sealed class SchemaExtension: INode
+    public SchemaExtension(
+        StringValue? description,
+        Directives? directives,
+        RootOperationTypeDefinitions? operations,
+        in Location? location = default)
     {
-        public NodeKind Kind => NodeKind.SchemaExtension;
-        public SchemaExtension(
-            StringValue? description,
-            Directives? directives,
-            RootOperationTypeDefinitions? operations,
-            in Location? location = default)
-        {
-            Description = description;
-            Directives = directives;
-            Operations = operations;
-            Location = location;
-        }
+        Description = description;
+        Directives = directives;
+        Operations = operations;
+        Location = location;
+    }
 
-        public StringValue? Description { get; }
-        public Directives? Directives { get; }
-        public RootOperationTypeDefinitions? Operations { get; }
-        public Location? Location { get; }
+    public StringValue? Description { get; }
+    public Directives? Directives { get; }
+    public RootOperationTypeDefinitions? Operations { get; }
+    public NodeKind Kind => NodeKind.SchemaExtension;
+    public Location? Location { get; }
 
-        public static implicit operator SchemaExtension(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseSchemaExtension(hasExtend:true);
-        }
+    public static implicit operator SchemaExtension(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseSchemaExtension(true);
+    }
 
-        public static implicit operator SchemaExtension(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseSchemaExtension(hasExtend: true);
-        }
+    public static implicit operator SchemaExtension(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseSchemaExtension(true);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
index bf9a372df..18b1360f0 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeDefinition.cs
@@ -2,56 +2,54 @@
 using System.Diagnostics;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+[DebuggerDisplay("{Kind}", Name = "{Name}")]
+public abstract class TypeDefinition : INode, IEquatable<TypeDefinition>
 {
-    [DebuggerDisplay("{Kind}", Name = "{Name}")]
-    public abstract class TypeDefinition : INode, IEquatable<TypeDefinition>
+    public abstract Directives? Directives { get; }
+    public abstract Name Name { get; }
+
+    public bool Equals(TypeDefinition? other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return Name.Equals(other.Name) && Kind == other.Kind;
+    }
+
+    public abstract NodeKind Kind { get; }
+    public abstract Location? Location { get; }
+
+
+    public static implicit operator TypeDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseTypeDefinition();
+    }
+
+    public static implicit operator TypeDefinition(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseTypeDefinition();
+    }
+
+    public override bool Equals(object? obj)
+    {
+        return ReferenceEquals(this, obj) || obj is TypeDefinition other && Equals(other);
+    }
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine(Name, (int)Kind);
+    }
+
+    public static bool operator ==(TypeDefinition? left, TypeDefinition? right)
+    {
+        return Equals(left, right);
+    }
+
+    public static bool operator !=(TypeDefinition? left, TypeDefinition? right)
     {
-        public abstract Name Name { get; }
-
-        public abstract NodeKind Kind { get; }
-        public abstract Location? Location { get; }
-
-        public abstract Directives? Directives { get; }
-        
-
-        public static implicit operator TypeDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseTypeDefinition();
-        }
-
-        public static implicit operator TypeDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseTypeDefinition();
-        }
-
-        public bool Equals(TypeDefinition? other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Name.Equals(other.Name) && Kind == other.Kind;
-        }
-
-        public override bool Equals(object? obj)
-        {
-            return ReferenceEquals(this, obj) || obj is TypeDefinition other && Equals(other);
-        }
-
-        public override int GetHashCode()
-        {
-            return HashCode.Combine(Name, (int)Kind);
-        }
-
-        public static bool operator ==(TypeDefinition? left, TypeDefinition? right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(TypeDefinition? left, TypeDefinition? right)
-        {
-            return !Equals(left, right);
-        }
+        return !Equals(left, right);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs b/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
index 5a96b7ed0..5657dd738 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeExtension.cs
@@ -1,23 +1,22 @@
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class TypeExtension : INode
 {
-    public sealed class TypeExtension : INode
+    public TypeExtension(
+        TypeDefinition definition,
+        in Location? location = default)
     {
-        public TypeExtension(
-            TypeDefinition definition,
-            in Location? location = default)
-        {
-            Definition = definition;
-            Location = location;
-        }
+        Definition = definition;
+        Location = location;
+    }
 
-        public TypeDefinition Definition { get; }
+    public TypeDefinition Definition { get; }
 
-        public NodeKind ExtendedKind => Definition.Kind;
+    public NodeKind ExtendedKind => Definition.Kind;
 
-        public Name Name => Definition.Name;
-        
-        public NodeKind Kind => NodeKind.TypeExtension;
+    public Name Name => Definition.Name;
 
-        public Location? Location { get; }
-    }
+    public NodeKind Kind => NodeKind.TypeExtension;
+
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeSystemDirectiveLocations.cs b/src/graphql.language/Nodes/TypeSystem/TypeSystemDirectiveLocations.cs
index c95cb733e..abf9407d2 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeSystemDirectiveLocations.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeSystemDirectiveLocations.cs
@@ -1,34 +1,33 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public static class TypeSystemDirectiveLocations
 {
-    public static class TypeSystemDirectiveLocations
-    {
-        public const string SCHEMA = nameof(SCHEMA);
-        public const string SCALAR = nameof(SCALAR);
-        public const string OBJECT = nameof(OBJECT);
-        public const string FIELD_DEFINITION = nameof(FIELD_DEFINITION);
-        public const string ARGUMENT_DEFINITION = nameof(ARGUMENT_DEFINITION);
-        public const string INTERFACE = nameof(INTERFACE);
-        public const string UNION = nameof(UNION);
-        public const string ENUM = nameof(ENUM);
-        public const string ENUM_VALUE = nameof(ENUM_VALUE);
-        public const string INPUT_OBJECT = nameof(INPUT_OBJECT);
-        public const string INPUT_FIELD_DEFINITION = nameof(INPUT_FIELD_DEFINITION);
+    public const string SCHEMA = nameof(SCHEMA);
+    public const string SCALAR = nameof(SCALAR);
+    public const string OBJECT = nameof(OBJECT);
+    public const string FIELD_DEFINITION = nameof(FIELD_DEFINITION);
+    public const string ARGUMENT_DEFINITION = nameof(ARGUMENT_DEFINITION);
+    public const string INTERFACE = nameof(INTERFACE);
+    public const string UNION = nameof(UNION);
+    public const string ENUM = nameof(ENUM);
+    public const string ENUM_VALUE = nameof(ENUM_VALUE);
+    public const string INPUT_OBJECT = nameof(INPUT_OBJECT);
+    public const string INPUT_FIELD_DEFINITION = nameof(INPUT_FIELD_DEFINITION);
 
-        public static IReadOnlyList<string> All = new List<string>
-        {
-            SCHEMA,
-            SCALAR,
-            OBJECT,
-            FIELD_DEFINITION,
-            ARGUMENT_DEFINITION,
-            INTERFACE,
-            UNION,
-            ENUM,
-            ENUM_VALUE,
-            INPUT_OBJECT,
-            INPUT_FIELD_DEFINITION
-        };
-    }
+    public static IReadOnlyList<string> All = new List<string>
+    {
+        SCHEMA,
+        SCALAR,
+        OBJECT,
+        FIELD_DEFINITION,
+        ARGUMENT_DEFINITION,
+        INTERFACE,
+        UNION,
+        ENUM,
+        ENUM_VALUE,
+        INPUT_OBJECT,
+        INPUT_FIELD_DEFINITION
+    };
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs b/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
index 9bb427dbc..c3fe50c23 100644
--- a/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
+++ b/src/graphql.language/Nodes/TypeSystem/TypeSystemDocument.cs
@@ -2,52 +2,51 @@
 using System.Collections.Generic;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class TypeSystemDocument : INode
 {
-    public sealed class TypeSystemDocument : INode
+    public TypeSystemDocument(
+        IReadOnlyList<SchemaDefinition>? schemaDefinitions,
+        IReadOnlyList<TypeDefinition>? typeDefinitions,
+        IReadOnlyList<DirectiveDefinition>? directiveDefinitions,
+        IReadOnlyList<SchemaExtension>? schemaExtensions = default,
+        IReadOnlyList<TypeExtension>? typeExtensions = default,
+        IReadOnlyList<Import>? imports = default)
+    {
+        SchemaDefinitions = schemaDefinitions;
+        TypeDefinitions = typeDefinitions;
+        DirectiveDefinitions = directiveDefinitions;
+        SchemaExtensions = schemaExtensions;
+        TypeExtensions = typeExtensions;
+        Imports = imports;
+    }
+
+    public IReadOnlyList<DirectiveDefinition>? DirectiveDefinitions { get; }
+
+    public IReadOnlyList<Import>? Imports { get; }
+
+    public IReadOnlyList<SchemaDefinition>? SchemaDefinitions { get; }
+
+    public IReadOnlyList<SchemaExtension>? SchemaExtensions { get; }
+
+    public IReadOnlyList<TypeDefinition>? TypeDefinitions { get; }
+
+    public IReadOnlyList<TypeExtension>? TypeExtensions { get; }
+
+    public NodeKind Kind => NodeKind.TypeSystemDocument;
+
+    public Location? Location => null;
+
+    public static implicit operator TypeSystemDocument(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseTypeSystemDocument();
+    }
+
+    public static implicit operator TypeSystemDocument(in ReadOnlySpan<byte> value)
     {
-        public TypeSystemDocument(
-            IReadOnlyList<SchemaDefinition>? schemaDefinitions,
-            IReadOnlyList<TypeDefinition>? typeDefinitions,
-            IReadOnlyList<DirectiveDefinition>? directiveDefinitions,
-            IReadOnlyList<SchemaExtension>? schemaExtensions = default,
-            IReadOnlyList<TypeExtension>? typeExtensions = default,
-            IReadOnlyList<Import>? imports = default)
-        {
-            SchemaDefinitions = schemaDefinitions;
-            TypeDefinitions = typeDefinitions;
-            DirectiveDefinitions = directiveDefinitions;
-            SchemaExtensions = schemaExtensions;
-            TypeExtensions = typeExtensions;
-            Imports = imports;
-        }
-
-        public IReadOnlyList<DirectiveDefinition>? DirectiveDefinitions { get; }
-
-        public IReadOnlyList<SchemaDefinition>? SchemaDefinitions { get; }
-        
-        public IReadOnlyList<SchemaExtension>? SchemaExtensions { get; }
-        
-        public IReadOnlyList<TypeDefinition>? TypeDefinitions { get; }
-        
-        public IReadOnlyList<TypeExtension>? TypeExtensions { get; }
-        
-        public IReadOnlyList<Import>? Imports { get; }
-
-        public NodeKind Kind => NodeKind.TypeSystemDocument;
-        
-        public Location? Location => null;
-
-        public static implicit operator TypeSystemDocument(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseTypeSystemDocument();
-        }
-
-        public static implicit operator TypeSystemDocument(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseTypeSystemDocument();
-        }
+        var parser = Parser.Create(value);
+        return parser.ParseTypeSystemDocument();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs b/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
index 8a42bb708..96c9714d1 100644
--- a/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
+++ b/src/graphql.language/Nodes/TypeSystem/UnionDefinition.cs
@@ -1,45 +1,44 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class UnionDefinition : TypeDefinition
 {
-    public sealed class UnionDefinition : TypeDefinition
+    public UnionDefinition(
+        StringValue? description,
+        in Name name,
+        Directives? directives,
+        UnionMemberTypes? members,
+        in Location? location = default)
+    {
+        Description = description;
+        Name = name;
+        Directives = directives;
+        Members = members;
+        Location = location;
+    }
+
+    public StringValue? Description { get; }
+
+    public override Directives? Directives { get; }
+    public override NodeKind Kind => NodeKind.UnionDefinition;
+
+    public override Location? Location { get; }
+
+    public UnionMemberTypes? Members { get; }
+
+    public override Name Name { get; }
+
+    public static implicit operator UnionDefinition(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseUnionDefinition();
+    }
+
+    public static implicit operator UnionDefinition(in ReadOnlySpan<byte> value)
     {
-        public override NodeKind Kind => NodeKind.UnionDefinition;
-        public UnionDefinition(
-            StringValue? description,
-            in Name name,
-            Directives? directives,
-            UnionMemberTypes? members,
-            in Location? location = default)
-        {
-            Description = description;
-            Name = name;
-            Directives = directives;
-            Members = members;
-            Location = location;
-        }
-
-        public StringValue? Description { get; }
-
-        public override Name Name { get; }
-
-        public override Directives? Directives { get; }
-
-        public UnionMemberTypes? Members { get; }
-
-        public override Location? Location { get; }
-
-        public static implicit operator UnionDefinition(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseUnionDefinition();
-        }
-
-        public static implicit operator UnionDefinition(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseUnionDefinition();
-        }
+        var parser = Parser.Create(value);
+        return parser.ParseUnionDefinition();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/TypeSystem/UnionMemberTypes.cs b/src/graphql.language/Nodes/TypeSystem/UnionMemberTypes.cs
index 9b5e038d1..179d22d12 100644
--- a/src/graphql.language/Nodes/TypeSystem/UnionMemberTypes.cs
+++ b/src/graphql.language/Nodes/TypeSystem/UnionMemberTypes.cs
@@ -1,21 +1,20 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes.TypeSystem
+namespace Tanka.GraphQL.Language.Nodes.TypeSystem;
+
+public sealed class UnionMemberTypes : CollectionNodeBase<NamedType>
 {
-    public sealed class UnionMemberTypes : CollectionNodeBase<NamedType>
+    public UnionMemberTypes(IReadOnlyList<NamedType> items, in Location? location = default) : base(items, in location)
     {
-        public UnionMemberTypes(IReadOnlyList<NamedType> items, in Location? location = default) : base(items, in location)
-        {
-        }
+    }
 
-        public override NodeKind Kind => NodeKind.UnionMemberTypes;
+    public override NodeKind Kind => NodeKind.UnionMemberTypes;
 
-        public static UnionMemberTypes? From(IReadOnlyList<NamedType>? members)
-        {
-            if (members == null)
-                return null;
+    public static UnionMemberTypes? From(IReadOnlyList<NamedType>? members)
+    {
+        if (members == null)
+            return null;
 
-            return new UnionMemberTypes(members);
-        }
+        return new UnionMemberTypes(members);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/ValueBase.cs b/src/graphql.language/Nodes/ValueBase.cs
index 76ce8664b..5e225b65c 100644
--- a/src/graphql.language/Nodes/ValueBase.cs
+++ b/src/graphql.language/Nodes/ValueBase.cs
@@ -1,23 +1,22 @@
 using System;
 using System.Text;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public abstract class ValueBase : INode
 {
-    public abstract class ValueBase: INode
-    {
-        public static implicit operator ValueBase(string value)
-        {
-            var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
-            return parser.ParseValue(true);
-        }
+    public abstract NodeKind Kind { get; }
+    public abstract Location? Location { get; }
 
-        public static implicit operator ValueBase(in ReadOnlySpan<byte> value)
-        {
-            var parser = Parser.Create(value);
-            return parser.ParseValue(true);
-        }
+    public static implicit operator ValueBase(string value)
+    {
+        var parser = Parser.Create(Encoding.UTF8.GetBytes(value));
+        return parser.ParseValue(true);
+    }
 
-        public abstract NodeKind Kind { get; }
-        public abstract Location? Location { get; }
+    public static implicit operator ValueBase(in ReadOnlySpan<byte> value)
+    {
+        var parser = Parser.Create(value);
+        return parser.ParseValue(true);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/Variable.cs b/src/graphql.language/Nodes/Variable.cs
index d2be3fed1..4f32de930 100644
--- a/src/graphql.language/Nodes/Variable.cs
+++ b/src/graphql.language/Nodes/Variable.cs
@@ -1,17 +1,17 @@
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class Variable : ValueBase, INode
 {
-    public sealed class Variable : ValueBase, INode
-    {
-        public override NodeKind Kind => NodeKind.Variable;
-        public override Location? Location {get;}
-        public readonly Name Name;
+    public readonly Name Name;
 
-        public Variable(
-            in Name name,
-            in Location? location = default)
-        {
-            Name = name;
-            Location = location;
-        }
+    public Variable(
+        in Name name,
+        in Location? location = default)
+    {
+        Name = name;
+        Location = location;
     }
+
+    public override NodeKind Kind => NodeKind.Variable;
+    public override Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/VariableDefinition.cs b/src/graphql.language/Nodes/VariableDefinition.cs
index ca292bdf8..7f2ff5a3b 100644
--- a/src/graphql.language/Nodes/VariableDefinition.cs
+++ b/src/graphql.language/Nodes/VariableDefinition.cs
@@ -1,27 +1,26 @@
-namespace Tanka.GraphQL.Language.Nodes
-{
-    public sealed class VariableDefinition : INode
-    {
-        public readonly DefaultValue? DefaultValue;
-        public readonly Directives? Directives;
-        public readonly TypeBase Type;
-        public readonly Variable Variable;
+namespace Tanka.GraphQL.Language.Nodes;
 
-        public VariableDefinition(
-            Variable variable,
-            TypeBase type,
-            DefaultValue? defaultValue,
-            Directives? directives,
-            in Location? location = default)
-        {
-            Variable = variable;
-            Type = type;
-            DefaultValue = defaultValue;
-            Directives = directives;
-            Location = location;
-        }
+public sealed class VariableDefinition : INode
+{
+    public readonly DefaultValue? DefaultValue;
+    public readonly Directives? Directives;
+    public readonly TypeBase Type;
+    public readonly Variable Variable;
 
-        public NodeKind Kind => NodeKind.VariableDefinition;
-        public Location? Location { get; }
+    public VariableDefinition(
+        Variable variable,
+        TypeBase type,
+        DefaultValue? defaultValue,
+        Directives? directives,
+        in Location? location = default)
+    {
+        Variable = variable;
+        Type = type;
+        DefaultValue = defaultValue;
+        Directives = directives;
+        Location = location;
     }
+
+    public NodeKind Kind => NodeKind.VariableDefinition;
+    public Location? Location { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Nodes/VariableDefinitions.cs b/src/graphql.language/Nodes/VariableDefinitions.cs
index 81d82cd83..b185a1cdd 100644
--- a/src/graphql.language/Nodes/VariableDefinitions.cs
+++ b/src/graphql.language/Nodes/VariableDefinitions.cs
@@ -1,13 +1,13 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Language.Nodes
+namespace Tanka.GraphQL.Language.Nodes;
+
+public sealed class VariableDefinitions : CollectionNodeBase<VariableDefinition>
 {
-    public sealed class VariableDefinitions : CollectionNodeBase<VariableDefinition>
+    public VariableDefinitions(IReadOnlyList<VariableDefinition> items, in Location? location = default) : base(items,
+        in location)
     {
-        public VariableDefinitions(IReadOnlyList<VariableDefinition> items, in Location? location = default) : base(items, in location)
-        {
-        }
-
-        public override NodeKind Kind => NodeKind.VariableDefinitions;
     }
+
+    public override NodeKind Kind => NodeKind.VariableDefinitions;
 }
\ No newline at end of file
diff --git a/src/graphql.language/Parser.TypeSystem.cs b/src/graphql.language/Parser.TypeSystem.cs
index 9164a52c2..0a7728d3a 100644
--- a/src/graphql.language/Parser.TypeSystem.cs
+++ b/src/graphql.language/Parser.TypeSystem.cs
@@ -5,804 +5,796 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public ref partial struct Parser
 {
-    public ref partial struct Parser
+    public TypeSystemDocument ParseTypeSystemDocument()
     {
-        public TypeSystemDocument ParseTypeSystemDocument()
-        {
-            var schemaDefinitions = new List<SchemaDefinition>();
-            var typeDefinitions = new List<TypeDefinition>();
-            var directiveDefinitions = new List<DirectiveDefinition>();
-            var schemaExtensions = new List<SchemaExtension>();
-            var typeExtensions = new List<TypeExtension>();
-            var imports = new List<Import>();
-
-            // check for tanka imports
-            if (_lexer.Kind == TokenKind.BlockStringValue)
-            {
-                if (TryParseTankaImports(out var foundImports))
-                {
-                    imports.AddRange(foundImports ?? Enumerable.Empty<Import>());
-                }
-            }
+        var schemaDefinitions = new List<SchemaDefinition>();
+        var typeDefinitions = new List<TypeDefinition>();
+        var directiveDefinitions = new List<DirectiveDefinition>();
+        var schemaExtensions = new List<SchemaExtension>();
+        var typeExtensions = new List<TypeExtension>();
+        var imports = new List<Import>();
 
-            while (_lexer.Kind != TokenKind.End)
+        // check for tanka imports
+        if (_lexer.Kind == TokenKind.BlockStringValue)
+            if (TryParseTankaImports(out var foundImports))
+                imports.AddRange(foundImports ?? Enumerable.Empty<Import>());
+
+        while (_lexer.Kind != TokenKind.End)
+        {
+            switch (_lexer.Kind)
             {
-                switch (_lexer.Kind)
-                {
-                    case TokenKind.StringValue:
-                    case TokenKind.BlockStringValue:
-                        // this will reserve the description
-                        PreParseOptionalDescription();
+                case TokenKind.StringValue:
+                case TokenKind.BlockStringValue:
+                    // this will reserve the description
+                    PreParseOptionalDescription();
+                    continue;
+                case TokenKind.Name:
+                    // type, scalar etc.
+                    if (Keywords.IsTypeDefinition(_lexer.Value))
+                    {
+                        typeDefinitions.Add(ParseTypeDefinition());
+                        continue;
+                    }
+                    // schema
+                    else if (Keywords.Schema.Match(_lexer.Value))
+                    {
+                        schemaDefinitions.Add(ParseSchemaDefinition());
+                        continue;
+                    }
+                    // directive
+                    else if (Keywords.Directive.Match(_lexer.Value))
+                    {
+                        directiveDefinitions.Add(ParseDirectiveDefinition());
                         continue;
-                    case TokenKind.Name:
-                        // type, scalar etc.
+                    }
+                    // extend
+                    else if (Keywords.Extend.Match(_lexer.Value))
+                    {
+                        _lexer.Advance();
+
+                        // types
                         if (Keywords.IsTypeDefinition(_lexer.Value))
                         {
-                            typeDefinitions.Add(ParseTypeDefinition());
-                            continue;
-                        }
-                        // schema
-                        else if (Keywords.Schema.Match(_lexer.Value))
-                        {
-                            schemaDefinitions.Add(ParseSchemaDefinition());
+                            typeExtensions.Add(ParseTypeExtension(false));
                             continue;
                         }
-                        // directive
-                        else if (Keywords.Directive.Match(_lexer.Value))
-                        {
-                            directiveDefinitions.Add(ParseDirectiveDefinition());
-                            continue;
-                        }
-                        // extend
-                        else if (Keywords.Extend.Match(_lexer.Value))
-                        {
-                            _lexer.Advance();
-
-                            // types
-                            if (Keywords.IsTypeDefinition(_lexer.Value))
-                            {
-                                typeExtensions.Add(ParseTypeExtension(hasExtend: false));
-                                continue;
-                            }
-                            else if (Keywords.Schema.Match(_lexer.Value))
-                            {
-                                schemaExtensions.Add(ParseSchemaExtension(hasExtend: false));
-                                continue;
-                            }
-                        }
-                        else if (Keywords.Import.Match(_lexer.Value))
+
+                        if (Keywords.Schema.Match(_lexer.Value))
                         {
-                            imports.Add(ParseTankaImport());
+                            schemaExtensions.Add(ParseSchemaExtension(false));
                             continue;
                         }
-                        break;
-                        
-                }
+                    }
+                    else if (Keywords.Import.Match(_lexer.Value))
+                    {
+                        imports.Add(ParseTankaImport());
+                        continue;
+                    }
 
-                throw new Exception($"Unexpected token {_lexer.Kind} at {_lexer.Line}:{_lexer.Column}");
+                    break;
             }
 
-            return new TypeSystemDocument(
-                schemaDefinitions,
-                typeDefinitions,
-                directiveDefinitions,
-                schemaExtensions,
-                typeExtensions,
-                imports);
+            throw new Exception($"Unexpected token {_lexer.Kind} at {_lexer.Line}:{_lexer.Column}");
         }
 
-        public Import ParseTankaImport()
-        {
-            /* """
-             * tanka_import Types[]? from From
-             * """
-             */
+        return new TypeSystemDocument(
+            schemaDefinitions,
+            typeDefinitions,
+            directiveDefinitions,
+            schemaExtensions,
+            typeExtensions,
+            imports);
+    }
 
-            /* From: StringValue */
+    public Import ParseTankaImport()
+    {
+        /* """
+         * tanka_import Types[]? from From
+         * """
+         */
 
-            /* ex. tanka_import from "./types/person" */
-            /* ex. tanka_import Person from "./types/person" */
+        /* From: StringValue */
 
-            Ensure(TokenKind.BlockStringValue);
-            var blockStringValue = _lexer.Value;
+        /* ex. tanka_import from "./types/person" */
+        /* ex. tanka_import Person from "./types/person" */
 
-            var importParser = Parser.Create(blockStringValue);
-            var import = importParser.ParseTankaImportInternal();
-            Skip(TokenKind.BlockStringValue);
-            
-            return import;
-        }
+        Ensure(TokenKind.BlockStringValue);
+        var blockStringValue = _lexer.Value;
 
-        public bool TryParseTankaImports(out IReadOnlyList<Import>? imports)
-        {
-            if (_lexer.Kind != TokenKind.BlockStringValue)
-            {
-                imports = null;
-                return false;
-            }
+        var importParser = Create(blockStringValue);
+        var import = importParser.ParseTankaImportInternal();
+        Skip(TokenKind.BlockStringValue);
 
-            var blockStringValue = _lexer.Value;
+        return import;
+    }
 
-            var importParser = Parser.Create(blockStringValue);
+    public bool TryParseTankaImports(out IReadOnlyList<Import>? imports)
+    {
+        if (_lexer.Kind != TokenKind.BlockStringValue)
+        {
+            imports = null;
+            return false;
+        }
 
-            if (!Keywords.Import.Match(importParser._lexer.Value))
-            {
-                imports = null;
-                return false;
-            }
+        var blockStringValue = _lexer.Value;
 
-            var _imports = new List<Import>();
-            while (Keywords.Import.Match(importParser._lexer.Value))
-            {
-                var import = importParser.ParseTankaImportInternal();
-                _imports.Add(import);
-            }
+        var importParser = Create(blockStringValue);
 
-            Skip(TokenKind.BlockStringValue);
-            imports = _imports;
-            return true;
+        if (!Keywords.Import.Match(importParser._lexer.Value))
+        {
+            imports = null;
+            return false;
         }
 
-        private Import ParseTankaImportInternal()
+        var _imports = new List<Import>();
+        while (Keywords.Import.Match(importParser._lexer.Value))
         {
-            var location = SkipKeyword(Keywords.Import.Span);
+            var import = importParser.ParseTankaImportInternal();
+            _imports.Add(import);
+        }
 
-            var types = new List<Name>();
-            if (!Keywords.From.Match(_lexer.Value))
-            {
-                // types
-                while (!Keywords.From.Match(_lexer.Value) && _lexer.Kind == TokenKind.Name)
-                {
-                    types.Add(ParseName());
-                }
-            }
+        Skip(TokenKind.BlockStringValue);
+        imports = _imports;
+        return true;
+    }
 
-            // from
-            SkipKeyword(Keywords.From.Span);
+    private Import ParseTankaImportInternal()
+    {
+        var location = SkipKeyword(Keywords.Import.Span);
 
-            // from
-            var from = ParseStringValue();
+        var types = new List<Name>();
+        if (!Keywords.From.Match(_lexer.Value))
+            // types
+            while (!Keywords.From.Match(_lexer.Value) && _lexer.Kind == TokenKind.Name)
+                types.Add(ParseName());
 
-            return new Import(
-                types.Any() ? types : null,
-                from,
-                location);
-        }
+        // from
+        SkipKeyword(Keywords.From.Span);
 
-        public TypeDefinition ParseTypeDefinition()
-        {
-            if (Keywords.Scalar.Match(_lexer.Value))
-                return ParseScalarDefinition();
+        // from
+        var from = ParseStringValue();
 
-            if (Keywords.Type.Match(_lexer.Value))
-                return ParseObjectDefinition();
+        return new Import(
+            types.Any() ? types : null,
+            from,
+            location);
+    }
 
-            if (Keywords.Interface.Match(_lexer.Value))
-                return ParseInterfaceDefinition();
+    public TypeDefinition ParseTypeDefinition()
+    {
+        if (Keywords.Scalar.Match(_lexer.Value))
+            return ParseScalarDefinition();
 
-            if (Keywords.Union.Match(_lexer.Value))
-                return ParseUnionDefinition();
+        if (Keywords.Type.Match(_lexer.Value))
+            return ParseObjectDefinition();
 
-            if (Keywords.Enum.Match(_lexer.Value))
-                return ParseEnumDefinition();
+        if (Keywords.Interface.Match(_lexer.Value))
+            return ParseInterfaceDefinition();
 
-            if (Keywords.Input.Match(_lexer.Value))
-                return ParseInputObjectDefinition();
+        if (Keywords.Union.Match(_lexer.Value))
+            return ParseUnionDefinition();
 
-            throw new Exception(
-                $"Unexpected type definition :'{Encoding.UTF8.GetString(_lexer.Value)}'.");
-        }
+        if (Keywords.Enum.Match(_lexer.Value))
+            return ParseEnumDefinition();
 
-        public TypeExtension ParseTypeExtension(bool hasExtend = true)
-        {
-            if (Keywords.Scalar.Match(_lexer.Value))
-                return ParseScalarExtension(hasExtend);
+        if (Keywords.Input.Match(_lexer.Value))
+            return ParseInputObjectDefinition();
 
-            if (Keywords.Type.Match(_lexer.Value))
-                return ParseObjectExtension(hasExtend);
+        throw new Exception(
+            $"Unexpected type definition :'{Encoding.UTF8.GetString(_lexer.Value)}'.");
+    }
 
-            if (Keywords.Interface.Match(_lexer.Value))
-                return ParseInterfaceExtension(hasExtend);
+    public TypeExtension ParseTypeExtension(bool hasExtend = true)
+    {
+        if (Keywords.Scalar.Match(_lexer.Value))
+            return ParseScalarExtension(hasExtend);
 
-            if (Keywords.Union.Match(_lexer.Value))
-                return ParseUnionExtension(hasExtend);
+        if (Keywords.Type.Match(_lexer.Value))
+            return ParseObjectExtension(hasExtend);
 
-            if (Keywords.Enum.Match(_lexer.Value))
-                return ParseEnumExtension(hasExtend);
+        if (Keywords.Interface.Match(_lexer.Value))
+            return ParseInterfaceExtension(hasExtend);
 
-            if (Keywords.Input.Match(_lexer.Value))
-                return ParseInputObjectExtension(hasExtend);
+        if (Keywords.Union.Match(_lexer.Value))
+            return ParseUnionExtension(hasExtend);
 
-            throw new Exception(
-                $"Unexpected type definition :'{Encoding.UTF8.GetString(_lexer.Value)}'.");
-        }
+        if (Keywords.Enum.Match(_lexer.Value))
+            return ParseEnumExtension(hasExtend);
 
-        public SchemaDefinition ParseSchemaDefinition()
-        {
-            /* Description? schema Directives? { RootOperationTypeDefinition[] } */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Schema.Span);
-            var directives = ParseOptionalDirectives(true);
-            var operations = ParseRootOperationDefinitions();
-
-            return new SchemaDefinition(
-                description,
-                directives,
-                operations,
-                location);
-        }
+        if (Keywords.Input.Match(_lexer.Value))
+            return ParseInputObjectExtension(hasExtend);
 
-        public SchemaExtension ParseSchemaExtension(bool hasExtend)
-        {
-            /* Description? extend schema Directives? { RootOperationTypeDefinition[] } */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Schema.Span);
-            var directives = ParseOptionalDirectives(true);
-            var operations = ParseOptionalRootOperationDefinitions();
-
-            return new SchemaExtension(
-                description,
-                directives,
-                operations,
-                location);
-        }
+        throw new Exception(
+            $"Unexpected type definition :'{Encoding.UTF8.GetString(_lexer.Value)}'.");
+    }
 
-        public RootOperationTypeDefinitions? ParseOptionalRootOperationDefinitions()
-        {
-            if (_lexer.Kind != TokenKind.LeftBrace)
-                return null;
+    public SchemaDefinition ParseSchemaDefinition()
+    {
+        /* Description? schema Directives? { RootOperationTypeDefinition[] } */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Schema.Span);
+        var directives = ParseOptionalDirectives(true);
+        var operations = ParseRootOperationDefinitions();
+
+        return new SchemaDefinition(
+            description,
+            directives,
+            operations,
+            location);
+    }
 
-            return ParseRootOperationDefinitions();
-        }
+    public SchemaExtension ParseSchemaExtension(bool hasExtend)
+    {
+        /* Description? extend schema Directives? { RootOperationTypeDefinition[] } */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Schema.Span);
+        var directives = ParseOptionalDirectives(true);
+        var operations = ParseOptionalRootOperationDefinitions();
+
+        return new SchemaExtension(
+            description,
+            directives,
+            operations,
+            location);
+    }
 
-        public RootOperationTypeDefinitions ParseRootOperationDefinitions()
-        {
-            var location = Skip(TokenKind.LeftBrace);
+    public RootOperationTypeDefinitions? ParseOptionalRootOperationDefinitions()
+    {
+        if (_lexer.Kind != TokenKind.LeftBrace)
+            return null;
 
-            var operations = new List<RootOperationTypeDefinition>();
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                /* OperationType: NamedType */
-                if (!Keywords.IsOperation(_lexer.Value, out var operation))
-                    throw new Exception(
-                        $"Unexpected operation type: '{Encoding.UTF8.GetString(_lexer.Value)}'.");
-
-                Skip(TokenKind.Name);
-                Skip(TokenKind.Colon);
-                var namedType = ParseNamedType();
-                operations.Add(new RootOperationTypeDefinition(operation, namedType));
-            }
+        return ParseRootOperationDefinitions();
+    }
 
-            Skip(TokenKind.RightBrace);
-            return new RootOperationTypeDefinitions(operations, location);
-        }
+    public RootOperationTypeDefinitions ParseRootOperationDefinitions()
+    {
+        var location = Skip(TokenKind.LeftBrace);
 
-        public DirectiveDefinition ParseDirectiveDefinition()
+        var operations = new List<RootOperationTypeDefinition>();
+        while (_lexer.Kind != TokenKind.RightBrace)
         {
-            /* Description? directive @Name ArgumentsDefinition[]? repeatable? on DirectiveLocations*/
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
+            /* OperationType: NamedType */
+            if (!Keywords.IsOperation(_lexer.Value, out var operation))
+                throw new Exception(
+                    $"Unexpected operation type: '{Encoding.UTF8.GetString(_lexer.Value)}'.");
 
-            // skip: directive
-            SkipKeyword(Keywords.Directive.Span);
+            Skip(TokenKind.Name);
+            Skip(TokenKind.Colon);
+            var namedType = ParseNamedType();
+            operations.Add(new RootOperationTypeDefinition(operation, namedType));
+        }
 
-            // skip: @
-            Skip(TokenKind.At);
+        Skip(TokenKind.RightBrace);
+        return new RootOperationTypeDefinitions(operations, location);
+    }
 
-            // name
-            var name = ParseName();
-            var argumentDefinitions = ParseOptionalArgumentDefinitions();
+    public DirectiveDefinition ParseDirectiveDefinition()
+    {
+        /* Description? directive @Name ArgumentsDefinition[]? repeatable? on DirectiveLocations*/
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
 
-            // repeatable?
-            var isRepeatable = false;
-            if (Keywords.IsRepeatable(_lexer.Value))
-            {
-                isRepeatable = true;
-                Skip(TokenKind.Name);
-            }
+        // skip: directive
+        SkipKeyword(Keywords.Directive.Span);
 
-            // locations
-            var directiveLocations = ParseDirectiveLocations();
+        // skip: @
+        Skip(TokenKind.At);
 
-            return new DirectiveDefinition(
-                description,
-                name,
-                argumentDefinitions,
-                isRepeatable,
-                directiveLocations,
-                location);
-        }
+        // name
+        var name = ParseName();
+        var argumentDefinitions = ParseOptionalArgumentDefinitions();
 
-        public IReadOnlyList<string> ParseDirectiveLocations()
+        // repeatable?
+        var isRepeatable = false;
+        if (Keywords.IsRepeatable(_lexer.Value))
         {
-            /*
-            on DirectiveLocations | DirectiveLocation
-            on |? DirectiveLocation 
-            */
+            isRepeatable = true;
+            Skip(TokenKind.Name);
+        }
 
-            SkipKeyword(Keywords.On.Span);
+        // locations
+        var directiveLocations = ParseDirectiveLocations();
 
-            if (_lexer.Kind == TokenKind.Pipe)
-                _lexer.Advance();
+        return new DirectiveDefinition(
+            description,
+            name,
+            argumentDefinitions,
+            isRepeatable,
+            directiveLocations,
+            location);
+    }
 
-            var locations = new List<string>(1);
-            while (_lexer.Kind == TokenKind.Name)
-            {
-                var location = Encoding.UTF8.GetString(_lexer.Value);
+    public IReadOnlyList<string> ParseDirectiveLocations()
+    {
+        /*
+        on DirectiveLocations | DirectiveLocation
+        on |? DirectiveLocation 
+        */
 
-                var isValid = ExecutableDirectiveLocations.All.Contains(location)
-                              || TypeSystemDirectiveLocations.All.Contains(location);
+        SkipKeyword(Keywords.On.Span);
 
-                if (!isValid)
-                    break;
+        if (_lexer.Kind == TokenKind.Pipe)
+            _lexer.Advance();
 
-                _lexer.Advance();
-                locations.Add(location);
+        var locations = new List<string>(1);
+        while (_lexer.Kind == TokenKind.Name)
+        {
+            var location = Encoding.UTF8.GetString(_lexer.Value);
 
-                // skip pipe
-                if (_lexer.Kind == TokenKind.Pipe)
-                    _lexer.Advance();
-                else
-                    break;
-            }
+            var isValid = ExecutableDirectiveLocations.All.Contains(location)
+                          || TypeSystemDirectiveLocations.All.Contains(location);
 
-            return locations;
-        }
+            if (!isValid)
+                break;
 
-        public ArgumentsDefinition? ParseOptionalArgumentDefinitions()
-        {
-            if (_lexer.Kind != TokenKind.LeftParenthesis)
-                return null;
-
-            /* (InputValueDefinition[]) */
-            Skip(TokenKind.LeftParenthesis);
-            var definitions = new List<InputValueDefinition>();
-            while (_lexer.Kind != TokenKind.RightParenthesis)
-            {
-                var definition = ParseInputValueDefinition();
-                definitions.Add(definition);
-            }
+            _lexer.Advance();
+            locations.Add(location);
 
-            Skip(TokenKind.RightParenthesis);
-            return new ArgumentsDefinition(definitions);
+            // skip pipe
+            if (_lexer.Kind == TokenKind.Pipe)
+                _lexer.Advance();
+            else
+                break;
         }
 
-        public InputValueDefinition ParseInputValueDefinition()
-        {
-            /* Description? Name: Type DefaultValue? Directives? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            var name = ParseName();
-            Skip(TokenKind.Colon);
-            var type = ParseType();
-            var defaultValue = ParseOptionalDefaultValue();
-            var directives = ParseOptionalDirectives(true);
+        return locations;
+    }
 
-            return new InputValueDefinition(
-                description,
-                name,
-                type,
-                defaultValue,
-                directives,
-                location);
-        }
+    public ArgumentsDefinition? ParseOptionalArgumentDefinitions()
+    {
+        if (_lexer.Kind != TokenKind.LeftParenthesis)
+            return null;
 
-        public ScalarDefinition ParseScalarDefinition()
+        /* (InputValueDefinition[]) */
+        Skip(TokenKind.LeftParenthesis);
+        var definitions = new List<InputValueDefinition>();
+        while (_lexer.Kind != TokenKind.RightParenthesis)
         {
-            /* Description? scalar Name Directives? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Scalar.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-
-            return new ScalarDefinition(
-                description,
-                name,
-                directives,
-                location);
+            var definition = ParseInputValueDefinition();
+            definitions.Add(definition);
         }
 
-        public TypeExtension ParseScalarExtension(bool hasExtend = true)
-        {
-            /* Description? extend scalar Name Directives? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Scalar.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-
-            return new TypeExtension(new ScalarDefinition(
+        Skip(TokenKind.RightParenthesis);
+        return new ArgumentsDefinition(definitions);
+    }
+
+    public InputValueDefinition ParseInputValueDefinition()
+    {
+        /* Description? Name: Type DefaultValue? Directives? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        var name = ParseName();
+        Skip(TokenKind.Colon);
+        var type = ParseType();
+        var defaultValue = ParseOptionalDefaultValue();
+        var directives = ParseOptionalDirectives(true);
+
+        return new InputValueDefinition(
+            description,
+            name,
+            type,
+            defaultValue,
+            directives,
+            location);
+    }
+
+    public ScalarDefinition ParseScalarDefinition()
+    {
+        /* Description? scalar Name Directives? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Scalar.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+
+        return new ScalarDefinition(
+            description,
+            name,
+            directives,
+            location);
+    }
+
+    public TypeExtension ParseScalarExtension(bool hasExtend = true)
+    {
+        /* Description? extend scalar Name Directives? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Scalar.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+
+        return new TypeExtension(new ScalarDefinition(
                 description,
                 name,
                 directives,
                 location),
-                location);
-        }
+            location);
+    }
 
-        public ObjectDefinition ParseObjectDefinition()
-        {
-            /* Description? type Name ImplementsInterfaces? Directives? FieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Type.Span);
-            var name = ParseName();
-            var interfaces = ParseOptionalImplementsInterfaces();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalFieldDefinitions();
-
-            return new ObjectDefinition(
-                description,
-                name,
-                interfaces,
-                directives,
-                fields,
-                location);
-        }
+    public ObjectDefinition ParseObjectDefinition()
+    {
+        /* Description? type Name ImplementsInterfaces? Directives? FieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Type.Span);
+        var name = ParseName();
+        var interfaces = ParseOptionalImplementsInterfaces();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalFieldDefinitions();
+
+        return new ObjectDefinition(
+            description,
+            name,
+            interfaces,
+            directives,
+            fields,
+            location);
+    }
 
-        public TypeExtension ParseObjectExtension(bool hasExtend = true)
-        {
-            /* Description? extend type Name ImplementsInterfaces? Directives? FieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Type.Span);
-            var name = ParseName();
-            var interfaces = ParseOptionalImplementsInterfaces();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalFieldDefinitions();
-
-            return new TypeExtension(new ObjectDefinition(
+    public TypeExtension ParseObjectExtension(bool hasExtend = true)
+    {
+        /* Description? extend type Name ImplementsInterfaces? Directives? FieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Type.Span);
+        var name = ParseName();
+        var interfaces = ParseOptionalImplementsInterfaces();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalFieldDefinitions();
+
+        return new TypeExtension(new ObjectDefinition(
                 description,
                 name,
                 interfaces,
                 directives,
                 fields,
                 location),
-                location);
-        }
+            location);
+    }
 
-        public InterfaceDefinition ParseInterfaceDefinition()
-        {
-            /* Description interface Name ImplementsInterfaces? Directives? FieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Interface.Span);
-            var name = ParseName();
-            var interfaces = ParseOptionalImplementsInterfaces();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalFieldDefinitions();
-
-            return new InterfaceDefinition(
-                description,
-                name,
-                interfaces,
-                directives,
-                fields,
-                location);
-        }
+    public InterfaceDefinition ParseInterfaceDefinition()
+    {
+        /* Description interface Name ImplementsInterfaces? Directives? FieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Interface.Span);
+        var name = ParseName();
+        var interfaces = ParseOptionalImplementsInterfaces();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalFieldDefinitions();
+
+        return new InterfaceDefinition(
+            description,
+            name,
+            interfaces,
+            directives,
+            fields,
+            location);
+    }
 
-        public TypeExtension ParseInterfaceExtension(bool hasExtend = true)
-        {
-            /* Description extend interface Name ImplementsInterfaces? Directives? FieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Interface.Span);
-            var name = ParseName();
-            var interfaces = ParseOptionalImplementsInterfaces();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalFieldDefinitions();
-
-            return new TypeExtension(new InterfaceDefinition(
+    public TypeExtension ParseInterfaceExtension(bool hasExtend = true)
+    {
+        /* Description extend interface Name ImplementsInterfaces? Directives? FieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Interface.Span);
+        var name = ParseName();
+        var interfaces = ParseOptionalImplementsInterfaces();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalFieldDefinitions();
+
+        return new TypeExtension(new InterfaceDefinition(
                 description,
                 name,
                 interfaces,
                 directives,
                 fields,
                 location),
-                location);
-        }
+            location);
+    }
 
-        public UnionDefinition ParseUnionDefinition()
-        {
-            /* Description? union Name Directives? UnionMemberTypes? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Union.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var members = ParseOptionalUnionMembers();
-
-            return new UnionDefinition(
-                description,
-                name,
-                directives,
-                members,
-                location);
-        }
+    public UnionDefinition ParseUnionDefinition()
+    {
+        /* Description? union Name Directives? UnionMemberTypes? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Union.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var members = ParseOptionalUnionMembers();
+
+        return new UnionDefinition(
+            description,
+            name,
+            directives,
+            members,
+            location);
+    }
 
-        public TypeExtension ParseUnionExtension(bool hasExtend = true)
-        {
-            /* Description? extend union Name Directives? UnionMemberTypes? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Union.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var members = ParseOptionalUnionMembers();
-
-            return new TypeExtension(new UnionDefinition(
+    public TypeExtension ParseUnionExtension(bool hasExtend = true)
+    {
+        /* Description? extend union Name Directives? UnionMemberTypes? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Union.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var members = ParseOptionalUnionMembers();
+
+        return new TypeExtension(new UnionDefinition(
                 description,
                 name,
                 directives,
                 members,
                 location),
-                location);
-        }
+            location);
+    }
 
-        public EnumDefinition ParseEnumDefinition()
-        {
-            /* Description? enum Name Directives? EnumValuesDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Enum.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var values = ParseOptionalEnumValueDefinitions();
-
-            return new EnumDefinition(
-                description,
-                name,
-                directives,
-                values,
-                location);
-        }
+    public EnumDefinition ParseEnumDefinition()
+    {
+        /* Description? enum Name Directives? EnumValuesDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Enum.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var values = ParseOptionalEnumValueDefinitions();
+
+        return new EnumDefinition(
+            description,
+            name,
+            directives,
+            values,
+            location);
+    }
 
-        public TypeExtension ParseEnumExtension(bool hasExtend = true)
-        {
-            /* Description? extend enum Name Directives? EnumValuesDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Enum.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var values = ParseOptionalEnumValueDefinitions();
-
-            return new TypeExtension(new EnumDefinition(
+    public TypeExtension ParseEnumExtension(bool hasExtend = true)
+    {
+        /* Description? extend enum Name Directives? EnumValuesDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Enum.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var values = ParseOptionalEnumValueDefinitions();
+
+        return new TypeExtension(new EnumDefinition(
                 description,
                 name,
                 directives,
                 values,
                 location),
-                location);
-        }
-
-        public EnumValuesDefinition? ParseOptionalEnumValueDefinitions()
-        {
-            /* { EnumValueDefinition[] } */
-            if (_lexer.Kind != TokenKind.LeftBrace)
-                return null;
+            location);
+    }
 
-            Skip(TokenKind.LeftBrace);
+    public EnumValuesDefinition? ParseOptionalEnumValueDefinitions()
+    {
+        /* { EnumValueDefinition[] } */
+        if (_lexer.Kind != TokenKind.LeftBrace)
+            return null;
 
-            var values = new List<EnumValueDefinition>();
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                var value = ParseEnumValueDefinition();
-                values.Add(value);
-            }
+        Skip(TokenKind.LeftBrace);
 
-            Skip(TokenKind.RightBrace);
-            return new EnumValuesDefinition(values);
+        var values = new List<EnumValueDefinition>();
+        while (_lexer.Kind != TokenKind.RightBrace)
+        {
+            var value = ParseEnumValueDefinition();
+            values.Add(value);
         }
 
-        public EnumValueDefinition ParseEnumValueDefinition()
-        {
-            /* Description? EnumValue Directives? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            var value = ParseEnumValue();
-            var directives = ParseOptionalDirectives(true);
+        Skip(TokenKind.RightBrace);
+        return new EnumValuesDefinition(values);
+    }
 
-            return new EnumValueDefinition(
-                description,
-                value,
-                directives,
-                location);
-        }
+    public EnumValueDefinition ParseEnumValueDefinition()
+    {
+        /* Description? EnumValue Directives? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        var value = ParseEnumValue();
+        var directives = ParseOptionalDirectives(true);
+
+        return new EnumValueDefinition(
+            description,
+            value,
+            directives,
+            location);
+    }
 
-        public InputObjectDefinition ParseInputObjectDefinition()
-        {
-            /* Description? input Name Directives? InputFieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Input.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalInputObjectFields();
-
-            return new InputObjectDefinition(
-                description,
-                name,
-                directives,
-                fields,
-                location);
-        }
+    public InputObjectDefinition ParseInputObjectDefinition()
+    {
+        /* Description? input Name Directives? InputFieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Input.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalInputObjectFields();
+
+        return new InputObjectDefinition(
+            description,
+            name,
+            directives,
+            fields,
+            location);
+    }
 
-        public TypeExtension ParseInputObjectExtension(bool hasExtend = true)
-        {
-            /* Description? extend input Name Directives? InputFieldsDefinition? */
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            SkipKeyword(Keywords.Extend.Span, optional: !hasExtend);
-            SkipKeyword(Keywords.Input.Span);
-            var name = ParseName();
-            var directives = ParseOptionalDirectives(true);
-            var fields = ParseOptionalInputObjectFields();
-
-            return new TypeExtension(new InputObjectDefinition(
+    public TypeExtension ParseInputObjectExtension(bool hasExtend = true)
+    {
+        /* Description? extend input Name Directives? InputFieldsDefinition? */
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        SkipKeyword(Keywords.Extend.Span, !hasExtend);
+        SkipKeyword(Keywords.Input.Span);
+        var name = ParseName();
+        var directives = ParseOptionalDirectives(true);
+        var fields = ParseOptionalInputObjectFields();
+
+        return new TypeExtension(new InputObjectDefinition(
                 description,
                 name,
                 directives,
                 fields,
                 location),
-                location);
-        }
+            location);
+    }
 
-        public FieldDefinition ParseFieldDefinition()
-        {
-            /* Description? Name ArgumentsDefinition?:Type Directives? */
+    public FieldDefinition ParseFieldDefinition()
+    {
+        /* Description? Name ArgumentsDefinition?:Type Directives? */
+
+        var location = GetLocation();
+        var description = ParseOptionalDescription();
+        var name = ParseName();
+        var argumentDefinitions = ParseOptionalArgumentDefinitions();
+        Skip(TokenKind.Colon);
+        var type = ParseType();
+        var directives = ParseOptionalDirectives(true);
+
+
+        return new FieldDefinition(
+            description,
+            name,
+            argumentDefinitions,
+            type,
+            directives,
+            location);
+    }
 
-            var location = GetLocation();
-            var description = ParseOptionalDescription();
-            var name = ParseName();
-            var argumentDefinitions = ParseOptionalArgumentDefinitions();
-            Skip(TokenKind.Colon);
-            var type = ParseType();
-            var directives = ParseOptionalDirectives(true);
+    internal InputFieldsDefinition? ParseOptionalInputObjectFields()
+    {
+        if (_lexer.Kind != TokenKind.LeftBrace)
+            return null;
 
+        Skip(TokenKind.LeftBrace);
 
-            return new FieldDefinition(
-                description,
-                name,
-                argumentDefinitions,
-                type,
-                directives,
-                location);
-        }
-
-        internal InputFieldsDefinition? ParseOptionalInputObjectFields()
+        var values = new List<InputValueDefinition>(5);
+        while (_lexer.Kind != TokenKind.RightBrace)
         {
-            if (_lexer.Kind != TokenKind.LeftBrace)
-                return null;
+            var value = ParseInputValueDefinition();
+            values.Add(value);
+        }
 
-            Skip(TokenKind.LeftBrace);
+        Skip(TokenKind.RightBrace);
+        return new InputFieldsDefinition(values);
+    }
 
-            var values = new List<InputValueDefinition>(5);
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                var value = ParseInputValueDefinition();
-                values.Add(value);
-            }
+    internal UnionMemberTypes? ParseOptionalUnionMembers()
+    {
+        /*  UnionMemberTypes | NamedType
+            = |? NamedType 
+        */
 
-            Skip(TokenKind.RightBrace);
-            return new InputFieldsDefinition(values);
-        }
+        if (_lexer.Kind != TokenKind.Equal)
+            return null;
 
-        internal UnionMemberTypes? ParseOptionalUnionMembers()
-        {
-            /*  UnionMemberTypes | NamedType
-                = |? NamedType 
-            */
+        Skip(TokenKind.Equal);
 
-            if (_lexer.Kind != TokenKind.Equal)
-                return null;
+        if (_lexer.Kind == TokenKind.Pipe)
+            _lexer.Advance();
 
-            Skip(TokenKind.Equal);
+        var namedTypes = new List<NamedType>(2);
+        while (_lexer.Kind == TokenKind.Name)
+        {
+            var nameType = ParseNamedType();
+            namedTypes.Add(nameType);
 
             if (_lexer.Kind == TokenKind.Pipe)
                 _lexer.Advance();
+            else
+                break;
+        }
 
-            var namedTypes = new List<NamedType>(2);
-            while (_lexer.Kind == TokenKind.Name)
-            {
-                var nameType = ParseNamedType();
-                namedTypes.Add(nameType);
+        return new UnionMemberTypes(namedTypes);
+    }
 
-                if (_lexer.Kind == TokenKind.Pipe)
-                    _lexer.Advance();
-                else
-                    break;
-            }
+    internal FieldsDefinition? ParseOptionalFieldDefinitions()
+    {
+        /* { FieldDefinition } */
 
-            return new UnionMemberTypes(namedTypes);
-        }
+        if (_lexer.Kind != TokenKind.LeftBrace)
+            return null;
 
-        internal FieldsDefinition? ParseOptionalFieldDefinitions()
-        {
-            /* { FieldDefinition } */
+        Skip(TokenKind.LeftBrace);
 
-            if (_lexer.Kind != TokenKind.LeftBrace)
-                return null;
+        var fields = new List<FieldDefinition>(5);
+        while (_lexer.Kind != TokenKind.RightBrace)
+        {
+            var field = ParseFieldDefinition();
+            fields.Add(field);
+        }
 
-            Skip(TokenKind.LeftBrace);
+        Skip(TokenKind.RightBrace);
 
-            var fields = new List<FieldDefinition>(5);
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                var field = ParseFieldDefinition();
-                fields.Add(field);
-            }
+        return new FieldsDefinition(fields);
+    }
 
-            Skip(TokenKind.RightBrace);
+    internal ImplementsInterfaces? ParseOptionalImplementsInterfaces()
+    {
+        /*  ImplementsInterfaces & NamedType
+            implements &? NamedType
+        */
 
-            return new FieldsDefinition(fields);
-        }
+        if (!Keywords.IsImplements(_lexer.Value))
+            return null;
 
-        internal ImplementsInterfaces? ParseOptionalImplementsInterfaces()
-        {
-            /*  ImplementsInterfaces & NamedType
-                implements &? NamedType
-            */
+        SkipKeyword(Keywords.Implements.Span);
 
-            if (!Keywords.IsImplements(_lexer.Value))
-                return null;
+        // skip &
+        if (_lexer.Kind == TokenKind.Ampersand)
+            _lexer.Advance();
 
-            SkipKeyword(Keywords.Implements.Span);
+        var namedTypes = new List<NamedType>();
+        while (_lexer.Kind == TokenKind.Name)
+        {
+            var namedType = ParseNamedType();
+            namedTypes.Add(namedType);
 
             // skip &
             if (_lexer.Kind == TokenKind.Ampersand)
                 _lexer.Advance();
-
-            var namedTypes = new List<NamedType>();
-            while (_lexer.Kind == TokenKind.Name)
-            {
-                var namedType = ParseNamedType();
-                namedTypes.Add(namedType);
-
-                // skip &
-                if (_lexer.Kind == TokenKind.Ampersand)
-                    _lexer.Advance();
-                else
-                    break;
-            }
-
-            return new ImplementsInterfaces(namedTypes);
+            else
+                break;
         }
 
-        public StringValue? ParseOptionalDescription()
+        return new ImplementsInterfaces(namedTypes);
+    }
+
+    public StringValue? ParseOptionalDescription()
+    {
+        // use preparsed description if it has
+        // been cached
+        if (_description != null)
         {
-            // use preparsed description if it has
-            // been cached
-            if (_description != null)
-            {
-                var value = _description;
-                _description = null;
-                return value;
-            }
+            var value = _description;
+            _description = null;
+            return value;
+        }
 
-            if (_lexer.Kind != TokenKind.StringValue
-                && _lexer.Kind != TokenKind.BlockStringValue)
-                return null;
+        if (_lexer.Kind != TokenKind.StringValue
+            && _lexer.Kind != TokenKind.BlockStringValue)
+            return null;
 
-            if (_lexer.Kind == TokenKind.BlockStringValue)
-                return ParseBlockStringValue();
+        if (_lexer.Kind == TokenKind.BlockStringValue)
+            return ParseBlockStringValue();
 
-            return ParseStringValue();
-        }
+        return ParseStringValue();
+    }
 
-        private void PreParseOptionalDescription()
-        {
-            _description = ParseOptionalDescription();
-        }
+    private void PreParseOptionalDescription()
+    {
+        _description = ParseOptionalDescription();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Parser.cs b/src/graphql.language/Parser.cs
index cc4bbb2e4..fc5c5ca63 100644
--- a/src/graphql.language/Parser.cs
+++ b/src/graphql.language/Parser.cs
@@ -7,693 +7,692 @@
 using Tanka.GraphQL.Language.Internal;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public ref partial struct Parser
 {
-    public ref partial struct Parser
+    private StringValue? _description;
+    private Lexer _lexer;
+
+    public Parser(in ReadOnlySpan<byte> span)
     {
-        private StringValue? _description;
-        private Lexer _lexer;
+        _description = null;
+        _lexer = Lexer.Create(span);
+        _lexer.Advance();
+    }
 
-        public Parser(in ReadOnlySpan<byte> span)
-        {
-            _description = null;
-            _lexer = Lexer.Create(span);
-            _lexer.Advance();
-        }
+    public static Parser Create(in ReadOnlySpan<byte> span)
+    {
+        return new Parser(span);
+    }
 
-        public static Parser Create(in ReadOnlySpan<byte> span)
+    public static Parser Create(in string data)
+    {
+        return Create(Encoding.UTF8.GetBytes(data));
+    }
+
+
+    private Location SkipKeyword(in ReadOnlySpan<byte> keyword, bool optional = false)
+    {
+        if (_lexer.Kind != TokenKind.Name)
         {
-            return new Parser(span);
+            if (optional)
+                return GetLocation();
+
+            throw new Exception($"Unexpected token: '{_lexer.Kind}'. " +
+                                $"Expected: '{TokenKind.Name}'");
         }
 
-        public static Parser Create(in string data)
+        if (!keyword.SequenceEqual(_lexer.Value))
         {
-            return Create(Encoding.UTF8.GetBytes(data));
+            if (optional)
+                return GetLocation();
+
+            throw new Exception(
+                $"Unexpected keyword: '{Encoding.UTF8.GetString(_lexer.Value)}'. " +
+                $"Expected: '{Encoding.UTF8.GetString(keyword)}'.");
         }
 
 
-        private Location SkipKeyword(in ReadOnlySpan<byte> keyword, bool optional = false)
+        return Skip(TokenKind.Name);
+    }
+
+    public ExecutableDocument ParseExecutableDocument()
+    {
+        var operations = new List<OperationDefinition>(1);
+        var fragmentDefinitions = new List<FragmentDefinition>();
+        while (_lexer.Kind != TokenKind.End)
         {
-            if (_lexer.Kind != TokenKind.Name)
+            switch (_lexer.Kind)
             {
-                if (optional)
-                    return GetLocation();
-
-                throw new Exception($"Unexpected token: '{_lexer.Kind}'. " +
-                                    $"Expected: '{TokenKind.Name}'");
-            }
+                case TokenKind.Name:
+                    if (Keywords.IsOperation(_lexer.Value, out var operationType))
+                    {
+                        operations.Add(ParseOperationDefinition(operationType));
+                        continue;
+                    }
+                    else if (Keywords.IsFragment(_lexer.Value))
+                    {
+                        fragmentDefinitions.Add(ParseFragmentDefinition());
+                        continue;
+                    }
 
-            if (!keyword.SequenceEqual(_lexer.Value))
-            {
-                if (optional)
-                    return GetLocation();
+                    break;
+                case TokenKind.LeftBrace:
+                    operations.Add(ParseShortOperationDefinition());
 
-                throw new Exception(
-                    $"Unexpected keyword: '{Encoding.UTF8.GetString(_lexer.Value)}'. " +
-                    $"Expected: '{Encoding.UTF8.GetString(keyword)}'.");
+                    continue;
+                default:
+                    throw new Exception($"Unexpected token {_lexer.Kind} at {_lexer.Line}:{_lexer.Column}");
             }
 
-
-            return Skip(TokenKind.Name);
+            _lexer.Advance();
         }
 
-        public ExecutableDocument ParseExecutableDocument()
-        {
-            var operations = new List<OperationDefinition>(1);
-            var fragmentDefinitions = new List<FragmentDefinition>();
-            while (_lexer.Kind != TokenKind.End)
-            {
-                switch (_lexer.Kind)
-                {
-                    case TokenKind.Name:
-                        if (Keywords.IsOperation(_lexer.Value, out var operationType))
-                        {
-                            operations.Add(ParseOperationDefinition(operationType));
-                            continue;
-                        }
-                        else if (Keywords.IsFragment(_lexer.Value))
-                        {
-                            fragmentDefinitions.Add(ParseFragmentDefinition());
-                            continue;
-                        }
-
-                        break;
-                    case TokenKind.LeftBrace:
-                        operations.Add(ParseShortOperationDefinition());
 
-                        continue;
-                    default:
-                        throw new Exception($"Unexpected token {_lexer.Kind} at {_lexer.Line}:{_lexer.Column}");
-                }
+        return new ExecutableDocument(
+            new OperationDefinitions(operations),
+            new FragmentDefinitions(fragmentDefinitions));
+    }
 
-                _lexer.Advance();
-            }
+    public FragmentDefinition ParseFragmentDefinition()
+    {
+        /* fragment FragmentName TypeCondition Directives? SelectionSet */
+        if (!Keywords.IsFragment(_lexer.Value))
+            throw new Exception("Unexpected keyword. Expected 'fragment'.");
+
+        // fragment
+        var location = Skip(TokenKind.Name);
+
+        var fragmentName = ParseFragmentName();
+        var typeCondition = ParseTypeCondition();
+        var directives = ParseOptionalDirectives();
+        var selectionSet = ParseSelectionSet();
+
+        return new FragmentDefinition(
+            fragmentName,
+            typeCondition,
+            directives,
+            selectionSet,
+            location);
+    }
 
+    public OperationDefinition ParseOperationDefinition()
+    {
+        // is short
+        if (_lexer.Kind == TokenKind.LeftBrace)
+            return ParseShortOperationDefinition();
+
+        // OperationType Name? VariableDefinitions? Directives? SelectionSet
+
+        // OperationType
+        if (!Keywords.IsOperation(_lexer.Value, out var operationType))
+            throw new Exception($"Unexpected operation type: '{Encoding.UTF8.GetString(_lexer.Value)}'");
+        var location = Skip(TokenKind.Name);
+
+        var name = ParseOptionalName();
+        var variableDefinitions = ParseOptionalVariableDefinitions();
+        var directives = ParseOptionalDirectives();
+        var selectionSet = ParseSelectionSet();
+
+        return new OperationDefinition(
+            operationType,
+            name,
+            variableDefinitions,
+            directives,
+            selectionSet,
+            location);
+    }
 
-            return new ExecutableDocument(
-                new OperationDefinitions(operations), 
-                new FragmentDefinitions(fragmentDefinitions));
-        }
+    public OperationDefinition ParseOperationDefinition(OperationType operationType)
+    {
+        // OperationType Name? VariableDefinitions? Directives? SelectionSet
+
+        // OperationType (coming as param)
+        var location = Skip(TokenKind.Name);
+
+        var name = ParseOptionalName();
+        var variableDefinitions = ParseOptionalVariableDefinitions();
+        var directives = ParseOptionalDirectives();
+        var selectionSet = ParseSelectionSet();
+
+        return new OperationDefinition(
+            operationType,
+            name,
+            variableDefinitions,
+            directives,
+            selectionSet,
+            location);
+    }
 
-        public FragmentDefinition ParseFragmentDefinition()
-        {
-            /* fragment FragmentName TypeCondition Directives? SelectionSet */
-            if (!Keywords.IsFragment(_lexer.Value))
-                throw new Exception("Unexpected keyword. Expected 'fragment'.");
-
-            // fragment
-            var location = Skip(TokenKind.Name);
-
-            var fragmentName = ParseFragmentName();
-            var typeCondition = ParseTypeCondition();
-            var directives = ParseOptionalDirectives();
-            var selectionSet = ParseSelectionSet();
-
-            return new FragmentDefinition(
-                fragmentName,
-                typeCondition,
-                directives,
-                selectionSet,
-                location);
-        }
+    public OperationDefinition ParseShortOperationDefinition()
+    {
+        var selectionSet = ParseSelectionSet();
+
+        return new OperationDefinition(
+            OperationType.Query,
+            null,
+            null,
+            null,
+            selectionSet,
+            selectionSet.Location,
+            true);
+    }
 
-        public OperationDefinition ParseOperationDefinition()
-        {
-            // is short
-            if (_lexer.Kind == TokenKind.LeftBrace)
-                return ParseShortOperationDefinition();
-
-            // OperationType Name? VariableDefinitions? Directives? SelectionSet
-
-            // OperationType
-            if (!Keywords.IsOperation(_lexer.Value, out var operationType))
-                throw new Exception($"Unexpected operation type: '{Encoding.UTF8.GetString(_lexer.Value)}'");
-            var location = Skip(TokenKind.Name);
-
-            var name = ParseOptionalName();
-            var variableDefinitions = ParseOptionalVariableDefinitions();
-            var directives = ParseOptionalDirectives();
-            var selectionSet = ParseSelectionSet();
-
-            return new OperationDefinition(
-                operationType,
-                name,
-                variableDefinitions,
-                directives,
-                selectionSet,
-                location);
-        }
+    public VariableDefinitions? ParseOptionalVariableDefinitions()
+    {
+        SkipComment();
 
-        public OperationDefinition ParseOperationDefinition(OperationType operationType)
-        {
-            // OperationType Name? VariableDefinitions? Directives? SelectionSet
-
-            // OperationType (coming as param)
-            var location = Skip(TokenKind.Name);
-
-            var name = ParseOptionalName();
-            var variableDefinitions = ParseOptionalVariableDefinitions();
-            var directives = ParseOptionalDirectives();
-            var selectionSet = ParseSelectionSet();
-
-            return new OperationDefinition(
-                operationType,
-                name,
-                variableDefinitions,
-                directives,
-                selectionSet,
-                location);
-        }
+        if (_lexer.Kind != TokenKind.LeftParenthesis)
+            return null;
 
-        public OperationDefinition ParseShortOperationDefinition()
-        {
-            var selectionSet = ParseSelectionSet();
-
-            return new OperationDefinition(
-                OperationType.Query,
-                null,
-                null,
-                null,
-                selectionSet,
-                selectionSet.Location,
-                isShort: true);
-        }
+        return ParseVariableDefinitions();
+    }
+
+    public VariableDefinitions ParseVariableDefinitions()
+    {
+        // (VariableDefinition[])
+        Skip(TokenKind.LeftParenthesis);
 
-        public VariableDefinitions? ParseOptionalVariableDefinitions()
+        var variableDefinitions = new List<VariableDefinition>();
+        while (_lexer.Kind != TokenKind.RightParenthesis)
         {
             SkipComment();
 
-            if (_lexer.Kind != TokenKind.LeftParenthesis)
-                return null;
-
-            return ParseVariableDefinitions();
+            var variableDefinition = ParseVariableDefinition();
+            variableDefinitions.Add(variableDefinition);
         }
 
-        public VariableDefinitions ParseVariableDefinitions()
-        {
-            // (VariableDefinition[])
-            Skip(TokenKind.LeftParenthesis);
+        Skip(TokenKind.RightParenthesis);
 
-            var variableDefinitions = new List<VariableDefinition>();
-            while (_lexer.Kind != TokenKind.RightParenthesis)
-            {
-                SkipComment();
-
-                var variableDefinition = ParseVariableDefinition();
-                variableDefinitions.Add(variableDefinition);
-            }
+        return new VariableDefinitions(variableDefinitions);
+    }
 
-            Skip(TokenKind.RightParenthesis);
+    public VariableDefinition ParseVariableDefinition()
+    {
+        /* Variable: Type DefaultValue? Directives? */
+        var variable = ParseVariable();
+        Skip(TokenKind.Colon);
+        var type = ParseType();
+        var defaultValue = ParseOptionalDefaultValue();
+        var directives = ParseOptionalDirectives();
+
+        return new VariableDefinition(
+            variable,
+            type,
+            defaultValue,
+            directives,
+            variable.Location);
+    }
 
-            return new VariableDefinitions(variableDefinitions);
-        }
+    public Directives? ParseOptionalDirectives(bool constant = false)
+    {
+        if (_lexer.Kind != TokenKind.At)
+            return null;
 
-        public VariableDefinition ParseVariableDefinition()
+        var directives = new List<Directive>(1);
+        while (_lexer.Kind == TokenKind.At)
         {
-            /* Variable: Type DefaultValue? Directives? */
-            var variable = ParseVariable();
-            Skip(TokenKind.Colon);
-            var type = ParseType();
-            var defaultValue = ParseOptionalDefaultValue();
-            var directives = ParseOptionalDirectives();
-
-            return new VariableDefinition(
-                variable,
-                type,
-                defaultValue,
-                directives,
-                variable.Location);
+            var directive = ParseDirective(constant);
+            directives.Add(directive);
         }
 
-        public Directives? ParseOptionalDirectives(bool constant = false)
-        {
-            if (_lexer.Kind != TokenKind.At)
-                return null;
+        return new Directives(directives);
+    }
 
-            var directives = new List<Directive>(1);
-            while (_lexer.Kind == TokenKind.At)
-            {
-                var directive = ParseDirective(constant);
-                directives.Add(directive);
-            }
+    public Directive ParseDirective(bool constant = false)
+    {
+        /* @Name Arguments? */
+        var location = Skip(TokenKind.At);
+        var name = ParseName();
+        var arguments = ParseOptionalArguments(constant);
+
+        return new Directive(
+            name,
+            arguments,
+            location);
+    }
 
-            return new Directives(directives);
-        }
+    public Arguments? ParseOptionalArguments(bool constant = false)
+    {
+        /* (Argument[]) */
+        if (_lexer.Kind != TokenKind.LeftParenthesis)
+            return null;
 
-        public Directive ParseDirective(bool constant = false)
+        Skip(TokenKind.LeftParenthesis);
+        var arguments = new List<Argument>();
+
+        while (_lexer.Kind != TokenKind.RightParenthesis)
         {
-            /* @Name Arguments? */
-            var location = Skip(TokenKind.At);
-            var name = ParseName();
-            var arguments = ParseOptionalArguments(constant);
-
-            return new Directive(
-                name,
-                arguments,
-                location);
+            var argument = ParseArgument(constant);
+            arguments.Add(argument);
         }
 
-        public Arguments? ParseOptionalArguments(bool constant = false)
-        {
-            /* (Argument[]) */
-            if (_lexer.Kind != TokenKind.LeftParenthesis)
-                return null;
+        Skip(TokenKind.RightParenthesis);
+        return new Arguments(arguments);
+    }
 
-            Skip(TokenKind.LeftParenthesis);
-            var arguments = new List<Argument>();
+    public Argument ParseArgument(bool constant = false)
+    {
+        /* Name:Value */
+        var name = ParseName();
+        Skip(TokenKind.Colon);
+        var value = ParseValue(constant);
+
+        return new Argument(
+            name,
+            value,
+            name.Location);
+    }
 
-            while (_lexer.Kind != TokenKind.RightParenthesis)
-            {
-                var argument = ParseArgument(constant);
-                arguments.Add(argument);
-            }
+    public DefaultValue? ParseOptionalDefaultValue()
+    {
+        if (_lexer.Kind != TokenKind.Equal)
+            return null;
 
-            Skip(TokenKind.RightParenthesis);
-            return new Arguments(arguments);
-        }
+        var location = Skip(TokenKind.Equal);
+        var value = ParseValue(true);
 
-        public Argument ParseArgument(bool constant = false)
-        {
-            /* Name:Value */
-            var name = ParseName();
-            Skip(TokenKind.Colon);
-            var value = ParseValue(constant);
+        return new DefaultValue(value, location);
+    }
 
-            return new Argument(
-                name,
-                value,
-                name.Location);
-        }
+    public ValueBase ParseValue(bool constant = false)
+    {
+        /* Value :
+            if not const Variable
+            IntValue
+            FloatValue
+            StringValue
+            BooleanValue
+            NullValue
+            EnumValue
+            ListValue [const]
+            ObjectValue {const}
+        */
+
+        return (_lexer.Kind, constant) switch
+        {
+            (TokenKind.Dollar, false) => ParseVariable(),
+            (TokenKind.Dollar, true) => throw new Exception("Unexpected variable on constants value"),
+            (TokenKind.IntValue, _) => ParseIntValue(),
+            (TokenKind.FloatValue, _) => ParseFloatValue(),
+            (TokenKind.StringValue, _) => ParseStringValue(),
+            (TokenKind.BlockStringValue, _) => ParseBlockStringValue(),
+            (TokenKind.Name, _) => ParseNameValue(), // boolean or enum or null
+            (TokenKind.LeftBracket, _) => ParseListValue(constant),
+            (TokenKind.LeftBrace, _) => ParseObjectValue(constant),
+            _ => throw new Exception($"Unexpected value token: {_lexer.Kind}")
+        };
+    }
 
-        public DefaultValue? ParseOptionalDefaultValue()
+    /// <summary>
+    ///     Parse NullValue, BooleanValue or EnumValue
+    /// </summary>
+    /// <returns></returns>
+    public ValueBase ParseNameValue()
+    {
+        var location = Ensure(TokenKind.Name);
+        if (Keywords.IsNull(_lexer.Value))
         {
-            if (_lexer.Kind != TokenKind.Equal)
-                return null;
-
-            var location = Skip(TokenKind.Equal);
-            var value = ParseValue(true);
-
-            return new DefaultValue(value, location);
+            Skip(TokenKind.Name);
+            return new NullValue(location);
         }
 
-        public ValueBase ParseValue(bool constant = false)
+        if (Keywords.IsBoolean(_lexer.Value, out var value))
         {
-            /* Value :
-                if not const Variable
-                IntValue
-                FloatValue
-                StringValue
-                BooleanValue
-                NullValue
-                EnumValue
-                ListValue [const]
-                ObjectValue {const}
-            */
-
-            return (_lexer.Kind, constant) switch
-            {
-                (TokenKind.Dollar, false) => ParseVariable(),
-                (TokenKind.Dollar, true) => throw new Exception("Unexpected variable on constants value"),
-                (TokenKind.IntValue, _) => ParseIntValue(),
-                (TokenKind.FloatValue, _) => ParseFloatValue(),
-                (TokenKind.StringValue, _) => ParseStringValue(),
-                (TokenKind.BlockStringValue, _) => ParseBlockStringValue(),
-                (TokenKind.Name, _) => ParseNameValue(), // boolean or enum or null
-                (TokenKind.LeftBracket, _) => ParseListValue(constant),
-                (TokenKind.LeftBrace, _) => ParseObjectValue(constant),
-                _ => throw new Exception($"Unexpected value token: {_lexer.Kind}")
-            };
+            Skip(TokenKind.Name);
+            return new BooleanValue(value, location);
         }
 
-        /// <summary>
-        ///     Parse NullValue, BooleanValue or EnumValue
-        /// </summary>
-        /// <returns></returns>
-        public ValueBase ParseNameValue()
-        {
-            var location = Ensure(TokenKind.Name);
-            if (Keywords.IsNull(_lexer.Value))
-            {
-                Skip(TokenKind.Name);
-                return new NullValue(location);
-            }
+        return ParseEnumValue();
+    }
 
-            if (Keywords.IsBoolean(_lexer.Value, out var value))
-            {
-                Skip(TokenKind.Name);
-                return new BooleanValue(value, location);
-            }
+    public EnumValue ParseEnumValue()
+    {
+        //todo: maybe this should be kept as byte[]?
+        var enumName = ParseName();
+        return new EnumValue(enumName, enumName.Location);
+    }
 
-            return ParseEnumValue();
-        }
+    public StringValue ParseBlockStringValue()
+    {
+        Ensure(TokenKind.BlockStringValue);
+        var value = BlockStringValue(_lexer.Value);
+        var location = Skip(TokenKind.BlockStringValue);
+        return new StringValue(value, location);
+    }
 
-        public EnumValue ParseEnumValue()
-        {
-            //todo: maybe this should be kept as byte[]?
-            var enumName = ParseName();
-            return new EnumValue(enumName, enumName.Location);
-        }
+    public StringValue ParseStringValue()
+    {
+        Ensure(TokenKind.StringValue);
+        var value = _lexer.Value.ToArray();
+        var location = Skip(TokenKind.StringValue);
+        return new StringValue(value, location);
+    }
 
-        public StringValue ParseBlockStringValue()
-        {
-            Ensure(TokenKind.BlockStringValue);
-            var value = BlockStringValue(_lexer.Value);
-            var location = Skip(TokenKind.BlockStringValue);
-            return new StringValue(value, location);
-        }
+    public FloatValue ParseFloatValue()
+    {
+        var value = new FloatValue(
+            _lexer.Value.ToArray(),
+            _lexer.IsExponential,
+            GetLocation());
 
-        public StringValue ParseStringValue()
-        {
-            Ensure(TokenKind.StringValue);
-            var value = _lexer.Value.ToArray();
-            var location = Skip(TokenKind.StringValue);
-            return new StringValue(value, location);
-        }
+        Skip(TokenKind.FloatValue);
+        return value;
+    }
 
-        public FloatValue ParseFloatValue()
-        {
-            var value = new FloatValue(
-                _lexer.Value.ToArray(), 
-                _lexer.IsExponential,
-                GetLocation());
+    public IntValue ParseIntValue()
+    {
+        if (!Utf8Parser.TryParse(_lexer.Value, out int integer, out _))
+            throw new Exception("Could not parse integer value");
 
-            Skip(TokenKind.FloatValue);
-            return value;
-        }
+        var location = Skip(TokenKind.IntValue);
+        return new IntValue(integer, location);
+    }
 
-        public IntValue ParseIntValue()
-        {
-            if (!Utf8Parser.TryParse(_lexer.Value, out int integer, out _))
-                throw new Exception("Could not parse integer value");
+    public ObjectValue ParseObjectValue(bool constant = false)
+    {
+        var location = Skip(TokenKind.LeftBrace);
+        var fields = new List<ObjectField>();
 
-            var location = Skip(TokenKind.IntValue);
-            return new IntValue(integer, location);
+        while (_lexer.Kind != TokenKind.RightBrace)
+        {
+            var field = ParseObjectField(constant);
+            fields.Add(field);
         }
 
-        public ObjectValue ParseObjectValue(bool constant = false)
-        {
-            var location = Skip(TokenKind.LeftBrace);
-            var fields = new List<ObjectField>();
+        Skip(TokenKind.RightBrace);
+        return new ObjectValue(fields, location);
+    }
 
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                var field = ParseObjectField(constant);
-                fields.Add(field);
-            }
+    public ObjectField ParseObjectField(bool constant = false)
+    {
+        var name = ParseName();
+        Skip(TokenKind.Colon);
+        var value = ParseValue(constant);
 
-            Skip(TokenKind.RightBrace);
-            return new ObjectValue(fields, location);
-        }
+        return new ObjectField(in name, value, name.Location);
+    }
+
+    public ListValue ParseListValue(bool constant)
+    {
+        var location = Skip(TokenKind.LeftBracket);
 
-        public ObjectField ParseObjectField(bool constant = false)
+        var values = new List<ValueBase>();
+        while (_lexer.Kind != TokenKind.RightBracket)
         {
-            var name = ParseName();
-            Skip(TokenKind.Colon);
             var value = ParseValue(constant);
-
-            return new ObjectField(in name, value, name.Location);
+            values.Add(value);
         }
 
-        public ListValue ParseListValue(bool constant)
-        {
-            var location = Skip(TokenKind.LeftBracket);
-
-            var values = new List<ValueBase>();
-            while (_lexer.Kind != TokenKind.RightBracket)
-            {
-                var value = ParseValue(constant);
-                values.Add(value);
-            }
+        Skip(TokenKind.RightBracket);
+        return new ListValue(values, location);
+    }
 
+    public TypeBase ParseType()
+    {
+        // Type
+        // [Type]
+        // Type!
+        // [Type!]
+        // [Type]!
+
+        // [Type]
+        var location = GetLocation();
+        TypeBase type;
+        if (_lexer.Kind == TokenKind.LeftBracket)
+        {
+            Skip(TokenKind.LeftBracket);
+            var listType = ParseType();
             Skip(TokenKind.RightBracket);
-            return new ListValue(values, location);
+            type = new ListType(listType, location);
         }
-
-        public TypeBase ParseType()
+        else
         {
-            // Type
-            // [Type]
-            // Type!
-            // [Type!]
-            // [Type]!
-
-            // [Type]
-            var location = GetLocation();
-            TypeBase type;
-            if (_lexer.Kind == TokenKind.LeftBracket)
-            {
-                Skip(TokenKind.LeftBracket);
-                var listType = ParseType();
-                Skip(TokenKind.RightBracket);
-                type = new ListType(listType, location);
-            }
-            else
-            {
-                type = ParseNamedType();
-            }
-
-            // Type!
-            if (_lexer.Kind == TokenKind.ExclamationMark)
-            {
-                Skip(TokenKind.ExclamationMark);
-                type = new NonNullType(type, location);
-            }
-
-            return type;
+            type = ParseNamedType();
         }
 
-        public NamedType ParseNamedType()
+        // Type!
+        if (_lexer.Kind == TokenKind.ExclamationMark)
         {
-            var name = ParseName();
-            return new NamedType(in name, name.Location);
+            Skip(TokenKind.ExclamationMark);
+            type = new NonNullType(type, location);
         }
 
-        public Variable ParseVariable()
-        {
-            var location = Skip(TokenKind.Dollar);
-            return new Variable(ParseName(), location);
-        }
+        return type;
+    }
 
-        public SelectionSet? ParseOptionalSelectionSet()
-        {
-            SkipComment();
+    public NamedType ParseNamedType()
+    {
+        var name = ParseName();
+        return new NamedType(in name, name.Location);
+    }
 
-            if (_lexer.Kind != TokenKind.LeftBrace)
-                return null;
+    public Variable ParseVariable()
+    {
+        var location = Skip(TokenKind.Dollar);
+        return new Variable(ParseName(), location);
+    }
 
-            return ParseSelectionSet();
-        }
+    public SelectionSet? ParseOptionalSelectionSet()
+    {
+        SkipComment();
 
-        public SelectionSet ParseSelectionSet()
-        {
-            /*  SelectionSet
-                    {Selection[]}
-
-                Selection
-                    Field
-                    InlineFragment ...TypeCondition? Directives? SelectionSet
-                    FragmentSpread ...FragmentName Directives?
-            */
-            var location = GetLocation();
-
-            // {
-            Skip(TokenKind.LeftBrace);
-
-            // parse until }
-            var selections = new List<ISelection>();
-            while (_lexer.Kind != TokenKind.RightBrace)
-            {
-                SkipComment();
-                ISelection selection;
-
-                // check for fragment
-                if (_lexer.Kind == TokenKind.Spread)
-                {
-                    Skip(TokenKind.Spread);
-                    if (Keywords.IsOn(_lexer.Value) || _lexer.Kind == TokenKind.LeftBrace || _lexer.Kind == TokenKind.At)
-                        selection = ParseInlineFragment(false);
-                    else
-                        selection = ParseFragmentSpread(false);
-                }
-                else
-                {
-                    // field selection
-                    selection = ParseFieldSelection();
-                }
+        if (_lexer.Kind != TokenKind.LeftBrace)
+            return null;
 
-                // add selection
-                selections.Add(selection);
-            }
+        return ParseSelectionSet();
+    }
+
+    public SelectionSet ParseSelectionSet()
+    {
+        /*  SelectionSet
+                {Selection[]}
 
-            // }
-            Skip(TokenKind.RightBrace);
+            Selection
+                Field
+                InlineFragment ...TypeCondition? Directives? SelectionSet
+                FragmentSpread ...FragmentName Directives?
+        */
+        var location = GetLocation();
 
-            return new SelectionSet(selections, location);
-        }
+        // {
+        Skip(TokenKind.LeftBrace);
 
-        public FieldSelection ParseFieldSelection()
+        // parse until }
+        var selections = new List<ISelection>();
+        while (_lexer.Kind != TokenKind.RightBrace)
         {
-            // Alias? Name Arguments? Directives? SelectionSet?
-            var location = GetLocation();
-            var nameOrAlias = ParseName();
-            var name = nameOrAlias;
+            SkipComment();
+            ISelection selection;
 
-            var hasAlias = false;
-            if (_lexer.Kind == TokenKind.Colon)
+            // check for fragment
+            if (_lexer.Kind == TokenKind.Spread)
             {
-                _lexer.Advance();
-                name = ParseName();
-                hasAlias = true;
+                Skip(TokenKind.Spread);
+                if (Keywords.IsOn(_lexer.Value) || _lexer.Kind == TokenKind.LeftBrace || _lexer.Kind == TokenKind.At)
+                    selection = ParseInlineFragment(false);
+                else
+                    selection = ParseFragmentSpread(false);
+            }
+            else
+            {
+                // field selection
+                selection = ParseFieldSelection();
             }
 
-            var arguments = ParseOptionalArguments();
-            var directives = ParseOptionalDirectives();
-            var selectionSet = ParseOptionalSelectionSet();
-
-            return new FieldSelection(
-                hasAlias ? nameOrAlias : default,
-                name,
-                arguments,
-                directives,
-                selectionSet,
-                location);
+            // add selection
+            selections.Add(selection);
         }
 
-        public FragmentSpread ParseFragmentSpread(bool spread = true)
+        // }
+        Skip(TokenKind.RightBrace);
+
+        return new SelectionSet(selections, location);
+    }
+
+    public FieldSelection ParseFieldSelection()
+    {
+        // Alias? Name Arguments? Directives? SelectionSet?
+        var location = GetLocation();
+        var nameOrAlias = ParseName();
+        var name = nameOrAlias;
+
+        var hasAlias = false;
+        if (_lexer.Kind == TokenKind.Colon)
         {
-            /* ...FragmentName Directives? */
-            Location? location = null;
+            _lexer.Advance();
+            name = ParseName();
+            hasAlias = true;
+        }
 
-            //todo: location might be wrong (spread skipped when spread == false)
-            if (spread)
-                location = Skip(TokenKind.Spread);
+        var arguments = ParseOptionalArguments();
+        var directives = ParseOptionalDirectives();
+        var selectionSet = ParseOptionalSelectionSet();
 
-            var name = ParseFragmentName();
+        return new FieldSelection(
+            hasAlias ? nameOrAlias : default,
+            name,
+            arguments,
+            directives,
+            selectionSet,
+            location);
+    }
 
-            var directives = ParseOptionalDirectives();
+    public FragmentSpread ParseFragmentSpread(bool spread = true)
+    {
+        /* ...FragmentName Directives? */
+        Location? location = null;
 
-            return new FragmentSpread(
-                name,
-                directives,
-                location ?? name.Location);
-        }
+        //todo: location might be wrong (spread skipped when spread == false)
+        if (spread)
+            location = Skip(TokenKind.Spread);
 
-        public InlineFragment ParseInlineFragment(bool spread = true)
-        {
-            /* ... TypeCondition? Directives? SelectionSet */
-            Location? location = null;
-            if (spread)
-                location = Skip(TokenKind.Spread);
-
-            var typeCondition = ParseOptionalTypeCondition();
-            var directives = ParseOptionalDirectives();
-            var selectionSet = ParseSelectionSet();
-
-            return new InlineFragment(
-                typeCondition,
-                directives,
-                selectionSet,
-                location ?? selectionSet.Location);
-        }
+        var name = ParseFragmentName();
 
-        public Name ParseFragmentName()
-        {
-            /* Name but not on */
-            if (Keywords.IsOn(_lexer.Value))
-                throw new Exception("Unexpected keyword on");
+        var directives = ParseOptionalDirectives();
 
-            return ParseName();
-        }
+        return new FragmentSpread(
+            name,
+            directives,
+            location ?? name.Location);
+    }
 
-        private NamedType? ParseOptionalTypeCondition()
-        {
-            /* on NamedType */
-            if (_lexer.Kind != TokenKind.Name)
-                return null;
+    public InlineFragment ParseInlineFragment(bool spread = true)
+    {
+        /* ... TypeCondition? Directives? SelectionSet */
+        Location? location = null;
+        if (spread)
+            location = Skip(TokenKind.Spread);
+
+        var typeCondition = ParseOptionalTypeCondition();
+        var directives = ParseOptionalDirectives();
+        var selectionSet = ParseSelectionSet();
+
+        return new InlineFragment(
+            typeCondition,
+            directives,
+            selectionSet,
+            location ?? selectionSet.Location);
+    }
 
-            return ParseTypeCondition();
-        }
+    public Name ParseFragmentName()
+    {
+        /* Name but not on */
+        if (Keywords.IsOn(_lexer.Value))
+            throw new Exception("Unexpected keyword on");
 
-        public NamedType ParseTypeCondition()
-        {
-            if (!Keywords.IsOn(_lexer.Value))
-                throw new Exception(
-                    $"Unexpected keyword '{Encoding.UTF8.GetString(_lexer.Value)}'. " +
-                    "Expected 'on'.");
+        return ParseName();
+    }
 
-            // on
-            Skip(TokenKind.Name);
+    private NamedType? ParseOptionalTypeCondition()
+    {
+        /* on NamedType */
+        if (_lexer.Kind != TokenKind.Name)
+            return null;
 
-            return ParseNamedType();
-        }
+        return ParseTypeCondition();
+    }
 
-        public Name? ParseOptionalName()
-        {
-            SkipComment();
+    public NamedType ParseTypeCondition()
+    {
+        if (!Keywords.IsOn(_lexer.Value))
+            throw new Exception(
+                $"Unexpected keyword '{Encoding.UTF8.GetString(_lexer.Value)}'. " +
+                "Expected 'on'.");
 
-            if (_lexer.Kind != TokenKind.Name)
-                return null;
+        // on
+        Skip(TokenKind.Name);
 
-            return ParseName();
-        }
+        return ParseNamedType();
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Name ParseName()
-        {
-            var location = Ensure(TokenKind.Name);
+    public Name? ParseOptionalName()
+    {
+        SkipComment();
 
-            var value = Encoding.UTF8.GetString(_lexer.Value);
-            _lexer.Advance();
+        if (_lexer.Kind != TokenKind.Name)
+            return null;
 
-            return new Name(value, location);
-        }
+        return ParseName();
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private Location Ensure(TokenKind kind)
-        {
-            SkipComment();
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public Name ParseName()
+    {
+        var location = Ensure(TokenKind.Name);
 
-            if (_lexer.Kind != kind)
-                throw new Exception(
-                    $"Unexpected token: {_lexer.Kind}@{_lexer.Line}:{_lexer.Column}. " +
-                    $"Expected: {kind}");
+        var value = Encoding.UTF8.GetString(_lexer.Value);
+        _lexer.Advance();
 
-            return GetLocation();
-        }
+        return new Name(value, location);
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private Location GetLocation()
-        {
-            return new Location(_lexer.Line, _lexer.Column);
-        }
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private Location Ensure(TokenKind kind)
+    {
+        SkipComment();
 
-        [Conditional("GQL_COMMENTS")]
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private void SkipComment()
-        {
+        if (_lexer.Kind != kind)
+            throw new Exception(
+                $"Unexpected token: {_lexer.Kind}@{_lexer.Line}:{_lexer.Column}. " +
+                $"Expected: {kind}");
+
+        return GetLocation();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private Location GetLocation()
+    {
+        return new Location(_lexer.Line, _lexer.Column);
+    }
+
+    [Conditional("GQL_COMMENTS")]
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private void SkipComment()
+    {
 #if GQL_COMMENTS
             if (_lexer.Kind == TokenKind.Comment)
                 _lexer.Advance();
 #endif
-        }
+    }
 
-        //[MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private Location Skip(TokenKind expectedToken)
-        {
-            var location = Ensure(expectedToken);
+    //[MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private Location Skip(TokenKind expectedToken)
+    {
+        var location = Ensure(expectedToken);
 
-            if (!_lexer.Advance() && _lexer.Kind != TokenKind.End)
-                throw new Exception(
-                    $"Expected to skip {expectedToken} at {_lexer.Line}:{_lexer.Column} but lexer could not advance");
+        if (!_lexer.Advance() && _lexer.Kind != TokenKind.End)
+            throw new Exception(
+                $"Expected to skip {expectedToken} at {_lexer.Line}:{_lexer.Column} but lexer could not advance");
 
-            return location;
-        }
+        return location;
+    }
 
-        private byte[] BlockStringValue(in ReadOnlySpan<byte> value)
-        {
-            var reader = new BlockStringValueReader(value);
-            var blockStringValue = reader.Read();
-            return blockStringValue.ToArray();
-        }
+    private byte[] BlockStringValue(in ReadOnlySpan<byte> value)
+    {
+        var reader = new BlockStringValueReader(value);
+        var blockStringValue = reader.Read();
+        return blockStringValue.ToArray();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Printer.cs b/src/graphql.language/Printer.cs
index 70d80c275..c4fa38eb9 100644
--- a/src/graphql.language/Printer.cs
+++ b/src/graphql.language/Printer.cs
@@ -1,615 +1,576 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Net.Mime;
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public class PrinterContext : DocumentWalkerContextBase
 {
-    public class PrinterContext: DocumentWalkerContextBase
+    private StringBuilder _builder { get; } = new();
+
+    public void Append(object obj)
     {
-        private StringBuilder _builder { get; } = new StringBuilder();
-        
-        public void Append(object obj) => _builder.Append(obj);
+        _builder.Append(obj);
+    }
 
-        public void AppendLine() => _builder.AppendLine();
+    public void AppendLine()
+    {
+        _builder.AppendLine();
+    }
 
-        public void AppendJoin(char separator, IEnumerable<object> items) => _builder.AppendJoin(separator, items);
+    public void AppendJoin(char separator, IEnumerable<object> items)
+    {
+        _builder.AppendJoin(separator, items);
+    }
 
-        public bool EndsWith(char c)
-        {
-            return _builder[^1] == c;
-        }
+    public bool EndsWith(char c)
+    {
+        return _builder[^1] == c;
+    }
 
-        public void Rewind()
-        {
-            _builder.Remove(_builder.Length-1, 1);
-        }
-        
-        public override string ToString()
-        {
-            return _builder.ToString().Trim(' ');
-        }
+    public void Rewind()
+    {
+        _builder.Remove(_builder.Length - 1, 1);
+    }
 
-        public void AppendDescription(StringValue? description)
-        {
-            if (string.IsNullOrEmpty(description))
-                return;
-
-            var str = description.ToString();
-            Append("\"\"\"");
-            Append(str);
-            Append("\"\"\"");
-            Append(" ");
-        }
+    public override string ToString()
+    {
+        return _builder.ToString().Trim(' ');
     }
 
-    public class Printer : ReadOnlyDocumentVisitorBase<PrinterContext>
+    public void AppendDescription(StringValue? description)
     {
-        public static string Print(INode node)
-        {
-            var printer = new Printer();
-            var context = new PrinterContext();
-            var walker = new ReadOnlyDocumentWalker<PrinterContext>(
-                new[] {printer},
-                context
-            );
-
-            walker.Visit(node);
-            return context.ToString();
-        }
+        if (string.IsNullOrEmpty(description))
+            return;
+
+        var str = description.ToString();
+        Append("\"\"\"");
+        Append(str);
+        Append("\"\"\"");
+        Append(" ");
+    }
+}
 
-        public static string Print(ICollectionNode<INode> nodes)
-        {
-            var printer = new Printer();
-            var context = new PrinterContext();
-            var walker = new ReadOnlyDocumentWalker<PrinterContext>(
-                new[] {printer},
-                context
-            );
+public class Printer : ReadOnlyDocumentVisitorBase<PrinterContext>
+{
+    public static string Print(INode node)
+    {
+        var printer = new Printer();
+        var context = new PrinterContext();
+        var walker = new ReadOnlyDocumentWalker<PrinterContext>(
+            new[] { printer },
+            context
+        );
+
+        walker.Visit(node);
+        return context.ToString();
+    }
 
-            walker.Visit(nodes);
+    public static string Print(ICollectionNode<INode> nodes)
+    {
+        var printer = new Printer();
+        var context = new PrinterContext();
+        var walker = new ReadOnlyDocumentWalker<PrinterContext>(
+            new[] { printer },
+            context
+        );
 
-            return context.ToString();
-        }
+        walker.Visit(nodes);
 
-        protected override void ExitValue(PrinterContext context, ValueBase value)
-        {
-            if (context.Parent is ICollectionNode<INode>)
-            {
-                if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
-                    context.Append(',');
-            }
-        }
+        return context.ToString();
+    }
 
-        protected override void ExitIntValue(PrinterContext context, IntValue intValue)
-        {
-            context.Append(intValue.Value);
-        }
+    protected override void ExitValue(PrinterContext context, ValueBase value)
+    {
+        if (context.Parent is ICollectionNode<INode>)
+            if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
+                context.Append(',');
+    }
 
-        protected override void ExitFloatValue(PrinterContext context, FloatValue floatValue)
-        {
-            var str = Encoding.UTF8.GetString(floatValue.ValueSpan);
-            context.Append(str);
-        }
+    protected override void ExitIntValue(PrinterContext context, IntValue intValue)
+    {
+        context.Append(intValue.Value);
+    }
 
-        protected override void ExitEnumValue(PrinterContext context, EnumValue enumValue)
-        {
-            context.Append(enumValue.Name.Value);
-        }
+    protected override void ExitFloatValue(PrinterContext context, FloatValue floatValue)
+    {
+        var str = Encoding.UTF8.GetString(floatValue.ValueSpan);
+        context.Append(str);
+    }
 
-        protected override void ExitBooleanValue(PrinterContext context, BooleanValue booleanValue)
-        {
-            context.Append(booleanValue.Value.ToString().ToLowerInvariant());
-        }
+    protected override void ExitEnumValue(PrinterContext context, EnumValue enumValue)
+    {
+        context.Append(enumValue.Name.Value);
+    }
 
-        protected override void ExitStringValue(PrinterContext context, StringValue stringValue)
-        {
-            if (stringValue.ValueSpan.IndexOf((byte)'\n') != -1)
-            {
-                context.Append("\"\"\"");
-                context.Append(Encoding.UTF8.GetString(stringValue.ValueSpan));
-                context.Append("\"\"\"");
-            }
-            else
-            {
-                context.Append("\"");
-                context.Append(Encoding.UTF8.GetString(stringValue.ValueSpan));
-                context.Append("\"");
-            }
-        }
+    protected override void ExitBooleanValue(PrinterContext context, BooleanValue booleanValue)
+    {
+        context.Append(booleanValue.Value.ToString().ToLowerInvariant());
+    }
 
-        protected override void ExitNullValue(PrinterContext context, NullValue nullValue)
+    protected override void ExitStringValue(PrinterContext context, StringValue stringValue)
+    {
+        if (stringValue.ValueSpan.IndexOf((byte)'\n') != -1)
         {
-            if (!(context.Parent is DefaultValue defaultValue))
-            {
-                context.Append("null");
-            }
+            context.Append("\"\"\"");
+            context.Append(Encoding.UTF8.GetString(stringValue.ValueSpan));
+            context.Append("\"\"\"");
         }
-
-        protected override void EnterListValue(PrinterContext context, ListValue listValue)
+        else
         {
-            context.Append("[");
+            context.Append("\"");
+            context.Append(Encoding.UTF8.GetString(stringValue.ValueSpan));
+            context.Append("\"");
         }
+    }
 
-        protected override void ExitListValue(PrinterContext context, ListValue listValue)
-        {
-            context.Append("]");
-        }
+    protected override void ExitNullValue(PrinterContext context, NullValue nullValue)
+    {
+        if (!(context.Parent is DefaultValue defaultValue)) context.Append("null");
+    }
 
-        protected override void EnterObjectValue(PrinterContext context, ObjectValue objectValue)
-        {
-            context.Append("{ ");
-        }
+    protected override void EnterListValue(PrinterContext context, ListValue listValue)
+    {
+        context.Append("[");
+    }
 
-        protected override void ExitObjectValue(PrinterContext context, ObjectValue objectValue)
-        {
-            context.Append(" } ");
-        }
+    protected override void ExitListValue(PrinterContext context, ListValue listValue)
+    {
+        context.Append("]");
+    }
 
-        protected override void ExitNamedType(PrinterContext context, NamedType namedType)
-        {
-            context.Append(namedType.Name.Value);
-
-            if (context.Parent is ImplementsInterfaces)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                {
-                    context.Append(" & ");
-                }
-            }
-
-            if (context.Parent is UnionMemberTypes)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                {
-                    context.Append(" | ");
-                }
-            }
-        }
+    protected override void EnterObjectValue(PrinterContext context, ObjectValue objectValue)
+    {
+        context.Append("{ ");
+    }
 
-        protected override void EnterListType(PrinterContext context, ListType listType)
-        {
-            context.Append("[");
-        }
-        
-        protected override void ExitListType(PrinterContext context, ListType listType)
-        {
-            context.Append("]");
-        }
+    protected override void ExitObjectValue(PrinterContext context, ObjectValue objectValue)
+    {
+        context.Append(" } ");
+    }
 
-        protected override void ExitNonNullType(PrinterContext context, NonNullType nonNullType)
-        {
-            context.Append("!");
-        }
+    protected override void ExitNamedType(PrinterContext context, NamedType namedType)
+    {
+        context.Append(namedType.Name.Value);
 
-        protected override void EnterObjectField(PrinterContext context, ObjectField objectField)
-        {
-            context.Append($"{objectField.Name.Value}: ");
-        }
+        if (context.Parent is ImplementsInterfaces)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(" & ");
 
-        protected override void ExitObjectField(PrinterContext context, ObjectField objectField)
-        {
-            if (context.Parent is ObjectValue)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(", ");
-            }
-        }
+        if (context.Parent is UnionMemberTypes)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(" | ");
+    }
 
-        protected override void EnterArguments(PrinterContext context, Arguments arguments)
-        {
-            if (arguments.Count > 0)
-            {
-                context.Append('(');
-            }
-        }
-        
-        protected override void EnterArgument(PrinterContext context, Argument argument)
-        {
-            context.Append($"{argument.Name}: ");
-        }
+    protected override void EnterListType(PrinterContext context, ListType listType)
+    {
+        context.Append("[");
+    }
 
-        protected override void ExitArgument(PrinterContext context, Argument argument)
-        {
-            if (context.CurrentArray?.Array is Arguments arguments)
-            {
-                if (arguments.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(", ");
-            }
-        }
+    protected override void ExitListType(PrinterContext context, ListType listType)
+    {
+        context.Append("]");
+    }
 
-        protected override void ExitArguments(PrinterContext context, Arguments arguments)
-        {
-            if (arguments.Count > 0)
-            {
-                context.Append(')');
-            }
-        }
+    protected override void ExitNonNullType(PrinterContext context, NonNullType nonNullType)
+    {
+        context.Append("!");
+    }
 
-        protected override void EnterVariable(PrinterContext context, Variable variable)
-        {
-            context.Append($"${variable.Name.Value}");
+    protected override void EnterObjectField(PrinterContext context, ObjectField objectField)
+    {
+        context.Append($"{objectField.Name.Value}: ");
+    }
 
-            if (context.Parent is VariableDefinition definition)
-            {
-                context.Append(": ");
-            }
-        }
+    protected override void ExitObjectField(PrinterContext context, ObjectField objectField)
+    {
+        if (context.Parent is ObjectValue)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(", ");
+    }
 
-        protected override void EnterDirective(PrinterContext context, Directive directive)
-        {
-            context.Append($"@{directive.Name.Value}");
-        }
+    protected override void EnterArguments(PrinterContext context, Arguments arguments)
+    {
+        if (arguments.Count > 0) context.Append('(');
+    }
 
-        protected override void ExitDirective(PrinterContext context, Directive directive)
-        {
-            if (context.Parent is Directives)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(' ');
-            }
-        }
+    protected override void EnterArgument(PrinterContext context, Argument argument)
+    {
+        context.Append($"{argument.Name}: ");
+    }
 
-        protected override void EnterDefaultValue(PrinterContext context, DefaultValue defaultValue)
-        {
-            if (defaultValue.Value.Kind != NodeKind.NullValue)
-                    context.Append(" = ");
-        }
+    protected override void ExitArgument(PrinterContext context, Argument argument)
+    {
+        if (context.CurrentArray?.Array is Arguments arguments)
+            if (arguments.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(", ");
+    }
 
-        protected override void ExitVariableDefinition(PrinterContext context, VariableDefinition variableDefinition)
-        {
-            if (context.Parent is VariableDefinitions)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(", ");
-            }
-        }
+    protected override void ExitArguments(PrinterContext context, Arguments arguments)
+    {
+        if (arguments.Count > 0) context.Append(')');
+    }
 
-        protected override void EnterVariableDefinitions(PrinterContext context, VariableDefinitions variableDefinition)
-        {
-            context.Append('(');
-        }
+    protected override void EnterVariable(PrinterContext context, Variable variable)
+    {
+        context.Append($"${variable.Name.Value}");
 
-        protected override void ExitVariableDefinitions(PrinterContext context, VariableDefinitions variableDefinition)
-        {
-            context.Append(')');
-        }
+        if (context.Parent is VariableDefinition definition) context.Append(": ");
+    }
 
-        protected override void EnterInlineFragment(PrinterContext context, InlineFragment inlineFragment)
-        {
-            context.Append("... ");
+    protected override void EnterDirective(PrinterContext context, Directive directive)
+    {
+        context.Append($"@{directive.Name.Value}");
+    }
 
-            if (inlineFragment.TypeCondition != null)
-                context.Append("on ");
-        }
+    protected override void ExitDirective(PrinterContext context, Directive directive)
+    {
+        if (context.Parent is Directives)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(' ');
+    }
 
-        protected override void EnterSelectionSet(PrinterContext context, SelectionSet selectionSet)
-        {
-            context.Append(" { ");
-        }
+    protected override void EnterDefaultValue(PrinterContext context, DefaultValue defaultValue)
+    {
+        if (defaultValue.Value.Kind != NodeKind.NullValue)
+            context.Append(" = ");
+    }
 
-        protected override void ExitSelectionSet(PrinterContext context, SelectionSet selectionSet)
-        {
-            context.Append(" } ");
-        }
+    protected override void ExitVariableDefinition(PrinterContext context, VariableDefinition variableDefinition)
+    {
+        if (context.Parent is VariableDefinitions)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(", ");
+    }
 
-        protected override void EnterDirectives(PrinterContext context, Directives directives)
-        {
-            if (context.Parent != null)
-                context.Append(' ');
-        }
+    protected override void EnterVariableDefinitions(PrinterContext context, VariableDefinitions variableDefinition)
+    {
+        context.Append('(');
+    }
 
-        protected override void EnterFieldSelection(PrinterContext context, FieldSelection fieldSelection)
-        {
-            if (fieldSelection.Alias != default)
-            {
-                context.Append(fieldSelection.Alias);
-                context.Append(": ");
-            }
-
-            context.Append($"{fieldSelection.Name}");
-
-            if (context.Parent is SelectionSet)
-            {
-                if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
-                    context.Append(' ');
-            }
-        }
+    protected override void ExitVariableDefinitions(PrinterContext context, VariableDefinitions variableDefinition)
+    {
+        context.Append(')');
+    }
 
-        protected override void EnterFragmentDefinition(PrinterContext context, FragmentDefinition fragmentDefinition)
-        {
-            context.Append("fragment");
-            context.Append(' ');
-            context.Append(fragmentDefinition.FragmentName);
+    protected override void EnterInlineFragment(PrinterContext context, InlineFragment inlineFragment)
+    {
+        context.Append("... ");
 
-            context.Append(' ');
-            context.Append("on");
-            context.Append(' ');
-        }
+        if (inlineFragment.TypeCondition != null)
+            context.Append("on ");
+    }
 
-        protected override void EnterFragmentSpread(PrinterContext context, FragmentSpread fragmentSpread)
-        {
-            context.Append("...");
-            context.Append(fragmentSpread.FragmentName);
-        }
+    protected override void EnterSelectionSet(PrinterContext context, SelectionSet selectionSet)
+    {
+        context.Append(" { ");
+    }
 
-        protected override void EnterOperationDefinition(PrinterContext context, OperationDefinition operationDefinition)
-        {
-            if (!operationDefinition.IsShort)
-                context.Append(operationDefinition.Operation.ToString().ToLowerInvariant());
-        }
+    protected override void ExitSelectionSet(PrinterContext context, SelectionSet selectionSet)
+    {
+        context.Append(" } ");
+    }
 
-        protected override void ExitOperationDefinition(PrinterContext context, OperationDefinition operationDefinition)
+    protected override void EnterDirectives(PrinterContext context, Directives directives)
+    {
+        if (context.Parent != null)
+            context.Append(' ');
+    }
+
+    protected override void EnterFieldSelection(PrinterContext context, FieldSelection fieldSelection)
+    {
+        if (fieldSelection.Alias != default)
         {
-            if (context.Parent is ICollectionNode<OperationDefinition>)
-            {
-                if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
-                    context.Append(" ");
-            }
+            context.Append(fieldSelection.Alias);
+            context.Append(": ");
         }
 
-        protected override void EnterDirectiveDefinition(PrinterContext context, DirectiveDefinition directiveDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(directiveDefinition.Description);
-            context.Append("directive");
-            context.Append(' ');
-            context.Append($"@{directiveDefinition.Name}");
+        context.Append($"{fieldSelection.Name}");
 
-            if (directiveDefinition.IsRepeatable)
-            {
+        if (context.Parent is SelectionSet)
+            if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
                 context.Append(' ');
-                context.Append("repeatable");
-            }
-        }
+    }
 
-        protected override void EnterArgumentsDefinition(PrinterContext context, ArgumentsDefinition argumentsDefinition)
-        {
-            if (argumentsDefinition.Count > 0)
-                context.Append('(');
-        }
+    protected override void EnterFragmentDefinition(PrinterContext context, FragmentDefinition fragmentDefinition)
+    {
+        context.Append("fragment");
+        context.Append(' ');
+        context.Append(fragmentDefinition.FragmentName);
 
-        protected override void EnterInputValueDefinition(PrinterContext context, InputValueDefinition inputValueDefinition)
-        {
-            context.AppendDescription(inputValueDefinition.Description);
-            context.Append(inputValueDefinition.Name);
-            context.Append(": ");
-        }
+        context.Append(' ');
+        context.Append("on");
+        context.Append(' ');
+    }
 
-        protected override void ExitInputValueDefinition(PrinterContext context, InputValueDefinition inputValueDefinition)
-        {
-            if (context.Parent is ArgumentsDefinition)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(", ");
-            }
-
-            if (context.Parent is InputFieldsDefinition)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(" ");
-            }
-        }
+    protected override void EnterFragmentSpread(PrinterContext context, FragmentSpread fragmentSpread)
+    {
+        context.Append("...");
+        context.Append(fragmentSpread.FragmentName);
+    }
 
-        protected override void ExitArgumentsDefinition(PrinterContext context, ArgumentsDefinition argumentsDefinition)
-        {
-            if (argumentsDefinition.Count > 0)
-                context.Append(")");
+    protected override void EnterOperationDefinition(PrinterContext context, OperationDefinition operationDefinition)
+    {
+        if (!operationDefinition.IsShort)
+            context.Append(operationDefinition.Operation.ToString().ToLowerInvariant());
+    }
 
-            if (context.Parent is FieldDefinition)
-            {
-                context.Append(": ");
-            }
-        }
+    protected override void ExitOperationDefinition(PrinterContext context, OperationDefinition operationDefinition)
+    {
+        if (context.Parent is ICollectionNode<OperationDefinition>)
+            if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
+                context.Append(" ");
+    }
+
+    protected override void EnterDirectiveDefinition(PrinterContext context, DirectiveDefinition directiveDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(directiveDefinition.Description);
+        context.Append("directive");
+        context.Append(' ');
+        context.Append($"@{directiveDefinition.Name}");
 
-        protected override void ExitDirectiveDefinition(PrinterContext context, DirectiveDefinition directiveDefinition)
+        if (directiveDefinition.IsRepeatable)
         {
-            context.Append(" on");
             context.Append(' ');
+            context.Append("repeatable");
+        }
+    }
 
-            var locations = directiveDefinition.DirectiveLocations;
-            for (var i = 0; i < locations.Count; i++)
-            {
-                var location = locations[i];
+    protected override void EnterArgumentsDefinition(PrinterContext context, ArgumentsDefinition argumentsDefinition)
+    {
+        if (argumentsDefinition.Count > 0)
+            context.Append('(');
+    }
 
-                context.Append(location);
+    protected override void EnterInputValueDefinition(PrinterContext context, InputValueDefinition inputValueDefinition)
+    {
+        context.AppendDescription(inputValueDefinition.Description);
+        context.Append(inputValueDefinition.Name);
+        context.Append(": ");
+    }
 
-                if (i != locations.Count - 1 && location.Length > 1)
-                    context.Append(" | ");
-            }
-        }
+    protected override void ExitInputValueDefinition(PrinterContext context, InputValueDefinition inputValueDefinition)
+    {
+        if (context.Parent is ArgumentsDefinition)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(", ");
 
-        protected override void EnterScalarDefinition(PrinterContext context, ScalarDefinition scalarDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(scalarDefinition.Description);
-            context.Append("scalar");
-            context.Append(' ');
-            context.Append(scalarDefinition.Name);
-        }
+        if (context.Parent is InputFieldsDefinition)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(" ");
+    }
 
-        protected override void EnterFieldDefinition(PrinterContext context, FieldDefinition fieldDefinition)
-        {
-            context.AppendDescription(fieldDefinition.Description);
-            context.Append(fieldDefinition.Name);
+    protected override void ExitArgumentsDefinition(PrinterContext context, ArgumentsDefinition argumentsDefinition)
+    {
+        if (argumentsDefinition.Count > 0)
+            context.Append(")");
 
-            if (fieldDefinition.Arguments == null || fieldDefinition.Arguments.Count == 0)
-                context.Append(": ");
-        }
+        if (context.Parent is FieldDefinition) context.Append(": ");
+    }
 
-        protected override void ExitFieldDefinition(PrinterContext context, FieldDefinition fieldDefinition)
-        {
-            if (context.Parent is FieldsDefinition)
-            {
-                if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
-                    context.Append(" ");
-            }
-        }
+    protected override void ExitDirectiveDefinition(PrinterContext context, DirectiveDefinition directiveDefinition)
+    {
+        context.Append(" on");
+        context.Append(' ');
 
-        protected override void EnterImplementsInterfaces(PrinterContext context, ImplementsInterfaces implementsInterfaces)
+        var locations = directiveDefinition.DirectiveLocations;
+        for (var i = 0; i < locations.Count; i++)
         {
-            if (implementsInterfaces.Count == 0)
-                return;
+            var location = locations[i];
 
-            context.Append("implements ");
-        }
+            context.Append(location);
 
-        protected override void EnterObjectDefinition(PrinterContext context, ObjectDefinition objectDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(objectDefinition.Description);
-            context.Append("type ");
-            context.Append(objectDefinition.Name);
-            context.Append(" ");
+            if (i != locations.Count - 1 && location.Length > 1)
+                context.Append(" | ");
         }
+    }
 
-        protected override void EnterFieldsDefinition(PrinterContext context, FieldsDefinition fieldsDefinition)
-        {
-            context.Append(" { ");
-        }
+    protected override void EnterScalarDefinition(PrinterContext context, ScalarDefinition scalarDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(scalarDefinition.Description);
+        context.Append("scalar");
+        context.Append(' ');
+        context.Append(scalarDefinition.Name);
+    }
 
-        protected override void ExitFieldsDefinition(PrinterContext context, FieldsDefinition fieldsDefinition)
-        {
-            context.Append(" } ");
-        }
+    protected override void EnterFieldDefinition(PrinterContext context, FieldDefinition fieldDefinition)
+    {
+        context.AppendDescription(fieldDefinition.Description);
+        context.Append(fieldDefinition.Name);
 
-        protected override void EnterInterfaceDefinition(PrinterContext context, InterfaceDefinition interfaceDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(interfaceDefinition.Description);
-            context.Append("interface ");
-            context.Append(interfaceDefinition.Name);
-            context.Append(" ");
-        }
+        if (fieldDefinition.Arguments == null || fieldDefinition.Arguments.Count == 0)
+            context.Append(": ");
+    }
 
-        protected override void EnterUnionDefinition(PrinterContext context, UnionDefinition unionDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(unionDefinition.Description);
-            context.Append("union ");
-            context.Append(unionDefinition.Name);
-            context.Append(" ");
-        }
+    protected override void ExitFieldDefinition(PrinterContext context, FieldDefinition fieldDefinition)
+    {
+        if (context.Parent is FieldsDefinition)
+            if (context.CurrentArray?.Count > 0 && !context.CurrentArray.IsLast)
+                context.Append(" ");
+    }
 
-        protected override void EnterUnionMemberTypes(PrinterContext context, UnionMemberTypes unionMemberTypes)
-        {
-            context.Append(" = ");
-        }
+    protected override void EnterImplementsInterfaces(PrinterContext context, ImplementsInterfaces implementsInterfaces)
+    {
+        if (implementsInterfaces.Count == 0)
+            return;
 
-        protected override void ExitUnionMemberTypes(PrinterContext context, UnionMemberTypes unionMemberTypes)
-        {
-            context.Append(" ");
-        }
+        context.Append("implements ");
+    }
 
-        protected override void EnterEnumDefinition(PrinterContext context, EnumDefinition enumDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(enumDefinition.Description);
-            context.Append("enum ");
-            context.Append(enumDefinition.Name);
-            context.Append(" ");
-        }
+    protected override void EnterObjectDefinition(PrinterContext context, ObjectDefinition objectDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(objectDefinition.Description);
+        context.Append("type ");
+        context.Append(objectDefinition.Name);
+        context.Append(" ");
+    }
 
-        protected override void EnterEnumValuesDefinition(PrinterContext context, EnumValuesDefinition enumValuesDefinition)
-        {
-            context.Append(" { ");
-        }
+    protected override void EnterFieldsDefinition(PrinterContext context, FieldsDefinition fieldsDefinition)
+    {
+        context.Append(" { ");
+    }
 
-        protected override void EnterEnumValueDefinition(PrinterContext context, EnumValueDefinition enumValueDefinition)
-        {
-            context.AppendDescription(enumValueDefinition.Description);
-        }
+    protected override void ExitFieldsDefinition(PrinterContext context, FieldsDefinition fieldsDefinition)
+    {
+        context.Append(" } ");
+    }
 
-        protected override void ExitEnumValuesDefinition(PrinterContext context, EnumValuesDefinition enumValuesDefinition)
-        {
-            context.Append(" } ");
-        }
+    protected override void EnterInterfaceDefinition(PrinterContext context, InterfaceDefinition interfaceDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(interfaceDefinition.Description);
+        context.Append("interface ");
+        context.Append(interfaceDefinition.Name);
+        context.Append(" ");
+    }
 
-        protected override void ExitEnumValueDefinition(PrinterContext context, EnumValueDefinition enumValueDefinition)
-        {
-            context.Append(" ");
-        }
+    protected override void EnterUnionDefinition(PrinterContext context, UnionDefinition unionDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(unionDefinition.Description);
+        context.Append("union ");
+        context.Append(unionDefinition.Name);
+        context.Append(" ");
+    }
 
-        protected override void EnterInputObjectDefinition(PrinterContext context, InputObjectDefinition inputObjectDefinition)
-        {
-            context.Append(' ');
-            context.AppendDescription(inputObjectDefinition.Description);
-            context.Append("input ");
-            context.Append(inputObjectDefinition.Name);
-            context.Append(" ");
-        }
+    protected override void EnterUnionMemberTypes(PrinterContext context, UnionMemberTypes unionMemberTypes)
+    {
+        context.Append(" = ");
+    }
 
-        protected override void EnterInputFieldsDefinition(PrinterContext context, InputFieldsDefinition inputFieldsDefinition)
-        {
-            context.Append(" { ");
-        }
+    protected override void ExitUnionMemberTypes(PrinterContext context, UnionMemberTypes unionMemberTypes)
+    {
+        context.Append(" ");
+    }
 
-        protected override void ExitInputFieldsDefinition(PrinterContext context, InputFieldsDefinition inputFieldsDefinition)
-        {
-            context.Append(" } ");
-        }
+    protected override void EnterEnumDefinition(PrinterContext context, EnumDefinition enumDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(enumDefinition.Description);
+        context.Append("enum ");
+        context.Append(enumDefinition.Name);
+        context.Append(" ");
+    }
 
-        protected override void EnterSchemaDefinition(PrinterContext context, SchemaDefinition schemaDefinition)
-        {
-            if (schemaDefinition.Operations.Any() || schemaDefinition.Directives?.Any() == true)
-            {
-                context.Append(' ');
-                context.AppendDescription(schemaDefinition.Description);
-                context.Append("schema ");
-            }
-        }
+    protected override void EnterEnumValuesDefinition(PrinterContext context, EnumValuesDefinition enumValuesDefinition)
+    {
+        context.Append(" { ");
+    }
 
-        protected override void EnterRootOperationTypeDefinitions(PrinterContext context,
-            RootOperationTypeDefinitions rootOperationTypeDefinitions)
-        {
-            if (rootOperationTypeDefinitions.Any())
-            {
-                context.Append(" { ");
-            }
-        }
+    protected override void EnterEnumValueDefinition(PrinterContext context, EnumValueDefinition enumValueDefinition)
+    {
+        context.AppendDescription(enumValueDefinition.Description);
+    }
 
-        protected override void EnterRootOperationTypeDefinition(PrinterContext context, RootOperationTypeDefinition rootOperationTypeDefinition)
-        {
-            switch (rootOperationTypeDefinition.OperationType)
-            {
-                case OperationType.Query:
-                    context.Append("query: ");
-                    break;
-                case OperationType.Mutation:
-                    context.Append("mutation: ");
-                    break;
-                case OperationType.Subscription:
-                    context.Append("subscription: ");
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException();
-            }
-        }
+    protected override void ExitEnumValuesDefinition(PrinterContext context, EnumValuesDefinition enumValuesDefinition)
+    {
+        context.Append(" } ");
+    }
 
-        protected override void ExitRootOperationTypeDefinition(PrinterContext context, RootOperationTypeDefinition rootOperationTypeDefinition)
-        {
-            if (context.Parent is RootOperationTypeDefinitions)
-            {
-                if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
-                    context.Append(" ");
-            }
-        }
+    protected override void ExitEnumValueDefinition(PrinterContext context, EnumValueDefinition enumValueDefinition)
+    {
+        context.Append(" ");
+    }
+
+    protected override void EnterInputObjectDefinition(PrinterContext context,
+        InputObjectDefinition inputObjectDefinition)
+    {
+        context.Append(' ');
+        context.AppendDescription(inputObjectDefinition.Description);
+        context.Append("input ");
+        context.Append(inputObjectDefinition.Name);
+        context.Append(" ");
+    }
+
+    protected override void EnterInputFieldsDefinition(PrinterContext context,
+        InputFieldsDefinition inputFieldsDefinition)
+    {
+        context.Append(" { ");
+    }
 
-        protected override void ExitRootOperationTypeDefinitions(PrinterContext context,
-            RootOperationTypeDefinitions rootOperationTypeDefinitions)
+    protected override void ExitInputFieldsDefinition(PrinterContext context,
+        InputFieldsDefinition inputFieldsDefinition)
+    {
+        context.Append(" } ");
+    }
+
+    protected override void EnterSchemaDefinition(PrinterContext context, SchemaDefinition schemaDefinition)
+    {
+        if (schemaDefinition.Operations.Any() || schemaDefinition.Directives?.Any() == true)
         {
-            if (rootOperationTypeDefinitions.Any())
-            {
-                context.Append(" } ");
-            }
+            context.Append(' ');
+            context.AppendDescription(schemaDefinition.Description);
+            context.Append("schema ");
         }
+    }
 
-        protected override void EnterTypeExtension(PrinterContext context, TypeExtension typeExtension)
-        {
-            context.Append(" extend ");
+    protected override void EnterRootOperationTypeDefinitions(PrinterContext context,
+        RootOperationTypeDefinitions rootOperationTypeDefinitions)
+    {
+        if (rootOperationTypeDefinitions.Any()) context.Append(" { ");
+    }
+
+    protected override void EnterRootOperationTypeDefinition(PrinterContext context,
+        RootOperationTypeDefinition rootOperationTypeDefinition)
+    {
+        switch (rootOperationTypeDefinition.OperationType)
+        {
+            case OperationType.Query:
+                context.Append("query: ");
+                break;
+            case OperationType.Mutation:
+                context.Append("mutation: ");
+                break;
+            case OperationType.Subscription:
+                context.Append("subscription: ");
+                break;
+            default:
+                throw new ArgumentOutOfRangeException();
         }
     }
+
+    protected override void ExitRootOperationTypeDefinition(PrinterContext context,
+        RootOperationTypeDefinition rootOperationTypeDefinition)
+    {
+        if (context.Parent is RootOperationTypeDefinitions)
+            if (context.CurrentArray?.Count > 1 && !context.CurrentArray.IsLast)
+                context.Append(" ");
+    }
+
+    protected override void ExitRootOperationTypeDefinitions(PrinterContext context,
+        RootOperationTypeDefinitions rootOperationTypeDefinitions)
+    {
+        if (rootOperationTypeDefinitions.Any()) context.Append(" } ");
+    }
+
+    protected override void EnterTypeExtension(PrinterContext context, TypeExtension typeExtension)
+    {
+        context.Append(" extend ");
+    }
 }
\ No newline at end of file
diff --git a/src/graphql.language/ReadOnlyDocumentVisitorBase.cs b/src/graphql.language/ReadOnlyDocumentVisitorBase.cs
index 9d1252b14..4b15e9d63 100644
--- a/src/graphql.language/ReadOnlyDocumentVisitorBase.cs
+++ b/src/graphql.language/ReadOnlyDocumentVisitorBase.cs
@@ -2,777 +2,779 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public abstract class ReadOnlyDocumentVisitorBase<TContext> : IReadOnlyDocumentVisitor<TContext>
 {
-    public abstract class ReadOnlyDocumentVisitorBase<TContext> : IReadOnlyDocumentVisitor<TContext>
+    public virtual void EnterNode(TContext context, INode node)
     {
-        public virtual void EnterNode(TContext context, INode node)
-        {
-            //todo: should include ability to enter base value
-            if (node is ValueBase value)
-                EnterValue(context, value);
-            
-            switch (node)
-            {
-                case null:
-                    break;
-                case Argument argument:
-                    EnterArgument(context, argument);
-                    break;
-                case BooleanValue booleanValue:
-                    EnterBooleanValue(context, booleanValue);
-                    break;
-                case DefaultValue defaultValue:
-                    EnterDefaultValue(context, defaultValue);
-                    break;
-                case Directive directive:
-                    EnterDirective(context, directive);
-                    break;
-                case Directives directives:
-                    EnterDirectives(context, directives);
-                    break;
-                case EnumValue enumValue:
-                    EnterEnumValue(context, enumValue);
-                    break;
-                case ExecutableDocument executableDocument:
-                    EnterExecutableDocument(context, executableDocument);
-                    break;
-                case FieldSelection fieldSelection:
-                    EnterFieldSelection(context, fieldSelection);
-                    break;
-                case FloatValue floatValue:
-                    EnterFloatValue(context, floatValue);
-                    break;
-                case FragmentDefinition fragmentDefinition:
-                    EnterFragmentDefinition(context, fragmentDefinition);
-                    break;
-                case FragmentDefinitions fragmentDefinitions:
-                    EnterFragmentDefinitions(context, fragmentDefinitions);
-                    break;
-                case FragmentSpread fragmentSpread:
-                    EnterFragmentSpread(context, fragmentSpread);
-                    break;
-                case InlineFragment inlineFragment:
-                    EnterInlineFragment(context, inlineFragment);
-                    break;
-                case IntValue intValue:
-                    EnterIntValue(context, intValue);
-                    break;
-                case ListType listType:
-                    EnterListType(context, listType);
-                    break;
-                case ListValue listValue:
-                    EnterListValue(context, listValue);
-                    break;
-                case NamedType namedType:
-                    EnterNamedType(context, namedType);
-                    break;
-                case NonNullType nonNullType:
-                    EnterNonNullType(context, nonNullType);
-                    break;
-                case NullValue nullValue:
-                    EnterNullValue(context, nullValue);
-                    break;
-                case ObjectField objectField:
-                    EnterObjectField(context, objectField);
-                    break;
-                case ObjectValue objectValue:
-                    EnterObjectValue(context, objectValue);
-                    break;
-                case OperationDefinition operationDefinition:
-                    EnterOperationDefinition(context, operationDefinition);
-                    break;
-                case OperationDefinitions operationDefinitions:
-                    EnterOperationDefinitions(context, operationDefinitions);
-                    break;
-                case SelectionSet selectionSet:
-                    EnterSelectionSet(context, selectionSet);
-                    break;
-                case StringValue stringValue:
-                    EnterStringValue(context, stringValue);
-                    break;
-                case ArgumentsDefinition argumentsDefinition:
-                    EnterArgumentsDefinition(context, argumentsDefinition);
-                    break;
-                case DirectiveDefinition directiveDefinition:
-                    EnterDirectiveDefinition(context, directiveDefinition);
-                    break;
-                case EnumDefinition enumDefinition:
-                    EnterEnumDefinition(context, enumDefinition);
-                    break;
-                case EnumValueDefinition enumValueDefinition:
-                    EnterEnumValueDefinition(context, enumValueDefinition);
-                    break;
-                case EnumValuesDefinition enumValuesDefinition:
-                    EnterEnumValuesDefinition(context, enumValuesDefinition);
-                    break;
-                case FieldDefinition fieldDefinition:
-                    EnterFieldDefinition(context, fieldDefinition);
-                    break;
-                case FieldsDefinition fieldsDefinition:
-                    EnterFieldsDefinition(context, fieldsDefinition);
-                    break;
-                case ImplementsInterfaces implementsInterfaces:
-                    EnterImplementsInterfaces(context, implementsInterfaces);
-                    break;
-                case Import import:
-                    EnterImport(context, import);
-                    break;
-                case InputObjectDefinition inputObjectDefinition:
-                    EnterInputObjectDefinition(context, inputObjectDefinition);
-                    break;
-                case InputValueDefinition inputValueDefinition:
-                    EnterInputValueDefinition(context, inputValueDefinition);
-                    break;
-                case InterfaceDefinition interfaceDefinition:
-                    EnterInterfaceDefinition(context, interfaceDefinition);
-                    break;
-                case ObjectDefinition objectDefinition:
-                    EnterObjectDefinition(context, objectDefinition);
-                    break;
-                case RootOperationTypeDefinition rootOperationTypeDefinition:
-                    EnterRootOperationTypeDefinition(context, rootOperationTypeDefinition);
-                    break;
-                case ScalarDefinition scalarDefinition:
-                    EnterScalarDefinition(context, scalarDefinition);
-                    break;
-                case SchemaDefinition schemaDefinition:
-                    EnterSchemaDefinition(context, schemaDefinition);
-                    break;
-                case SchemaExtension schemaExtension:
-                    EnterSchemaExtension(context, schemaExtension);
-                    break;
-                case UnionDefinition unionDefinition:
-                    EnterUnionDefinition(context, unionDefinition);
-                    break;
-                case UnionMemberTypes unionMemberTypes:
-                    EnterUnionMemberTypes(context, unionMemberTypes);
-                    break;
-                case TypeExtension typeExtension:
-                    EnterTypeExtension(context, typeExtension);
-                    break;
-                case TypeSystemDocument typeSystemDocument:
-                    EnterTypeSystemDocument(context, typeSystemDocument);
-                    break;
-                case Variable variable:
-                    EnterVariable(context, variable);
-                    break;
-                case VariableDefinition variableDefinition:
-                    EnterVariableDefinition(context, variableDefinition);
-                    break;
-                case VariableDefinitions variableDefinitions:
-                    EnterVariableDefinitions(context, variableDefinitions);
-                    break;
-                case Arguments arguments:
-                    EnterArguments(context, arguments);
-                    break;
-                case InputFieldsDefinition inputFieldsDefinition:
-                    EnterInputFieldsDefinition(context, inputFieldsDefinition);
-                    break;
-                case RootOperationTypeDefinitions rootOperationTypeDefinitions:
-                    EnterRootOperationTypeDefinitions(context, rootOperationTypeDefinitions);
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(node));
-            }
+        //todo: should include ability to enter base value
+        if (node is ValueBase value)
+            EnterValue(context, value);
+
+        switch (node)
+        {
+            case null:
+                break;
+            case Argument argument:
+                EnterArgument(context, argument);
+                break;
+            case BooleanValue booleanValue:
+                EnterBooleanValue(context, booleanValue);
+                break;
+            case DefaultValue defaultValue:
+                EnterDefaultValue(context, defaultValue);
+                break;
+            case Directive directive:
+                EnterDirective(context, directive);
+                break;
+            case Directives directives:
+                EnterDirectives(context, directives);
+                break;
+            case EnumValue enumValue:
+                EnterEnumValue(context, enumValue);
+                break;
+            case ExecutableDocument executableDocument:
+                EnterExecutableDocument(context, executableDocument);
+                break;
+            case FieldSelection fieldSelection:
+                EnterFieldSelection(context, fieldSelection);
+                break;
+            case FloatValue floatValue:
+                EnterFloatValue(context, floatValue);
+                break;
+            case FragmentDefinition fragmentDefinition:
+                EnterFragmentDefinition(context, fragmentDefinition);
+                break;
+            case FragmentDefinitions fragmentDefinitions:
+                EnterFragmentDefinitions(context, fragmentDefinitions);
+                break;
+            case FragmentSpread fragmentSpread:
+                EnterFragmentSpread(context, fragmentSpread);
+                break;
+            case InlineFragment inlineFragment:
+                EnterInlineFragment(context, inlineFragment);
+                break;
+            case IntValue intValue:
+                EnterIntValue(context, intValue);
+                break;
+            case ListType listType:
+                EnterListType(context, listType);
+                break;
+            case ListValue listValue:
+                EnterListValue(context, listValue);
+                break;
+            case NamedType namedType:
+                EnterNamedType(context, namedType);
+                break;
+            case NonNullType nonNullType:
+                EnterNonNullType(context, nonNullType);
+                break;
+            case NullValue nullValue:
+                EnterNullValue(context, nullValue);
+                break;
+            case ObjectField objectField:
+                EnterObjectField(context, objectField);
+                break;
+            case ObjectValue objectValue:
+                EnterObjectValue(context, objectValue);
+                break;
+            case OperationDefinition operationDefinition:
+                EnterOperationDefinition(context, operationDefinition);
+                break;
+            case OperationDefinitions operationDefinitions:
+                EnterOperationDefinitions(context, operationDefinitions);
+                break;
+            case SelectionSet selectionSet:
+                EnterSelectionSet(context, selectionSet);
+                break;
+            case StringValue stringValue:
+                EnterStringValue(context, stringValue);
+                break;
+            case ArgumentsDefinition argumentsDefinition:
+                EnterArgumentsDefinition(context, argumentsDefinition);
+                break;
+            case DirectiveDefinition directiveDefinition:
+                EnterDirectiveDefinition(context, directiveDefinition);
+                break;
+            case EnumDefinition enumDefinition:
+                EnterEnumDefinition(context, enumDefinition);
+                break;
+            case EnumValueDefinition enumValueDefinition:
+                EnterEnumValueDefinition(context, enumValueDefinition);
+                break;
+            case EnumValuesDefinition enumValuesDefinition:
+                EnterEnumValuesDefinition(context, enumValuesDefinition);
+                break;
+            case FieldDefinition fieldDefinition:
+                EnterFieldDefinition(context, fieldDefinition);
+                break;
+            case FieldsDefinition fieldsDefinition:
+                EnterFieldsDefinition(context, fieldsDefinition);
+                break;
+            case ImplementsInterfaces implementsInterfaces:
+                EnterImplementsInterfaces(context, implementsInterfaces);
+                break;
+            case Import import:
+                EnterImport(context, import);
+                break;
+            case InputObjectDefinition inputObjectDefinition:
+                EnterInputObjectDefinition(context, inputObjectDefinition);
+                break;
+            case InputValueDefinition inputValueDefinition:
+                EnterInputValueDefinition(context, inputValueDefinition);
+                break;
+            case InterfaceDefinition interfaceDefinition:
+                EnterInterfaceDefinition(context, interfaceDefinition);
+                break;
+            case ObjectDefinition objectDefinition:
+                EnterObjectDefinition(context, objectDefinition);
+                break;
+            case RootOperationTypeDefinition rootOperationTypeDefinition:
+                EnterRootOperationTypeDefinition(context, rootOperationTypeDefinition);
+                break;
+            case ScalarDefinition scalarDefinition:
+                EnterScalarDefinition(context, scalarDefinition);
+                break;
+            case SchemaDefinition schemaDefinition:
+                EnterSchemaDefinition(context, schemaDefinition);
+                break;
+            case SchemaExtension schemaExtension:
+                EnterSchemaExtension(context, schemaExtension);
+                break;
+            case UnionDefinition unionDefinition:
+                EnterUnionDefinition(context, unionDefinition);
+                break;
+            case UnionMemberTypes unionMemberTypes:
+                EnterUnionMemberTypes(context, unionMemberTypes);
+                break;
+            case TypeExtension typeExtension:
+                EnterTypeExtension(context, typeExtension);
+                break;
+            case TypeSystemDocument typeSystemDocument:
+                EnterTypeSystemDocument(context, typeSystemDocument);
+                break;
+            case Variable variable:
+                EnterVariable(context, variable);
+                break;
+            case VariableDefinition variableDefinition:
+                EnterVariableDefinition(context, variableDefinition);
+                break;
+            case VariableDefinitions variableDefinitions:
+                EnterVariableDefinitions(context, variableDefinitions);
+                break;
+            case Arguments arguments:
+                EnterArguments(context, arguments);
+                break;
+            case InputFieldsDefinition inputFieldsDefinition:
+                EnterInputFieldsDefinition(context, inputFieldsDefinition);
+                break;
+            case RootOperationTypeDefinitions rootOperationTypeDefinitions:
+                EnterRootOperationTypeDefinitions(context, rootOperationTypeDefinitions);
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(node));
         }
+    }
 
-        protected virtual void EnterRootOperationTypeDefinitions(TContext context, RootOperationTypeDefinitions rootOperationTypeDefinitions)
-        {
-        }
+    public virtual void ExitNode(TContext context, INode node)
+    {
+        switch (node)
+        {
+            case null:
+                break;
+            case Argument argument:
+                ExitArgument(context, argument);
+                break;
+            case BooleanValue booleanValue:
+                ExitBooleanValue(context, booleanValue);
+                break;
+            case DefaultValue defaultValue:
+                ExitDefaultValue(context, defaultValue);
+                break;
+            case Directive directive:
+                ExitDirective(context, directive);
+                break;
+            case Directives directives:
+                ExitDirectives(context, directives);
+                break;
+            case EnumValue enumValue:
+                ExitEnumValue(context, enumValue);
+                break;
+            case ExecutableDocument executableDocument:
+                ExitExecutableDocument(context, executableDocument);
+                break;
+            case FieldSelection fieldSelection:
+                ExitFieldSelection(context, fieldSelection);
+                break;
+            case FloatValue floatValue:
+                ExitFloatValue(context, floatValue);
+                break;
+            case FragmentDefinition fragmentDefinition:
+                ExitFragmentDefinition(context, fragmentDefinition);
+                break;
+            case FragmentDefinitions fragmentDefinitions:
+                ExitFragmentDefinitions(context, fragmentDefinitions);
+                break;
+            case FragmentSpread fragmentSpread:
+                ExitFragmentSpread(context, fragmentSpread);
+                break;
+            case InlineFragment inlineFragment:
+                ExitInlineFragment(context, inlineFragment);
+                break;
+            case IntValue intValue:
+                ExitIntValue(context, intValue);
+                break;
+            case ListType listType:
+                ExitListType(context, listType);
+                break;
+            case ListValue listValue:
+                ExitListValue(context, listValue);
+                break;
+            case NamedType namedType:
+                ExitNamedType(context, namedType);
+                break;
+            case NonNullType nonNullType:
+                ExitNonNullType(context, nonNullType);
+                break;
+            case NullValue nullValue:
+                ExitNullValue(context, nullValue);
+                break;
+            case ObjectField objectField:
+                ExitObjectField(context, objectField);
+                break;
+            case ObjectValue objectValue:
+                ExitObjectValue(context, objectValue);
+                break;
+            case OperationDefinition operationDefinition:
+                ExitOperationDefinition(context, operationDefinition);
+                break;
+            case OperationDefinitions operationDefinitions:
+                ExitOperationDefinitions(context, operationDefinitions);
+                break;
+            case SelectionSet selectionSet:
+                ExitSelectionSet(context, selectionSet);
+                break;
+            case StringValue stringValue:
+                ExitStringValue(context, stringValue);
+                break;
+            case ArgumentsDefinition argumentsDefinition:
+                ExitArgumentsDefinition(context, argumentsDefinition);
+                break;
+            case DirectiveDefinition directiveDefinition:
+                ExitDirectiveDefinition(context, directiveDefinition);
+                break;
+            case EnumDefinition enumDefinition:
+                ExitEnumDefinition(context, enumDefinition);
+                break;
+            case EnumValueDefinition enumValueDefinition:
+                ExitEnumValueDefinition(context, enumValueDefinition);
+                break;
+            case EnumValuesDefinition enumValuesDefinition:
+                ExitEnumValuesDefinition(context, enumValuesDefinition);
+                break;
+            case FieldDefinition fieldDefinition:
+                ExitFieldDefinition(context, fieldDefinition);
+                break;
+            case FieldsDefinition fieldsDefinition:
+                ExitFieldsDefinition(context, fieldsDefinition);
+                break;
+            case ImplementsInterfaces implementsInterfaces:
+                ExitImplementsInterfaces(context, implementsInterfaces);
+                break;
+            case Import import:
+                ExitImport(context, import);
+                break;
+            case InputObjectDefinition inputObjectDefinition:
+                ExitInputObjectDefinition(context, inputObjectDefinition);
+                break;
+            case InputValueDefinition inputValueDefinition:
+                ExitInputValueDefinition(context, inputValueDefinition);
+                break;
+            case InterfaceDefinition interfaceDefinition:
+                ExitInterfaceDefinition(context, interfaceDefinition);
+                break;
+            case ObjectDefinition objectDefinition:
+                ExitObjectDefinition(context, objectDefinition);
+                break;
+            case RootOperationTypeDefinition rootOperationTypeDefinition:
+                ExitRootOperationTypeDefinition(context, rootOperationTypeDefinition);
+                break;
+            case ScalarDefinition scalarDefinition:
+                ExitScalarDefinition(context, scalarDefinition);
+                break;
+            case SchemaDefinition schemaDefinition:
+                ExitSchemaDefinition(context, schemaDefinition);
+                break;
+            case SchemaExtension schemaExtension:
+                ExitSchemaExtension(context, schemaExtension);
+                break;
+            case UnionDefinition unionDefinition:
+                ExitUnionDefinition(context, unionDefinition);
+                break;
+            case UnionMemberTypes unionMemberTypes:
+                ExitUnionMemberTypes(context, unionMemberTypes);
+                break;
+            case TypeExtension typeExtension:
+                ExitTypeExtension(context, typeExtension);
+                break;
+            case TypeSystemDocument typeSystemDocument:
+                ExitTypeSystemDocument(context, typeSystemDocument);
+                break;
+            case Variable variable:
+                ExitVariable(context, variable);
+                break;
+            case VariableDefinition variableDefinition:
+                ExitVariableDefinition(context, variableDefinition);
+                break;
+            case VariableDefinitions variableDefinitions:
+                ExitVariableDefinitions(context, variableDefinitions);
+                break;
+            case InputFieldsDefinition inputFieldsDefinition:
+                ExitInputFieldsDefinition(context, inputFieldsDefinition);
+                break;
+            case Arguments arguments:
+                ExitArguments(context, arguments);
+                break;
+            case RootOperationTypeDefinitions rootOperationTypeDefinitions:
+                ExitRootOperationTypeDefinitions(context, rootOperationTypeDefinitions);
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(node));
+        }
+
+        //todo: should include ability to exit base value
+        if (node is ValueBase value)
+            ExitValue(context, value);
+    }
 
-        protected virtual void EnterInputFieldsDefinition(TContext context, InputFieldsDefinition inputFieldsDefinition)
-        {
-        }
+    protected virtual void EnterRootOperationTypeDefinitions(TContext context,
+        RootOperationTypeDefinitions rootOperationTypeDefinitions)
+    {
+    }
 
-        protected virtual void EnterValue(TContext context, ValueBase value)
-        {
-        }
+    protected virtual void EnterInputFieldsDefinition(TContext context, InputFieldsDefinition inputFieldsDefinition)
+    {
+    }
 
-        protected virtual void EnterDirectives(TContext context, Directives directives)
-        {
-        }
+    protected virtual void EnterValue(TContext context, ValueBase value)
+    {
+    }
 
-        protected virtual void EnterFragmentDefinitions(TContext context, FragmentDefinitions fragmentDefinitions)
-        {
-        }
+    protected virtual void EnterDirectives(TContext context, Directives directives)
+    {
+    }
 
-        protected virtual void EnterOperationDefinitions(TContext context, OperationDefinitions operationDefinitions)
-        {
-        }
+    protected virtual void EnterFragmentDefinitions(TContext context, FragmentDefinitions fragmentDefinitions)
+    {
+    }
 
-        protected virtual void EnterArgumentsDefinition(TContext context, ArgumentsDefinition argumentsDefinition)
-        {
-        }
+    protected virtual void EnterOperationDefinitions(TContext context, OperationDefinitions operationDefinitions)
+    {
+    }
 
-        protected virtual void EnterEnumValuesDefinition(TContext context, EnumValuesDefinition enumValuesDefinition)
-        {
-        }
+    protected virtual void EnterArgumentsDefinition(TContext context, ArgumentsDefinition argumentsDefinition)
+    {
+    }
 
-        protected virtual void EnterFieldsDefinition(TContext context, FieldsDefinition fieldsDefinition)
-        {
-        }
+    protected virtual void EnterEnumValuesDefinition(TContext context, EnumValuesDefinition enumValuesDefinition)
+    {
+    }
 
-        protected virtual void EnterImplementsInterfaces(TContext context, ImplementsInterfaces implementsInterfaces)
-        {
-        }
+    protected virtual void EnterFieldsDefinition(TContext context, FieldsDefinition fieldsDefinition)
+    {
+    }
 
-        protected virtual void EnterRootOperationTypeDefinition(TContext context, RootOperationTypeDefinition rootOperationTypeDefinition)
-        {
-        }
+    protected virtual void EnterImplementsInterfaces(TContext context, ImplementsInterfaces implementsInterfaces)
+    {
+    }
 
-        protected virtual void EnterUnionMemberTypes(TContext context, UnionMemberTypes unionMemberTypes)
-        {
-        }
+    protected virtual void EnterRootOperationTypeDefinition(TContext context,
+        RootOperationTypeDefinition rootOperationTypeDefinition)
+    {
+    }
 
-        protected virtual void EnterVariableDefinitions(TContext context, VariableDefinitions variableDefinitions)
-        {
-        }
+    protected virtual void EnterUnionMemberTypes(TContext context, UnionMemberTypes unionMemberTypes)
+    {
+    }
 
-        protected virtual void EnterArguments(TContext context, Arguments arguments)
-        {
-        }
+    protected virtual void EnterVariableDefinitions(TContext context, VariableDefinitions variableDefinitions)
+    {
+    }
 
-        protected virtual void EnterImport(TContext context, Import import)
-        {
-        }
+    protected virtual void EnterArguments(TContext context, Arguments arguments)
+    {
+    }
 
-        protected virtual void EnterArgument(TContext context, Argument argument)
-        {
-        }
+    protected virtual void EnterImport(TContext context, Import import)
+    {
+    }
 
-        protected virtual void EnterBooleanValue(TContext context, BooleanValue booleanValue)
-        {
-        }
+    protected virtual void EnterArgument(TContext context, Argument argument)
+    {
+    }
 
-        protected virtual void EnterDefaultValue(TContext context, DefaultValue defaultValue)
-        {
-        }
+    protected virtual void EnterBooleanValue(TContext context, BooleanValue booleanValue)
+    {
+    }
 
-        protected virtual void EnterDirective(TContext context, Directive directive)
-        {
-        }
+    protected virtual void EnterDefaultValue(TContext context, DefaultValue defaultValue)
+    {
+    }
 
-        protected virtual void EnterEnumValue(TContext context, EnumValue enumValue)
-        {
-        }
+    protected virtual void EnterDirective(TContext context, Directive directive)
+    {
+    }
 
-        protected virtual void EnterExecutableDocument(TContext context, ExecutableDocument executableDocument)
-        {
-        }
+    protected virtual void EnterEnumValue(TContext context, EnumValue enumValue)
+    {
+    }
 
-        protected virtual void EnterFieldSelection(TContext context, FieldSelection fieldSelection)
-        {
-        }
+    protected virtual void EnterExecutableDocument(TContext context, ExecutableDocument executableDocument)
+    {
+    }
 
-        protected virtual void EnterFloatValue(TContext context, FloatValue floatValue)
-        {
-        }
+    protected virtual void EnterFieldSelection(TContext context, FieldSelection fieldSelection)
+    {
+    }
 
-        protected virtual void EnterFragmentDefinition(TContext context, FragmentDefinition fragmentDefinition)
-        {
-        }
+    protected virtual void EnterFloatValue(TContext context, FloatValue floatValue)
+    {
+    }
 
-        protected virtual void EnterFragmentSpread(TContext context, FragmentSpread fragmentSpread)
-        {
-        }
+    protected virtual void EnterFragmentDefinition(TContext context, FragmentDefinition fragmentDefinition)
+    {
+    }
 
-        protected virtual void EnterInlineFragment(TContext context, InlineFragment inlineFragment)
-        {
-        }
+    protected virtual void EnterFragmentSpread(TContext context, FragmentSpread fragmentSpread)
+    {
+    }
 
-        protected virtual void EnterIntValue(TContext context, IntValue intValue)
-        {
-        }
+    protected virtual void EnterInlineFragment(TContext context, InlineFragment inlineFragment)
+    {
+    }
 
-        protected virtual void EnterListType(TContext context, ListType listType)
-        {
-        }
+    protected virtual void EnterIntValue(TContext context, IntValue intValue)
+    {
+    }
 
-        protected virtual void EnterListValue(TContext context, ListValue listValue)
-        {
-        }
+    protected virtual void EnterListType(TContext context, ListType listType)
+    {
+    }
 
-        protected virtual void EnterNamedType(TContext context, NamedType namedType)
-        {
-        }
+    protected virtual void EnterListValue(TContext context, ListValue listValue)
+    {
+    }
 
-        protected virtual void EnterNonNullType(TContext context, NonNullType nonNullType)
-        {
-        }
+    protected virtual void EnterNamedType(TContext context, NamedType namedType)
+    {
+    }
 
-        protected virtual void EnterNullValue(TContext context, NullValue nullValue)
-        {
-        }
+    protected virtual void EnterNonNullType(TContext context, NonNullType nonNullType)
+    {
+    }
 
-        protected virtual void EnterObjectValue(TContext context, ObjectValue objectValue)
-        {
-        }
+    protected virtual void EnterNullValue(TContext context, NullValue nullValue)
+    {
+    }
 
-        protected virtual void EnterObjectField(TContext context, ObjectField objectField)
-        {
-        }
+    protected virtual void EnterObjectValue(TContext context, ObjectValue objectValue)
+    {
+    }
 
-        protected virtual void EnterOperationDefinition(TContext context, OperationDefinition operationDefinition)
-        {
-        }
+    protected virtual void EnterObjectField(TContext context, ObjectField objectField)
+    {
+    }
 
-        protected virtual void EnterSelectionSet(TContext context, SelectionSet selectionSet)
-        {
-        }
+    protected virtual void EnterOperationDefinition(TContext context, OperationDefinition operationDefinition)
+    {
+    }
 
-        protected virtual void EnterStringValue(TContext context, StringValue stringValue)
-        {
-        }
+    protected virtual void EnterSelectionSet(TContext context, SelectionSet selectionSet)
+    {
+    }
 
-        protected virtual void EnterDirectiveDefinition(TContext context, DirectiveDefinition directiveDefinition)
-        {
-        }
+    protected virtual void EnterStringValue(TContext context, StringValue stringValue)
+    {
+    }
 
-        protected virtual void EnterEnumDefinition(TContext context, EnumDefinition enumDefinition)
-        {
-        }
+    protected virtual void EnterDirectiveDefinition(TContext context, DirectiveDefinition directiveDefinition)
+    {
+    }
 
-        protected virtual void EnterEnumValueDefinition(TContext context, EnumValueDefinition enumValueDefinition)
-        {
-        }
+    protected virtual void EnterEnumDefinition(TContext context, EnumDefinition enumDefinition)
+    {
+    }
 
-        protected virtual void EnterFieldDefinition(TContext context, FieldDefinition fieldDefinition)
-        {
-        }
+    protected virtual void EnterEnumValueDefinition(TContext context, EnumValueDefinition enumValueDefinition)
+    {
+    }
 
-        protected virtual void EnterInputObjectDefinition(TContext context, InputObjectDefinition inputObjectDefinition)
-        {
-        }
+    protected virtual void EnterFieldDefinition(TContext context, FieldDefinition fieldDefinition)
+    {
+    }
 
-        protected virtual void EnterInputValueDefinition(TContext context, InputValueDefinition inputValueDefinition)
-        {
-        }
+    protected virtual void EnterInputObjectDefinition(TContext context, InputObjectDefinition inputObjectDefinition)
+    {
+    }
 
-        protected virtual void EnterInterfaceDefinition(TContext context, InterfaceDefinition interfaceDefinition)
-        {
-        }
+    protected virtual void EnterInputValueDefinition(TContext context, InputValueDefinition inputValueDefinition)
+    {
+    }
 
-        protected virtual void EnterObjectDefinition(TContext context, ObjectDefinition objectDefinition)
-        {
-        }
+    protected virtual void EnterInterfaceDefinition(TContext context, InterfaceDefinition interfaceDefinition)
+    {
+    }
 
-        protected virtual void EnterScalarDefinition(TContext context, ScalarDefinition scalarDefinition)
-        {
-        }
+    protected virtual void EnterObjectDefinition(TContext context, ObjectDefinition objectDefinition)
+    {
+    }
 
-        protected virtual void EnterSchemaDefinition(TContext context, SchemaDefinition schemaDefinition)
-        {
-        }
+    protected virtual void EnterScalarDefinition(TContext context, ScalarDefinition scalarDefinition)
+    {
+    }
 
-        protected virtual void EnterSchemaExtension(TContext context, SchemaExtension schemaExtension)
-        {
-        }
+    protected virtual void EnterSchemaDefinition(TContext context, SchemaDefinition schemaDefinition)
+    {
+    }
 
-        protected virtual void EnterUnionDefinition(TContext context, UnionDefinition unionDefinition)
-        {
-        }
+    protected virtual void EnterSchemaExtension(TContext context, SchemaExtension schemaExtension)
+    {
+    }
 
-        protected virtual void EnterTypeExtension(TContext context, TypeExtension typeExtension)
-        {
-        }
+    protected virtual void EnterUnionDefinition(TContext context, UnionDefinition unionDefinition)
+    {
+    }
 
-        protected virtual void EnterTypeSystemDocument(TContext context, TypeSystemDocument typeSystemDocument)
-        {
-        }
+    protected virtual void EnterTypeExtension(TContext context, TypeExtension typeExtension)
+    {
+    }
 
-        protected virtual void EnterVariable(TContext context, Variable variable)
-        {
-        }
+    protected virtual void EnterTypeSystemDocument(TContext context, TypeSystemDocument typeSystemDocument)
+    {
+    }
 
-        protected virtual void EnterVariableDefinition(TContext context, VariableDefinition variableDefinition)
+    protected virtual void EnterVariable(TContext context, Variable variable)
+    {
+    }
 
-        {
-        }
+    protected virtual void EnterVariableDefinition(TContext context, VariableDefinition variableDefinition)
 
-        public virtual void ExitNode(TContext context, INode node)
-        {
-            switch (node)
-            {
-                case null:
-                    break;
-                case Argument argument:
-                    ExitArgument(context, argument);
-                    break;
-                case BooleanValue booleanValue:
-                    ExitBooleanValue(context, booleanValue);
-                    break;
-                case DefaultValue defaultValue:
-                    ExitDefaultValue(context, defaultValue);
-                    break;
-                case Directive directive:
-                    ExitDirective(context, directive);
-                    break;
-                case Directives directives:
-                    ExitDirectives(context, directives);
-                    break;
-                case EnumValue enumValue:
-                    ExitEnumValue(context, enumValue);
-                    break;
-                case ExecutableDocument executableDocument:
-                    ExitExecutableDocument(context, executableDocument);
-                    break;
-                case FieldSelection fieldSelection:
-                    ExitFieldSelection(context, fieldSelection);
-                    break;
-                case FloatValue floatValue:
-                    ExitFloatValue(context, floatValue);
-                    break;
-                case FragmentDefinition fragmentDefinition:
-                    ExitFragmentDefinition(context, fragmentDefinition);
-                    break;
-                case FragmentDefinitions fragmentDefinitions:
-                    ExitFragmentDefinitions(context, fragmentDefinitions);
-                    break;
-                case FragmentSpread fragmentSpread:
-                    ExitFragmentSpread(context, fragmentSpread);
-                    break;
-                case InlineFragment inlineFragment:
-                    ExitInlineFragment(context, inlineFragment);
-                    break;
-                case IntValue intValue:
-                    ExitIntValue(context, intValue);
-                    break;
-                case ListType listType:
-                    ExitListType(context, listType);
-                    break;
-                case ListValue listValue:
-                    ExitListValue(context, listValue);
-                    break;
-                case NamedType namedType:
-                    ExitNamedType(context, namedType);
-                    break;
-                case NonNullType nonNullType:
-                    ExitNonNullType(context, nonNullType);
-                    break;
-                case NullValue nullValue:
-                    ExitNullValue(context, nullValue);
-                    break;
-                case ObjectField objectField:
-                    ExitObjectField(context, objectField);
-                    break;
-                case ObjectValue objectValue:
-                    ExitObjectValue(context, objectValue);
-                    break;
-                case OperationDefinition operationDefinition:
-                    ExitOperationDefinition(context, operationDefinition);
-                    break;
-                case OperationDefinitions operationDefinitions:
-                    ExitOperationDefinitions(context, operationDefinitions);
-                    break;
-                case SelectionSet selectionSet:
-                    ExitSelectionSet(context, selectionSet);
-                    break;
-                case StringValue stringValue:
-                    ExitStringValue(context, stringValue);
-                    break;
-                case ArgumentsDefinition argumentsDefinition:
-                    ExitArgumentsDefinition(context, argumentsDefinition);
-                    break;
-                case DirectiveDefinition directiveDefinition:
-                    ExitDirectiveDefinition(context, directiveDefinition);
-                    break;
-                case EnumDefinition enumDefinition:
-                    ExitEnumDefinition(context, enumDefinition);
-                    break;
-                case EnumValueDefinition enumValueDefinition:
-                    ExitEnumValueDefinition(context, enumValueDefinition);
-                    break;
-                case EnumValuesDefinition enumValuesDefinition:
-                    ExitEnumValuesDefinition(context, enumValuesDefinition);
-                    break;
-                case FieldDefinition fieldDefinition:
-                    ExitFieldDefinition(context, fieldDefinition);
-                    break;
-                case FieldsDefinition fieldsDefinition:
-                    ExitFieldsDefinition(context, fieldsDefinition);
-                    break;
-                case ImplementsInterfaces implementsInterfaces:
-                    ExitImplementsInterfaces(context, implementsInterfaces);
-                    break;
-                case Import import:
-                    ExitImport(context, import);
-                    break;
-                case InputObjectDefinition inputObjectDefinition:
-                    ExitInputObjectDefinition(context, inputObjectDefinition);
-                    break;
-                case InputValueDefinition inputValueDefinition:
-                    ExitInputValueDefinition(context, inputValueDefinition);
-                    break;
-                case InterfaceDefinition interfaceDefinition:
-                    ExitInterfaceDefinition(context, interfaceDefinition);
-                    break;
-                case ObjectDefinition objectDefinition:
-                    ExitObjectDefinition(context, objectDefinition);
-                    break;
-                case RootOperationTypeDefinition rootOperationTypeDefinition:
-                    ExitRootOperationTypeDefinition(context, rootOperationTypeDefinition);
-                    break;
-                case ScalarDefinition scalarDefinition:
-                    ExitScalarDefinition(context, scalarDefinition);
-                    break;
-                case SchemaDefinition schemaDefinition:
-                    ExitSchemaDefinition(context, schemaDefinition);
-                    break;
-                case SchemaExtension schemaExtension:
-                    ExitSchemaExtension(context, schemaExtension);
-                    break;
-                case UnionDefinition unionDefinition:
-                    ExitUnionDefinition(context, unionDefinition);
-                    break;
-                case UnionMemberTypes unionMemberTypes:
-                    ExitUnionMemberTypes(context, unionMemberTypes);
-                    break;
-                case TypeExtension typeExtension:
-                    ExitTypeExtension(context, typeExtension);
-                    break;
-                case TypeSystemDocument typeSystemDocument:
-                    ExitTypeSystemDocument(context, typeSystemDocument);
-                    break;
-                case Variable variable:
-                    ExitVariable(context, variable);
-                    break;
-                case VariableDefinition variableDefinition:
-                    ExitVariableDefinition(context, variableDefinition);
-                    break;
-                case VariableDefinitions variableDefinitions:
-                    ExitVariableDefinitions(context, variableDefinitions);
-                    break;
-                case InputFieldsDefinition inputFieldsDefinition:
-                    ExitInputFieldsDefinition(context, inputFieldsDefinition);
-                    break;
-                case Arguments arguments:
-                    ExitArguments(context, arguments);
-                    break;
-                case RootOperationTypeDefinitions rootOperationTypeDefinitions:
-                    ExitRootOperationTypeDefinitions(context, rootOperationTypeDefinitions);
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(node));
-            }
-
-            //todo: should include ability to exit base value
-            if (node is ValueBase value)
-                ExitValue(context, value);
-
-        }
+    {
+    }
 
-        protected virtual void ExitRootOperationTypeDefinitions(TContext context, RootOperationTypeDefinitions rootOperationTypeDefinitions)
-        {
-        }
+    protected virtual void ExitRootOperationTypeDefinitions(TContext context,
+        RootOperationTypeDefinitions rootOperationTypeDefinitions)
+    {
+    }
 
-        protected virtual void ExitInputFieldsDefinition(TContext fieldsDefinition,
-            InputFieldsDefinition inputFieldsDefinition)
-        {
-        }
+    protected virtual void ExitInputFieldsDefinition(TContext fieldsDefinition,
+        InputFieldsDefinition inputFieldsDefinition)
+    {
+    }
 
-        protected virtual void ExitValue(TContext context, ValueBase value)
-        {
-        }
+    protected virtual void ExitValue(TContext context, ValueBase value)
+    {
+    }
 
-        protected virtual void ExitDirectives(TContext context, Directives directives)
-        {
-        }
+    protected virtual void ExitDirectives(TContext context, Directives directives)
+    {
+    }
 
-        protected virtual void ExitFragmentDefinitions(TContext context, FragmentDefinitions fragmentDefinitions)
-        {
-        }
+    protected virtual void ExitFragmentDefinitions(TContext context, FragmentDefinitions fragmentDefinitions)
+    {
+    }
 
-        protected virtual void ExitOperationDefinitions(TContext context, OperationDefinitions operationDefinitions)
-        {
-        }
+    protected virtual void ExitOperationDefinitions(TContext context, OperationDefinitions operationDefinitions)
+    {
+    }
 
-        protected virtual void ExitArgumentsDefinition(TContext context, ArgumentsDefinition argumentsDefinition)
-        {
-        }
+    protected virtual void ExitArgumentsDefinition(TContext context, ArgumentsDefinition argumentsDefinition)
+    {
+    }
 
-        protected virtual void ExitEnumValuesDefinition(TContext context, EnumValuesDefinition enumValuesDefinition)
-        {
-        }
+    protected virtual void ExitEnumValuesDefinition(TContext context, EnumValuesDefinition enumValuesDefinition)
+    {
+    }
 
-        protected virtual void ExitFieldsDefinition(TContext context, FieldsDefinition fieldsDefinition)
-        {
-        }
+    protected virtual void ExitFieldsDefinition(TContext context, FieldsDefinition fieldsDefinition)
+    {
+    }
 
-        protected virtual void ExitImplementsInterfaces(TContext context, ImplementsInterfaces implementsInterfaces)
-        {
-        }
+    protected virtual void ExitImplementsInterfaces(TContext context, ImplementsInterfaces implementsInterfaces)
+    {
+    }
 
-        protected virtual void ExitRootOperationTypeDefinition(TContext context, RootOperationTypeDefinition rootOperationTypeDefinition)
-        {
-        }
+    protected virtual void ExitRootOperationTypeDefinition(TContext context,
+        RootOperationTypeDefinition rootOperationTypeDefinition)
+    {
+    }
 
-        protected virtual void ExitUnionMemberTypes(TContext context, UnionMemberTypes unionMemberTypes)
-        {
-        }
+    protected virtual void ExitUnionMemberTypes(TContext context, UnionMemberTypes unionMemberTypes)
+    {
+    }
 
-        protected virtual void ExitVariableDefinitions(TContext context, VariableDefinitions variableDefinitions)
-        {
-        }
+    protected virtual void ExitVariableDefinitions(TContext context, VariableDefinitions variableDefinitions)
+    {
+    }
 
-        protected virtual void ExitArguments(TContext context, Arguments arguments)
-        {
-        }
+    protected virtual void ExitArguments(TContext context, Arguments arguments)
+    {
+    }
 
-        protected virtual void ExitImport(TContext context, Import import)
-        {
-        }
+    protected virtual void ExitImport(TContext context, Import import)
+    {
+    }
 
-        protected virtual void ExitArgument(TContext context, Argument argument)
-        {
-        }
+    protected virtual void ExitArgument(TContext context, Argument argument)
+    {
+    }
 
-        protected virtual void ExitBooleanValue(TContext context, BooleanValue booleanValue)
-        {
-        }
+    protected virtual void ExitBooleanValue(TContext context, BooleanValue booleanValue)
+    {
+    }
 
-        protected virtual void ExitDefaultValue(TContext context, DefaultValue defaultValue)
-        {
-        }
+    protected virtual void ExitDefaultValue(TContext context, DefaultValue defaultValue)
+    {
+    }
 
-        protected virtual void ExitDirective(TContext context, Directive directive)
-        {
-        }
+    protected virtual void ExitDirective(TContext context, Directive directive)
+    {
+    }
 
-        protected virtual void ExitEnumValue(TContext context, EnumValue enumValue)
-        {
-        }
+    protected virtual void ExitEnumValue(TContext context, EnumValue enumValue)
+    {
+    }
 
-        protected virtual void ExitExecutableDocument(TContext context, ExecutableDocument executableDocument)
-        {
-        }
+    protected virtual void ExitExecutableDocument(TContext context, ExecutableDocument executableDocument)
+    {
+    }
 
-        protected virtual void ExitFieldSelection(TContext context, FieldSelection fieldSelection)
-        {
-        }
+    protected virtual void ExitFieldSelection(TContext context, FieldSelection fieldSelection)
+    {
+    }
 
-        protected virtual void ExitFloatValue(TContext context, FloatValue floatValue)
-        {
-        }
+    protected virtual void ExitFloatValue(TContext context, FloatValue floatValue)
+    {
+    }
 
-        protected virtual void ExitFragmentDefinition(TContext context, FragmentDefinition fragmentDefinition)
-        {
-        }
+    protected virtual void ExitFragmentDefinition(TContext context, FragmentDefinition fragmentDefinition)
+    {
+    }
 
-        protected virtual void ExitFragmentSpread(TContext context, FragmentSpread fragmentSpread)
-        {
-        }
+    protected virtual void ExitFragmentSpread(TContext context, FragmentSpread fragmentSpread)
+    {
+    }
 
-        protected virtual void ExitInlineFragment(TContext context, InlineFragment inlineFragment)
-        {
-        }
+    protected virtual void ExitInlineFragment(TContext context, InlineFragment inlineFragment)
+    {
+    }
 
-        protected virtual void ExitIntValue(TContext context, IntValue intValue)
-        {
-        }
+    protected virtual void ExitIntValue(TContext context, IntValue intValue)
+    {
+    }
 
-        protected virtual void ExitListType(TContext context, ListType listType)
-        {
-        }
+    protected virtual void ExitListType(TContext context, ListType listType)
+    {
+    }
 
-        protected virtual void ExitListValue(TContext context, ListValue listValue)
-        {
-        }
+    protected virtual void ExitListValue(TContext context, ListValue listValue)
+    {
+    }
 
-        protected virtual void ExitNamedType(TContext context, NamedType namedType)
-        {
-        }
+    protected virtual void ExitNamedType(TContext context, NamedType namedType)
+    {
+    }
 
-        protected virtual void ExitNonNullType(TContext context, NonNullType nonNullType)
-        {
-        }
+    protected virtual void ExitNonNullType(TContext context, NonNullType nonNullType)
+    {
+    }
 
-        protected virtual void ExitNullValue(TContext context, NullValue nullValue)
-        {
-        }
+    protected virtual void ExitNullValue(TContext context, NullValue nullValue)
+    {
+    }
 
-        protected virtual void ExitObjectValue(TContext context, ObjectValue objectValue)
-        {
-        }
+    protected virtual void ExitObjectValue(TContext context, ObjectValue objectValue)
+    {
+    }
 
-        protected virtual void ExitObjectField(TContext context, ObjectField objectField)
-        {
-        }
+    protected virtual void ExitObjectField(TContext context, ObjectField objectField)
+    {
+    }
 
-        protected virtual void ExitOperationDefinition(TContext context, OperationDefinition operationDefinition)
-        {
-        }
+    protected virtual void ExitOperationDefinition(TContext context, OperationDefinition operationDefinition)
+    {
+    }
 
-        protected virtual void ExitSelectionSet(TContext context, SelectionSet selectionSet)
-        {
-        }
+    protected virtual void ExitSelectionSet(TContext context, SelectionSet selectionSet)
+    {
+    }
 
-        protected virtual void ExitStringValue(TContext context, StringValue stringValue)
-        {
-        }
+    protected virtual void ExitStringValue(TContext context, StringValue stringValue)
+    {
+    }
 
-        protected virtual void ExitDirectiveDefinition(TContext context, DirectiveDefinition directiveDefinition)
-        {
-        }
+    protected virtual void ExitDirectiveDefinition(TContext context, DirectiveDefinition directiveDefinition)
+    {
+    }
 
-        protected virtual void ExitEnumDefinition(TContext context, EnumDefinition enumDefinition)
-        {
-        }
+    protected virtual void ExitEnumDefinition(TContext context, EnumDefinition enumDefinition)
+    {
+    }
 
-        protected virtual void ExitEnumValueDefinition(TContext context, EnumValueDefinition enumValueDefinition)
-        {
-        }
+    protected virtual void ExitEnumValueDefinition(TContext context, EnumValueDefinition enumValueDefinition)
+    {
+    }
 
-        protected virtual void ExitFieldDefinition(TContext context, FieldDefinition fieldDefinition)
-        {
-        }
+    protected virtual void ExitFieldDefinition(TContext context, FieldDefinition fieldDefinition)
+    {
+    }
 
-        protected virtual void ExitInputObjectDefinition(TContext context, InputObjectDefinition inputObjectDefinition)
-        {
-        }
+    protected virtual void ExitInputObjectDefinition(TContext context, InputObjectDefinition inputObjectDefinition)
+    {
+    }
 
-        protected virtual void ExitInputValueDefinition(TContext context, InputValueDefinition inputValueDefinition)
-        {
-        }
+    protected virtual void ExitInputValueDefinition(TContext context, InputValueDefinition inputValueDefinition)
+    {
+    }
 
-        protected virtual void ExitInterfaceDefinition(TContext context, InterfaceDefinition interfaceDefinition)
-        {
-        }
+    protected virtual void ExitInterfaceDefinition(TContext context, InterfaceDefinition interfaceDefinition)
+    {
+    }
 
-        protected virtual void ExitObjectDefinition(TContext context, ObjectDefinition objectDefinition)
-        {
-        }
+    protected virtual void ExitObjectDefinition(TContext context, ObjectDefinition objectDefinition)
+    {
+    }
 
-        protected virtual void ExitScalarDefinition(TContext context, ScalarDefinition scalarDefinition)
-        {
-        }
+    protected virtual void ExitScalarDefinition(TContext context, ScalarDefinition scalarDefinition)
+    {
+    }
 
-        protected virtual void ExitSchemaDefinition(TContext context, SchemaDefinition schemaDefinition)
-        {
-        }
+    protected virtual void ExitSchemaDefinition(TContext context, SchemaDefinition schemaDefinition)
+    {
+    }
 
-        protected virtual void ExitSchemaExtension(TContext context, SchemaExtension schemaExtension)
-        {
-        }
+    protected virtual void ExitSchemaExtension(TContext context, SchemaExtension schemaExtension)
+    {
+    }
 
-        protected virtual void ExitUnionDefinition(TContext context, UnionDefinition unionDefinition)
-        {
-        }
+    protected virtual void ExitUnionDefinition(TContext context, UnionDefinition unionDefinition)
+    {
+    }
 
-        protected virtual void ExitTypeExtension(TContext context, TypeExtension typeExtension)
-        {
-        }
+    protected virtual void ExitTypeExtension(TContext context, TypeExtension typeExtension)
+    {
+    }
 
-        protected virtual void ExitTypeSystemDocument(TContext context, TypeSystemDocument typeSystemDocument)
-        {
-        }
+    protected virtual void ExitTypeSystemDocument(TContext context, TypeSystemDocument typeSystemDocument)
+    {
+    }
 
-        protected virtual void ExitVariable(TContext context, Variable variable)
-        {
-        }
+    protected virtual void ExitVariable(TContext context, Variable variable)
+    {
+    }
 
-        protected virtual void ExitVariableDefinition(TContext context, VariableDefinition variableDefinition)
-        {
-        }
+    protected virtual void ExitVariableDefinition(TContext context, VariableDefinition variableDefinition)
+    {
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/ReadOnlyDocumentWalker.cs b/src/graphql.language/ReadOnlyDocumentWalker.cs
index a7d6df415..585a4a23f 100644
--- a/src/graphql.language/ReadOnlyDocumentWalker.cs
+++ b/src/graphql.language/ReadOnlyDocumentWalker.cs
@@ -1,610 +1,590 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public class ReadOnlyDocumentWalker<TContext>
+    where TContext : DocumentWalkerContextBase
 {
-    public class ReadOnlyDocumentWalker<TContext>
-        where TContext : DocumentWalkerContextBase
+    private readonly TContext _context;
+    private readonly IReadOnlyList<IReadOnlyDocumentVisitor<TContext>> _visitors;
+
+    public ReadOnlyDocumentWalker(IReadOnlyList<IReadOnlyDocumentVisitor<TContext>> visitors, TContext context)
     {
-        private readonly IReadOnlyList<IReadOnlyDocumentVisitor<TContext>> _visitors;
-        private readonly TContext _context;
+        _visitors = visitors;
+        _context = context;
+    }
 
-        public ReadOnlyDocumentWalker(IReadOnlyList<IReadOnlyDocumentVisitor<TContext>> visitors, TContext context)
-        {
-            _visitors = visitors;
-            _context = context;
+    public virtual void Visit(INode? node)
+    {
+        switch (node)
+        {
+            case null:
+                break;
+            case Argument argument:
+                VisitArgument(argument);
+                break;
+            case Arguments arguments:
+                VisitCollection(arguments);
+                break;
+            case BooleanValue booleanValue:
+                VisitBooleanValue(booleanValue);
+                break;
+            case DefaultValue defaultValue:
+                VisitDefaultValue(defaultValue);
+                break;
+            case Directive directive:
+                VisitDirective(directive);
+                break;
+            case Directives directives:
+                VisitCollection(directives);
+                break;
+            case EnumValue enumValue:
+                VisitEnumValue(enumValue);
+                break;
+            case ExecutableDocument executableDocument:
+                VisitExecutableDocument(executableDocument);
+                break;
+            case FieldSelection fieldSelection:
+                VisitFieldSelection(fieldSelection);
+                break;
+            case FloatValue floatValue:
+                VisitFloatValue(floatValue);
+                break;
+            case FragmentDefinition fragmentDefinition:
+                VisitFragmentDefinition(fragmentDefinition);
+                break;
+            case FragmentDefinitions fragmentDefinitions:
+                VisitCollection(fragmentDefinitions);
+                break;
+            case FragmentSpread fragmentSpread:
+                VisitFragmentSpread(fragmentSpread);
+                break;
+            case InlineFragment inlineFragment:
+                VisitInlineFragment(inlineFragment);
+                break;
+            case IntValue intValue:
+                VisitIntValue(intValue);
+                break;
+            case ListType listType:
+                VisitListType(listType);
+                break;
+            case ListValue listValue:
+                VisitListValue(listValue);
+                break;
+            case NamedType namedType:
+                VisitNamedType(namedType);
+                break;
+            case NonNullType nonNullType:
+                VisitNonNullType(nonNullType);
+                break;
+            case NullValue nullValue:
+                VisitNullValue(nullValue);
+                break;
+            case ObjectField objectField:
+                VisitObjectField(objectField);
+                break;
+            case ObjectValue objectValue:
+                VisitObjectValue(objectValue);
+                break;
+            case OperationDefinition operationDefinition:
+                VisitOperationDefinition(operationDefinition);
+                break;
+            case OperationDefinitions operationDefinitions:
+                VisitCollection(operationDefinitions);
+                break;
+            case SelectionSet selectionSet:
+                VisitSelectionSet(selectionSet);
+                break;
+            case StringValue stringValue:
+                VisitStringValue(stringValue);
+                break;
+            case ArgumentsDefinition argumentsDefinition:
+                VisitCollection(argumentsDefinition);
+                break;
+            case DirectiveDefinition directiveDefinition:
+                VisitDirectiveDefinition(directiveDefinition);
+                break;
+            case EnumDefinition enumDefinition:
+                VisitEnumDefinition(enumDefinition);
+                break;
+            case EnumValueDefinition enumValueDefinition:
+                VisitEnumValueDefinition(enumValueDefinition);
+                break;
+            case EnumValuesDefinition enumValuesDefinition:
+                VisitCollection(enumValuesDefinition);
+                break;
+            case FieldDefinition fieldDefinition:
+                VisitFieldDefinition(fieldDefinition);
+                break;
+            case FieldsDefinition fieldsDefinition:
+                VisitCollection(fieldsDefinition);
+                break;
+            case ImplementsInterfaces implementsInterfaces:
+                VisitCollection(implementsInterfaces);
+                break;
+            case Import import:
+                VisitImport(import);
+                break;
+            case InputObjectDefinition inputObjectDefinition:
+                VisitInputObjectDefinition(inputObjectDefinition);
+                break;
+            case InputValueDefinition inputValueDefinition:
+                VisitInputValueDefinition(inputValueDefinition);
+                break;
+            case InterfaceDefinition interfaceDefinition:
+                VisitInterfaceDefinition(interfaceDefinition);
+                break;
+            case ObjectDefinition objectDefinition:
+                VisitObjectDefinition(objectDefinition);
+                break;
+            case RootOperationTypeDefinition rootOperationTypeDefinition:
+                VisitRootOperationTypeDefinition(rootOperationTypeDefinition);
+                break;
+            case ScalarDefinition scalarDefinition:
+                VisitScalarDefinition(scalarDefinition);
+                break;
+            case SchemaDefinition schemaDefinition:
+                VisitSchemaDefinition(schemaDefinition);
+                break;
+            case SchemaExtension schemaExtension:
+                VisitSchemaExtension(schemaExtension);
+                break;
+            case UnionDefinition unionDefinition:
+                VisitUnionDefinition(unionDefinition);
+                break;
+            case UnionMemberTypes unionMemberTypes:
+                VisitCollection(unionMemberTypes);
+                break;
+            case TypeExtension typeExtension:
+                VisitTypeExtension(typeExtension);
+                break;
+            case TypeSystemDocument typeSystemDocument:
+                VisitTypeSystemDocument(typeSystemDocument);
+                break;
+            case Variable variable:
+                VisitVariable(variable);
+                break;
+            case VariableDefinition variableDefinition:
+                VisitVariableDefinition(variableDefinition);
+                break;
+            case VariableDefinitions variableDefinitions:
+                VisitCollection(variableDefinitions);
+                break;
+            case InputFieldsDefinition inputFieldsDefinition:
+                VisitCollection(inputFieldsDefinition);
+                break;
+            case RootOperationTypeDefinitions rootOperationTypeDefinitions:
+                VisitCollection(rootOperationTypeDefinitions);
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(node), node.GetType().Name, "Node not supported");
         }
+    }
 
-        public virtual void Visit(INode? node)
-        {
-            switch (node)
-            {
-                case null:
-                    break;
-                case Argument argument:
-                    VisitArgument(argument);
-                    break;
-                case Arguments arguments:
-                    VisitCollection(arguments);
-                    break;
-                case BooleanValue booleanValue:
-                    VisitBooleanValue(booleanValue);
-                    break;
-                case DefaultValue defaultValue:
-                    VisitDefaultValue(defaultValue);
-                    break;
-                case Directive directive:
-                    VisitDirective(directive);
-                    break;
-                case Directives directives:
-                    VisitCollection(directives);
-                    break;
-                case EnumValue enumValue:
-                    VisitEnumValue(enumValue);
-                    break;
-                case ExecutableDocument executableDocument:
-                    VisitExecutableDocument(executableDocument);
-                    break;
-                case FieldSelection fieldSelection:
-                    VisitFieldSelection(fieldSelection);
-                    break;
-                case FloatValue floatValue:
-                    VisitFloatValue(floatValue);
-                    break;
-                case FragmentDefinition fragmentDefinition:
-                    VisitFragmentDefinition(fragmentDefinition);
-                    break;
-                case FragmentDefinitions fragmentDefinitions:
-                    VisitCollection(fragmentDefinitions);
-                    break;
-                case FragmentSpread fragmentSpread:
-                    VisitFragmentSpread(fragmentSpread);
-                    break;
-                case InlineFragment inlineFragment:
-                    VisitInlineFragment(inlineFragment);
-                    break;
-                case IntValue intValue:
-                    VisitIntValue(intValue);
-                    break;
-                case ListType listType:
-                    VisitListType(listType);
-                    break;
-                case ListValue listValue:
-                    VisitListValue(listValue);
-                    break;
-                case NamedType namedType:
-                    VisitNamedType(namedType);
-                    break;
-                case NonNullType nonNullType:
-                    VisitNonNullType(nonNullType);
-                    break;
-                case NullValue nullValue:
-                    VisitNullValue(nullValue);
-                    break;
-                case ObjectField objectField:
-                    VisitObjectField(objectField);
-                    break;
-                case ObjectValue objectValue:
-                    VisitObjectValue(objectValue);
-                    break;
-                case OperationDefinition operationDefinition:
-                    VisitOperationDefinition(operationDefinition);
-                    break;
-                case OperationDefinitions operationDefinitions:
-                    VisitCollection(operationDefinitions);
-                    break;
-                case SelectionSet selectionSet:
-                    VisitSelectionSet(selectionSet);
-                    break;
-                case StringValue stringValue:
-                    VisitStringValue(stringValue);
-                    break;
-                case ArgumentsDefinition argumentsDefinition:
-                    VisitCollection(argumentsDefinition);
-                    break;
-                case DirectiveDefinition directiveDefinition:
-                    VisitDirectiveDefinition(directiveDefinition);
-                    break;
-                case EnumDefinition enumDefinition:
-                    VisitEnumDefinition(enumDefinition);
-                    break;
-                case EnumValueDefinition enumValueDefinition:
-                    VisitEnumValueDefinition(enumValueDefinition);
-                    break;
-                case EnumValuesDefinition enumValuesDefinition:
-                    VisitCollection(enumValuesDefinition);
-                    break;
-                case FieldDefinition fieldDefinition:
-                    VisitFieldDefinition(fieldDefinition);
-                    break;
-                case FieldsDefinition fieldsDefinition:
-                    VisitCollection(fieldsDefinition);
-                    break;
-                case ImplementsInterfaces implementsInterfaces:
-                    VisitCollection(implementsInterfaces);
-                    break;
-                case Import import:
-                    VisitImport(import);
-                    break;
-                case InputObjectDefinition inputObjectDefinition:
-                    VisitInputObjectDefinition(inputObjectDefinition);
-                    break;
-                case InputValueDefinition inputValueDefinition:
-                    VisitInputValueDefinition(inputValueDefinition);
-                    break;
-                case InterfaceDefinition interfaceDefinition:
-                    VisitInterfaceDefinition(interfaceDefinition);
-                    break;
-                case ObjectDefinition objectDefinition:
-                    VisitObjectDefinition(objectDefinition);
-                    break;
-                case RootOperationTypeDefinition rootOperationTypeDefinition:
-                    VisitRootOperationTypeDefinition(rootOperationTypeDefinition);
-                    break;
-                case ScalarDefinition scalarDefinition:
-                    VisitScalarDefinition(scalarDefinition);
-                    break;
-                case SchemaDefinition schemaDefinition:
-                    VisitSchemaDefinition(schemaDefinition);
-                    break;
-                case SchemaExtension schemaExtension:
-                    VisitSchemaExtension(schemaExtension);
-                    break;
-                case UnionDefinition unionDefinition:
-                    VisitUnionDefinition(unionDefinition);
-                    break;
-                case UnionMemberTypes unionMemberTypes:
-                    VisitCollection(unionMemberTypes);
-                    break;
-                case TypeExtension typeExtension:
-                    VisitTypeExtension(typeExtension);
-                    break;
-                case TypeSystemDocument typeSystemDocument:
-                    VisitTypeSystemDocument(typeSystemDocument);
-                    break;
-                case Variable variable:
-                    VisitVariable(variable);
-                    break;
-                case VariableDefinition variableDefinition:
-                    VisitVariableDefinition(variableDefinition);
-                    break;
-                case VariableDefinitions variableDefinitions:
-                    VisitCollection(variableDefinitions);
-                    break;
-                case InputFieldsDefinition inputFieldsDefinition:
-                    VisitCollection(inputFieldsDefinition);
-                    break;
-                case RootOperationTypeDefinitions rootOperationTypeDefinitions:
-                    VisitCollection(rootOperationTypeDefinitions);
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(node), node.GetType().Name, "Node not supported");
-            }
-        }
+    protected virtual void ExitNode(INode node)
+    {
+        foreach (var visitor in _visitors) visitor.ExitNode(_context, node);
 
-        private void VisitRootOperationTypeDefinition(RootOperationTypeDefinition node)
-        {
-            EnterNode(node);
-            Visit(node.NamedType);
-            ExitNode(node);
-        }
+        _context.Pop();
+    }
 
-        private void VisitImport(Import node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+    protected virtual void EnterNode(INode node)
+    {
+        _context.Push(node);
+        foreach (var visitor in _visitors) visitor.EnterNode(_context, node);
+    }
 
-        private void VisitArgument(Argument node)
-        {
-            EnterNode(node);
+    private void VisitRootOperationTypeDefinition(RootOperationTypeDefinition node)
+    {
+        EnterNode(node);
+        Visit(node.NamedType);
+        ExitNode(node);
+    }
 
-            Visit(node.Value);
+    private void VisitImport(Import node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitArgument(Argument node)
+    {
+        EnterNode(node);
 
-        private void VisitBooleanValue(BooleanValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        Visit(node.Value);
 
-        private void VisitDefaultValue(DefaultValue node)
-        {
-            EnterNode(node);
-            Visit(node.Value);
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitEnumValue(EnumValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+    private void VisitBooleanValue(BooleanValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-        private void VisitDirective(Directive node)
-        {
-            EnterNode(node);
-            
-            Visit(node.Arguments);
+    private void VisitDefaultValue(DefaultValue node)
+    {
+        EnterNode(node);
+        Visit(node.Value);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitEnumValue(EnumValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-        private void VisitExecutableDocument(ExecutableDocument node)
-        {
-            EnterNode(node);
+    private void VisitDirective(Directive node)
+    {
+        EnterNode(node);
 
-            Visit(node.FragmentDefinitions);
-            Visit(node.OperationDefinitions);
+        Visit(node.Arguments);
 
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitFieldSelection(FieldSelection node)
-        {
-            EnterNode(node);
+    private void VisitExecutableDocument(ExecutableDocument node)
+    {
+        EnterNode(node);
 
-            Visit(node.Arguments);
-            Visit(node.Directives);
+        Visit(node.FragmentDefinitions);
+        Visit(node.OperationDefinitions);
 
-            if (node.SelectionSet != null)
-                Visit(node.SelectionSet);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitFieldSelection(FieldSelection node)
+    {
+        EnterNode(node);
 
-        private void VisitFloatValue(FloatValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        Visit(node.Arguments);
+        Visit(node.Directives);
 
-        private void VisitFragmentDefinition(FragmentDefinition node)
-        {
-            EnterNode(node);
+        if (node.SelectionSet != null)
+            Visit(node.SelectionSet);
+
+        ExitNode(node);
+    }
+
+    private void VisitFloatValue(FloatValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
+
+    private void VisitFragmentDefinition(FragmentDefinition node)
+    {
+        EnterNode(node);
+
+        Visit(node.TypeCondition);
+        Visit(node.Directives);
+        Visit(node.SelectionSet);
+
+        ExitNode(node);
+    }
 
+    private void VisitFragmentSpread(FragmentSpread node)
+    {
+        EnterNode(node);
+
+        Visit(node.Directives);
+
+        ExitNode(node);
+    }
+
+    private void VisitInlineFragment(InlineFragment node)
+    {
+        EnterNode(node);
+
+        if (node.TypeCondition != null)
             Visit(node.TypeCondition);
-            Visit(node.Directives);
-            Visit(node.SelectionSet);
 
-            ExitNode(node);
-        }
+        Visit(node.Directives);
 
-        private void VisitFragmentSpread(FragmentSpread node)
-        {
-            EnterNode(node);
+        Visit(node.SelectionSet);
 
-            Visit(node.Directives);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitIntValue(IntValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-        private void VisitInlineFragment(InlineFragment node)
-        {
-            EnterNode(node);
+    private void VisitListType(ListType node)
+    {
+        EnterNode(node);
+        Visit(node.OfType);
+        ExitNode(node);
+    }
 
-            if (node.TypeCondition != null)
-                Visit(node.TypeCondition);
+    private void VisitListValue(ListValue node)
+    {
+        VisitCollection(node);
+    }
 
-            Visit(node.Directives);
+    private void VisitNamedType(NamedType node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.SelectionSet);
+    private void VisitNonNullType(NonNullType node)
+    {
+        EnterNode(node);
+        Visit(node.OfType);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitNullValue(NullValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-        private void VisitIntValue(IntValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+    private void VisitObjectField(ObjectField node)
+    {
+        EnterNode(node);
+        Visit(node.Value);
+        ExitNode(node);
+    }
 
-        private void VisitListType(ListType node)
-        {
-            EnterNode(node);
-            Visit(node.OfType);
-            ExitNode(node);
-        }
+    private void VisitObjectValue(ObjectValue node)
+    {
+        VisitCollection(node);
+    }
 
-        private void VisitListValue(ListValue node)
-        {
-            VisitCollection(node);
-        }
+    private void VisitOperationDefinition(OperationDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitNamedType(NamedType node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        Visit(node.VariableDefinitions);
 
-        private void VisitNonNullType(NonNullType node)
-        {
-            EnterNode(node);
-            Visit(node.OfType);
-            ExitNode(node);
-        }
+        Visit(node.Directives);
 
-        private void VisitNullValue(NullValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        Visit(node.SelectionSet);
 
-        private void VisitObjectField(ObjectField node)
-        {
-            EnterNode(node);
-            Visit(node.Value);
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitObjectValue(ObjectValue node)
-        {
-            VisitCollection(node);
-        }
+    private void VisitSelectionSet(SelectionSet node)
+    {
+        VisitCollection(node);
+    }
 
-        private void VisitOperationDefinition(OperationDefinition node)
-        {
-            EnterNode(node);
+    private void VisitStringValue(StringValue node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.VariableDefinitions);
+    private void VisitDirectiveDefinition(DirectiveDefinition node)
+    {
+        EnterNode(node);
 
-            Visit(node.Directives);
+        Visit(node.Arguments);
 
-            Visit(node.SelectionSet);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitEnumDefinition(EnumDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitSelectionSet(SelectionSet node)
-        {
-            VisitCollection(node);
-        }
+        Visit(node.Directives);
 
-        private void VisitStringValue(StringValue node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        Visit(node.Values);
 
-        private void VisitDirectiveDefinition(DirectiveDefinition node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Arguments);
+    private void VisitEnumValueDefinition(EnumValueDefinition node)
+    {
+        EnterNode(node);
 
-            ExitNode(node);
-        }
+        Visit(node.Value);
 
-        private void VisitEnumDefinition(EnumDefinition node)
-        {
-            EnterNode(node);
+        Visit(node.Directives);
 
-            Visit(node.Directives);
+        ExitNode(node);
+    }
 
-            Visit(node.Values);
+    private void VisitObjectDefinition(ObjectDefinition node)
+    {
+        EnterNode(node);
+        Visit(node.Interfaces);
+        Visit(node.Directives);
+        Visit(node.Fields);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitFieldDefinition(FieldDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitEnumValueDefinition(EnumValueDefinition node)
-        {
-            EnterNode(node);
+        Visit(node.Arguments);
 
-            Visit(node.Value);
+        Visit(node.Type);
 
-            Visit(node.Directives);
+        Visit(node.Directives);
 
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitObjectDefinition(ObjectDefinition node)
-        {
-            EnterNode(node);
-            Visit(node.Interfaces);
-            Visit(node.Directives);
-            Visit(node.Fields);
-            ExitNode(node);
-        }
+    private void VisitInputValueDefinition(InputValueDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitFieldDefinition(FieldDefinition node)
-        {
-            EnterNode(node);
+        Visit(node.Type);
 
-            Visit(node.Arguments);
+        if (node.DefaultValue != null)
+            Visit(node.DefaultValue);
 
-            Visit(node.Type);
+        Visit(node.Directives);
 
-            Visit(node.Directives);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitInterfaceDefinition(InterfaceDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitInputValueDefinition(InputValueDefinition node)
-        {
-            EnterNode(node);
+        Visit(node.Interfaces);
+        Visit(node.Directives);
+        Visit(node.Fields);
 
-            Visit(node.Type);
+        ExitNode(node);
+    }
 
-            if (node.DefaultValue != null)
-                Visit(node.DefaultValue);
+    private void VisitInputObjectDefinition(InputObjectDefinition node)
+    {
+        EnterNode(node);
 
-            Visit(node.Directives);
+        Visit(node.Directives);
 
-            ExitNode(node);
-        }
+        Visit(node.Fields);
 
-        private void VisitInterfaceDefinition(InterfaceDefinition node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Interfaces);
-            Visit(node.Directives);
-            Visit(node.Fields);
+    private void VisitScalarDefinition(ScalarDefinition node)
+    {
+        EnterNode(node);
 
-            ExitNode(node);
-        }
+        Visit(node.Directives);
 
-        private void VisitInputObjectDefinition(InputObjectDefinition node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Directives);
+    private void VisitSchemaDefinition(SchemaDefinition node)
+    {
+        EnterNode(node);
 
-            Visit(node.Fields);
+        Visit(node.Directives);
+        Visit(node.Operations);
 
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitScalarDefinition(ScalarDefinition node)
-        {
-            EnterNode(node);
+    private void VisitSchemaExtension(SchemaExtension node)
+    {
+        EnterNode(node);
 
-            Visit(node.Directives);
+        Visit(node.Directives);
+        Visit(node.Operations);
 
-            ExitNode(node);
-        }
+        ExitNode(node);
+    }
 
-        private void VisitSchemaDefinition(SchemaDefinition node)
-        {
-            EnterNode(node);
+    private void VisitUnionDefinition(UnionDefinition node)
+    {
+        EnterNode(node);
 
-            Visit(node.Directives);
-            Visit(node.Operations);
-            
-            ExitNode(node);
-        }
+        Visit(node.Directives);
+        Visit(node.Members);
 
-        private void VisitSchemaExtension(SchemaExtension node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Directives);
-            Visit(node.Operations);
+    private void VisitTypeExtension(TypeExtension node)
+    {
+        EnterNode(node);
 
-            ExitNode(node);
-        }
+        Visit(node.Definition);
 
-        private void VisitUnionDefinition(UnionDefinition node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Directives);
-            Visit(node.Members);
+    private void VisitTypeSystemDocument(TypeSystemDocument node)
+    {
+        EnterNode(node);
 
-            ExitNode(node);
-        }
+        if (node.Imports != null)
+            foreach (var import in node.Imports)
+                Visit(import);
 
-        private void VisitTypeExtension(TypeExtension node)
-        {
-            EnterNode(node);
+        if (node.DirectiveDefinitions != null)
+            foreach (var definition in node.DirectiveDefinitions)
+                Visit(definition);
 
-            Visit(node.Definition);
+        if (node.TypeDefinitions != null)
+            foreach (var definition in node.TypeDefinitions)
+                Visit(definition);
 
-            ExitNode(node);
-        }
+        if (node.SchemaDefinitions != null)
+            foreach (var definition in node.SchemaDefinitions)
+                Visit(definition);
 
-        private void VisitTypeSystemDocument(TypeSystemDocument node)
-        {
-            EnterNode(node);
-
-            if (node.Imports != null)
-                foreach (var import in node.Imports)
-                {
-                    Visit(import);
-                }
-
-            if (node.DirectiveDefinitions != null)
-                foreach (var definition in node.DirectiveDefinitions)
-                {
-                    Visit(definition);
-                }
-
-            if (node.TypeDefinitions != null)
-                foreach (var definition in node.TypeDefinitions)
-                {
-                    Visit(definition);
-                }
-
-            if (node.SchemaDefinitions != null)
-                foreach (var definition in node.SchemaDefinitions)
-                {
-                    Visit(definition);
-                }
-            
-            if (node.TypeExtensions != null)
-                foreach (var extension in node.TypeExtensions)
-                {
-                    Visit(extension);
-                }
-
-            if (node.SchemaExtensions != null)
-                foreach (var extension in node.SchemaExtensions)
-                {
-                    Visit(extension);
-                }
-
-            ExitNode(node);
-        }
+        if (node.TypeExtensions != null)
+            foreach (var extension in node.TypeExtensions)
+                Visit(extension);
 
-        private void VisitVariable(Variable node)
-        {
-            EnterNode(node);
-            ExitNode(node);
-        }
+        if (node.SchemaExtensions != null)
+            foreach (var extension in node.SchemaExtensions)
+                Visit(extension);
 
-        private void VisitVariableDefinition(VariableDefinition node)
-        {
-            EnterNode(node);
+        ExitNode(node);
+    }
 
-            Visit(node.Variable);
-            Visit(node.Type);
-            Visit(node.DefaultValue);
-            Visit(node.Directives);
+    private void VisitVariable(Variable node)
+    {
+        EnterNode(node);
+        ExitNode(node);
+    }
 
-            ExitNode(node);
-        }
+    private void VisitVariableDefinition(VariableDefinition node)
+    {
+        EnterNode(node);
 
-        private void VisitCollection(ICollectionNode<INode>? nodes)
-        {
-            if (nodes == null)
-                return;
-
-            var arrayState = _context.PushArrayState(nodes);
-            EnterNode(nodes);
-
-            for(int i = 0; i < nodes.Count; i++)
-            {
-                var node = nodes[i];
-                arrayState.Index = i;
-                Visit(node);
-            }
-            
-            ExitNode(nodes);
-            _context.PopArrayState();
-        }
+        Visit(node.Variable);
+        Visit(node.Type);
+        Visit(node.DefaultValue);
+        Visit(node.Directives);
 
-        protected virtual void ExitNode(INode node)
-        {
-            foreach (var visitor in _visitors)
-            {
-                visitor.ExitNode(_context, node);
-            }
+        ExitNode(node);
+    }
 
-            _context.Pop();
-        }
+    private void VisitCollection(ICollectionNode<INode>? nodes)
+    {
+        if (nodes == null)
+            return;
+
+        var arrayState = _context.PushArrayState(nodes);
+        EnterNode(nodes);
 
-        protected virtual void EnterNode(INode node)
+        for (var i = 0; i < nodes.Count; i++)
         {
-            _context.Push(node);
-            foreach (var visitor in _visitors)
-            {
-                visitor.EnterNode(_context, node);
-            }
+            var node = nodes[i];
+            arrayState.Index = i;
+            Visit(node);
         }
+
+        ExitNode(nodes);
+        _context.PopArrayState();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/TokenKind.cs b/src/graphql.language/TokenKind.cs
index 08e757181..739aac542 100644
--- a/src/graphql.language/TokenKind.cs
+++ b/src/graphql.language/TokenKind.cs
@@ -1,30 +1,29 @@
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public enum TokenKind
 {
-    public enum TokenKind
-    {
-        Start,
-        End,
-        ExclamationMark,
-        Dollar,
-        Ampersand,
-        LeftParenthesis,
-        RightParenthesis,
-        Colon,
-        Equal,
-        At,
-        LeftBracket,
-        RightBracket,
-        LeftBrace,
-        Pipe,
-        RightBrace,
-        Spread,
-        Name,
-        IntValue,
-        FloatValue,
-        StringValue,
-        BlockStringValue,
+    Start,
+    End,
+    ExclamationMark,
+    Dollar,
+    Ampersand,
+    LeftParenthesis,
+    RightParenthesis,
+    Colon,
+    Equal,
+    At,
+    LeftBracket,
+    RightBracket,
+    LeftBrace,
+    Pipe,
+    RightBrace,
+    Spread,
+    Name,
+    IntValue,
+    FloatValue,
+    StringValue,
+    BlockStringValue,
 #if GQL_COMMENTS
         Comment
 #endif
-    }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Validation/OperationNameUniquenessRule.cs b/src/graphql.language/Validation/OperationNameUniquenessRule.cs
index 5a72023c2..a3feb5f06 100644
--- a/src/graphql.language/Validation/OperationNameUniquenessRule.cs
+++ b/src/graphql.language/Validation/OperationNameUniquenessRule.cs
@@ -3,41 +3,40 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Visitors;
 
-namespace Tanka.GraphQL.Language.Validation
+namespace Tanka.GraphQL.Language.Validation;
+
+public class OperationNameUniquenessRule :
+    IVisit<OperationDefinition>,
+    IVisit<ExecutableDocument>
 {
-    public class OperationNameUniquenessRule :
-        IVisit<OperationDefinition>,
-        IVisit<ExecutableDocument>
-    {
-        private readonly Stack<Name> _known = new Stack<Name>(2);
+    private readonly Stack<Name> _known = new(2);
 
-        public void Enter(ExecutableDocument node)
-        {
-        }
+    public void Enter(ExecutableDocument node)
+    {
+    }
 
-        public void Leave(ExecutableDocument node)
-        {
-            while (_known.TryPop(out var name))
-                if (_known.Contains(name))
-                    throw new InvalidOperationException();
-            /*context.Error(ValidationErrorCodes.R5211OperationNameUniqueness,
-                    "Each named operation definition must be unique within a " +
-                    "document when referred to by its name. " +
-                    $"Operation: '{operationName}'",
-                    definition);*/
-        }
+    public void Leave(ExecutableDocument node)
+    {
+        while (_known.TryPop(out var name))
+            if (_known.Contains(name))
+                throw new InvalidOperationException();
+        /*context.Error(ValidationErrorCodes.R5211OperationNameUniqueness,
+                "Each named operation definition must be unique within a " +
+                "document when referred to by its name. " +
+                $"Operation: '{operationName}'",
+                definition);*/
+    }
 
-        public void Enter(OperationDefinition definition)
-        {
-            if (definition.Name == null)
-                return;
+    public void Enter(OperationDefinition definition)
+    {
+        if (definition.Name == null)
+            return;
 
-            var operationName = definition.Name.Value;
-            _known.Push(operationName);
-        }
+        var operationName = definition.Name.Value;
+        _known.Push(operationName);
+    }
 
-        public void Leave(OperationDefinition node)
-        {
-        }
+    public void Leave(OperationDefinition node)
+    {
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Visitors/ExecutionDocumentWalkerOptions.cs b/src/graphql.language/Visitors/ExecutionDocumentWalkerOptions.cs
index e32c2ace8..be7bd2cf2 100644
--- a/src/graphql.language/Visitors/ExecutionDocumentWalkerOptions.cs
+++ b/src/graphql.language/Visitors/ExecutionDocumentWalkerOptions.cs
@@ -1,105 +1,88 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Visitors
+namespace Tanka.GraphQL.Language.Visitors;
+
+public sealed class ExecutionDocumentWalkerOptions
 {
-    public sealed class ExecutionDocumentWalkerOptions
-    {
-        public List<IVisit<ExecutableDocument>> ExecutableDocument { get; set; }
-            = new List<IVisit<ExecutableDocument>>();
+    public List<IVisit<Argument>> Argument { get; set; } = new();
 
-        public List<IVisit<FragmentDefinition>> FragmentDefinition { get; set; }
-            = new List<IVisit<FragmentDefinition>>();
+    public List<IVisit<DefaultValue>> DefaultValue { get; set; } = new();
 
-        public List<IVisit<OperationDefinition>> OperationDefinition { get; set; }
-            = new List<IVisit<OperationDefinition>>();
+    public List<IVisit<Directive>> Directive { get; set; } = new();
 
-        public List<IVisit<SelectionSet>> SelectionSet { get; set; }
-            = new List<IVisit<SelectionSet>>();
+    public List<IVisit<ExecutableDocument>> ExecutableDocument { get; set; } = new();
 
-        public List<IVisit<ISelection>> Selection { get; set; }
-            = new List<IVisit<ISelection>>();
+    public List<IVisit<FieldSelection>> FieldSelection { get; set; } = new();
 
-        public List< IVisit<FieldSelection>> FieldSelection { get; set; }
-            = new List<IVisit<FieldSelection>>();
+    public List<IVisit<FragmentDefinition>> FragmentDefinition { get; set; } = new();
 
-        public List<IVisit<InlineFragment>> InlineFragment { get; set; }
-            = new List<IVisit<InlineFragment>>();
+    public List<IVisit<FragmentSpread>> FragmentSpread { get; set; } = new();
 
-        public List<IVisit<FragmentSpread>> FragmentSpread { get; set; }
-            = new List<IVisit<FragmentSpread>>();
+    public List<IVisit<InlineFragment>> InlineFragment { get; set; } = new();
 
-        public List<IVisit<Argument>> Argument { get; set; }
-            = new List<IVisit<Argument>>();
+    public List<IVisit<NamedType>> NamedType { get; set; } = new();
 
-        public List<IVisit<NamedType>> NamedType { get; set; }
-            = new List<IVisit<NamedType>>();
+    public List<IVisit<OperationDefinition>> OperationDefinition { get; set; } = new();
 
-        public List<IVisit<VariableDefinition>> VariableDefinition { get; set; }
-            = new List<IVisit<VariableDefinition>>();
+    public List<IVisit<ISelection>> Selection { get; set; } = new();
 
-        public List<IVisit<DefaultValue>> DefaultValue { get; set; }
-            = new List<IVisit<DefaultValue>>();
+    public List<IVisit<SelectionSet>> SelectionSet { get; set; } = new();
 
-        public List<IVisit<ValueBase>> Value { get; set; }
-            = new List<IVisit<ValueBase>>();
+    public List<IVisit<TypeBase>> Type { get; set; } = new();
 
-        public List<IVisit<Directive>> Directive { get; set; }
-            = new List<IVisit<Directive>>();
+    public List<IVisit<ValueBase>> Value { get; set; } = new();
 
-        public List<IVisit<TypeBase>> Type { get; set; }
-            = new List<IVisit<TypeBase>>();
+    public List<IVisit<VariableDefinition>> VariableDefinition { get; set; } = new();
+
+    public ExecutionDocumentWalkerOptions Add(object visitor)
+    {
+        if (visitor is IVisit<ExecutableDocument> ed)
+            ExecutableDocument.Add(ed);
 
-        public ExecutionDocumentWalkerOptions Add(object visitor)
-        {
-            if (visitor is IVisit<ExecutableDocument> ed)
-                ExecutableDocument.Add(ed);
+        if (visitor is IVisit<FragmentDefinition> fd)
+            FragmentDefinition.Add(fd);
 
-            if (visitor is IVisit<FragmentDefinition> fd)
-                FragmentDefinition.Add(fd);
+        if (visitor is IVisit<OperationDefinition> od)
+            OperationDefinition.Add(od);
 
-            if (visitor is IVisit<OperationDefinition> od)
-                OperationDefinition.Add(od);
+        if (visitor is IVisit<SelectionSet> ss)
+            SelectionSet.Add(ss);
 
-            if (visitor is IVisit<SelectionSet> ss)
-                SelectionSet.Add(ss);
 
-            
-            if (visitor is IVisit<ISelection> s)
-                Selection.Add(s);
+        if (visitor is IVisit<ISelection> s)
+            Selection.Add(s);
 
-            if (visitor is IVisit<FieldSelection> fs)
-                FieldSelection.Add(fs);
+        if (visitor is IVisit<FieldSelection> fs)
+            FieldSelection.Add(fs);
 
-            if (visitor is IVisit<InlineFragment> ift)
-                InlineFragment.Add(ift);
+        if (visitor is IVisit<InlineFragment> ift)
+            InlineFragment.Add(ift);
 
-            if (visitor is IVisit<FragmentSpread> fgs)
-                FragmentSpread.Add(fgs);
+        if (visitor is IVisit<FragmentSpread> fgs)
+            FragmentSpread.Add(fgs);
 
-            if (visitor is IVisit<Argument> arg)
-                Argument.Add(arg);
+        if (visitor is IVisit<Argument> arg)
+            Argument.Add(arg);
 
-            if (visitor is IVisit<NamedType> nt)
-                NamedType.Add(nt);
+        if (visitor is IVisit<NamedType> nt)
+            NamedType.Add(nt);
 
-            if (visitor is IVisit<VariableDefinition> vd)
-                VariableDefinition.Add(vd);
+        if (visitor is IVisit<VariableDefinition> vd)
+            VariableDefinition.Add(vd);
 
-            if (visitor is IVisit<DefaultValue> dv)
-                DefaultValue.Add(dv);
+        if (visitor is IVisit<DefaultValue> dv)
+            DefaultValue.Add(dv);
 
-            if (visitor is IVisit<ValueBase> v)
-                Value.Add(v);
+        if (visitor is IVisit<ValueBase> v)
+            Value.Add(v);
 
-            if (visitor is IVisit<Directive> d)
-                Directive.Add(d);
+        if (visitor is IVisit<Directive> d)
+            Directive.Add(d);
 
-            if (visitor is IVisit<TypeBase> t)
-                Type.Add(t);
+        if (visitor is IVisit<TypeBase> t)
+            Type.Add(t);
 
-            return this;
-        }
+        return this;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Visitors/IVisit.cs b/src/graphql.language/Visitors/IVisit.cs
index 97aaed7f5..708504d02 100644
--- a/src/graphql.language/Visitors/IVisit.cs
+++ b/src/graphql.language/Visitors/IVisit.cs
@@ -1,8 +1,7 @@
-namespace Tanka.GraphQL.Language.Visitors
+namespace Tanka.GraphQL.Language.Visitors;
+
+public interface IVisit<in T>
 {
-    public interface IVisit<in T>
-    {
-        void Enter(T node);
-        void Leave(T node);
-    }
+    void Enter(T node);
+    void Leave(T node);
 }
\ No newline at end of file
diff --git a/src/graphql.language/Visitors/ReadOnlyExecutionDocumentWalker.cs b/src/graphql.language/Visitors/ReadOnlyExecutionDocumentWalker.cs
index 87a2ff88c..f7acc3632 100644
--- a/src/graphql.language/Visitors/ReadOnlyExecutionDocumentWalker.cs
+++ b/src/graphql.language/Visitors/ReadOnlyExecutionDocumentWalker.cs
@@ -1,282 +1,280 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Language.Nodes;
+using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Visitors
+namespace Tanka.GraphQL.Language.Visitors;
+
+public sealed class ReadOnlyExecutionDocumentWalker
 {
-    public sealed class ReadOnlyExecutionDocumentWalker
+    private readonly ExecutionDocumentWalkerOptions _options;
+
+    public ReadOnlyExecutionDocumentWalker(ExecutionDocumentWalkerOptions options)
     {
-        private readonly ExecutionDocumentWalkerOptions _options;
+        _options = options;
+    }
 
-        public ReadOnlyExecutionDocumentWalker(ExecutionDocumentWalkerOptions options)
-        {
-            _options = options;
-        }
+    public void Visit(ExecutableDocument document)
+    {
+        // enter
+        foreach (var visitor in _options.ExecutableDocument)
+            visitor.Enter(document);
 
-        public void Visit(ExecutableDocument document)
-        {
-            // enter
-            foreach (var visitor in _options.ExecutableDocument)
-                visitor.Enter(document);
+        // children
+        if (document.FragmentDefinitions != null)
+            foreach (var definition in document.FragmentDefinitions)
+                Visit(definition);
 
-            // children
-            if (document.FragmentDefinitions != null)
-                foreach (var definition in document.FragmentDefinitions)
-                    Visit(definition);
+        if (document.OperationDefinitions != null)
+            foreach (var definition in document.OperationDefinitions)
+                Visit(definition);
 
-            if (document.OperationDefinitions != null)
-                foreach (var definition in document.OperationDefinitions)
-                    Visit(definition);
+        // leave
+        foreach (var visitor in _options.ExecutableDocument) visitor.Leave(document);
+    }
 
-            // leave
-            foreach (var visitor in _options.ExecutableDocument) visitor.Leave(document);
-        }
+    public void Visit(FragmentDefinition definition)
+    {
+        // enter
+        foreach (var visitor in _options.FragmentDefinition)
+            visitor.Enter(definition);
 
-        public void Visit(FragmentDefinition definition)
-        {
-            // enter
-            foreach (var visitor in _options.FragmentDefinition)
-                visitor.Enter(definition);
+        // children
+        Visit(definition.Directives);
+        Visit(definition.SelectionSet);
 
-            // children
-            Visit(definition.Directives);
-            Visit(definition.SelectionSet);
+        // leave
+        foreach (var visitor in _options.FragmentDefinition)
+            visitor.Leave(definition);
+    }
 
-            // leave
-            foreach (var visitor in _options.FragmentDefinition)
-                visitor.Leave(definition);
-        }
+    public void Visit(SelectionSet? selectionSet)
+    {
+        if (selectionSet == null)
+            return;
 
-        public void Visit(SelectionSet? selectionSet)
-        {
-            if (selectionSet == null)
-                return;
+        // enter
+        foreach (var visitor in _options.SelectionSet)
+            visitor.Enter(selectionSet);
 
-            // enter
-            foreach (var visitor in _options.SelectionSet)
-                visitor.Enter(selectionSet);
+        foreach (var selection in selectionSet.Selections) Visit(selection);
 
-            foreach (var selection in selectionSet.Selections) Visit(selection);
+        // leave
+        foreach (var visitor in _options.SelectionSet)
+            visitor.Leave(selectionSet);
+    }
 
-            // leave
-            foreach (var visitor in _options.SelectionSet)
-                visitor.Leave(selectionSet);
-        }
+    public void Visit(ISelection selection)
+    {
+        // enter
+        foreach (var visitor in _options.Selection)
+            visitor.Enter(selection);
 
-        public void Visit(ISelection selection)
+        // children
+        switch (selection.SelectionType)
         {
-            // enter
-            foreach (var visitor in _options.Selection)
-                visitor.Enter(selection);
-
-            // children
-            switch (selection.SelectionType)
-            {
-                case SelectionType.Field:
-                    Visit((FieldSelection) selection);
-                    break;
-                case SelectionType.InlineFragment:
-                    Visit((InlineFragment) selection);
-                    break;
-                case SelectionType.FragmentSpread:
-                    Visit((FragmentSpread) selection);
-                    break;
-            }
-
-            // leave
-            foreach (var visitor in _options.Selection)
-                visitor.Leave(selection);
+            case SelectionType.Field:
+                Visit((FieldSelection)selection);
+                break;
+            case SelectionType.InlineFragment:
+                Visit((InlineFragment)selection);
+                break;
+            case SelectionType.FragmentSpread:
+                Visit((FragmentSpread)selection);
+                break;
         }
 
-        public void Visit(FieldSelection selection)
-        {
-            // enter
-            foreach (var visitor in _options.FieldSelection)
-                visitor.Enter(selection);
-
-            // children
-            Visit(selection.Arguments);
-            Visit(selection.Directives);
-            Visit(selection.SelectionSet);
-
-            // leave
-            foreach (var visitor in _options.FieldSelection)
-                visitor.Leave(selection);
-        }
+        // leave
+        foreach (var visitor in _options.Selection)
+            visitor.Leave(selection);
+    }
 
-        public void Visit(InlineFragment selection)
-        {
-            // enter
-            foreach (var visitor in _options.InlineFragment)
-                visitor.Enter(selection);
-
-            // children
-            Visit(selection.TypeCondition);
-            Visit(selection.Directives);
-            Visit(selection.SelectionSet);
-
-            // leave
-            foreach (var visitor in _options.InlineFragment)
-                visitor.Leave(selection);
-        }
+    public void Visit(FieldSelection selection)
+    {
+        // enter
+        foreach (var visitor in _options.FieldSelection)
+            visitor.Enter(selection);
+
+        // children
+        Visit(selection.Arguments);
+        Visit(selection.Directives);
+        Visit(selection.SelectionSet);
+
+        // leave
+        foreach (var visitor in _options.FieldSelection)
+            visitor.Leave(selection);
+    }
 
-        public void Visit(in NamedType? namedType)
-        {
-            if (namedType == null)
-                return;
+    public void Visit(InlineFragment selection)
+    {
+        // enter
+        foreach (var visitor in _options.InlineFragment)
+            visitor.Enter(selection);
+
+        // children
+        Visit(selection.TypeCondition);
+        Visit(selection.Directives);
+        Visit(selection.SelectionSet);
+
+        // leave
+        foreach (var visitor in _options.InlineFragment)
+            visitor.Leave(selection);
+    }
 
-            // enter
-            foreach (var visitor in _options.NamedType)
-                visitor.Enter(namedType);
+    public void Visit(in NamedType? namedType)
+    {
+        if (namedType == null)
+            return;
 
-            // children
+        // enter
+        foreach (var visitor in _options.NamedType)
+            visitor.Enter(namedType);
 
-            // leave
-            foreach (var visitor in _options.NamedType)
-                visitor.Leave(namedType);
-        }
+        // children
 
-        public void Visit(FragmentSpread selection)
-        {
-            // enter
-            foreach (var visitor in _options.FragmentSpread)
-                visitor.Enter(selection);
+        // leave
+        foreach (var visitor in _options.NamedType)
+            visitor.Leave(namedType);
+    }
 
-            // children
-            Visit(selection.Directives);
+    public void Visit(FragmentSpread selection)
+    {
+        // enter
+        foreach (var visitor in _options.FragmentSpread)
+            visitor.Enter(selection);
 
-            // leave
-            foreach (var visitor in _options.FragmentSpread)
-                visitor.Leave(selection);
-        }
+        // children
+        Visit(selection.Directives);
 
-        public void Visit(Directive directive)
-        {
-            // enter
-            foreach (var visitor in _options.Directive)
-                visitor.Enter(directive);
+        // leave
+        foreach (var visitor in _options.FragmentSpread)
+            visitor.Leave(selection);
+    }
 
-            // children
-            Visit(directive.Arguments);
+    public void Visit(Directive directive)
+    {
+        // enter
+        foreach (var visitor in _options.Directive)
+            visitor.Enter(directive);
 
-            // leave
-            foreach (var visitor in _options.Directive)
-                visitor.Leave(directive);
-        }
+        // children
+        Visit(directive.Arguments);
 
-        public void Visit(OperationDefinition definition)
-        {
-            // enter
-            foreach (var visitor in _options.OperationDefinition)
-                visitor.Enter(definition);
-
-            // children
-            Visit(definition.VariableDefinitions);
-            Visit(definition.Directives);
-            Visit(definition.SelectionSet);
-
-            // leave
-            foreach (var visitor in _options.OperationDefinition)
-                visitor.Leave(definition);
-        }
+        // leave
+        foreach (var visitor in _options.Directive)
+            visitor.Leave(directive);
+    }
 
-        public void Visit(VariableDefinition definition)
-        {
-            // enter
-            foreach (var visitor in _options.VariableDefinition)
-                visitor.Enter(definition);
-
-            // children
-            Visit(definition.Directives);
-            Visit(definition.Variable);
-            Visit(definition.Type);
-            Visit(definition.DefaultValue);
-
-            // leave
-            foreach (var visitor in _options.VariableDefinition)
-                visitor.Leave(definition);
-        }
+    public void Visit(OperationDefinition definition)
+    {
+        // enter
+        foreach (var visitor in _options.OperationDefinition)
+            visitor.Enter(definition);
+
+        // children
+        Visit(definition.VariableDefinitions);
+        Visit(definition.Directives);
+        Visit(definition.SelectionSet);
+
+        // leave
+        foreach (var visitor in _options.OperationDefinition)
+            visitor.Leave(definition);
+    }
 
-        private void Visit(Arguments? arguments)
-        {
-            if (arguments == null)
-                return;
+    public void Visit(VariableDefinition definition)
+    {
+        // enter
+        foreach (var visitor in _options.VariableDefinition)
+            visitor.Enter(definition);
+
+        // children
+        Visit(definition.Directives);
+        Visit(definition.Variable);
+        Visit(definition.Type);
+        Visit(definition.DefaultValue);
+
+        // leave
+        foreach (var visitor in _options.VariableDefinition)
+            visitor.Leave(definition);
+    }
 
-            foreach (var argument in arguments) Visit(argument);
-        }
+    private void Visit(Arguments? arguments)
+    {
+        if (arguments == null)
+            return;
 
-        private void Visit(Argument argument)
-        {
-            // enter
-            foreach (var visitor in _options.Argument)
-                visitor.Enter(argument);
+        foreach (var argument in arguments) Visit(argument);
+    }
 
-            // children
-            Visit(argument.Value);
+    private void Visit(Argument argument)
+    {
+        // enter
+        foreach (var visitor in _options.Argument)
+            visitor.Enter(argument);
 
-            // leave
-            foreach (var visitor in _options.Argument)
-                visitor.Leave(argument);
-        }
+        // children
+        Visit(argument.Value);
 
-        private void Visit(ValueBase value)
-        {
-            // enter
-            foreach (var visitor in _options.Value)
-                visitor.Enter(value);
+        // leave
+        foreach (var visitor in _options.Argument)
+            visitor.Leave(argument);
+    }
 
-            // children
+    private void Visit(ValueBase value)
+    {
+        // enter
+        foreach (var visitor in _options.Value)
+            visitor.Enter(value);
 
-            // leave
-            foreach (var visitor in _options.Value)
-                visitor.Leave(value);
-        }
+        // children
 
-        private void Visit(Directives? directives)
-        {
-            if (directives == null)
-                return;
+        // leave
+        foreach (var visitor in _options.Value)
+            visitor.Leave(value);
+    }
 
-            foreach (var definition in directives) Visit(definition);
-        }
+    private void Visit(Directives? directives)
+    {
+        if (directives == null)
+            return;
 
-        private void Visit(VariableDefinitions? definitions)
-        {
-            if (definitions == null)
-                return;
+        foreach (var definition in directives) Visit(definition);
+    }
 
-            foreach (var definition in definitions)
-                Visit(definition);
-        }
+    private void Visit(VariableDefinitions? definitions)
+    {
+        if (definitions == null)
+            return;
 
-        private void Visit(DefaultValue? defaultValue)
-        {
-            if (defaultValue == null)
-                return;
+        foreach (var definition in definitions)
+            Visit(definition);
+    }
 
-            // enter
-            foreach (var visitor in _options.DefaultValue)
-                visitor.Enter(defaultValue);
+    private void Visit(DefaultValue? defaultValue)
+    {
+        if (defaultValue == null)
+            return;
 
-            // children
-            Visit(defaultValue.Value);
+        // enter
+        foreach (var visitor in _options.DefaultValue)
+            visitor.Enter(defaultValue);
 
-            // leave
-            foreach (var visitor in _options.DefaultValue)
-                visitor.Leave(defaultValue);
-        }
+        // children
+        Visit(defaultValue.Value);
 
-        private void Visit(TypeBase? type)
-        {
-            if (type == null)
-                return;
-            
-            // enter
-            foreach (var visitor in _options.Type)
-                visitor.Enter(type);
-
-            // leave
-            foreach (var visitor in _options.Type)
-                visitor.Leave(type);
-        }
+        // leave
+        foreach (var visitor in _options.DefaultValue)
+            visitor.Leave(defaultValue);
+    }
+
+    private void Visit(TypeBase? type)
+    {
+        if (type == null)
+            return;
+
+        // enter
+        foreach (var visitor in _options.Type)
+            visitor.Enter(type);
+
+        // leave
+        foreach (var visitor in _options.Type)
+            visitor.Leave(type);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.language/Visitors/VisitAllBase.cs b/src/graphql.language/Visitors/VisitAllBase.cs
index ceab9c87f..7f4ef30c4 100644
--- a/src/graphql.language/Visitors/VisitAllBase.cs
+++ b/src/graphql.language/Visitors/VisitAllBase.cs
@@ -1,142 +1,141 @@
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language.Visitors
+namespace Tanka.GraphQL.Language.Visitors;
+
+public abstract class VisitAllBase :
+    IVisit<ExecutableDocument>,
+    IVisit<FragmentDefinition>,
+    IVisit<OperationDefinition>,
+    IVisit<SelectionSet>,
+    IVisit<ISelection>,
+    IVisit<FieldSelection>,
+    IVisit<InlineFragment>,
+    IVisit<FragmentSpread>,
+    IVisit<Argument>,
+    IVisit<NamedType>,
+    IVisit<VariableDefinition>,
+    IVisit<DefaultValue>,
+    IVisit<ValueBase>,
+    IVisit<Directive>,
+    IVisit<TypeBase>
 {
-    public abstract class VisitAllBase :
-        IVisit<ExecutableDocument>,
-        IVisit<FragmentDefinition>,
-        IVisit<OperationDefinition>,
-        IVisit<SelectionSet>, 
-        IVisit<ISelection>,
-        IVisit<FieldSelection>,
-        IVisit<InlineFragment>,
-        IVisit<FragmentSpread>,
-        IVisit<Argument>,
-        IVisit<NamedType>,
-        IVisit<VariableDefinition>,
-        IVisit<DefaultValue>,
-        IVisit<ValueBase>,
-        IVisit<Directive>,
-        IVisit<TypeBase>
-    {
-        public virtual void Enter(ExecutableDocument document)
-        {
-        }
-
-        public virtual void Leave(ExecutableDocument document)
-        {
-        }
-
-        public virtual void Enter(FragmentDefinition definition)
-        {
-        }
-
-        public virtual void Leave(FragmentDefinition definition)
-        {
-        }
-
-        public virtual void Enter(OperationDefinition definition)
-        {
-        }
-
-        public virtual void Leave(OperationDefinition definition)
-        {
-        }
-
-        public virtual void Enter(SelectionSet definition)
-        {
-        }
-
-        public virtual void Leave(SelectionSet definition)
-        {
-        }
-
-        public virtual void Enter(ISelection selection)
-        {
-        }
-
-        public virtual void Enter(FieldSelection selection)
-        {
-        }
-
-        public virtual void Enter(InlineFragment selection)
-        {
-        }
-
-        public virtual void Enter(FragmentSpread selection)
-        {
-        }
-
-        public virtual void Enter(Argument argument)
-        {
-        }
-
-        public virtual void Enter(ValueBase value)
-        {
-        }
-
-        public virtual void Enter(NamedType namedType)
-        {
-        }
-
-        public virtual void Enter(Directive directive)
-        {
-        }
-
-        public virtual void Enter(VariableDefinition definition)
-        {
-        }
-
-        public virtual void Enter(DefaultValue defaultValue)
-        {
-        }
-
-        public virtual void Enter(TypeBase type)
-        {
-        }
-
-        public virtual void Leave(ISelection selection)
-        {
-        }
-
-        public virtual void Leave(FieldSelection selection)
-        {
-        }
-
-        public virtual void Leave(InlineFragment selection)
-        {
-        }
-
-        public virtual void Leave(FragmentSpread selection)
-        {
-        }
-
-        public virtual void Leave(Argument argument)
-        {
-        }
-
-        public virtual void Leave(ValueBase value)
-        {
-        }
+    public virtual void Enter(Argument argument)
+    {
+    }
+
+    public virtual void Leave(Argument argument)
+    {
+    }
+
+    public virtual void Enter(DefaultValue defaultValue)
+    {
+    }
+
+    public virtual void Leave(DefaultValue defaultValue)
+    {
+    }
+
+    public virtual void Enter(Directive directive)
+    {
+    }
+
+    public virtual void Leave(Directive directive)
+    {
+    }
+
+    public virtual void Enter(ExecutableDocument document)
+    {
+    }
+
+    public virtual void Leave(ExecutableDocument document)
+    {
+    }
 
-        public virtual void Leave(NamedType namedType)
-        {
-        }
+    public virtual void Enter(FieldSelection selection)
+    {
+    }
 
-        public virtual void Leave(Directive directive)
-        {
-        }
+    public virtual void Leave(FieldSelection selection)
+    {
+    }
 
-        public virtual void Leave(VariableDefinition definition)
-        {
-        }
+    public virtual void Enter(FragmentDefinition definition)
+    {
+    }
 
-        public virtual void Leave(DefaultValue defaultValue)
-        {
-        }
+    public virtual void Leave(FragmentDefinition definition)
+    {
+    }
 
-        public virtual void Leave(TypeBase defaultValue)
-        {
-        }
+    public virtual void Enter(FragmentSpread selection)
+    {
+    }
+
+    public virtual void Leave(FragmentSpread selection)
+    {
+    }
+
+    public virtual void Enter(InlineFragment selection)
+    {
+    }
+
+    public virtual void Leave(InlineFragment selection)
+    {
+    }
+
+    public virtual void Enter(ISelection selection)
+    {
+    }
+
+    public virtual void Leave(ISelection selection)
+    {
+    }
+
+    public virtual void Enter(NamedType namedType)
+    {
+    }
+
+    public virtual void Leave(NamedType namedType)
+    {
+    }
+
+    public virtual void Enter(OperationDefinition definition)
+    {
+    }
+
+    public virtual void Leave(OperationDefinition definition)
+    {
+    }
+
+    public virtual void Enter(SelectionSet definition)
+    {
+    }
+
+    public virtual void Leave(SelectionSet definition)
+    {
+    }
+
+    public virtual void Enter(TypeBase type)
+    {
+    }
+
+    public virtual void Leave(TypeBase defaultValue)
+    {
+    }
+
+    public virtual void Enter(ValueBase value)
+    {
+    }
+
+    public virtual void Leave(ValueBase value)
+    {
+    }
+
+    public virtual void Enter(VariableDefinition definition)
+    {
+    }
+
+    public virtual void Leave(VariableDefinition definition)
+    {
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/DTOs/ObjectDictionaryConverter.cs b/src/graphql.server.links/DTOs/ObjectDictionaryConverter.cs
index 2a3e5d3d8..8f10583dd 100644
--- a/src/graphql.server.links/DTOs/ObjectDictionaryConverter.cs
+++ b/src/graphql.server.links/DTOs/ObjectDictionaryConverter.cs
@@ -3,95 +3,94 @@
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-namespace Tanka.GraphQL.Server.Links.DTOs
+namespace Tanka.GraphQL.Server.Links.DTOs;
+
+public class ObjectDictionaryConverter : JsonConverter<Dictionary<string, object>>
 {
-    public class ObjectDictionaryConverter : JsonConverter<Dictionary<string, object>>
+    public override Dictionary<string, object> Read(ref Utf8JsonReader reader, Type typeToConvert,
+        JsonSerializerOptions options)
     {
-        public override Dictionary<string, object> Read(ref Utf8JsonReader reader, Type typeToConvert,
-            JsonSerializerOptions options)
-        {
-            using var doc = JsonDocument.ParseValue(ref reader);
-            var element = doc.RootElement;
+        using var doc = JsonDocument.ParseValue(ref reader);
+        var element = doc.RootElement;
 
-            return ReadObject(ref element, options);
-        }
+        return ReadObject(ref element, options);
+    }
 
-        public override void Write(Utf8JsonWriter writer, Dictionary<string, object> value,
-            JsonSerializerOptions options)
+    public override void Write(Utf8JsonWriter writer, Dictionary<string, object> value,
+        JsonSerializerOptions options)
+    {
+        writer.WriteStartObject();
+        foreach (var kvp in value)
         {
-            writer.WriteStartObject();
-            foreach (var kvp in value)
-            {
-                writer.WritePropertyName(kvp.Key);
-                JsonSerializer.Serialize(writer, kvp.Value, options);
-            }
-
-            writer.WriteEndObject();
+            writer.WritePropertyName(kvp.Key);
+            JsonSerializer.Serialize(writer, kvp.Value, options);
         }
 
-        private Dictionary<string, object> ReadObject(ref JsonElement element, JsonSerializerOptions options)
-        {
-            var result = new Dictionary<string, object>();
-            foreach (var property in element.EnumerateObject())
-            {
-                var name = property.Name;
-                var value = property.Value;
-                var convertedValue = ReadValue(ref value, options);
-                result[name] = convertedValue;
-            }
+        writer.WriteEndObject();
+    }
 
-            return result;
+    private Dictionary<string, object> ReadObject(ref JsonElement element, JsonSerializerOptions options)
+    {
+        var result = new Dictionary<string, object>();
+        foreach (var property in element.EnumerateObject())
+        {
+            var name = property.Name;
+            var value = property.Value;
+            var convertedValue = ReadValue(ref value, options);
+            result[name] = convertedValue;
         }
 
-        private object ReadValue(ref JsonElement element, JsonSerializerOptions options)
-        {
-            if (element.ValueKind == JsonValueKind.Null)
-                return null;
+        return result;
+    }
 
-            if (element.ValueKind == JsonValueKind.Object) return ReadObject(ref element, options);
+    private object ReadValue(ref JsonElement element, JsonSerializerOptions options)
+    {
+        if (element.ValueKind == JsonValueKind.Null)
+            return null;
 
-            if (element.ValueKind == JsonValueKind.Array)
-            {
-                var items = new List<object>();
-                foreach (var arrayElement in element.EnumerateArray())
-                {
-                    var v = arrayElement;
-                    var arrayValue = ReadValue(ref v, options);
-                    items.Add(arrayValue);
-                }
+        if (element.ValueKind == JsonValueKind.Object) return ReadObject(ref element, options);
 
-                return items;
+        if (element.ValueKind == JsonValueKind.Array)
+        {
+            var items = new List<object>();
+            foreach (var arrayElement in element.EnumerateArray())
+            {
+                var v = arrayElement;
+                var arrayValue = ReadValue(ref v, options);
+                items.Add(arrayValue);
             }
 
-            object value;
-            switch (element.ValueKind)
+            return items;
+        }
+
+        object value;
+        switch (element.ValueKind)
+        {
+            case JsonValueKind.True:
+                value = true;
+                break;
+            case JsonValueKind.False:
+                value = false;
+                break;
+            case JsonValueKind.Number:
             {
-                case JsonValueKind.True:
-                    value = true;
-                    break;
-                case JsonValueKind.False:
-                    value = false;
-                    break;
-                case JsonValueKind.Number:
-                {
-                    if (element.TryGetInt32(out var intValue))
-                        value = intValue;
-                    else if (element.TryGetInt64(out var longValue))
-                        value = longValue;
-                    else
-                        value = element.GetDouble();
+                if (element.TryGetInt32(out var intValue))
+                    value = intValue;
+                else if (element.TryGetInt64(out var longValue))
+                    value = longValue;
+                else
+                    value = element.GetDouble();
 
-                    break;
-                }
-                case JsonValueKind.String:
-                    value = element.GetString();
-                    break;
-                default:
-                    value = element.GetRawText();
-                    break;
+                break;
             }
-
-            return value;
+            case JsonValueKind.String:
+                value = element.GetString();
+                break;
+            default:
+                value = element.GetRawText();
+                break;
         }
+
+        return value;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/DTOs/QueryRequest.cs b/src/graphql.server.links/DTOs/QueryRequest.cs
index 388eba1ce..293b6a78b 100644
--- a/src/graphql.server.links/DTOs/QueryRequest.cs
+++ b/src/graphql.server.links/DTOs/QueryRequest.cs
@@ -1,15 +1,13 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Server.Links.DTOs
-{
-    public class QueryRequest
-    {
-        public string Query { get; set; }
+namespace Tanka.GraphQL.Server.Links.DTOs;
 
-        public Dictionary<string, object> Variables { get; set; }
+public class QueryRequest
+{
+    public Dictionary<string, object> Extensions { get; set; }
 
-        public string OperationName { get; set; }
+    public string OperationName { get; set; }
+    public string Query { get; set; }
 
-        public Dictionary<string, object> Extensions { get; set; }
-    }
+    public Dictionary<string, object> Variables { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/ExecutionResultLink.cs b/src/graphql.server.links/ExecutionResultLink.cs
index f3d1dcc65..262b4188c 100644
--- a/src/graphql.server.links/ExecutionResultLink.cs
+++ b/src/graphql.server.links/ExecutionResultLink.cs
@@ -4,11 +4,9 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.Server.Links;
 
-namespace Tanka.GraphQL.Server.Links
-{
-    public delegate ValueTask<ChannelReader<ExecutionResult>> ExecutionResultLink(
-        ExecutableDocument document,
-        IReadOnlyDictionary<string, object> variables,
-        CancellationToken cancellationToken);
-}
\ No newline at end of file
+public delegate ValueTask<ChannelReader<ExecutionResult>> ExecutionResultLink(
+    ExecutableDocument document,
+    IReadOnlyDictionary<string, object> variables,
+    CancellationToken cancellationToken);
\ No newline at end of file
diff --git a/src/graphql.server.links/HttpLink.cs b/src/graphql.server.links/HttpLink.cs
index a447a4c9e..21745186e 100644
--- a/src/graphql.server.links/HttpLink.cs
+++ b/src/graphql.server.links/HttpLink.cs
@@ -7,99 +7,98 @@
 using System.Threading;
 using System.Threading.Channels;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public class HttpLink
 {
-    public class HttpLink
+    private static readonly JsonSerializerOptions _jsonOptions = new()
     {
-        private readonly HttpClient _client;
-        private readonly Func<HttpResponseMessage, ValueTask<ExecutionResult>> _transformResponse;
-
-        private static readonly JsonSerializerOptions _jsonOptions = new JsonSerializerOptions()
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        Converters =
         {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-            Converters =
-            {
-                new ObjectDictionaryConverter()
-            }
-        };
-        private readonly string _url;
-
-        private readonly
-            Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
-                HttpRequestMessage> _transformRequest;
-
-        public HttpLink(
-            string url,
-            Func<HttpClient> createClient = null,
-            Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
-                HttpRequestMessage> transformRequest = null,
-            Func<HttpResponseMessage, ValueTask<ExecutionResult>> transformResponse = null)
-        {
-            if (createClient == null)
-                createClient = () => new HttpClient();
+            new ObjectDictionaryConverter()
+        }
+    };
 
-            if (transformRequest == null)
-                transformRequest = DefaultTransformRequest;
+    private readonly HttpClient _client;
 
-            if (transformResponse == null)
-                transformResponse = DefaultTransformResponse;
+    private readonly
+        Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
+            HttpRequestMessage> _transformRequest;
 
-            _url = url;
-            _client = createClient();
-            _transformRequest = transformRequest;
-            _transformResponse = transformResponse;
-        }
+    private readonly Func<HttpResponseMessage, ValueTask<ExecutionResult>> _transformResponse;
+    private readonly string _url;
 
-        public static HttpRequestMessage DefaultTransformRequest(
-            (ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url) operation)
-        {
-            var request = new HttpRequestMessage(HttpMethod.Post, operation.Url);
-            var query = new QueryRequest
-            {
-                Query = operation.Document.ToGraphQL(),
-                Variables = operation.Variables?.ToDictionary(kv => kv.Key, kv => kv.Value)
-            };
-            var jsonBytes = JsonSerializer.SerializeToUtf8Bytes(query, _jsonOptions);
-            var json = Encoding.UTF8.GetString(jsonBytes);
-            request.Content = new StringContent(json, Encoding.UTF8, "application/json");
-
-            return request;
-        }
+    public HttpLink(
+        string url,
+        Func<HttpClient> createClient = null,
+        Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
+            HttpRequestMessage> transformRequest = null,
+        Func<HttpResponseMessage, ValueTask<ExecutionResult>> transformResponse = null)
+    {
+        if (createClient == null)
+            createClient = () => new HttpClient();
 
-        public static async ValueTask<ExecutionResult> DefaultTransformResponse(HttpResponseMessage response)
-        {
-            response.EnsureSuccessStatusCode();
+        if (transformRequest == null)
+            transformRequest = DefaultTransformRequest;
 
-            var bytes = await response.Content.ReadAsByteArrayAsync();
-            return JsonSerializer.Deserialize<ExecutionResult>(bytes, _jsonOptions);
-        }
+        if (transformResponse == null)
+            transformResponse = DefaultTransformResponse;
 
-        public async ValueTask<ChannelReader<ExecutionResult>> Execute(ExecutableDocument document,
-            IReadOnlyDictionary<string, object> variables, CancellationToken cancellationToken)
+        _url = url;
+        _client = createClient();
+        _transformRequest = transformRequest;
+        _transformResponse = transformResponse;
+    }
+
+    public static HttpRequestMessage DefaultTransformRequest(
+        (ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url) operation)
+    {
+        var request = new HttpRequestMessage(HttpMethod.Post, operation.Url);
+        var query = new QueryRequest
         {
-            var request = _transformRequest((document, variables, _url));
+            Query = operation.Document.ToGraphQL(),
+            Variables = operation.Variables?.ToDictionary(kv => kv.Key, kv => kv.Value)
+        };
+        var jsonBytes = JsonSerializer.SerializeToUtf8Bytes(query, _jsonOptions);
+        var json = Encoding.UTF8.GetString(jsonBytes);
+        request.Content = new StringContent(json, Encoding.UTF8, "application/json");
+
+        return request;
+    }
+
+    public static async ValueTask<ExecutionResult> DefaultTransformResponse(HttpResponseMessage response)
+    {
+        response.EnsureSuccessStatusCode();
+
+        var bytes = await response.Content.ReadAsByteArrayAsync();
+        return JsonSerializer.Deserialize<ExecutionResult>(bytes, _jsonOptions);
+    }
 
-            if (request == null)
-                throw new InvalidOperationException(
-                    "Executing HttpLink failed. Transform request resulted in null request.");
+    public async ValueTask<ChannelReader<ExecutionResult>> Execute(ExecutableDocument document,
+        IReadOnlyDictionary<string, object> variables, CancellationToken cancellationToken)
+    {
+        var request = _transformRequest((document, variables, _url));
 
-            var response = await _client.SendAsync(request, cancellationToken);
-            var result = await _transformResponse(response);
-            var channel = Channel.CreateBounded<ExecutionResult>(1);
+        if (request == null)
+            throw new InvalidOperationException(
+                "Executing HttpLink failed. Transform request resulted in null request.");
 
-            if (result == null)
-                throw new InvalidOperationException(
-                    "Executing HttpLink failed. Transform response resulted in null result.");
+        var response = await _client.SendAsync(request, cancellationToken);
+        var result = await _transformResponse(response);
+        var channel = Channel.CreateBounded<ExecutionResult>(1);
 
-            await channel.Writer.WriteAsync(result, cancellationToken);
-            channel.Writer.TryComplete();
+        if (result == null)
+            throw new InvalidOperationException(
+                "Executing HttpLink failed. Transform response resulted in null result.");
 
-            return channel;
-        }
+        await channel.Writer.WriteAsync(result, cancellationToken);
+        channel.Writer.TryComplete();
+
+        return channel;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/HubConnectionExtensions.cs b/src/graphql.server.links/HubConnectionExtensions.cs
index 22e509fda..7d904b480 100644
--- a/src/graphql.server.links/HubConnectionExtensions.cs
+++ b/src/graphql.server.links/HubConnectionExtensions.cs
@@ -4,21 +4,20 @@
 using Microsoft.AspNetCore.SignalR.Client;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class HubConnectionExtensions
 {
-    public static class HubConnectionExtensions
+    public static async Task<ChannelReader<ExecutionResult>> StreamQueryAsync(
+        this HubConnection connection,
+        QueryRequest query,
+        CancellationToken cancellationToken)
     {
-        public static async Task<ChannelReader<ExecutionResult>> StreamQueryAsync(
-            this HubConnection connection,
-            QueryRequest query,
-            CancellationToken cancellationToken)
-        {
-            var channel = await connection.StreamAsChannelAsync<ExecutionResult>(
-                "query",
-                query,
-                cancellationToken);
+        var channel = await connection.StreamAsChannelAsync<ExecutionResult>(
+            "query",
+            query,
+            cancellationToken);
 
-            return channel;
-        }
+        return channel;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/IntrospectionParser.cs b/src/graphql.server.links/IntrospectionParser.cs
index af286c2ba..224ece979 100644
--- a/src/graphql.server.links/IntrospectionParser.cs
+++ b/src/graphql.server.links/IntrospectionParser.cs
@@ -1,93 +1,90 @@
 using System;
-using System.IO.Pipelines;
 using System.Text;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using Tanka.GraphQL.Introspection;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class IntrospectionParser
 {
-    public static class IntrospectionParser
+    private static readonly JsonSerializerOptions _jsonOptions = new()
     {
-        private static JsonSerializerOptions _jsonOptions = new JsonSerializerOptions()
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        Converters =
         {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-            Converters =
-            {
-                new DirectiveLocationConverter(),
-                new TypeKindConverter()
-            }
-        };
+            new DirectiveLocationConverter(),
+            new TypeKindConverter()
+        }
+    };
 
-        public static IntrospectionResult Deserialize(
-            string introspectionResult)
-        {
-            //todo: this is awkward
-            var bytes = Encoding.UTF8.GetBytes(introspectionResult);
+    public static IntrospectionResult Deserialize(
+        string introspectionResult)
+    {
+        //todo: this is awkward
+        var bytes = Encoding.UTF8.GetBytes(introspectionResult);
 
-            var result = JsonSerializer
-                .Deserialize<IntrospectionExecutionResult>(bytes, _jsonOptions);
+        var result = JsonSerializer
+            .Deserialize<IntrospectionExecutionResult>(bytes, _jsonOptions);
 
-            return new IntrospectionResult
-            {
-                Schema = result.Data.Schema
-            };
-        }
+        return new IntrospectionResult
+        {
+            Schema = result.Data.Schema
+        };
     }
+}
 
-    internal class IntrospectionExecutionResult
-    {
-        [JsonPropertyName("data")]
-        public IntrospectionExecutionResultData Data { get; set; }
-    }
+internal class IntrospectionExecutionResult
+{
+    [JsonPropertyName("data")] public IntrospectionExecutionResultData Data { get; set; }
+}
 
-    internal class IntrospectionExecutionResultData
-    {
-        [JsonPropertyName("__schema")]
-        public __Schema Schema { get; set; }
-    }
+internal class IntrospectionExecutionResultData
+{
+    [JsonPropertyName("__schema")] public __Schema Schema { get; set; }
+}
 
-    internal class DirectiveLocationConverter : JsonConverter<__DirectiveLocation>
+internal class DirectiveLocationConverter : JsonConverter<__DirectiveLocation>
+{
+    public override __DirectiveLocation Read(ref Utf8JsonReader reader, Type typeToConvert,
+        JsonSerializerOptions options)
     {
-        public override __DirectiveLocation Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            if (reader.TokenType != JsonTokenType.String)
-                throw new InvalidOperationException(
-                    $"Unexpected token type '{reader.TokenType}'. Expected {JsonTokenType.String}");
+        if (reader.TokenType != JsonTokenType.String)
+            throw new InvalidOperationException(
+                $"Unexpected token type '{reader.TokenType}'. Expected {JsonTokenType.String}");
 
-            var value = reader.GetString();
-            //reader.Read();
+        var value = reader.GetString();
+        //reader.Read();
 
-            var enumValue = (__DirectiveLocation) Enum.Parse(typeof(__DirectiveLocation), value, true);
+        var enumValue = (__DirectiveLocation)Enum.Parse(typeof(__DirectiveLocation), value, true);
 
-            return enumValue;
-        }
+        return enumValue;
+    }
 
-        public override void Write(Utf8JsonWriter writer, __DirectiveLocation value, JsonSerializerOptions options)
-        {
-            throw new NotImplementedException();
-        }
+    public override void Write(Utf8JsonWriter writer, __DirectiveLocation value, JsonSerializerOptions options)
+    {
+        throw new NotImplementedException();
     }
+}
 
-    internal class TypeKindConverter : JsonConverter<__TypeKind>
+internal class TypeKindConverter : JsonConverter<__TypeKind>
+{
+    public override __TypeKind Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        public override __TypeKind Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-        {
-            if (reader.TokenType != JsonTokenType.String)
-                throw new InvalidOperationException(
-                    $"Unexpected token type '{reader.TokenType}'. Expected {JsonTokenType.String}");
+        if (reader.TokenType != JsonTokenType.String)
+            throw new InvalidOperationException(
+                $"Unexpected token type '{reader.TokenType}'. Expected {JsonTokenType.String}");
 
-            var value = reader.GetString();
-            //reader.Read();
+        var value = reader.GetString();
+        //reader.Read();
 
-            var enumValue = (__TypeKind) Enum.Parse(typeof(__TypeKind), value, true);
+        var enumValue = (__TypeKind)Enum.Parse(typeof(__TypeKind), value, true);
 
-            return enumValue;
-        }
+        return enumValue;
+    }
 
-        public override void Write(Utf8JsonWriter writer, __TypeKind value, JsonSerializerOptions options)
-        {
-            throw new NotImplementedException();
-        }
+    public override void Write(Utf8JsonWriter writer, __TypeKind value, JsonSerializerOptions options)
+    {
+        throw new NotImplementedException();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/PreExecutedResolverResult.cs b/src/graphql.server.links/PreExecutedResolverResult.cs
index 9b33693be..b22632cf9 100644
--- a/src/graphql.server.links/PreExecutedResolverResult.cs
+++ b/src/graphql.server.links/PreExecutedResolverResult.cs
@@ -5,54 +5,54 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public class PreExecutedResolverResult : IResolverResult
 {
-    public class PreExecutedResolverResult : IResolverResult
-    {
-        private readonly IDictionary<string, object> _data;
-        private readonly IEnumerable<ExecutionError> _errors;
-        private readonly Dictionary<string, object> _extensions;
+    private readonly IDictionary<string, object> _data;
+    private readonly IEnumerable<ExecutionError> _errors;
+    private readonly Dictionary<string, object> _extensions;
 
-        public PreExecutedResolverResult(ExecutionResult executionResult)
-        {
-            _data = executionResult.Data;
-            _errors = executionResult.Errors;
-            _extensions = executionResult.Extensions;
-        }
+    public PreExecutedResolverResult(ExecutionResult executionResult)
+    {
+        _data = executionResult.Data;
+        _errors = executionResult.Errors;
+        _extensions = executionResult.Extensions;
+    }
 
-        public object Value => _data;
+    public object Value => _data;
 
-        public ValueTask<object> CompleteValueAsync(IResolverContext context)
+    public ValueTask<object> CompleteValueAsync(IResolverContext context)
+    {
+        if (_errors != null && _errors.Any())
         {
-            if (_errors != null && _errors.Any())
-            {
-                var first = _errors.First();
-                throw new CompleteValueException(
-                    $"{first.Message}",
-                    null,
-                    context.Path,
-                    new Dictionary<string, object>
+            var first = _errors.First();
+            throw new CompleteValueException(
+                $"{first.Message}",
+                null,
+                context.Path,
+                new Dictionary<string, object>
+                {
+                    ["remoteError"] = new
                     {
-                        ["remoteError"] = new
-                        {
-                            error = first,
-                            data = _data,
-                            errors = _errors,
-                            extensions = _extensions
-                        }
-                    },
-                    context.Selection);
-            }
+                        error = first,
+                        data = _data,
+                        errors = _errors,
+                        extensions = _extensions
+                    }
+                },
+                context.Selection);
+        }
 
-            if (!_data.TryGetValue(context.FieldName, out var value))
-                throw new CompleteValueException(
-                    $"Could not complete value for field '{context.FieldName}:{context.Field.Type}'. " +
-                    $"Could not find field value from execution result. Fields found '{string.Join(",", _data.Keys)}'",
-                    context.Path,
-                    context.Selection);
+        if (!_data.TryGetValue(context.FieldName, out var value))
+            throw new CompleteValueException(
+                $"Could not complete value for field '{context.FieldName}:{context.Field.Type}'. " +
+                $"Could not find field value from execution result. Fields found '{string.Join(",", _data.Keys)}'",
+                context.Path,
+                context.Selection);
 
-            var resolveResult = new CompleteValueResult(value, context.Schema.GetRequiredNamedType<ObjectDefinition>(context.Field.Type.Unwrap().Name));
-            return resolveResult.CompleteValueAsync(context);
-        }
+        var resolveResult = new CompleteValueResult(value,
+            context.Schema.GetRequiredNamedType<ObjectDefinition>(context.Field.Type.Unwrap().Name));
+        return resolveResult.CompleteValueAsync(context);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server.links/RemoteLinks.cs b/src/graphql.server.links/RemoteLinks.cs
index 536708278..8b6a4ffe3 100644
--- a/src/graphql.server.links/RemoteLinks.cs
+++ b/src/graphql.server.links/RemoteLinks.cs
@@ -5,95 +5,94 @@
 using System.Threading;
 using System.Threading.Channels;
 using System.Threading.Tasks;
-
 using Microsoft.AspNetCore.SignalR.Client;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server.Links
+namespace Tanka.GraphQL.Server.Links;
+
+public static class RemoteLinks
 {
-    public static class RemoteLinks
+    /// <summary>
+    ///     Static data link
+    /// </summary>
+    /// <param name="result">Execution result</param>
+    /// <returns></returns>
+    public static ExecutionResultLink Static(ExecutionResult result)
     {
-        /// <summary>
-        ///     Static data link
-        /// </summary>
-        /// <param name="result">Execution result</param>
-        /// <returns></returns>
-        public static ExecutionResultLink Static(ExecutionResult result)
+        return async (document, variables, cancellationToken) =>
         {
-            return async (document, variables, cancellationToken) =>
-            {
-                var channel = Channel.CreateBounded<ExecutionResult>(1);
+            var channel = Channel.CreateBounded<ExecutionResult>(1);
 
-                await channel.Writer.WriteAsync(result, cancellationToken);
-                channel.Writer.TryComplete();
+            await channel.Writer.WriteAsync(result, cancellationToken);
+            channel.Writer.TryComplete();
 
-                return channel;
-            };
-        }
+            return channel;
+        };
+    }
 
-        /// <summary>
-        ///     Http request link using <see cref="HttpLink" />
-        /// </summary>
-        /// <param name="url"></param>
-        /// <param name="createClient"></param>
-        /// <param name="transformRequest"></param>
-        /// <param name="transformResponse"></param>
-        /// <returns></returns>
-        public static ExecutionResultLink Http(
-            string url,
-            Func<HttpClient> createClient = null,
-            Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
-                HttpRequestMessage> transformRequest = null,
-            Func<HttpResponseMessage, ValueTask<ExecutionResult>> transformResponse = null)
-        {
-            var link = new HttpLink(url, createClient, transformRequest, transformResponse);
-            return link.Execute;
-        }
+    /// <summary>
+    ///     Http request link using <see cref="HttpLink" />
+    /// </summary>
+    /// <param name="url"></param>
+    /// <param name="createClient"></param>
+    /// <param name="transformRequest"></param>
+    /// <param name="transformResponse"></param>
+    /// <returns></returns>
+    public static ExecutionResultLink Http(
+        string url,
+        Func<HttpClient> createClient = null,
+        Func<(ExecutableDocument Document, IReadOnlyDictionary<string, object> Variables, string Url),
+            HttpRequestMessage> transformRequest = null,
+        Func<HttpResponseMessage, ValueTask<ExecutionResult>> transformResponse = null)
+    {
+        var link = new HttpLink(url, createClient, transformRequest, transformResponse);
+        return link.Execute;
+    }
+
+    /// <summary>
+    ///     Link to tanka server using SignalR
+    ///     <remarks>
+    ///         Connection will be managed by the link. It will be started once the query
+    ///         begins and stopped once the upstream reader completes.
+    ///     </remarks>
+    /// </summary>
+    /// <param name="connectionBuilderFunc">Must return new connection each call</param>
+    /// <returns></returns>
+    public static ExecutionResultLink SignalR(Func<CancellationToken, Task<HubConnection>> connectionBuilderFunc)
+    {
+        if (connectionBuilderFunc == null) throw new ArgumentNullException(nameof(connectionBuilderFunc));
 
-        /// <summary>
-        ///     Link to tanka server using SignalR
-        ///     <remarks>
-        ///         Connection will be managed by the link. It will be started once the query
-        ///         begins and stopped once the upstream reader completes.
-        ///     </remarks>
-        /// </summary>
-        /// <param name="connectionBuilderFunc">Must return new connection each call</param>
-        /// <returns></returns>
-        public static ExecutionResultLink SignalR(Func<CancellationToken, Task<HubConnection>> connectionBuilderFunc)
+        return async (document, variables, cancellationToken) =>
         {
-            if (connectionBuilderFunc == null) throw new ArgumentNullException(nameof(connectionBuilderFunc));
+            // start connection
+            var connection = await connectionBuilderFunc(cancellationToken);
+            await connection.StartAsync(cancellationToken);
 
-            return async (document, variables, cancellationToken) =>
+            // stream query results
+            var reader = await connection.StreamQueryAsync(new QueryRequest
             {
-                // start connection
-                var connection = await connectionBuilderFunc(cancellationToken);
-                await connection.StartAsync(cancellationToken);
-
-                // stream query results
-                var reader = await connection.StreamQueryAsync(new QueryRequest
-                {
-                    Query = document.ToGraphQL(),
-                    Variables = variables?.ToDictionary(kv => kv.Key, kv => kv.Value)
-                }, cancellationToken);
+                Query = document.ToGraphQL(),
+                Variables = variables?.ToDictionary(kv => kv.Key, kv => kv.Value)
+            }, cancellationToken);
 
-                // stop when done
-                var isSubscription = document.OperationDefinitions
-                    ?.Any(op => op.Operation == OperationType.Subscription) ?? false;
+            // stop when done
+            var isSubscription = document.OperationDefinitions
+                ?.Any(op => op.Operation == OperationType.Subscription) ?? false;
 
-                _ = Task.Factory.StartNew(async () =>
+            _ = Task.Factory.StartNew(async () =>
                 {
                     await reader.Completion;
                     await connection.StopAsync(CancellationToken.None);
                 }, isSubscription ? TaskCreationOptions.LongRunning : TaskCreationOptions.None)
-                    .Unwrap()
-                    .ContinueWith(result => throw new InvalidOperationException(
-                        $"Error when completing signalR connection.", result.Exception), TaskContinuationOptions.OnlyOnFaulted);
+                .Unwrap()
+                .ContinueWith(result => throw new InvalidOperationException(
+                        "Error when completing signalR connection.", result.Exception),
+                    TaskContinuationOptions.OnlyOnFaulted);
 
-                // data channel
-                return reader;
-            };
-        }
+            // data channel
+            return reader;
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/AppBuilderExtensions.cs b/src/graphql.server/AppBuilderExtensions.cs
index 0881b555e..1687e63cf 100644
--- a/src/graphql.server/AppBuilderExtensions.cs
+++ b/src/graphql.server/AppBuilderExtensions.cs
@@ -4,44 +4,42 @@
 using Microsoft.Extensions.DependencyInjection;
 using Tanka.GraphQL.Server.WebSockets;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public static class AppBuilderExtensions
 {
-    public static class AppBuilderExtensions
+    [Obsolete("UseEndpoints(endpoints => endpoints.MapTankaGraphQLWebSockets(\"path\"))")]
+    public static IApplicationBuilder UseTankaGraphQLWebSockets(
+        this IApplicationBuilder app,
+        PathString path)
     {
-        [Obsolete("UseEndpoints(endpoints => endpoints.MapTankaGraphQLWebSockets(\"path\"))")]
-        public static IApplicationBuilder UseTankaGraphQLWebSockets(
-            this IApplicationBuilder app,
-            PathString path)
+        app.Use(next => context =>
         {
-            app.Use(next => context =>
+            if (context.Request.Path.StartsWithSegments(path)
+                && context.WebSockets.IsWebSocketRequest)
             {
-                if (context.Request.Path.StartsWithSegments(path)
-                    && context.WebSockets.IsWebSocketRequest)
-                {
-                    var server = context.RequestServices.GetRequiredService<WebSocketServer>();
-                    return server.ProcessRequestAsync(context);
-                }
+                var server = context.RequestServices.GetRequiredService<WebSocketServer>();
+                return server.ProcessRequestAsync(context);
+            }
 
-                return next(context);
-            });
+            return next(context);
+        });
 
-            return app;
-        }
+        return app;
+    }
 
-        public static IApplicationBuilder UseTankaGraphQLWebSockets(
-            this IApplicationBuilder app)
+    public static IApplicationBuilder UseTankaGraphQLWebSockets(
+        this IApplicationBuilder app)
+    {
+        app.Use(next => context =>
         {
-            app.Use(next => context =>
-            {
-                if (!context.WebSockets.IsWebSocketRequest) 
-                    return next(context);
-
-                var server = context.RequestServices.GetRequiredService<WebSocketServer>();
-                return server.ProcessRequestAsync(context);
+            if (!context.WebSockets.IsWebSocketRequest)
+                return next(context);
 
-            });
+            var server = context.RequestServices.GetRequiredService<WebSocketServer>();
+            return server.ProcessRequestAsync(context);
+        });
 
-            return app;
-        }
+        return app;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ContextExtension.cs b/src/graphql.server/ContextExtension.cs
index abbeab900..08ee803e1 100644
--- a/src/graphql.server/ContextExtension.cs
+++ b/src/graphql.server/ContextExtension.cs
@@ -2,22 +2,21 @@
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ContextExtension<T> : IExecutorExtension
 {
-    public class ContextExtension<T> : IExecutorExtension
-    {
-        private readonly IServiceProvider _services;
+    private readonly IServiceProvider _services;
 
-        public ContextExtension(IServiceProvider services)
-        {
-            _services = services;
-        }
+    public ContextExtension(IServiceProvider services)
+    {
+        _services = services;
+    }
 
-        public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
-        {
-            var context = _services.GetRequiredService<T>();
-            IExtensionScope scope = new ContextExtensionScope<T>(context);
-            return Task.FromResult(scope);
-        }
+    public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
+    {
+        var context = _services.GetRequiredService<T>();
+        IExtensionScope scope = new ContextExtensionScope<T>(context);
+        return Task.FromResult(scope);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ContextExtensionScope.cs b/src/graphql.server/ContextExtensionScope.cs
index ceb21519d..749dbce06 100644
--- a/src/graphql.server/ContextExtensionScope.cs
+++ b/src/graphql.server/ContextExtensionScope.cs
@@ -4,56 +4,55 @@
 using Tanka.GraphQL.Validation;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ContextExtensionScope<T> : IExtensionScope
 {
-    public class ContextExtensionScope<T> : IExtensionScope
-    {
-        private readonly bool _dispose;
-
-        public ContextExtensionScope(T context, bool dispose = true)
-        {
-            _dispose = dispose;
-            Context = context;
-        }
-
-        public T Context { get; protected set; }
-
-        public ValueTask BeginValidationAsync()
-        {
-            return default;
-        }
-
-        public ValueTask EndValidationAsync(ValidationResult validationResult)
-        {
-            return default;
-        }
-
-        public ValueTask EndExecuteAsync(IExecutionResult executionResult)
-        {
-            if (Context is IDisposable disposable && _dispose)
-                disposable.Dispose();
-
-            return default;
-        }
-
-        public ValueTask BeginParseDocumentAsync()
-        {
-            return default;
-        }
-
-        public ValueTask EndParseDocumentAsync(ExecutableDocument document)
-        {
-            return default;
-        }
-
-        public ValueTask BeginResolveAsync(IResolverContext context)
-        {
-            return default;
-        }
-
-        public ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
-        {
-            return default;
-        }
+    private readonly bool _dispose;
+
+    public ContextExtensionScope(T context, bool dispose = true)
+    {
+        _dispose = dispose;
+        Context = context;
+    }
+
+    public T Context { get; protected set; }
+
+    public ValueTask BeginValidationAsync()
+    {
+        return default;
+    }
+
+    public ValueTask EndValidationAsync(ValidationResult validationResult)
+    {
+        return default;
+    }
+
+    public ValueTask EndExecuteAsync(IExecutionResult executionResult)
+    {
+        if (Context is IDisposable disposable && _dispose)
+            disposable.Dispose();
+
+        return default;
+    }
+
+    public ValueTask BeginParseDocumentAsync()
+    {
+        return default;
+    }
+
+    public ValueTask EndParseDocumentAsync(ExecutableDocument document)
+    {
+        return default;
+    }
+
+    public ValueTask BeginResolveAsync(IResolverContext context)
+    {
+        return default;
+    }
+
+    public ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
+    {
+        return default;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/EndpointRouteBuilderExtensions.cs b/src/graphql.server/EndpointRouteBuilderExtensions.cs
index de2dc0e0c..ede8025e6 100644
--- a/src/graphql.server/EndpointRouteBuilderExtensions.cs
+++ b/src/graphql.server/EndpointRouteBuilderExtensions.cs
@@ -3,29 +3,28 @@
 using Microsoft.AspNetCore.Http.Connections;
 using Microsoft.AspNetCore.Routing;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public static class EndpointRouteBuilderExtensions
 {
-    public static class EndpointRouteBuilderExtensions
+    public static HubEndpointConventionBuilder MapTankaGraphQLSignalR(
+        this IEndpointRouteBuilder routes,
+        string pattern,
+        Action<HttpConnectionDispatcherOptions> configureOptions = null)
     {
-        public static HubEndpointConventionBuilder MapTankaGraphQLSignalR(
-            this IEndpointRouteBuilder routes,
-            string pattern,
-            Action<HttpConnectionDispatcherOptions> configureOptions = null)
-        {
-            if (configureOptions != null)
-                return routes.MapHub<ServerHub>(pattern, configureOptions);
+        if (configureOptions != null)
+            return routes.MapHub<ServerHub>(pattern, configureOptions);
 
-            return routes.MapHub<ServerHub>(pattern);
-        }
+        return routes.MapHub<ServerHub>(pattern);
+    }
 
-        public static IEndpointConventionBuilder MapTankaGraphQLWebSockets(
-            this IEndpointRouteBuilder routes,
-            string pattern)
-        {
-            var app = routes.CreateApplicationBuilder();
-            app.UseTankaGraphQLWebSockets();
+    public static IEndpointConventionBuilder MapTankaGraphQLWebSockets(
+        this IEndpointRouteBuilder routes,
+        string pattern)
+    {
+        var app = routes.CreateApplicationBuilder();
+        app.UseTankaGraphQLWebSockets();
 
-            return routes.Map(pattern, app.Build());
-        }
+        return routes.Map(pattern, app.Build());
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ExecutionScopeProvider.cs b/src/graphql.server/ExecutionScopeProvider.cs
index 00f8b447b..3bae7cbdb 100644
--- a/src/graphql.server/ExecutionScopeProvider.cs
+++ b/src/graphql.server/ExecutionScopeProvider.cs
@@ -2,24 +2,23 @@
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ExecutionScopeProvider : IExecutorExtension
 {
-    public class ExecutionScopeProvider : IExecutorExtension
-    {
-        private readonly IServiceProvider _serviceProvider;
+    private readonly IServiceProvider _serviceProvider;
 
-        public ExecutionScopeProvider(IServiceProvider serviceProvider)
-        {
-            _serviceProvider = serviceProvider;
-        }
+    public ExecutionScopeProvider(IServiceProvider serviceProvider)
+    {
+        _serviceProvider = serviceProvider;
+    }
 
-        public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
-        {
-            var scope = _serviceProvider.CreateScope();
-            IExtensionScope context = new ContextExtensionScope<IServiceScope>(
-                scope);
+    public Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options)
+    {
+        var scope = _serviceProvider.CreateScope();
+        IExtensionScope context = new ContextExtensionScope<IServiceScope>(
+            scope);
 
-            return Task.FromResult(context);
-        }
+        return Task.FromResult(context);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/IQueryStreamService.cs b/src/graphql.server/IQueryStreamService.cs
index 6716ab3a8..10d514e7a 100644
--- a/src/graphql.server/IQueryStreamService.cs
+++ b/src/graphql.server/IQueryStreamService.cs
@@ -1,12 +1,11 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public interface IQueryStreamService
 {
-    public interface IQueryStreamService
-    {
-        Task<QueryStream> QueryAsync(
-            Query query,
-            CancellationToken cancellationToken);
-    }
+    Task<QueryStream> QueryAsync(
+        Query query,
+        CancellationToken cancellationToken);
 }
\ No newline at end of file
diff --git a/src/graphql.server/LogMessages.cs b/src/graphql.server/LogMessages.cs
index 9485f3266..600f4eb8e 100644
--- a/src/graphql.server/LogMessages.cs
+++ b/src/graphql.server/LogMessages.cs
@@ -3,55 +3,54 @@
 using Microsoft.Extensions.Logging;
 using Tanka.GraphQL.Language;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+internal static class LogMessages
 {
-    internal static class LogMessages
+    private static readonly Action<ILogger, string, string, Exception> QueryAction =
+        LoggerMessage.Define<string, string>(
+            LogLevel.Information,
+            default,
+            "Querying '{OperationName}' with '{Query}'");
+
+    private static readonly Action<ILogger, string, Exception> ExecutedAction =
+        LoggerMessage.Define<string>(
+            LogLevel.Information,
+            default,
+            "Executed '{OperationName}'");
+
+    private static readonly Action<ILogger, string, Exception> SubscribedAction =
+        LoggerMessage.Define<string>(
+            LogLevel.Information,
+            default,
+            "Subscribed '{OperationName}'");
+
+    private static readonly Action<ILogger, string, Exception> UnsubscribedAction =
+        LoggerMessage.Define<string>(
+            LogLevel.Information,
+            default,
+            "Unsubscribed '{OperationName}'");
+
+    internal static void Query(this ILogger logger, Query query)
+    {
+        QueryAction(logger, query.OperationName, query.Document.ToGraphQL(), null);
+    }
+
+    internal static void Executed(this ILogger logger, string operationName, Dictionary<string, object> variables,
+        Dictionary<string, object> extensions)
+    {
+        ExecutedAction(logger, operationName, null);
+    }
+
+    internal static void Subscribed(this ILogger logger, string operationName, Dictionary<string, object> variables,
+        Dictionary<string, object> extensions)
+    {
+        SubscribedAction(logger, operationName, null);
+    }
+
+    internal static void Unsubscribed(this ILogger logger, string operationName, Dictionary<string, object> variables,
+        Dictionary<string, object> extensions)
     {
-        private static readonly Action<ILogger, string, string, Exception> QueryAction =
-            LoggerMessage.Define<string, string>(
-                LogLevel.Information,
-                default(EventId),
-                "Querying '{OperationName}' with '{Query}'");
-
-        private static readonly Action<ILogger, string, Exception> ExecutedAction =
-            LoggerMessage.Define<string>(
-                LogLevel.Information,
-                default(EventId),
-                "Executed '{OperationName}'");
-
-        private static readonly Action<ILogger, string, Exception> SubscribedAction =
-            LoggerMessage.Define<string>(
-                LogLevel.Information,
-                default(EventId),
-                "Subscribed '{OperationName}'");
-
-        private static readonly Action<ILogger, string, Exception> UnsubscribedAction =
-            LoggerMessage.Define<string>(
-                LogLevel.Information,
-                default(EventId),
-                "Unsubscribed '{OperationName}'");
-
-        internal static void Query(this ILogger logger, Query query)
-        {
-            QueryAction(logger, query.OperationName, query.Document.ToGraphQL(), null);
-        }
-
-        internal static void Executed(this ILogger logger, string operationName, Dictionary<string, object> variables,
-            Dictionary<string, object> extensions)
-        {
-            ExecutedAction(logger, operationName, null);
-        }
-
-        internal static void Subscribed(this ILogger logger, string operationName, Dictionary<string, object> variables,
-            Dictionary<string, object> extensions)
-        {
-            SubscribedAction(logger, operationName, null);
-        }
-
-        internal static void Unsubscribed(this ILogger logger, string operationName, Dictionary<string, object> variables,
-            Dictionary<string, object> extensions)
-        {
-            UnsubscribedAction(logger, operationName, null);
-        }
+        UnsubscribedAction(logger, operationName, null);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/Query.cs b/src/graphql.server/Query.cs
index d5476a855..70facb8b8 100644
--- a/src/graphql.server/Query.cs
+++ b/src/graphql.server/Query.cs
@@ -1,17 +1,15 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.Server;
 
-namespace Tanka.GraphQL.Server
+public class Query
 {
-    public class Query
-    {
-        public ExecutableDocument Document { get; set; }
+    public ExecutableDocument Document { get; set; }
 
-        public Dictionary<string, object> Variables { get; set; }
+    public Dictionary<string, object> Extensions { get; set; }
 
-        public string OperationName { get; set; }
+    public string OperationName { get; set; }
 
-        public Dictionary<string, object> Extensions { get; set; }
-    }
+    public Dictionary<string, object> Variables { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql.server/QueryStream.cs b/src/graphql.server/QueryStream.cs
index 9e7479831..d9d48a6f6 100644
--- a/src/graphql.server/QueryStream.cs
+++ b/src/graphql.server/QueryStream.cs
@@ -1,14 +1,13 @@
 using System.Threading.Channels;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class QueryStream
 {
-    public class QueryStream
+    public QueryStream(ChannelReader<ExecutionResult> reader)
     {
-        public QueryStream(ChannelReader<ExecutionResult> reader)
-        {
-            Reader = reader;
-        }
-
-        public ChannelReader<ExecutionResult> Reader { get; }
+        Reader = reader;
     }
+
+    public ChannelReader<ExecutionResult> Reader { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.server/QueryStreamService.cs b/src/graphql.server/QueryStreamService.cs
index 349e361b6..8b4b1aef2 100644
--- a/src/graphql.server/QueryStreamService.cs
+++ b/src/graphql.server/QueryStreamService.cs
@@ -1,153 +1,143 @@
-
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Channels;
 using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class QueryStreamService : IQueryStreamService
 {
-    public class QueryStreamService : IQueryStreamService
+    private readonly List<IExecutorExtension> _extensions;
+    private readonly ILogger<QueryStreamService> _logger;
+    private readonly ILoggerFactory _loggerFactory;
+    private readonly ServerOptions _options;
+
+    public QueryStreamService(
+        IOptionsMonitor<ServerOptions> optionsMonitor,
+        ILoggerFactory loggerFactory,
+        IEnumerable<IExecutorExtension> extensions)
     {
-        private readonly List<IExecutorExtension> _extensions;
-        private readonly ILogger<QueryStreamService> _logger;
-        private readonly ILoggerFactory _loggerFactory;
-        private readonly ServerOptions _options;
-
-        public QueryStreamService(
-            IOptionsMonitor<ServerOptions> optionsMonitor,
-            ILoggerFactory loggerFactory,
-            IEnumerable<IExecutorExtension> extensions)
-        {
-            _options = optionsMonitor.CurrentValue;
-            _loggerFactory = loggerFactory;
-            _extensions = extensions.ToList();
-            _logger = loggerFactory.CreateLogger<QueryStreamService>();
-        }
+        _options = optionsMonitor.CurrentValue;
+        _loggerFactory = loggerFactory;
+        _extensions = extensions.ToList();
+        _logger = loggerFactory.CreateLogger<QueryStreamService>();
+    }
 
-        public async Task<QueryStream> QueryAsync(
-            Query query,
-            CancellationToken cancellationToken)
+    public async Task<QueryStream> QueryAsync(
+        Query query,
+        CancellationToken cancellationToken)
+    {
+        try
         {
-            try
+            _logger.Query(query);
+            var schemaOptions = _options;
+            var document = query.Document;
+            var schema = await schemaOptions.GetSchema(query);
+            var executionOptions = new ExecutionOptions
             {
-                _logger.Query(query);
-                var schemaOptions = _options;
-                var document = query.Document;
-                var schema = await schemaOptions.GetSchema(query);
-                var executionOptions = new ExecutionOptions
-                {
-                    Schema = schema,
-                    Document = document,
-                    OperationName = query.OperationName,
-                    VariableValues = query.Variables,
-                    InitialValue = null,
-                    LoggerFactory = _loggerFactory,
-                    Extensions = _extensions,
-                    Validate = (s, d, v) => ExecutionOptions.DefaultValidate(
-                        schemaOptions.ValidationRules,
-                        s,
-                        d,
-                        v)
-                };
-
-                // is subscription
-                if (document.OperationDefinitions
+                Schema = schema,
+                Document = document,
+                OperationName = query.OperationName,
+                VariableValues = query.Variables,
+                InitialValue = null,
+                LoggerFactory = _loggerFactory,
+                Extensions = _extensions,
+                Validate = (s, d, v) => ExecutionOptions.DefaultValidate(
+                    schemaOptions.ValidationRules,
+                    s,
+                    d,
+                    v)
+            };
+
+            // is subscription
+            if (document.OperationDefinitions
                     ?.Any(op => op.Operation == OperationType.Subscription) ?? false)
-                    return await SubscribeAsync(
-                        executionOptions,
-                        cancellationToken);
-
-
-                // is query or mutation
-                return await ExecuteAsync(
+                return await SubscribeAsync(
                     executionOptions,
                     cancellationToken);
-            }
-            catch (Exception e)
-            {
-                _logger.LogError($"Failed to execute query '{query.Document.ToGraphQL()}'. Error. '{e}'");
-                var channel = Channel.CreateBounded<ExecutionResult>(1);
-                channel.Writer.TryComplete(e);
-                return new QueryStream(channel);
-            }
-        }
 
-        private async Task<QueryStream> ExecuteAsync(
-            ExecutionOptions options,
-            CancellationToken cancellationToken)
+
+            // is query or mutation
+            return await ExecuteAsync(
+                executionOptions,
+                cancellationToken);
+        }
+        catch (Exception e)
         {
-            var result = await Executor.ExecuteAsync(options, cancellationToken);
+            _logger.LogError($"Failed to execute query '{query.Document.ToGraphQL()}'. Error. '{e}'");
+            var channel = Channel.CreateBounded<ExecutionResult>(1);
+            channel.Writer.TryComplete(e);
+            return new QueryStream(channel);
+        }
+    }
 
-            if (_logger.IsEnabled(LogLevel.Debug) && result.Errors != null)
-            {
-                foreach (var error in result.Errors)
-                {
-                    _logger.LogError($"GraphQL ERROR: '{error.Message}', Path: '{error.Path}'");
-                }
-            }
+    private async Task<QueryStream> ExecuteAsync(
+        ExecutionOptions options,
+        CancellationToken cancellationToken)
+    {
+        var result = await Executor.ExecuteAsync(options, cancellationToken);
 
-            var channel = Channel.CreateBounded<ExecutionResult>(1);
+        if (_logger.IsEnabled(LogLevel.Debug) && result.Errors != null)
+            foreach (var error in result.Errors)
+                _logger.LogError($"GraphQL ERROR: '{error.Message}', Path: '{error.Path}'");
 
-            await channel.Writer.WriteAsync(result, cancellationToken);
-            channel.Writer.TryComplete();
+        var channel = Channel.CreateBounded<ExecutionResult>(1);
 
-            _logger.Executed(options.OperationName, options.VariableValues, null);
-            return new QueryStream(channel);
-        }
+        await channel.Writer.WriteAsync(result, cancellationToken);
+        channel.Writer.TryComplete();
+
+        _logger.Executed(options.OperationName, options.VariableValues, null);
+        return new QueryStream(channel);
+    }
+
+    private async Task<QueryStream> SubscribeAsync(
+        ExecutionOptions options,
+        CancellationToken cancellationToken)
+    {
+        if (!cancellationToken.CanBeCanceled)
+            throw new InvalidOperationException(
+                "Invalid cancellation token. To unsubscribe the provided cancellation token must be cancellable.");
 
-        private async Task<QueryStream> SubscribeAsync(
-            ExecutionOptions options,
-            CancellationToken cancellationToken)
+        var unsubscribeSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+        var result = await Executor.SubscribeAsync(options, unsubscribeSource.Token);
+        _logger.Subscribed(options.OperationName, options.VariableValues, null);
+
+        unsubscribeSource.Token.Register(() =>
         {
-            if (!cancellationToken.CanBeCanceled)
-                throw new InvalidOperationException(
-                    "Invalid cancellation token. To unsubscribe the provided cancellation token must be cancellable.");
+            _logger?.Unsubscribed(
+                options.OperationName,
+                options.VariableValues,
+                null);
+        });
 
-            var unsubscribeSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
-            var result = await Executor.SubscribeAsync(options, unsubscribeSource.Token);
-            _logger.Subscribed(options.OperationName, options.VariableValues, null);
+        if (result.Errors != null && result.Errors.Any())
+        {
+            if (_logger.IsEnabled(LogLevel.Debug))
+                foreach (var error in result.Errors)
+                    _logger.LogError($"GraphQL ERROR: '{error.Message}', Path: '{error.Path}'");
 
-            unsubscribeSource.Token.Register(() =>
+            var channel = Channel.CreateBounded<ExecutionResult>(1);
+            await channel.Writer.WriteAsync(new ExecutionResult
             {
-                _logger?.Unsubscribed(
-                    options.OperationName,
-                    options.VariableValues,
-                    null);
-            });
+                Errors = result.Errors.ToList(),
+                Extensions = result.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
+            }, CancellationToken.None);
 
-            if (result.Errors != null && result.Errors.Any())
-            {
-                if (_logger.IsEnabled(LogLevel.Debug))
-                {
-                    foreach (var error in result.Errors)
-                    {
-                        _logger.LogError($"GraphQL ERROR: '{error.Message}', Path: '{error.Path}'");
-                    }
-                }
-
-                var channel = Channel.CreateBounded<ExecutionResult>(1);
-                await channel.Writer.WriteAsync(new ExecutionResult
-                {
-                    Errors = result.Errors.ToList(),
-                    Extensions = result.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
-                }, CancellationToken.None);
-
-                channel.Writer.TryComplete();
-
-                // unsubscribe
-                unsubscribeSource.Cancel();
-
-                return new QueryStream(channel.Reader);
-            }
-
-            var stream = new QueryStream(result.Source);
-            return stream;
+            channel.Writer.TryComplete();
+
+            // unsubscribe
+            unsubscribeSource.Cancel();
+
+            return new QueryStream(channel.Reader);
         }
+
+        var stream = new QueryStream(result.Source);
+        return stream;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ResolverContextExtensions.cs b/src/graphql.server/ResolverContextExtensions.cs
index 6a09b72f6..e83aac0a3 100644
--- a/src/graphql.server/ResolverContextExtensions.cs
+++ b/src/graphql.server/ResolverContextExtensions.cs
@@ -1,32 +1,31 @@
 using Microsoft.Extensions.DependencyInjection;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public static class ResolverContextExtensions
 {
-    public static class ResolverContextExtensions
+    /// <summary>
+    ///     Use context extension from execution scope
+    /// </summary>
+    /// <typeparam name="TContext"></typeparam>
+    /// <param name="context"></param>
+    /// <returns></returns>
+    public static TContext ContextExtension<TContext>(this IResolverContext context)
     {
-        /// <summary>
-        ///     Use context extension from execution scope
-        /// </summary>
-        /// <typeparam name="TContext"></typeparam>
-        /// <param name="context"></param>
-        /// <returns></returns>
-        public static TContext ContextExtension<TContext>(this IResolverContext context)
-        {
-            return context.Extension<ContextExtensionScope<TContext>>().Context;
-        }
+        return context.Extension<ContextExtensionScope<TContext>>().Context;
+    }
 
-        /// <summary>
-        ///     Get service from execution scope service provider
-        /// </summary>
-        /// <typeparam name="TService"></typeparam>
-        /// <param name="context"></param>
-        /// <returns></returns>
-        public static TService Use<TService>(this IResolverContext context)
-        {
-            return context.ContextExtension<IServiceScope>()
-                .ServiceProvider
-                .GetRequiredService<TService>();
-        }
+    /// <summary>
+    ///     Get service from execution scope service provider
+    /// </summary>
+    /// <typeparam name="TService"></typeparam>
+    /// <param name="context"></param>
+    /// <returns></returns>
+    public static TService Use<TService>(this IResolverContext context)
+    {
+        return context.ContextExtension<IServiceScope>()
+            .ServiceProvider
+            .GetRequiredService<TService>();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ServerBuilder.cs b/src/graphql.server/ServerBuilder.cs
index be7e24bc3..8961ee45b 100644
--- a/src/graphql.server/ServerBuilder.cs
+++ b/src/graphql.server/ServerBuilder.cs
@@ -7,194 +7,194 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ServerBuilder
 {
-    public class ServerBuilder
+    public ServerBuilder(IServiceCollection services, Action<ServerOptions> configure = null)
+    {
+        Services = services;
+        Initialize(configure);
+    }
+
+    public IServiceCollection Services { get; }
+
+    public ServerBuilder AddExtension<TExtension>()
+        where TExtension : class, IExecutorExtension
+    {
+        Services.TryAddEnumerable(ServiceDescriptor.Singleton<IExecutorExtension, TExtension>());
+
+        return this;
+    }
+
+    public ServerBuilder AddContextExtension<TContext>()
+    {
+        return AddExtension<ContextExtension<TContext>>();
+    }
+
+    public ServerBuilder ConfigureWebSockets()
+    {
+        Services.TryAddSingleton<WebSocketServer>();
+        Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
+        Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+
+        Services.AddOptions<WebSocketServerOptions>();
+
+        return this;
+    }
+
+    public ServerBuilder ConfigureWebSockets(Func<MessageContext, Task> accept)
+    {
+        if (accept == null) throw new ArgumentNullException(nameof(accept));
+
+        Services.TryAddSingleton<WebSocketServer>();
+        Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
+        Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+
+        var builder = Services.AddOptions<WebSocketServerOptions>();
+        builder.Configure(options => options.AcceptAsync = accept);
+
+        return this;
+    }
+
+    public ServerBuilder ConfigureWebSockets<TDep>(Func<MessageContext, TDep, Task> accept) where TDep : class
+    {
+        if (accept == null) throw new ArgumentNullException(nameof(accept));
+
+        Services.TryAddSingleton<WebSocketServer>();
+        Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
+        Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+
+        var builder = Services.AddOptions<WebSocketServerOptions>();
+        builder.Configure<TDep>((options, dep) => options.AcceptAsync = context => accept(context, dep));
+
+        return this;
+    }
+
+    public ServerBuilder ConfigureWebSockets<TDep, TDep1>(Func<MessageContext, TDep, TDep1, Task> accept)
+        where TDep : class where TDep1 : class
+    {
+        if (accept == null) throw new ArgumentNullException(nameof(accept));
+
+        Services.TryAddSingleton<WebSocketServer>();
+        Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
+        Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+
+        var builder = Services.AddOptions<WebSocketServerOptions>();
+        builder.Configure<TDep, TDep1>((options, dep, dep1) =>
+            options.AcceptAsync = context => accept(context, dep, dep1));
+
+        return this;
+    }
+
+    public ServerBuilder ConfigureWebSockets<TDep, TDep1, TDep2>(Func<MessageContext, TDep, TDep1, TDep2, Task> accept)
+        where TDep : class where TDep1 : class where TDep2 : class
     {
-        public ServerBuilder(IServiceCollection services, Action<ServerOptions> configure = null)
-        {
-            Services = services;
-            Initialize(configure);
-        }
+        if (accept == null) throw new ArgumentNullException(nameof(accept));
 
-        public IServiceCollection Services { get; }
+        Services.TryAddSingleton<WebSocketServer>();
+        Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
+        Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
 
-        public ServerBuilder AddExtension<TExtension>()
-            where TExtension : class, IExecutorExtension
-        {
-            Services.TryAddEnumerable(ServiceDescriptor.Singleton<IExecutorExtension, TExtension>());
+        var builder = Services.AddOptions<WebSocketServerOptions>();
+        builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
+            options.AcceptAsync = context => accept(context, dep, dep1, dep2));
 
-            return this;
-        }
+        return this;
+    }
+
+    public ServerBuilder ConfigureSchema(Func<ValueTask<ISchema>> schemaFactory)
+    {
+        if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
+
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure(options => options.GetSchema = _ => schemaFactory());
+        return this;
+    }
+
+    public ServerBuilder ConfigureSchema<TDep>(Func<TDep, ValueTask<ISchema>> schemaFactory) where TDep : class
+    {
+        if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
 
-        public ServerBuilder AddContextExtension<TContext>()
-        {
-            return AddExtension<ContextExtension<TContext>>();
-        }
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep>((options, dep) => options.GetSchema = _ => schemaFactory(dep));
 
-        public ServerBuilder ConfigureWebSockets()
-        {
-            Services.TryAddSingleton<WebSocketServer>();
-            Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
-            Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+        return this;
+    }
 
-            Services.AddOptions<WebSocketServerOptions>();
+    public ServerBuilder ConfigureSchema<TDep, TDep1>(Func<TDep, TDep1, ValueTask<ISchema>> schemaFactory)
+        where TDep : class where TDep1 : class
+    {
+        if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
 
-            return this;
-        }
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep, TDep1>((options, dep, dep1) => options.GetSchema = _ => schemaFactory(dep, dep1));
 
-        public ServerBuilder ConfigureWebSockets(Func<MessageContext, Task> accept)
-        {
-            if (accept == null) throw new ArgumentNullException(nameof(accept));
+        return this;
+    }
 
-            Services.TryAddSingleton<WebSocketServer>();
-            Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
-            Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+    public ServerBuilder ConfigureSchema<TDep, TDep1, TDep2>(Func<TDep, TDep1, TDep2, ValueTask<ISchema>> schemaFactory)
+        where TDep : class where TDep1 : class where TDep2 : class
+    {
+        if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
 
-            var builder = Services.AddOptions<WebSocketServerOptions>();
-            builder.Configure(options => options.AcceptAsync = accept);
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
+            options.GetSchema = _ => schemaFactory(dep, dep1, dep2));
 
-            return this;
-        }
+        return this;
+    }
 
-        public ServerBuilder ConfigureWebSockets<TDep>(Func<MessageContext, TDep, Task> accept) where TDep : class
-        {
-            if (accept == null) throw new ArgumentNullException(nameof(accept));
+    public ServerBuilder ConfigureRules(Func<CombineRule[], CombineRule[]> configureRules)
+    {
+        if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
 
-            Services.TryAddSingleton<WebSocketServer>();
-            Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
-            Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure(options => options.ValidationRules = configureRules(options.ValidationRules));
+        return this;
+    }
 
-            var builder = Services.AddOptions<WebSocketServerOptions>();
-            builder.Configure<TDep>((options, dep) => options.AcceptAsync = context => accept(context, dep));
+    public ServerBuilder ConfigureRules<TDep>(Func<CombineRule[], TDep, CombineRule[]> configureRules)
+        where TDep : class
+    {
+        if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
 
-            return this;
-        }
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep>((options, dep) =>
+            options.ValidationRules = configureRules(options.ValidationRules, dep));
+        return this;
+    }
 
-        public ServerBuilder ConfigureWebSockets<TDep, TDep1>(Func<MessageContext, TDep, TDep1, Task> accept)
-            where TDep : class where TDep1 : class
-        {
-            if (accept == null) throw new ArgumentNullException(nameof(accept));
+    public ServerBuilder ConfigureRules<TDep, TDep1>(Func<CombineRule[], TDep, TDep1, CombineRule[]> configureRules)
+        where TDep : class where TDep1 : class
+    {
+        if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
 
-            Services.TryAddSingleton<WebSocketServer>();
-            Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
-            Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep, TDep1>((options, dep, dep1) =>
+            options.ValidationRules = configureRules(options.ValidationRules, dep, dep1));
+        return this;
+    }
 
-            var builder = Services.AddOptions<WebSocketServerOptions>();
-            builder.Configure<TDep, TDep1>((options, dep, dep1) =>
-                options.AcceptAsync = context => accept(context, dep, dep1));
+    public ServerBuilder ConfigureRules<TDep, TDep1, TDep2>(
+        Func<CombineRule[], TDep, TDep1, TDep2, CombineRule[]> configureRules)
+        where TDep : class where TDep1 : class where TDep2 : class
+    {
+        if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
 
-            return this;
-        }
+        var builder = Services.AddOptions<ServerOptions>();
+        builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
+            options.ValidationRules = configureRules(options.ValidationRules, dep, dep1, dep2));
+        return this;
+    }
 
-        public ServerBuilder ConfigureWebSockets<TDep, TDep1, TDep2>(Func<MessageContext, TDep, TDep1, TDep2, Task> accept)
-            where TDep : class where TDep1 : class where TDep2 : class
-        {
-            if (accept == null) throw new ArgumentNullException(nameof(accept));
-
-            Services.TryAddSingleton<WebSocketServer>();
-            Services.TryAddScoped<IProtocolHandler, GraphQLWSProtocol>();
-            Services.TryAddScoped<IMessageContextAccessor, MessageContextAccessor>();
-
-            var builder = Services.AddOptions<WebSocketServerOptions>();
-            builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
-                options.AcceptAsync = context => accept(context, dep, dep1, dep2));
-
-            return this;
-        }
-
-        public ServerBuilder ConfigureSchema(Func<ValueTask<ISchema>> schemaFactory)
-        {
-            if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure(options => options.GetSchema = _ => schemaFactory());
-            return this;
-        }
-
-        public ServerBuilder ConfigureSchema<TDep>(Func<TDep, ValueTask<ISchema>> schemaFactory) where TDep : class
-        {
-            if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep>((options, dep) => options.GetSchema = _ => schemaFactory(dep));
-
-            return this;
-        }
-
-        public ServerBuilder ConfigureSchema<TDep, TDep1>(Func<TDep, TDep1, ValueTask<ISchema>> schemaFactory)
-            where TDep : class where TDep1 : class
-        {
-            if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep, TDep1>((options, dep, dep1) => options.GetSchema = _ => schemaFactory(dep, dep1));
-
-            return this;
-        }
-
-        public ServerBuilder ConfigureSchema<TDep, TDep1, TDep2>(Func<TDep, TDep1, TDep2, ValueTask<ISchema>> schemaFactory)
-            where TDep : class where TDep1 : class where TDep2 : class
-        {
-            if (schemaFactory == null) throw new ArgumentNullException(nameof(schemaFactory));
+    private OptionsBuilder<ServerOptions> Initialize(Action<ServerOptions> configure = null)
+    {
+        Services.TryAddScoped<IQueryStreamService, QueryStreamService>();
+        AddExtension<ExecutionScopeProvider>();
+        Services.AddHttpContextAccessor();
 
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
-                options.GetSchema = _ => schemaFactory(dep, dep1, dep2));
-
-            return this;
-        }
-
-        public ServerBuilder ConfigureRules(Func<CombineRule[], CombineRule[]> configureRules)
-        {
-            if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure(options => options.ValidationRules = configureRules(options.ValidationRules));
-            return this;
-        }
-
-        public ServerBuilder ConfigureRules<TDep>(Func<CombineRule[], TDep, CombineRule[]> configureRules) where TDep : class
-        {
-            if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep>((options, dep) =>
-                options.ValidationRules = configureRules(options.ValidationRules, dep));
-            return this;
-        }
-
-        public ServerBuilder ConfigureRules<TDep, TDep1>(Func<CombineRule[], TDep, TDep1, CombineRule[]> configureRules)
-            where TDep : class where TDep1 : class
-        {
-            if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep, TDep1>((options, dep, dep1) =>
-                options.ValidationRules = configureRules(options.ValidationRules, dep, dep1));
-            return this;
-        }
-
-        public ServerBuilder ConfigureRules<TDep, TDep1, TDep2>(
-            Func<CombineRule[], TDep, TDep1, TDep2, CombineRule[]> configureRules)
-            where TDep : class where TDep1 : class where TDep2 : class
-        {
-            if (configureRules == null) throw new ArgumentNullException(nameof(configureRules));
-
-            var builder = Services.AddOptions<ServerOptions>();
-            builder.Configure<TDep, TDep1, TDep2>((options, dep, dep1, dep2) =>
-                options.ValidationRules = configureRules(options.ValidationRules, dep, dep1, dep2));
-            return this;
-        }
-
-        private OptionsBuilder<ServerOptions> Initialize(Action<ServerOptions> configure = null)
-        {
-            Services.TryAddScoped<IQueryStreamService, QueryStreamService>();
-            AddExtension<ExecutionScopeProvider>();
-            Services.AddHttpContextAccessor();
-
-            return Services.AddOptions<ServerOptions>()
-                .ValidateDataAnnotations();
-        }
+        return Services.AddOptions<ServerOptions>()
+            .ValidateDataAnnotations();
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ServerHub.cs b/src/graphql.server/ServerHub.cs
index 30ce28b38..65ce85f3f 100644
--- a/src/graphql.server/ServerHub.cs
+++ b/src/graphql.server/ServerHub.cs
@@ -5,35 +5,34 @@
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ServerHub : Hub
 {
-    public class ServerHub : Hub
-    {
-        private readonly IQueryStreamService _queryStreamService;
+    private readonly IQueryStreamService _queryStreamService;
 
-        public ServerHub(IQueryStreamService queryStreamService)
-        {
-            _queryStreamService = queryStreamService;
-        }
+    public ServerHub(IQueryStreamService queryStreamService)
+    {
+        _queryStreamService = queryStreamService;
+    }
 
-        [HubMethodName("query")]
-        public ChannelReader<ExecutionResult> QueryAsync(
-            QueryRequest query,
-            CancellationToken cancellationToken)
+    [HubMethodName("query")]
+    public ChannelReader<ExecutionResult> QueryAsync(
+        QueryRequest query,
+        CancellationToken cancellationToken)
+    {
+        var channel = Channel.CreateUnbounded<ExecutionResult>();
+        var _ = Task.Run(async () =>
         {
-            var channel = Channel.CreateUnbounded<ExecutionResult>();
-            var _ = Task.Run(async ()=>
+            var result = await _queryStreamService.QueryAsync(new Query
             {
-                var result = await _queryStreamService.QueryAsync(new Query()
-                {
-                    Document = query.Query,
-                    OperationName = query.OperationName,
-                    Extensions = query.Extensions,
-                    Variables = query.Variables
-                }, cancellationToken);
-                var __ = result.Reader.WriteTo(channel.Writer);
-            }, CancellationToken.None);
-            return channel.Reader;
-        }
+                Document = query.Query,
+                OperationName = query.OperationName,
+                Extensions = query.Extensions,
+                Variables = query.Variables
+            }, cancellationToken);
+            var __ = result.Reader.WriteTo(channel.Writer);
+        }, CancellationToken.None);
+        return channel.Reader;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/ServerOptions.cs b/src/graphql.server/ServerOptions.cs
index bcf6d5e0e..ac0ee2b4d 100644
--- a/src/graphql.server/ServerOptions.cs
+++ b/src/graphql.server/ServerOptions.cs
@@ -5,13 +5,13 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public class ServerOptions
 {
-    public class ServerOptions
-    {
-        [Required(ErrorMessage = "GetSchema is required. Use 'AddTankaGraphQL().ConfigureSchema(..)' or one of its overloads")]
-        public Func<Query, ValueTask<ISchema>> GetSchema { get; set; }
+    [Required(ErrorMessage =
+        "GetSchema is required. Use 'AddTankaGraphQL().ConfigureSchema(..)' or one of its overloads")]
+    public Func<Query, ValueTask<ISchema>> GetSchema { get; set; }
 
-        public CombineRule[] ValidationRules { get; set; } = ExecutionRules.All.ToArray();
-    }
+    public CombineRule[] ValidationRules { get; set; } = ExecutionRules.All.ToArray();
 }
\ No newline at end of file
diff --git a/src/graphql.server/ServiceCollectionExtensions.cs b/src/graphql.server/ServiceCollectionExtensions.cs
index 530636635..2544d7aa9 100644
--- a/src/graphql.server/ServiceCollectionExtensions.cs
+++ b/src/graphql.server/ServiceCollectionExtensions.cs
@@ -1,14 +1,13 @@
 using System;
 using Microsoft.Extensions.DependencyInjection;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public static class ServiceCollectionExtensions
 {
-    public static class ServiceCollectionExtensions
+    public static ServerBuilder AddTankaGraphQL(
+        this IServiceCollection services, Action<ServerOptions> configure = null)
     {
-        public static ServerBuilder AddTankaGraphQL(
-            this IServiceCollection services, Action<ServerOptions> configure = null)
-        {
-            return new ServerBuilder(services, configure);
-        }
+        return new ServerBuilder(services, configure);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/SignalRBuilderExtensions.cs b/src/graphql.server/SignalRBuilderExtensions.cs
index 772e456ba..5324e036f 100644
--- a/src/graphql.server/SignalRBuilderExtensions.cs
+++ b/src/graphql.server/SignalRBuilderExtensions.cs
@@ -3,21 +3,20 @@
 using Microsoft.Extensions.DependencyInjection;
 using Tanka.GraphQL.Server.Links.DTOs;
 
-namespace Tanka.GraphQL.Server
+namespace Tanka.GraphQL.Server;
+
+public static class SignalRBuilderExtensions
 {
-    public static class SignalRBuilderExtensions
+    public static ISignalRBuilder AddTankaGraphQL(this ISignalRBuilder builder)
     {
-        public static ISignalRBuilder AddTankaGraphQL(this ISignalRBuilder builder)
+        builder.AddJsonProtocol(options =>
         {
-            builder.AddJsonProtocol(options =>
-            {
-                if (!options.PayloadSerializerOptions.Converters.Any(converter =>
+            if (!options.PayloadSerializerOptions.Converters.Any(converter =>
                     converter is ObjectDictionaryConverter))
-                    options.PayloadSerializerOptions.Converters
-                        .Add(new ObjectDictionaryConverter());
-            });
+                options.PayloadSerializerOptions.Converters
+                    .Add(new ObjectDictionaryConverter());
+        });
 
-            return builder;
-        }
+        return builder;
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/Utils/CancellationTokenExtensions.cs b/src/graphql.server/Utils/CancellationTokenExtensions.cs
index 9d4ba0384..133e4486a 100644
--- a/src/graphql.server/Utils/CancellationTokenExtensions.cs
+++ b/src/graphql.server/Utils/CancellationTokenExtensions.cs
@@ -2,31 +2,28 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Server.Utils
+namespace Tanka.GraphQL.Server.Utils;
+
+internal static class CancellationTokenExtensions
 {
-    internal static class CancellationTokenExtensions
+    /// <summary>
+    ///     Allows awaiting cancellationToken.
+    ///     todo: task might not complete ever in some situations?
+    ///     See: https://github.com/dotnet/corefx/issues/2704#issuecomment-388776983
+    /// </summary>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    public static async Task WhenCancelled(this CancellationToken cancellationToken)
     {
-        /// <summary>
-        ///     Allows awaiting cancellationToken.
-        ///     todo: task might not complete ever in some situations?
-        ///     See: https://github.com/dotnet/corefx/issues/2704#issuecomment-388776983
-        /// </summary>
-        /// <param name="cancellationToken"></param>
-        /// <returns></returns>
-        public static async Task WhenCancelled(this CancellationToken cancellationToken)
-        {
-            if (!cancellationToken.CanBeCanceled)
-            {
-                throw new InvalidOperationException(
-                    "WhenCancelled cannot be used on cancellationToken which can't be cancelled");
-            }
+        if (!cancellationToken.CanBeCanceled)
+            throw new InvalidOperationException(
+                "WhenCancelled cannot be used on cancellationToken which can't be cancelled");
 
-            var taskCompletionSource = new TaskCompletionSource<bool>();
+        var taskCompletionSource = new TaskCompletionSource<bool>();
 
-            using (cancellationToken.Register(() => { taskCompletionSource.TrySetResult(true); }))
-            {
-                await taskCompletionSource.Task;
-            }
+        using (cancellationToken.Register(() => { taskCompletionSource.TrySetResult(true); }))
+        {
+            await taskCompletionSource.Task;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/DTOs/MessageType.cs b/src/graphql.server/WebSockets/DTOs/MessageType.cs
index 41dfb68c0..0f291dec3 100644
--- a/src/graphql.server/WebSockets/DTOs/MessageType.cs
+++ b/src/graphql.server/WebSockets/DTOs/MessageType.cs
@@ -1,93 +1,92 @@
 using System.Diagnostics.CodeAnalysis;
 
-namespace Tanka.GraphQL.Server.WebSockets.DTOs
+namespace Tanka.GraphQL.Server.WebSockets.DTOs;
+
+/// <summary>
+///     Protocol message types defined in
+///     https://github.com/apollographql/subscriptions-transport-ws/blob/master/PROTOCOL.md
+/// </summary>
+[SuppressMessage("ReSharper", "InconsistentNaming")]
+public class MessageType
 {
     /// <summary>
-    ///     Protocol message types defined in
-    ///     https://github.com/apollographql/subscriptions-transport-ws/blob/master/PROTOCOL.md
+    ///     Client sends this message after plain websocket connection to start the communication with the server
+    ///     The server will response only with GQL_CONNECTION_ACK + GQL_CONNECTION_KEEP_ALIVE(if used) or GQL_CONNECTION_ERROR
+    ///     to this message.
+    ///     payload: Object : optional parameters that the client specifies in connectionParams
     /// </summary>
-    [SuppressMessage("ReSharper", "InconsistentNaming")]
-    public class MessageType
-    {
-        /// <summary>
-        ///     Client sends this message after plain websocket connection to start the communication with the server
-        ///     The server will response only with GQL_CONNECTION_ACK + GQL_CONNECTION_KEEP_ALIVE(if used) or GQL_CONNECTION_ERROR
-        ///     to this message.
-        ///     payload: Object : optional parameters that the client specifies in connectionParams
-        /// </summary>
-        public const string GQL_CONNECTION_INIT = "connection_init";
+    public const string GQL_CONNECTION_INIT = "connection_init";
 
-        /// <summary>
-        ///     The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server accepted
-        ///     the connection.
-        /// </summary>
-        public const string GQL_CONNECTION_ACK = "connection_ack"; // Server -> Client
+    /// <summary>
+    ///     The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server accepted
+    ///     the connection.
+    /// </summary>
+    public const string GQL_CONNECTION_ACK = "connection_ack"; // Server -> Client
 
-        /// <summary>
-        ///     The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server rejected
-        ///     the connection.
-        ///     It server also respond with this message in case of a parsing errors of the message (which does not disconnect the
-        ///     client, just ignore the message).
-        ///     payload: Object: the server side error
-        /// </summary>
-        public const string GQL_CONNECTION_ERROR = "connection_error"; // Server -> Client
+    /// <summary>
+    ///     The server may responses with this message to the GQL_CONNECTION_INIT from client, indicates the server rejected
+    ///     the connection.
+    ///     It server also respond with this message in case of a parsing errors of the message (which does not disconnect the
+    ///     client, just ignore the message).
+    ///     payload: Object: the server side error
+    /// </summary>
+    public const string GQL_CONNECTION_ERROR = "connection_error"; // Server -> Client
 
-        /// <summary>
-        ///     Server message that should be sent right after each GQL_CONNECTION_ACK processed and then periodically to keep the
-        ///     client connection alive.
-        ///     The client starts to consider the keep alive message only upon the first received keep alive message from the
-        ///     server.
-        ///     <remarks>
-        ///         NOTE: This one here don't follow the standard due to connection optimization
-        ///     </remarks>
-        /// </summary>
-        public const string GQL_CONNECTION_KEEP_ALIVE = "ka"; // Server -> Client
+    /// <summary>
+    ///     Server message that should be sent right after each GQL_CONNECTION_ACK processed and then periodically to keep the
+    ///     client connection alive.
+    ///     The client starts to consider the keep alive message only upon the first received keep alive message from the
+    ///     server.
+    ///     <remarks>
+    ///         NOTE: This one here don't follow the standard due to connection optimization
+    ///     </remarks>
+    /// </summary>
+    public const string GQL_CONNECTION_KEEP_ALIVE = "ka"; // Server -> Client
 
-        /// <summary>
-        ///     Client sends this message to terminate the connection.
-        /// </summary>
-        public const string GQL_CONNECTION_TERMINATE = "connection_terminate"; // Client -> Server
+    /// <summary>
+    ///     Client sends this message to terminate the connection.
+    /// </summary>
+    public const string GQL_CONNECTION_TERMINATE = "connection_terminate"; // Client -> Server
 
-        /// <summary>
-        ///     Client sends this message to execute GraphQL operation
-        ///     id: string : The id of the GraphQL operation to start
-        ///     payload: Object:
-        ///     query: string : GraphQL operation as string or parsed GraphQL document node
-        ///     variables?: Object : Object with GraphQL variables
-        ///     operationName?: string : GraphQL operation name
-        /// </summary>
-        public const string GQL_START = "start";
+    /// <summary>
+    ///     Client sends this message to execute GraphQL operation
+    ///     id: string : The id of the GraphQL operation to start
+    ///     payload: Object:
+    ///     query: string : GraphQL operation as string or parsed GraphQL document node
+    ///     variables?: Object : Object with GraphQL variables
+    ///     operationName?: string : GraphQL operation name
+    /// </summary>
+    public const string GQL_START = "start";
 
-        /// <summary>
-        ///     The server sends this message to transfer the GraphQL execution result from the server to the client, this message
-        ///     is a response for GQL_START message.
-        ///     For each GraphQL operation send with GQL_START, the server will respond with at least one GQL_DATA message.
-        ///     id: string : ID of the operation that was successfully set up
-        ///     payload: Object :
-        ///     data: any: Execution result
-        ///     errors?: Error[] : Array of resolvers errors
-        /// </summary>
-        public const string GQL_DATA = "data"; // Server -> Client
+    /// <summary>
+    ///     The server sends this message to transfer the GraphQL execution result from the server to the client, this message
+    ///     is a response for GQL_START message.
+    ///     For each GraphQL operation send with GQL_START, the server will respond with at least one GQL_DATA message.
+    ///     id: string : ID of the operation that was successfully set up
+    ///     payload: Object :
+    ///     data: any: Execution result
+    ///     errors?: Error[] : Array of resolvers errors
+    /// </summary>
+    public const string GQL_DATA = "data"; // Server -> Client
 
-        /// <summary>
-        ///     Server sends this message upon a failing operation, before the GraphQL execution, usually due to GraphQL validation
-        ///     errors (resolver errors are part of GQL_DATA message, and will be added as errors array)
-        ///     payload: Error : payload with the error attributed to the operation failing on the server
-        ///     id: string : operation ID of the operation that failed on the server
-        /// </summary>
-        public const string GQL_ERROR = "error"; // Server -> Client
+    /// <summary>
+    ///     Server sends this message upon a failing operation, before the GraphQL execution, usually due to GraphQL validation
+    ///     errors (resolver errors are part of GQL_DATA message, and will be added as errors array)
+    ///     payload: Error : payload with the error attributed to the operation failing on the server
+    ///     id: string : operation ID of the operation that failed on the server
+    /// </summary>
+    public const string GQL_ERROR = "error"; // Server -> Client
 
-        /// <summary>
-        ///     Server sends this message to indicate that a GraphQL operation is done, and no more data will arrive for the
-        ///     specific operation.
-        ///     id: string : operation ID of the operation that completed
-        /// </summary>
-        public const string GQL_COMPLETE = "complete"; // Server -> Client
+    /// <summary>
+    ///     Server sends this message to indicate that a GraphQL operation is done, and no more data will arrive for the
+    ///     specific operation.
+    ///     id: string : operation ID of the operation that completed
+    /// </summary>
+    public const string GQL_COMPLETE = "complete"; // Server -> Client
 
-        /// <summary>
-        ///     Client sends this message in order to stop a running GraphQL operation execution (for example: unsubscribe)
-        ///     id: string : operation id
-        /// </summary>
-        public const string GQL_STOP = "stop"; // Client -> Server
-    }
+    /// <summary>
+    ///     Client sends this message in order to stop a running GraphQL operation execution (for example: unsubscribe)
+    ///     id: string : operation id
+    /// </summary>
+    public const string GQL_STOP = "stop"; // Client -> Server
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/DTOs/OperationMessage.cs b/src/graphql.server/WebSockets/DTOs/OperationMessage.cs
index 8ca9b0d8d..a5e2993f3 100644
--- a/src/graphql.server/WebSockets/DTOs/OperationMessage.cs
+++ b/src/graphql.server/WebSockets/DTOs/OperationMessage.cs
@@ -1,65 +1,64 @@
 using System;
 
-namespace Tanka.GraphQL.Server.WebSockets.DTOs
+namespace Tanka.GraphQL.Server.WebSockets.DTOs;
+
+public class OperationMessage : IEquatable<OperationMessage>
 {
-    public class OperationMessage : IEquatable<OperationMessage>
-    {
-        /// <summary>
-        ///     Nullable Id
-        /// </summary>
-        public string Id { get; set; }
+    /// <summary>
+    ///     Nullable Id
+    /// </summary>
+    public string Id { get; set; }
 
-        /// <summary>
-        ///     Type <see cref="MessageType" />
-        /// </summary>
-        public string Type { get; set; }
+    /// <summary>
+    ///     Nullable payload
+    /// </summary>
+    public object Payload { get; set; }
 
-        /// <summary>
-        ///     Nullable payload
-        /// </summary>
-        public object Payload { get; set; }
+    /// <summary>
+    ///     Type <see cref="MessageType" />
+    /// </summary>
+    public string Type { get; set; }
 
-        public bool Equals(OperationMessage other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return string.Equals(Id, other.Id) && string.Equals(Type, other.Type) && Equals(Payload, other.Payload);
-        }
+    public bool Equals(OperationMessage other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return string.Equals(Id, other.Id) && string.Equals(Type, other.Type) && Equals(Payload, other.Payload);
+    }
 
 
-        /// <inheritdoc />
-        public override string ToString()
-        {
-            return $"Type: {Type} Id: {Id} Payload: {Payload}";
-        }
+    /// <inheritdoc />
+    public override string ToString()
+    {
+        return $"Type: {Type} Id: {Id} Payload: {Payload}";
+    }
 
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
-            return Equals((OperationMessage) obj);
-        }
+    public override bool Equals(object obj)
+    {
+        if (ReferenceEquals(null, obj)) return false;
+        if (ReferenceEquals(this, obj)) return true;
+        if (obj.GetType() != GetType()) return false;
+        return Equals((OperationMessage)obj);
+    }
 
-        public override int GetHashCode()
+    public override int GetHashCode()
+    {
+        unchecked
         {
-            unchecked
-            {
-                var hashCode = Id != null ? Id.GetHashCode() : 0;
-                hashCode = (hashCode * 397) ^ (Type != null ? Type.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ (Payload != null ? Payload.GetHashCode() : 0);
-                return hashCode;
-            }
+            var hashCode = Id != null ? Id.GetHashCode() : 0;
+            hashCode = (hashCode * 397) ^ (Type != null ? Type.GetHashCode() : 0);
+            hashCode = (hashCode * 397) ^ (Payload != null ? Payload.GetHashCode() : 0);
+            return hashCode;
         }
+    }
 
-        public static bool operator ==(OperationMessage left, OperationMessage right)
-        {
-            return Equals(left, right);
-        }
+    public static bool operator ==(OperationMessage left, OperationMessage right)
+    {
+        return Equals(left, right);
+    }
 
-        public static bool operator !=(OperationMessage left, OperationMessage right)
-        {
-            return !Equals(left, right);
-        }
+    public static bool operator !=(OperationMessage left, OperationMessage right)
+    {
+        return !Equals(left, right);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/DTOs/OperationMessageQueryPayload.cs b/src/graphql.server/WebSockets/DTOs/OperationMessageQueryPayload.cs
index 8aed3cf24..ddadee6b9 100644
--- a/src/graphql.server/WebSockets/DTOs/OperationMessageQueryPayload.cs
+++ b/src/graphql.server/WebSockets/DTOs/OperationMessageQueryPayload.cs
@@ -1,62 +1,61 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Server.WebSockets.DTOs
+namespace Tanka.GraphQL.Server.WebSockets.DTOs;
+
+public class OperationMessageQueryPayload : IEquatable<OperationMessageQueryPayload>
 {
-    public class OperationMessageQueryPayload : IEquatable<OperationMessageQueryPayload>
-    {
-        /// <summary>
-        ///     Query, mutation or subscription document
-        /// </summary>
-        public string Query { get; set; }
+    public Dictionary<string, object> Extensions { get; set; }
 
-        /// <summary>
-        ///     Variables
-        /// </summary>
-        public Dictionary<string, object> Variables { get; set; }
+    /// <summary>
+    ///     Operation name
+    /// </summary>
+    public string OperationName { get; set; }
 
-        /// <summary>
-        ///     Operation name
-        /// </summary>
-        public string OperationName { get; set; }
+    /// <summary>
+    ///     Query, mutation or subscription document
+    /// </summary>
+    public string Query { get; set; }
 
-        public Dictionary<string, object> Extensions { get; set; }
+    /// <summary>
+    ///     Variables
+    /// </summary>
+    public Dictionary<string, object> Variables { get; set; }
 
-        public bool Equals(OperationMessageQueryPayload other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return string.Equals(Query, other.Query) && Equals(Variables, other.Variables) &&
-                   string.Equals(OperationName, other.OperationName);
-        }
+    public bool Equals(OperationMessageQueryPayload other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return string.Equals(Query, other.Query) && Equals(Variables, other.Variables) &&
+               string.Equals(OperationName, other.OperationName);
+    }
 
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
-            return Equals((OperationMessageQueryPayload) obj);
-        }
+    public override bool Equals(object obj)
+    {
+        if (ReferenceEquals(null, obj)) return false;
+        if (ReferenceEquals(this, obj)) return true;
+        if (obj.GetType() != GetType()) return false;
+        return Equals((OperationMessageQueryPayload)obj);
+    }
 
-        public override int GetHashCode()
+    public override int GetHashCode()
+    {
+        unchecked
         {
-            unchecked
-            {
-                var hashCode = Query != null ? Query.GetHashCode() : 0;
-                hashCode = (hashCode * 397) ^ (Variables != null ? Variables.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ (OperationName != null ? OperationName.GetHashCode() : 0);
-                return hashCode;
-            }
+            var hashCode = Query != null ? Query.GetHashCode() : 0;
+            hashCode = (hashCode * 397) ^ (Variables != null ? Variables.GetHashCode() : 0);
+            hashCode = (hashCode * 397) ^ (OperationName != null ? OperationName.GetHashCode() : 0);
+            return hashCode;
         }
+    }
 
-        public static bool operator ==(OperationMessageQueryPayload left, OperationMessageQueryPayload right)
-        {
-            return Equals(left, right);
-        }
+    public static bool operator ==(OperationMessageQueryPayload left, OperationMessageQueryPayload right)
+    {
+        return Equals(left, right);
+    }
 
-        public static bool operator !=(OperationMessageQueryPayload left, OperationMessageQueryPayload right)
-        {
-            return !Equals(left, right);
-        }
+    public static bool operator !=(OperationMessageQueryPayload left, OperationMessageQueryPayload right)
+    {
+        return !Equals(left, right);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/DTOs/Serialization/Converters/OperationMessageConverter.cs b/src/graphql.server/WebSockets/DTOs/Serialization/Converters/OperationMessageConverter.cs
index 660c80213..fc1876d73 100644
--- a/src/graphql.server/WebSockets/DTOs/Serialization/Converters/OperationMessageConverter.cs
+++ b/src/graphql.server/WebSockets/DTOs/Serialization/Converters/OperationMessageConverter.cs
@@ -3,136 +3,135 @@
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-namespace Tanka.GraphQL.Server.WebSockets.DTOs.Serialization.Converters
+namespace Tanka.GraphQL.Server.WebSockets.DTOs.Serialization.Converters;
+
+public class OperationMessageConverter : JsonConverter<OperationMessage>
 {
-    public class OperationMessageConverter : JsonConverter<OperationMessage>
+    public override OperationMessage Read(ref Utf8JsonReader reader, Type typeToConvert,
+        JsonSerializerOptions options)
     {
-        public override OperationMessage Read(ref Utf8JsonReader reader, Type typeToConvert,
-            JsonSerializerOptions options)
-        {
-            if (reader.TokenType == JsonTokenType.Null)
-                return null;
-
-            EnsureTokenType(reader.TokenType, JsonTokenType.StartObject);
-
-            // read start of the object
-            reader.Read();
+        if (reader.TokenType == JsonTokenType.Null)
+            return null;
 
-            var type = PeekPayloadType(reader);
+        EnsureTokenType(reader.TokenType, JsonTokenType.StartObject);
 
-            var result = new OperationMessage();
-            while (reader.TokenType == JsonTokenType.PropertyName)
-            {
-                var propertyName = reader.GetString().ToLowerInvariant();
-                reader.Read();
-
-                switch (propertyName)
-                {
-                    case "id":
-                        result.Id = reader.GetString();
-                        reader.Read();
-                        break;
-                    case "type":
-                        result.Type = type;
-                        reader.Read();
-                        break;
-                    case "payload":
-                        result.Payload = ReadPayload(ref reader, type, options);
-                        break;
-                }
-            }
-            
-            EnsureTokenType(reader.TokenType, JsonTokenType.EndObject);
-            reader.Read();
+        // read start of the object
+        reader.Read();
 
-            return result;
-        }
+        var type = PeekPayloadType(reader);
 
-        public override void Write(Utf8JsonWriter writer, OperationMessage value, JsonSerializerOptions options)
+        var result = new OperationMessage();
+        while (reader.TokenType == JsonTokenType.PropertyName)
         {
-            var writeOptions = new JsonSerializerOptions()
-            {
-                PropertyNamingPolicy = JsonNamingPolicy.CamelCase
-            };
-
-            JsonSerializer.Serialize<object>(writer, value, writeOptions);
-        }
+            var propertyName = reader.GetString().ToLowerInvariant();
+            reader.Read();
 
-        private void WritePayload(Utf8JsonWriter writer, string payloadType, object payload, JsonSerializerOptions options)
-        {
-            switch (payloadType)
+            switch (propertyName)
             {
-                case MessageType.GQL_DATA:
-                    writer.WritePropertyName("payload");
-                    JsonSerializer.Serialize<ExecutionResult>(writer, (ExecutionResult)payload, options);
+                case "id":
+                    result.Id = reader.GetString();
+                    reader.Read();
+                    break;
+                case "type":
+                    result.Type = type;
+                    reader.Read();
+                    break;
+                case "payload":
+                    result.Payload = ReadPayload(ref reader, type, options);
                     break;
             }
         }
 
-        private object ReadPayload(ref Utf8JsonReader reader, string payloadType, JsonSerializerOptions options)
+        EnsureTokenType(reader.TokenType, JsonTokenType.EndObject);
+        reader.Read();
+
+        return result;
+    }
+
+    public override void Write(Utf8JsonWriter writer, OperationMessage value, JsonSerializerOptions options)
+    {
+        var writeOptions = new JsonSerializerOptions
         {
-            if (reader.TokenType == JsonTokenType.Null)
-            {
-                reader.Read();
-                return null;
-            }
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
+        };
 
-            return payloadType switch
-            {
-                MessageType.GQL_CONNECTION_INIT => ReadConnectionParams(ref reader, options),
-                MessageType.GQL_START => ReadQuery(ref reader, options),
-                MessageType.GQL_DATA => ReadData(ref reader, options),
-                _ => ReadNull(ref reader, options)
-            };
+        JsonSerializer.Serialize<object>(writer, value, writeOptions);
+    }
+
+    private void WritePayload(Utf8JsonWriter writer, string payloadType, object payload, JsonSerializerOptions options)
+    {
+        switch (payloadType)
+        {
+            case MessageType.GQL_DATA:
+                writer.WritePropertyName("payload");
+                JsonSerializer.Serialize(writer, (ExecutionResult)payload, options);
+                break;
         }
+    }
 
-        private object ReadNull(ref Utf8JsonReader reader, JsonSerializerOptions options)
+    private object ReadPayload(ref Utf8JsonReader reader, string payloadType, JsonSerializerOptions options)
+    {
+        if (reader.TokenType == JsonTokenType.Null)
         {
-            EnsureTokenType(reader.TokenType, JsonTokenType.Null);
             reader.Read();
             return null;
         }
 
-        private object ReadConnectionParams(ref Utf8JsonReader reader, JsonSerializerOptions options)
+        return payloadType switch
         {
-            return JsonSerializer.Deserialize<Dictionary<string, object>>(ref reader, options);
-        }
+            MessageType.GQL_CONNECTION_INIT => ReadConnectionParams(ref reader, options),
+            MessageType.GQL_START => ReadQuery(ref reader, options),
+            MessageType.GQL_DATA => ReadData(ref reader, options),
+            _ => ReadNull(ref reader, options)
+        };
+    }
 
-        private object ReadQuery(ref Utf8JsonReader reader, JsonSerializerOptions options)
-        {
-            return JsonSerializer.Deserialize<OperationMessageQueryPayload>(ref reader, options);
-        }
+    private object ReadNull(ref Utf8JsonReader reader, JsonSerializerOptions options)
+    {
+        EnsureTokenType(reader.TokenType, JsonTokenType.Null);
+        reader.Read();
+        return null;
+    }
 
-        private object ReadData(ref Utf8JsonReader reader, JsonSerializerOptions options)
-        {
-            return JsonSerializer.Deserialize<ExecutionResult>(ref reader, options);
-        }
+    private object ReadConnectionParams(ref Utf8JsonReader reader, JsonSerializerOptions options)
+    {
+        return JsonSerializer.Deserialize<Dictionary<string, object>>(ref reader, options);
+    }
 
-        private string PeekPayloadType(Utf8JsonReader reader)
-        {
-            string type = null;
-            while (reader.TokenType == JsonTokenType.PropertyName)
-            {
-                var propertyName = reader.GetString().ToLowerInvariant();
-                reader.Read(); //skip name
+    private object ReadQuery(ref Utf8JsonReader reader, JsonSerializerOptions options)
+    {
+        return JsonSerializer.Deserialize<OperationMessageQueryPayload>(ref reader, options);
+    }
 
-                if (propertyName == "type")
-                {
-                    type = reader.GetString();
-                    break;
-                }
+    private object ReadData(ref Utf8JsonReader reader, JsonSerializerOptions options)
+    {
+        return JsonSerializer.Deserialize<ExecutionResult>(ref reader, options);
+    }
+
+    private string PeekPayloadType(Utf8JsonReader reader)
+    {
+        string type = null;
+        while (reader.TokenType == JsonTokenType.PropertyName)
+        {
+            var propertyName = reader.GetString().ToLowerInvariant();
+            reader.Read(); //skip name
 
-                reader.Read(); // skip value
+            if (propertyName == "type")
+            {
+                type = reader.GetString();
+                break;
             }
 
-            return type;
+            reader.Read(); // skip value
         }
 
-        private void EnsureTokenType(JsonTokenType actual, JsonTokenType expected)
-        {
-            if (actual != expected)
-                throw new InvalidOperationException(
-                    $"Unexpected token type '{actual}' expected '{expected}'");
-        }
+        return type;
+    }
+
+    private void EnsureTokenType(JsonTokenType actual, JsonTokenType expected)
+    {
+        if (actual != expected)
+            throw new InvalidOperationException(
+                $"Unexpected token type '{actual}' expected '{expected}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/GraphQLWSProtocol.cs b/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
index 00fb67c9e..f3a0dbe34 100644
--- a/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
+++ b/src/graphql.server/WebSockets/GraphQLWSProtocol.cs
@@ -4,244 +4,241 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+[SuppressMessage("ReSharper", "InconsistentNaming")]
+public class GraphQLWSProtocol : IProtocolHandler
 {
-    [SuppressMessage("ReSharper", "InconsistentNaming")]
-    public class GraphQLWSProtocol : IProtocolHandler
+    private readonly ILogger<GraphQLWSProtocol> _logger;
+    private readonly IMessageContextAccessor _messageContextAccessor;
+    private readonly WebSocketServerOptions _options;
+    private readonly ParserOptions _parserOptions;
+    private readonly IQueryStreamService _queryStreamService;
+
+    public GraphQLWSProtocol(
+        IQueryStreamService queryStreamService,
+        IOptions<WebSocketServerOptions> options,
+        IMessageContextAccessor messageContextAccessor,
+        ILogger<GraphQLWSProtocol> logger)
     {
-        private readonly ILogger<GraphQLWSProtocol> _logger;
-        private readonly IMessageContextAccessor _messageContextAccessor;
-        private readonly WebSocketServerOptions _options;
-        private readonly IQueryStreamService _queryStreamService;
-        private readonly ParserOptions _parserOptions;
-
-        public GraphQLWSProtocol(
-            IQueryStreamService queryStreamService,
-            IOptions<WebSocketServerOptions> options,
-            IMessageContextAccessor messageContextAccessor,
-            ILogger<GraphQLWSProtocol> logger)
+        _queryStreamService = queryStreamService;
+        _messageContextAccessor = messageContextAccessor;
+        _logger = logger;
+        _options = options.Value;
+        _parserOptions = new ParserOptions
         {
-            _queryStreamService = queryStreamService;
-            _messageContextAccessor = messageContextAccessor;
-            _logger = logger;
-            _options = options.Value;
-            _parserOptions = new ParserOptions()
-            {
-                ImportProviders = null
-            }; //todo: inject
-        }
+            ImportProviders = null
+        }; //todo: inject
+    }
 
-        protected ConcurrentDictionary<string, Subscription> Subscriptions { get; } =
-            new ConcurrentDictionary<string, Subscription>();
+    protected ConcurrentDictionary<string, Subscription> Subscriptions { get; } = new();
 
-        public ValueTask Handle(MessageContext context)
+    public ValueTask Handle(MessageContext context)
+    {
+        _logger.LogInformation("Handling message: {id}:{type}",
+            context.Message.Id,
+            context.Message.Type);
+
+        _messageContextAccessor.Context = context;
+        return context.Message.Type switch
         {
-            _logger.LogInformation("Handling message: {id}:{type}",
-                context.Message.Id,
-                context.Message.Type);
+            MessageType.GQL_CONNECTION_INIT => HandleInitAsync(context),
+            MessageType.GQL_START => HandleStartAsync(context),
+            MessageType.GQL_STOP => HandleStopAsync(context),
+            MessageType.GQL_CONNECTION_TERMINATE => HandleTerminateAsync(context),
+            _ => HandleUnknownAsync(context)
+        };
+    }
 
-            _messageContextAccessor.Context = context;
-            return context.Message.Type switch
-            {
-                MessageType.GQL_CONNECTION_INIT => HandleInitAsync(context),
-                MessageType.GQL_START => HandleStartAsync(context),
-                MessageType.GQL_STOP => HandleStopAsync(context),
-                MessageType.GQL_CONNECTION_TERMINATE => HandleTerminateAsync(context),
-                _ => HandleUnknownAsync(context),
-            };
-        }
+    public Subscription GetSubscription(string id)
+    {
+        if (Subscriptions.TryGetValue(id, out var sub))
+            return sub;
 
-        public Subscription GetSubscription(string id)
-        {
-            if (Subscriptions.TryGetValue(id, out var sub))
-                return sub;
+        return default;
+    }
 
-            return default;
-        }
+    private ValueTask HandleUnknownAsync(MessageContext context)
+    {
+        _logger.LogError("Unknown message received of type: {type}",
+            context.Message.Type);
 
-        private ValueTask HandleUnknownAsync(MessageContext context)
+        var message = context.Message;
+        return context.Output.WriteAsync(new OperationMessage
         {
-            _logger.LogError("Unknown message received of type: {type}",
-                context.Message.Type);
+            Type = MessageType.GQL_CONNECTION_ERROR,
+            Id = message.Id
+        });
+    }
 
-            var message = context.Message;
-            return context.Output.WriteAsync(new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_ERROR,
-                Id = message.Id
-            });
-        }
+    private ValueTask HandleTerminateAsync(MessageContext context)
+    {
+        _logger.LogInformation("Terminate message received");
+        context.Output.TryComplete();
+        return default;
+    }
 
-        private ValueTask HandleTerminateAsync(MessageContext context)
-        {
-            _logger.LogInformation("Terminate message received");
-            context.Output.TryComplete();
-            return default;
-        }
+    private async ValueTask HandleStopAsync(MessageContext context)
+    {
+        var id = context.Message.Id;
+        var subscription = GetSubscription(id);
 
-        private async ValueTask HandleStopAsync(MessageContext context)
-        {
-            var id = context.Message.Id;
-            var subscription = GetSubscription(id);
+        if (subscription == null)
+            return;
+
+        // unsubscribe the stream
+        if (!subscription.Unsubscribe.IsCancellationRequested)
+            subscription.Unsubscribe.Cancel();
 
-            if (subscription == null)
-                return;
+        Subscriptions.TryRemove(id, out _);
 
-            // unsubscribe the stream
-            if (!subscription.Unsubscribe.IsCancellationRequested)
-                subscription.Unsubscribe.Cancel();
+        await subscription.QueryStream.Reader.Completion;
+    }
 
-            Subscriptions.TryRemove(id, out _);
+    private async ValueTask HandleStartAsync(MessageContext context)
+    {
+        var id = context.Message.Id;
+        _logger.LogInformation(
+            "Start: {id}",
+            id);
 
-            await subscription.QueryStream.Reader.Completion;
+        if (string.IsNullOrEmpty(id))
+        {
+            await WriteError(context, "Message.Id is required");
+            return;
         }
 
-        private async ValueTask HandleStartAsync(MessageContext context)
+        if (Subscriptions.ContainsKey(id))
         {
-            var id = context.Message.Id;
-            _logger.LogInformation(
-                "Start: {id}",
-                id);
+            await WriteError(context, $"Subscription with '{id}' already exists or is not completed");
+            return;
+        }
 
-            if (string.IsNullOrEmpty(id))
-            {
-                await WriteError(context, "Message.Id is required");
-                return;
-            }
+        var payload = context.Message.Payload as OperationMessageQueryPayload;
 
-            if (Subscriptions.ContainsKey(id))
-            {
-                await WriteError(context, $"Subscription with '{id}' already exists or is not completed");
-                return;
-            }
+        if (payload == null || string.IsNullOrEmpty(payload.Query))
+        {
+            await WriteError(context, $"Message '{id}' does not have required query payload");
+            return;
+        }
 
-            var payload = context.Message.Payload as OperationMessageQueryPayload;
+        using var logScope = _logger.BeginScope("Query: '{operationName}'", payload.OperationName);
 
-            if (payload == null || string.IsNullOrEmpty(payload.Query))
+        ExecutableDocument document = payload.Query;
+        var unsubscribeSource = new CancellationTokenSource();
+        var queryStream = await _queryStreamService.QueryAsync(new Query
+        {
+            OperationName = payload.OperationName,
+            Document = document,
+            Variables = payload.Variables
+        }, unsubscribeSource.Token);
+
+        // transform to output
+        // stream results to output
+        var _ = queryStream.Reader.TransformAndWriteTo(
+            context.Output, result => new OperationMessage
             {
-                await WriteError(context, $"Message '{id}' does not have required query payload");
-                return;
-            }
-
-            using var logScope = _logger.BeginScope("Query: '{operationName}'", payload.OperationName);
+                Id = id,
+                Type = MessageType.GQL_DATA,
+                Payload = result
+            },
+            false);
 
-            ExecutableDocument document = payload.Query;
-            var unsubscribeSource = new CancellationTokenSource();
-            var queryStream = await _queryStreamService.QueryAsync(new Query
-            {
-                OperationName = payload.OperationName,
-                Document = document,
-                Variables = payload.Variables
-            }, unsubscribeSource.Token);
-
-            // transform to output
-            // stream results to output
-            var _ = queryStream.Reader.TransformAndWriteTo(
-                context.Output, result => new OperationMessage
-                {
-                    Id = id,
-                    Type = MessageType.GQL_DATA,
-                    Payload = result
-                },
-                false);
+        // has mutation or query
+        var hasMutationOrQuery = document.OperationDefinitions
+            ?.Any(op => op.Operation != OperationType.Subscription) ?? true;
 
-            // has mutation or query
-            var hasMutationOrQuery = document.OperationDefinitions
-                ?.Any(op => op.Operation != OperationType.Subscription) ?? true;
+        if (hasMutationOrQuery)
+        {
+            // no need to setup subscription as query or mutation will finish 
+            // after execution
+            await ExecuteQueryOrMutationStream(context, queryStream);
+            return;
+        }
 
-            if (hasMutationOrQuery)
-            {
-                // no need to setup subscription as query or mutation will finish 
-                // after execution
-                await ExecuteQueryOrMutationStream(context, queryStream);
-                return;
-            }
+        // execute subscription
+        await ExecuteSubscriptionStream(context, queryStream, unsubscribeSource);
+    }
 
-            // execute subscription
-            await ExecuteSubscriptionStream(context, queryStream, unsubscribeSource);
+    private async ValueTask ExecuteSubscriptionStream(
+        MessageContext context,
+        QueryStream queryStream,
+        CancellationTokenSource unsubscribeSource)
+    {
+        _logger.LogInformation("Executing subscription stream");
+        var id = context.Message.Id;
+        // There might have been another start with the id between this and the contains
+        // check in the beginning. todo(pekka): refactor
+        var sub = new Subscription(id, queryStream, context.Output, unsubscribeSource);
+        if (!Subscriptions.TryAdd(id, sub))
+        {
+            sub.Unsubscribe.Cancel();
+            await WriteError(context, $"Subscription with id '{id}' already exists");
+            return;
         }
 
-        private async ValueTask ExecuteSubscriptionStream(
-            MessageContext context,
-            QueryStream queryStream,
-            CancellationTokenSource unsubscribeSource)
+        var _ = Task.Run(async () =>
         {
-            _logger.LogInformation("Executing subscription stream");
-            var id = context.Message.Id;
-            // There might have been another start with the id between this and the contains
-            // check in the beginning. todo(pekka): refactor
-            var sub = new Subscription(id, queryStream, context.Output, unsubscribeSource);
-            if (!Subscriptions.TryAdd(id, sub))
-            {
-                sub.Unsubscribe.Cancel();
-                await WriteError(context, $"Subscription with id '{id}' already exists");
-                return;
-            }
-
-            var _ = Task.Run(async () =>
+            await queryStream.Reader.Completion;
+            _logger.LogInformation("Stop: '{id}'", id);
+            Subscriptions.TryRemove(id, out sub);
+            await context.Output.WriteAsync(new OperationMessage
             {
-                await queryStream.Reader.Completion;
-                _logger.LogInformation("Stop: '{id}'", id);
-                Subscriptions.TryRemove(id, out sub);
-                await context.Output.WriteAsync(new OperationMessage
-                {
-                    Type = MessageType.GQL_COMPLETE,
-                    Id = id
-                }, CancellationToken.None);
-                _logger.LogInformation("Query '{id}' completed", id);
-            });
-        }
+                Type = MessageType.GQL_COMPLETE,
+                Id = id
+            }, CancellationToken.None);
+            _logger.LogInformation("Query '{id}' completed", id);
+        });
+    }
 
-        private ValueTask ExecuteQueryOrMutationStream(MessageContext context, QueryStream queryStream)
+    private ValueTask ExecuteQueryOrMutationStream(MessageContext context, QueryStream queryStream)
+    {
+        _logger.LogInformation("Executing query or mutation stream");
+        var id = context.Message.Id;
+        var __ = queryStream.Reader.Completion.ContinueWith(async result =>
         {
-            _logger.LogInformation("Executing query or mutation stream");
-            var id = context.Message.Id;
-            var __ = queryStream.Reader.Completion.ContinueWith(async result =>
+            _logger.LogInformation("Stop: '{id}'", id);
+            await context.Output.WriteAsync(new OperationMessage
             {
-                _logger.LogInformation("Stop: '{id}'", id);
-                await context.Output.WriteAsync(new OperationMessage
-                {
-                    Type = MessageType.GQL_COMPLETE,
-                    Id = id
-                }, CancellationToken.None);
-                _logger.LogInformation("Query '{id}' completed", id);
-            }, TaskContinuationOptions.LongRunning);
+                Type = MessageType.GQL_COMPLETE,
+                Id = id
+            }, CancellationToken.None);
+            _logger.LogInformation("Query '{id}' completed", id);
+        }, TaskContinuationOptions.LongRunning);
 
-            return default;
-        }
+        return default;
+    }
 
-        private async Task WriteError(MessageContext context, string errorMessage)
+    private async Task WriteError(MessageContext context, string errorMessage)
+    {
+        _logger.LogError("{message}", errorMessage);
+        await context.Output.WriteAsync(new OperationMessage
         {
-            _logger.LogError("{message}", errorMessage);
-            await context.Output.WriteAsync(new OperationMessage
+            Type = MessageType.GQL_CONNECTION_ERROR,
+            Id = context.Message.Id,
+            Payload = new ExecutionResult
             {
-                Type = MessageType.GQL_CONNECTION_ERROR,
-                Id = context.Message.Id,
-                Payload = new ExecutionResult()
+                Errors = new List<ExecutionError>
                 {
-                    Errors = new List<ExecutionError>()
+                    new()
                     {
-                        new ExecutionError()
-                        {
-                            Message = errorMessage
-                        }
+                        Message = errorMessage
                     }
                 }
-            }, CancellationToken.None);
-        }
+            }
+        }, CancellationToken.None);
+    }
 
-        private async ValueTask HandleInitAsync(MessageContext context)
-        {
-            _logger.LogInformation("Init");
+    private async ValueTask HandleInitAsync(MessageContext context)
+    {
+        _logger.LogInformation("Init");
 
-            await _options.AcceptAsync(context);
-        }
+        await _options.AcceptAsync(context);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/IMessageContextAccessor.cs b/src/graphql.server/WebSockets/IMessageContextAccessor.cs
index 3a592afae..99b42b54c 100644
--- a/src/graphql.server/WebSockets/IMessageContextAccessor.cs
+++ b/src/graphql.server/WebSockets/IMessageContextAccessor.cs
@@ -1,12 +1,11 @@
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public interface IMessageContextAccessor
 {
-    public interface IMessageContextAccessor
-    {
-        MessageContext Context { get; set; }
-    }
+    MessageContext Context { get; set; }
+}
 
-    public class MessageContextAccessor : IMessageContextAccessor
-    {
-        public MessageContext Context { get; set; }
-    }
+public class MessageContextAccessor : IMessageContextAccessor
+{
+    public MessageContext Context { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/IProtocolHandler.cs b/src/graphql.server/WebSockets/IProtocolHandler.cs
index bc254b270..2dbc9eb77 100644
--- a/src/graphql.server/WebSockets/IProtocolHandler.cs
+++ b/src/graphql.server/WebSockets/IProtocolHandler.cs
@@ -1,9 +1,8 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public interface IProtocolHandler
 {
-    public interface IProtocolHandler
-    {
-        ValueTask Handle(MessageContext context);
-    }
+    ValueTask Handle(MessageContext context);
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/MessageContext.cs b/src/graphql.server/WebSockets/MessageContext.cs
index ccb4a8a5c..c460e6329 100644
--- a/src/graphql.server/WebSockets/MessageContext.cs
+++ b/src/graphql.server/WebSockets/MessageContext.cs
@@ -1,18 +1,17 @@
 using System.Threading.Channels;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class MessageContext
 {
-    public class MessageContext
+    public MessageContext(OperationMessage message, ChannelWriter<OperationMessage> output)
     {
-        public MessageContext(OperationMessage message, ChannelWriter<OperationMessage> output)
-        {
-            Message = message;
-            Output = output;
-        }
+        Message = message;
+        Output = output;
+    }
 
-        public OperationMessage Message { get; }
+    public OperationMessage Message { get; }
 
-        public ChannelWriter<OperationMessage> Output { get; }
-    }
+    public ChannelWriter<OperationMessage> Output { get; }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/MessageServer.cs b/src/graphql.server/WebSockets/MessageServer.cs
index 162c1970b..49459dd61 100644
--- a/src/graphql.server/WebSockets/MessageServer.cs
+++ b/src/graphql.server/WebSockets/MessageServer.cs
@@ -9,197 +9,195 @@
 using Microsoft.Extensions.Options;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class MessageServer
 {
-    public class MessageServer
-    {
-        private readonly Channel<OperationMessage> _readChannel;
-        private readonly Channel<OperationMessage> _writeChannel;
+    private static readonly byte[] _separatorBytes = Encoding.UTF8.GetBytes(new[] { '\n' });
+    private readonly JsonSerializerOptions _messageSerializerOptions;
+    private readonly Channel<OperationMessage> _readChannel;
+    private readonly Channel<OperationMessage> _writeChannel;
 
-        public MessageServer(IOptions<WebSocketServerOptions> options)
-        {
-            _readChannel = Channel.CreateUnbounded<OperationMessage>();
-            _writeChannel = Channel.CreateUnbounded<OperationMessage>();
-            _messageSerializerOptions = options.Value.MessageSerializerOptions;
-        }
+    public MessageServer(IOptions<WebSocketServerOptions> options)
+    {
+        _readChannel = Channel.CreateUnbounded<OperationMessage>();
+        _writeChannel = Channel.CreateUnbounded<OperationMessage>();
+        _messageSerializerOptions = options.Value.MessageSerializerOptions;
+    }
 
-        public ChannelReader<OperationMessage> Input => _readChannel.Reader;
+    public Task Completion => Task.WhenAll(
+        _readChannel.Reader.Completion,
+        _writeChannel.Reader.Completion);
 
-        public ChannelWriter<OperationMessage> Output => _writeChannel.Writer;
+    public ChannelReader<OperationMessage> Input => _readChannel.Reader;
 
-        public Task Completion => Task.WhenAll(
-            _readChannel.Reader.Completion,
-            _writeChannel.Reader.Completion);
+    public ChannelWriter<OperationMessage> Output => _writeChannel.Writer;
 
-        public void Complete(Exception ex = null)
-        {
-            _writeChannel.Writer.TryComplete(ex);
-            _readChannel.Writer.TryComplete(ex);
-        }
+    public void Complete(Exception ex = null)
+    {
+        _writeChannel.Writer.TryComplete(ex);
+        _readChannel.Writer.TryComplete(ex);
+    }
 
-        public virtual async Task RunAsync(IDuplexPipe connection, CancellationToken token)
-        {
-            var toConnection = WriteToConnection(
-                connection.Output,
-                token);
-
-            var fromConnection = ReadFromConnection(
-                connection.Input,
-                token);
-
-            await Task.WhenAll(
-                toConnection,
-                fromConnection,
-                Completion);
-        }
+    public virtual async Task RunAsync(IDuplexPipe connection, CancellationToken token)
+    {
+        var toConnection = WriteToConnection(
+            connection.Output,
+            token);
+
+        var fromConnection = ReadFromConnection(
+            connection.Input,
+            token);
+
+        await Task.WhenAll(
+            toConnection,
+            fromConnection,
+            Completion);
+    }
 
-        private async Task WriteToConnection(
-            PipeWriter output,
-            CancellationToken token)
+    private async Task WriteToConnection(
+        PipeWriter output,
+        CancellationToken token)
+    {
+        try
         {
-            try
+            var reader = _writeChannel.Reader;
+            while (true)
             {
-                var reader = _writeChannel.Reader;
-                while (true)
-                {
-                    if (!await reader.WaitToReadAsync(token))
-                        break;
+                if (!await reader.WaitToReadAsync(token))
+                    break;
 
-                    if (!reader.TryRead(out var message))
-                        continue;
+                if (!reader.TryRead(out var message))
+                    continue;
 
-                    var count = WriteOperationMessage(message, output);
-                    output.Advance(count);
+                var count = WriteOperationMessage(message, output);
+                output.Advance(count);
 
-                    // apply back-pressure etc
-                    var flush = await output.FlushAsync(token);
+                // apply back-pressure etc
+                var flush = await output.FlushAsync(token);
 
-                    if (flush.IsCanceled || flush.IsCompleted)
-                        break;
-                }
-
-                // Manifest any errors in the completion task
-                await reader.Completion;
+                if (flush.IsCanceled || flush.IsCompleted)
+                    break;
             }
-            catch (Exception ex)
-            {
-                if (token.IsCancellationRequested)
-                    return;
 
-                output.Complete(ex);
-                throw;
-            }
-            finally
-            {
-                // This will safely no-op if the catch block above ran.
-                output.Complete();
-            }
+            // Manifest any errors in the completion task
+            await reader.Completion;
         }
+        catch (Exception ex)
+        {
+            if (token.IsCancellationRequested)
+                return;
 
-        private async Task ReadFromConnection(
-            PipeReader reader,
-            CancellationToken token)
+            output.Complete(ex);
+            throw;
+        }
+        finally
         {
-            var writer = _readChannel.Writer;
+            // This will safely no-op if the catch block above ran.
+            output.Complete();
+        }
+    }
+
+    private async Task ReadFromConnection(
+        PipeReader reader,
+        CancellationToken token)
+    {
+        var writer = _readChannel.Writer;
 
-            try
+        try
+        {
+            while (true)
             {
-                while (true)
-                {
-                    var read = await reader.ReadAsync(token);
-                    if (read.IsCanceled)
-                        break;
+                var read = await reader.ReadAsync(token);
+                if (read.IsCanceled)
+                    break;
 
-                    // can we find a complete frame?
-                    var buffer = read.Buffer;
-                    if (TryParseFrame(
+                // can we find a complete frame?
+                var buffer = read.Buffer;
+                if (TryParseFrame(
                         buffer,
                         out var nextMessage,
                         out var consumedTo))
-                    {
-                        reader.AdvanceTo(consumedTo);
-                        await writer.WriteAsync(nextMessage, token);
-                        continue;
-                    }
-
-                    reader.AdvanceTo(buffer.Start, buffer.End);
-
-                    if (read.IsCompleted)
-                        break;
+                {
+                    reader.AdvanceTo(consumedTo);
+                    await writer.WriteAsync(nextMessage, token);
+                    continue;
                 }
-            }
-            catch (Exception e)
-            {
-                if (token.IsCancellationRequested)
-                    return;
 
-                reader.Complete(e);
-                writer.TryComplete(e);
-                throw;
-            }
-            finally
-            {
-                reader.Complete();
-                writer.TryComplete();
+                reader.AdvanceTo(buffer.Start, buffer.End);
+
+                if (read.IsCompleted)
+                    break;
             }
         }
-
-        private bool TryParseFrame(
-            ReadOnlySequence<byte> buffer,
-            out OperationMessage nextMessage,
-            out SequencePosition consumedTo)
+        catch (Exception e)
         {
-            // find the end-of-line marker
-            var eol = buffer.PositionOf((byte) '\n');
-            if (eol == null)
-            {
-                nextMessage = default;
-                consumedTo = default;
-                return false;
-            }
+            if (token.IsCancellationRequested)
+                return;
 
-            // read past the line-ending
-            consumedTo = buffer.GetPosition(1, eol.Value);
-            // consume the data
-            var payload = buffer.Slice(0, eol.Value);
-            nextMessage = ReadOperationMessage(payload);
-            return true;
+            reader.Complete(e);
+            writer.TryComplete(e);
+            throw;
         }
-
-        private static readonly byte[] _separatorBytes = Encoding.UTF8.GetBytes(new[] {'\n'});
-        private readonly JsonSerializerOptions _messageSerializerOptions;
-
-        private  int WriteOperationMessage(OperationMessage message, PipeWriter output)
+        finally
         {
-            var jsonBytes = JsonSerializer.SerializeToUtf8Bytes(message, _messageSerializerOptions);
-            
-            byte[] messageBytes = new byte[jsonBytes.Length + 1];
-            jsonBytes.CopyTo(messageBytes, 0);
-            _separatorBytes.CopyTo(messageBytes, jsonBytes.Length);
-
-            var memory = output.GetMemory(sizeHint: messageBytes.Length);
-            messageBytes.CopyTo(memory);
-            return messageBytes.Length;
+            reader.Complete();
+            writer.TryComplete();
         }
+    }
 
-        private OperationMessage ReadOperationMessage(in ReadOnlySequence<byte> payload)
+    private bool TryParseFrame(
+        ReadOnlySequence<byte> buffer,
+        out OperationMessage nextMessage,
+        out SequencePosition consumedTo)
+    {
+        // find the end-of-line marker
+        var eol = buffer.PositionOf((byte)'\n');
+        if (eol == null)
         {
-            return JsonSerializer.Deserialize<OperationMessage>(payload.ToArray(), _messageSerializerOptions);
+            nextMessage = default;
+            consumedTo = default;
+            return false;
         }
 
-        private static string GetUtf8String(ReadOnlySequence<byte> buffer)
-        {
-            if (buffer.IsSingleSegment) return Encoding.UTF8.GetString(buffer.First.Span);
+        // read past the line-ending
+        consumedTo = buffer.GetPosition(1, eol.Value);
+        // consume the data
+        var payload = buffer.Slice(0, eol.Value);
+        nextMessage = ReadOperationMessage(payload);
+        return true;
+    }
 
-            return string.Create((int) buffer.Length, buffer, (span, sequence) =>
+    private int WriteOperationMessage(OperationMessage message, PipeWriter output)
+    {
+        var jsonBytes = JsonSerializer.SerializeToUtf8Bytes(message, _messageSerializerOptions);
+
+        var messageBytes = new byte[jsonBytes.Length + 1];
+        jsonBytes.CopyTo(messageBytes, 0);
+        _separatorBytes.CopyTo(messageBytes, jsonBytes.Length);
+
+        var memory = output.GetMemory(messageBytes.Length);
+        messageBytes.CopyTo(memory);
+        return messageBytes.Length;
+    }
+
+    private OperationMessage ReadOperationMessage(in ReadOnlySequence<byte> payload)
+    {
+        return JsonSerializer.Deserialize<OperationMessage>(payload.ToArray(), _messageSerializerOptions);
+    }
+
+    private static string GetUtf8String(ReadOnlySequence<byte> buffer)
+    {
+        if (buffer.IsSingleSegment) return Encoding.UTF8.GetString(buffer.First.Span);
+
+        return string.Create((int)buffer.Length, buffer, (span, sequence) =>
+        {
+            foreach (var segment in sequence)
             {
-                foreach (var segment in sequence)
-                {
-                    Encoding.UTF8.GetChars(segment.Span, span);
+                Encoding.UTF8.GetChars(segment.Span, span);
 
-                    span = span.Slice(segment.Length);
-                }
-            });
-        }
+                span = span.Slice(segment.Length);
+            }
+        });
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/Subscription.cs b/src/graphql.server/WebSockets/Subscription.cs
index eaaeb5a34..d8fe6ebdc 100644
--- a/src/graphql.server/WebSockets/Subscription.cs
+++ b/src/graphql.server/WebSockets/Subscription.cs
@@ -2,21 +2,20 @@
 using System.Threading.Channels;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class Subscription
 {
-    public class Subscription
+    public Subscription(string id, QueryStream queryStream, ChannelWriter<OperationMessage> output,
+        CancellationTokenSource cancellationTokenSource)
     {
-        public Subscription(string id, QueryStream queryStream, ChannelWriter<OperationMessage> output,
-            CancellationTokenSource cancellationTokenSource)
-        {
-            ID = id;
-            QueryStream = queryStream;
-            Unsubscribe = cancellationTokenSource;
-        }
+        ID = id;
+        QueryStream = queryStream;
+        Unsubscribe = cancellationTokenSource;
+    }
 
-        public string ID { get; }
-        public QueryStream QueryStream { get; set; }
+    public string ID { get; }
+    public QueryStream QueryStream { get; set; }
 
-        public CancellationTokenSource Unsubscribe { get; set; }
-    }
+    public CancellationTokenSource Unsubscribe { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/SubscriptionServer.cs b/src/graphql.server/WebSockets/SubscriptionServer.cs
index 60bb0268b..55a9a3041 100644
--- a/src/graphql.server/WebSockets/SubscriptionServer.cs
+++ b/src/graphql.server/WebSockets/SubscriptionServer.cs
@@ -3,32 +3,31 @@
 using System.Threading.Tasks;
 using Microsoft.Extensions.Options;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class SubscriptionServer : MessageServer
 {
-    public class SubscriptionServer : MessageServer
-    {
-        private readonly IProtocolHandler _protocol;
+    private readonly IProtocolHandler _protocol;
 
-        public SubscriptionServer(
-            IProtocolHandler protocol, 
-            IOptions<WebSocketServerOptions> options) : base(options)
-        {
-            _protocol = protocol;
-        }
+    public SubscriptionServer(
+        IProtocolHandler protocol,
+        IOptions<WebSocketServerOptions> options) : base(options)
+    {
+        _protocol = protocol;
+    }
 
-        public override Task RunAsync(IDuplexPipe connection, CancellationToken token)
-        {
-            var baseRun = base.RunAsync(connection, token);
-            var receiveOperations = StartReceiveOperations();
+    public override Task RunAsync(IDuplexPipe connection, CancellationToken token)
+    {
+        var baseRun = base.RunAsync(connection, token);
+        var receiveOperations = StartReceiveOperations();
 
-            return Task.WhenAll(receiveOperations, baseRun);
-        }
+        return Task.WhenAll(receiveOperations, baseRun);
+    }
 
-        private async Task StartReceiveOperations()
-        {
-            while (await Input.WaitToReadAsync())
-            while (Input.TryRead(out var operation))
-                await _protocol.Handle(new MessageContext(operation, Output));
-        }
+    private async Task StartReceiveOperations()
+    {
+        while (await Input.WaitToReadAsync())
+        while (Input.TryRead(out var operation))
+            await _protocol.Handle(new MessageContext(operation, Output));
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/WebSocketConnection.Log.cs b/src/graphql.server/WebSockets/WebSocketConnection.Log.cs
index 3c53a8325..4aa0c8b6d 100644
--- a/src/graphql.server/WebSockets/WebSocketConnection.Log.cs
+++ b/src/graphql.server/WebSockets/WebSocketConnection.Log.cs
@@ -2,123 +2,133 @@
 using System.Net.WebSockets;
 using Microsoft.Extensions.Logging;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public partial class WebSocketPipe
 {
-    public partial class WebSocketPipe
+    private static class Log
     {
-        private static class Log
-        {
-            private static readonly Action<ILogger, string, Exception> _socketOpened =
-                LoggerMessage.Define<string>(LogLevel.Debug, new EventId(1, "SocketOpened"), "Socket opened using Sub-Protocol: '{SubProtocol}'.");
+        private static readonly Action<ILogger, string, Exception> _socketOpened =
+            LoggerMessage.Define<string>(LogLevel.Debug, new EventId(1, "SocketOpened"),
+                "Socket opened using Sub-Protocol: '{SubProtocol}'.");
 
-            private static readonly Action<ILogger, Exception> _socketClosed =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(2, "SocketClosed"), "Socket closed.");
+        private static readonly Action<ILogger, Exception> _socketClosed =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(2, "SocketClosed"), "Socket closed.");
 
-            private static readonly Action<ILogger, WebSocketCloseStatus?, string, Exception> _clientClosed =
-                LoggerMessage.Define<WebSocketCloseStatus?, string>(LogLevel.Debug, new EventId(3, "ClientClosed"), "Client closed connection with status code '{Status}' ({Description}). Signaling end-of-input to application.");
+        private static readonly Action<ILogger, WebSocketCloseStatus?, string, Exception> _clientClosed =
+            LoggerMessage.Define<WebSocketCloseStatus?, string>(LogLevel.Debug, new EventId(3, "ClientClosed"),
+                "Client closed connection with status code '{Status}' ({Description}). Signaling end-of-input to application.");
 
-            private static readonly Action<ILogger, Exception> _waitingForSend =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(4, "WaitingForSend"), "Waiting for the application to finish sending data.");
+        private static readonly Action<ILogger, Exception> _waitingForSend =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(4, "WaitingForSend"),
+                "Waiting for the application to finish sending data.");
 
-            private static readonly Action<ILogger, Exception> _failedSending =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(5, "FailedSending"), "Application failed during sending. Sending InternalServerError close frame.");
+        private static readonly Action<ILogger, Exception> _failedSending =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(5, "FailedSending"),
+                "Application failed during sending. Sending InternalServerError close frame.");
 
-            private static readonly Action<ILogger, Exception> _finishedSending =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(6, "FinishedSending"), "Application finished sending. Sending close frame.");
+        private static readonly Action<ILogger, Exception> _finishedSending =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(6, "FinishedSending"),
+                "Application finished sending. Sending close frame.");
 
-            private static readonly Action<ILogger, Exception> _waitingForClose =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(7, "WaitingForClose"), "Waiting for the client to close the socket.");
+        private static readonly Action<ILogger, Exception> _waitingForClose =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(7, "WaitingForClose"),
+                "Waiting for the client to close the socket.");
 
-            private static readonly Action<ILogger, Exception> _closeTimedOut =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(8, "CloseTimedOut"), "Timed out waiting for client to send the close frame, aborting the connection.");
+        private static readonly Action<ILogger, Exception> _closeTimedOut =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(8, "CloseTimedOut"),
+                "Timed out waiting for client to send the close frame, aborting the connection.");
 
-            private static readonly Action<ILogger, WebSocketMessageType, int, bool, Exception> _messageReceived =
-                LoggerMessage.Define<WebSocketMessageType, int, bool>(LogLevel.Trace, new EventId(9, "MessageReceived"), "Message received. Type: {MessageType}, size: {Size}, EndOfMessage: {EndOfMessage}.");
+        private static readonly Action<ILogger, WebSocketMessageType, int, bool, Exception> _messageReceived =
+            LoggerMessage.Define<WebSocketMessageType, int, bool>(LogLevel.Trace, new EventId(9, "MessageReceived"),
+                "Message received. Type: {MessageType}, size: {Size}, EndOfMessage: {EndOfMessage}.");
 
-            private static readonly Action<ILogger, int, Exception> _messageToApplication =
-                LoggerMessage.Define<int>(LogLevel.Trace, new EventId(10, "MessageToApplication"), "Passing message to application. Payload size: {Size}.");
+        private static readonly Action<ILogger, int, Exception> _messageToApplication =
+            LoggerMessage.Define<int>(LogLevel.Trace, new EventId(10, "MessageToApplication"),
+                "Passing message to application. Payload size: {Size}.");
 
-            private static readonly Action<ILogger, long, Exception> _sendPayload =
-                LoggerMessage.Define<long>(LogLevel.Trace, new EventId(11, "SendPayload"), "Sending payload: {Size} bytes.");
+        private static readonly Action<ILogger, long, Exception> _sendPayload =
+            LoggerMessage.Define<long>(LogLevel.Trace, new EventId(11, "SendPayload"),
+                "Sending payload: {Size} bytes.");
 
-            private static readonly Action<ILogger, Exception> _errorWritingFrame =
-                LoggerMessage.Define(LogLevel.Error, new EventId(12, "ErrorWritingFrame"), "Error writing frame.");
+        private static readonly Action<ILogger, Exception> _errorWritingFrame =
+            LoggerMessage.Define(LogLevel.Error, new EventId(12, "ErrorWritingFrame"), "Error writing frame.");
 
-            private static readonly Action<ILogger, Exception> _sendFailed =
-                LoggerMessage.Define(LogLevel.Error, new EventId(13, "SendFailed"), "Socket failed to send.");
+        private static readonly Action<ILogger, Exception> _sendFailed =
+            LoggerMessage.Define(LogLevel.Error, new EventId(13, "SendFailed"), "Socket failed to send.");
 
-            private static readonly Action<ILogger, Exception> _closedPrematurely =
-                LoggerMessage.Define(LogLevel.Debug, new EventId(14, "ClosedPrematurely"), "Socket connection closed prematurely.");
+        private static readonly Action<ILogger, Exception> _closedPrematurely =
+            LoggerMessage.Define(LogLevel.Debug, new EventId(14, "ClosedPrematurely"),
+                "Socket connection closed prematurely.");
 
-            public static void SocketOpened(ILogger logger, string subProtocol)
-            {
-                _socketOpened(logger, subProtocol, null);
-            }
+        public static void SocketOpened(ILogger logger, string subProtocol)
+        {
+            _socketOpened(logger, subProtocol, null);
+        }
 
-            public static void SocketClosed(ILogger logger)
-            {
-                _socketClosed(logger, null);
-            }
+        public static void SocketClosed(ILogger logger)
+        {
+            _socketClosed(logger, null);
+        }
 
-            public static void ClientClosed(ILogger logger, WebSocketCloseStatus? closeStatus, string closeDescription)
-            {
-                _clientClosed(logger, closeStatus, closeDescription, null);
-            }
+        public static void ClientClosed(ILogger logger, WebSocketCloseStatus? closeStatus, string closeDescription)
+        {
+            _clientClosed(logger, closeStatus, closeDescription, null);
+        }
 
-            public static void WaitingForSend(ILogger logger)
-            {
-                _waitingForSend(logger, null);
-            }
+        public static void WaitingForSend(ILogger logger)
+        {
+            _waitingForSend(logger, null);
+        }
 
-            public static void FailedSending(ILogger logger)
-            {
-                _failedSending(logger, null);
-            }
+        public static void FailedSending(ILogger logger)
+        {
+            _failedSending(logger, null);
+        }
+
+        public static void FinishedSending(ILogger logger)
+        {
+            _finishedSending(logger, null);
+        }
 
-            public static void FinishedSending(ILogger logger)
-            {
-                _finishedSending(logger, null);
-            }
+        public static void WaitingForClose(ILogger logger)
+        {
+            _waitingForClose(logger, null);
+        }
 
-            public static void WaitingForClose(ILogger logger)
-            {
-                _waitingForClose(logger, null);
-            }
+        public static void CloseTimedOut(ILogger logger)
+        {
+            _closeTimedOut(logger, null);
+        }
 
-            public static void CloseTimedOut(ILogger logger)
-            {
-                _closeTimedOut(logger, null);
-            }
+        public static void MessageReceived(ILogger logger, WebSocketMessageType type, int size, bool endOfMessage)
+        {
+            _messageReceived(logger, type, size, endOfMessage, null);
+        }
 
-            public static void MessageReceived(ILogger logger, WebSocketMessageType type, int size, bool endOfMessage)
-            {
-                _messageReceived(logger, type, size, endOfMessage, null);
-            }
+        public static void MessageToApplication(ILogger logger, int size)
+        {
+            _messageToApplication(logger, size, null);
+        }
 
-            public static void MessageToApplication(ILogger logger, int size)
-            {
-                _messageToApplication(logger, size, null);
-            }
+        public static void SendPayload(ILogger logger, long size)
+        {
+            _sendPayload(logger, size, null);
+        }
 
-            public static void SendPayload(ILogger logger, long size)
-            {
-                _sendPayload(logger, size, null);
-            }
+        public static void ErrorWritingFrame(ILogger logger, Exception ex)
+        {
+            _errorWritingFrame(logger, ex);
+        }
 
-            public static void ErrorWritingFrame(ILogger logger, Exception ex)
-            {
-                _errorWritingFrame(logger, ex);
-            }
+        public static void SendFailed(ILogger logger, Exception ex)
+        {
+            _sendFailed(logger, ex);
+        }
 
-            public static void SendFailed(ILogger logger, Exception ex)
-            {
-                _sendFailed(logger, ex);
-            }
-
-            public static void ClosedPrematurely(ILogger logger, Exception ex)
-            {
-                _closedPrematurely(logger, ex);
-            }
+        public static void ClosedPrematurely(ILogger logger, Exception ex)
+        {
+            _closedPrematurely(logger, ex);
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/WebSocketExtensions.cs b/src/graphql.server/WebSockets/WebSocketExtensions.cs
index 4c37e548b..ce6b0abbc 100644
--- a/src/graphql.server/WebSockets/WebSocketExtensions.cs
+++ b/src/graphql.server/WebSockets/WebSocketExtensions.cs
@@ -4,27 +4,26 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+internal static class WebSocketExtensions
 {
-    internal static class WebSocketExtensions
+    public static ValueTask SendAsync(this WebSocket webSocket, ReadOnlySequence<byte> buffer,
+        WebSocketMessageType webSocketMessageType, CancellationToken cancellationToken = default)
     {
-        public static ValueTask SendAsync(this WebSocket webSocket, ReadOnlySequence<byte> buffer,
-            WebSocketMessageType webSocketMessageType, CancellationToken cancellationToken = default)
-        {
-            if (buffer.IsSingleSegment)
-                return webSocket.SendAsync(buffer.First, webSocketMessageType, true, cancellationToken);
-            return SendMultiSegmentAsync(webSocket, buffer, webSocketMessageType, cancellationToken);
-        }
+        if (buffer.IsSingleSegment)
+            return webSocket.SendAsync(buffer.First, webSocketMessageType, true, cancellationToken);
+        return SendMultiSegmentAsync(webSocket, buffer, webSocketMessageType, cancellationToken);
+    }
 
-        private static async ValueTask SendMultiSegmentAsync(WebSocket webSocket, ReadOnlySequence<byte> buffer,
-            WebSocketMessageType webSocketMessageType, CancellationToken cancellationToken = default)
-        {
-            var position = buffer.Start;
-            while (buffer.TryGet(ref position, out var segment))
-                await webSocket.SendAsync(segment, webSocketMessageType, false, cancellationToken);
+    private static async ValueTask SendMultiSegmentAsync(WebSocket webSocket, ReadOnlySequence<byte> buffer,
+        WebSocketMessageType webSocketMessageType, CancellationToken cancellationToken = default)
+    {
+        var position = buffer.Start;
+        while (buffer.TryGet(ref position, out var segment))
+            await webSocket.SendAsync(segment, webSocketMessageType, false, cancellationToken);
 
-            // Empty end of message frame
-            await webSocket.SendAsync(Memory<byte>.Empty, webSocketMessageType, true, cancellationToken);
-        }
+        // Empty end of message frame
+        await webSocket.SendAsync(Memory<byte>.Empty, webSocketMessageType, true, cancellationToken);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/WebSocketPipe.cs b/src/graphql.server/WebSockets/WebSocketPipe.cs
index b71475425..033392388 100644
--- a/src/graphql.server/WebSockets/WebSocketPipe.cs
+++ b/src/graphql.server/WebSockets/WebSocketPipe.cs
@@ -10,253 +10,246 @@
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public partial class WebSocketPipe : IDuplexPipe
 {
-    public partial class WebSocketPipe : IDuplexPipe
-    {
-        private readonly TimeSpan _closeTimeout;
-        private readonly ILogger<WebSocketPipe> _logger;
-        private readonly Pipe _readPipe;
-        private readonly Pipe _writePipe;
-        private volatile bool _aborted;
+    private readonly TimeSpan _closeTimeout;
+    private readonly ILogger<WebSocketPipe> _logger;
+    private readonly Pipe _readPipe;
+    private readonly Pipe _writePipe;
+    private volatile bool _aborted;
 
-        public WebSocketPipe(ILoggerFactory loggerFactory)
-        {
-            _writePipe = new Pipe();
-            _readPipe = new Pipe();
-            _logger = loggerFactory.CreateLogger<WebSocketPipe>();
-            _closeTimeout = TimeSpan.FromSeconds(5);
-        }
+    public WebSocketPipe(ILoggerFactory loggerFactory)
+    {
+        _writePipe = new Pipe();
+        _readPipe = new Pipe();
+        _logger = loggerFactory.CreateLogger<WebSocketPipe>();
+        _closeTimeout = TimeSpan.FromSeconds(5);
+    }
 
-        public PipeReader Input => _readPipe.Reader;
+    public PipeReader Input => _readPipe.Reader;
 
-        public PipeWriter Output => _writePipe.Writer;
+    public PipeWriter Output => _writePipe.Writer;
 
-        public async Task ProcessRequestAsync(HttpContext context)
-        {
-            var subProtocol = context.WebSockets.WebSocketRequestedProtocols.FirstOrDefault();
-            using var ws = await context.WebSockets.AcceptWebSocketAsync(subProtocol);
+    public async Task ProcessRequestAsync(HttpContext context)
+    {
+        var subProtocol = context.WebSockets.WebSocketRequestedProtocols.FirstOrDefault();
+        using var ws = await context.WebSockets.AcceptWebSocketAsync(subProtocol);
 
-            Log.SocketOpened(_logger, subProtocol);
+        Log.SocketOpened(_logger, subProtocol);
 
-            try
-            {
-                await ProcessSocketAsync(ws, context.RequestAborted);
-            }
-            finally
-            {
-                Log.SocketClosed(_logger);
-            }
+        try
+        {
+            await ProcessSocketAsync(ws, context.RequestAborted);
         }
-
-        public async Task ProcessSocketAsync(WebSocket socket, CancellationToken cancellationToken)
+        finally
         {
-            // Begin sending and receiving. Receiving must be started first because ExecuteAsync enables SendAsync.
-            var receiving = StartReceiving(socket, cancellationToken);
-            var sending = StartSending(socket);
+            Log.SocketClosed(_logger);
+        }
+    }
 
-            // Wait for send or receive to complete
-            var trigger = await Task.WhenAny(receiving, sending);
+    public async Task ProcessSocketAsync(WebSocket socket, CancellationToken cancellationToken)
+    {
+        // Begin sending and receiving. Receiving must be started first because ExecuteAsync enables SendAsync.
+        var receiving = StartReceiving(socket, cancellationToken);
+        var sending = StartSending(socket);
 
-            if (trigger == receiving)
-            {
-                Log.WaitingForSend(_logger);
+        // Wait for send or receive to complete
+        var trigger = await Task.WhenAny(receiving, sending);
 
-                // We're waiting for the application to finish and there are 2 things it could be doing
-                // 1. Waiting for application data
-                // 2. Waiting for a websocket send to complete
+        if (trigger == receiving)
+        {
+            Log.WaitingForSend(_logger);
 
-                // Cancel the application so that ReadAsync yields
-                _writePipe.Reader.CancelPendingRead();
+            // We're waiting for the application to finish and there are 2 things it could be doing
+            // 1. Waiting for application data
+            // 2. Waiting for a websocket send to complete
 
-                using var delayCts = new CancellationTokenSource();
-                var resultTask = await Task.WhenAny(sending, Task.Delay(_closeTimeout, delayCts.Token));
+            // Cancel the application so that ReadAsync yields
+            _writePipe.Reader.CancelPendingRead();
 
-                if (resultTask != sending)
-                {
-                    // We timed out so now we're in ungraceful shutdown mode
-                    Log.CloseTimedOut(_logger);
+            using var delayCts = new CancellationTokenSource();
+            var resultTask = await Task.WhenAny(sending, Task.Delay(_closeTimeout, delayCts.Token));
+
+            if (resultTask != sending)
+            {
+                // We timed out so now we're in ungraceful shutdown mode
+                Log.CloseTimedOut(_logger);
 
-                    // Abort the websocket if we're stuck in a pending send to the client
-                    _aborted = true;
+                // Abort the websocket if we're stuck in a pending send to the client
+                _aborted = true;
 
-                    socket.Abort();
-                }
-                else
-                {
-                    delayCts.Cancel();
-                }
+                socket.Abort();
             }
             else
             {
-                Log.WaitingForClose(_logger);
+                delayCts.Cancel();
+            }
+        }
+        else
+        {
+            Log.WaitingForClose(_logger);
 
-                // We're waiting on the websocket to close and there are 2 things it could be doing
-                // 1. Waiting for websocket data
-                // 2. Waiting on a flush to complete (backpressure being applied)
+            // We're waiting on the websocket to close and there are 2 things it could be doing
+            // 1. Waiting for websocket data
+            // 2. Waiting on a flush to complete (backpressure being applied)
 
-                using var delayCts = new CancellationTokenSource();
-                var resultTask = await Task.WhenAny(receiving, Task.Delay(_closeTimeout, delayCts.Token));
+            using var delayCts = new CancellationTokenSource();
+            var resultTask = await Task.WhenAny(receiving, Task.Delay(_closeTimeout, delayCts.Token));
 
-                if (resultTask != receiving)
-                {
-                    // Abort the websocket if we're stuck in a pending receive from the client
-                    _aborted = true;
+            if (resultTask != receiving)
+            {
+                // Abort the websocket if we're stuck in a pending receive from the client
+                _aborted = true;
 
-                    socket.Abort();
+                socket.Abort();
 
-                    // Cancel any pending flush so that we can quit
-                    _readPipe.Writer.CancelPendingFlush();
-                }
-                else
-                {
-                    delayCts.Cancel();
-                }
+                // Cancel any pending flush so that we can quit
+                _readPipe.Writer.CancelPendingFlush();
+            }
+            else
+            {
+                delayCts.Cancel();
             }
         }
+    }
 
-        private async Task StartReceiving(WebSocket socket, CancellationToken token)
+    private async Task StartReceiving(WebSocket socket, CancellationToken token)
+    {
+        try
         {
-            try
+            var separator = Encoding.UTF8.GetBytes(new[] { '\n' });
+            while (true)
             {
-                var separator = Encoding.UTF8.GetBytes(new[] {'\n'});
-                while (true)
-                {
-                    // Do a 0 byte read so that idle connections don't allocate a buffer when waiting for a read
-                    var emptyReadResult = await socket.ReceiveAsync(Memory<byte>.Empty, token);
+                // Do a 0 byte read so that idle connections don't allocate a buffer when waiting for a read
+                var emptyReadResult = await socket.ReceiveAsync(Memory<byte>.Empty, token);
 
-                    if (emptyReadResult.MessageType == WebSocketMessageType.Close) return;
+                if (emptyReadResult.MessageType == WebSocketMessageType.Close) return;
 
-                    var memory = _readPipe.Writer.GetMemory();
-                    var receiveResult = await socket.ReceiveAsync(memory, token);
+                var memory = _readPipe.Writer.GetMemory();
+                var receiveResult = await socket.ReceiveAsync(memory, token);
 
-                    // Need to check again for NetCoreApp2.2 because a close can happen between a 0-byte read and the actual read
-                    if (receiveResult.MessageType == WebSocketMessageType.Close) return;
+                // Need to check again for NetCoreApp2.2 because a close can happen between a 0-byte read and the actual read
+                if (receiveResult.MessageType == WebSocketMessageType.Close) return;
 
-                    Log.MessageReceived(
-                        _logger,
-                        receiveResult.MessageType,
-                        receiveResult.Count,
-                        receiveResult.EndOfMessage);
+                Log.MessageReceived(
+                    _logger,
+                    receiveResult.MessageType,
+                    receiveResult.Count,
+                    receiveResult.EndOfMessage);
 
-                    _readPipe.Writer.Advance(receiveResult.Count);
+                _readPipe.Writer.Advance(receiveResult.Count);
 
-                    if (receiveResult.EndOfMessage)
-                    {
-                        var mem = _readPipe.Writer.GetMemory();
-                        separator.AsSpan().CopyTo(mem.Span);
-                        _readPipe.Writer.Advance(separator.Length);
-                    }
+                if (receiveResult.EndOfMessage)
+                {
+                    var mem = _readPipe.Writer.GetMemory();
+                    separator.AsSpan().CopyTo(mem.Span);
+                    _readPipe.Writer.Advance(separator.Length);
+                }
 
-                    var flushResult = await _readPipe.Writer.FlushAsync();
+                var flushResult = await _readPipe.Writer.FlushAsync();
 
-                    // We canceled in the middle of applying back pressure
-                    // or if the consumer is done
-                    if (flushResult.IsCanceled || flushResult.IsCompleted) break;
-                }
-            }
-            catch (WebSocketException ex) when (ex.WebSocketErrorCode == WebSocketError.ConnectionClosedPrematurely)
-            {
-                // Client has closed the WebSocket connection without completing the close handshake
-                Log.ClosedPrematurely(_logger, ex);
-            }
-            catch (IOException ex)
-            {
-                // Client has closed the WebSocket connection without completing the close handshake
-                Log.ClosedPrematurely(_logger, ex);
+                // We canceled in the middle of applying back pressure
+                // or if the consumer is done
+                if (flushResult.IsCanceled || flushResult.IsCompleted) break;
             }
-            catch (OperationCanceledException)
-            {
-                // Ignore aborts, don't treat them like transport errors
-            }
-            catch (Exception ex)
+        }
+        catch (WebSocketException ex) when (ex.WebSocketErrorCode == WebSocketError.ConnectionClosedPrematurely)
+        {
+            // Client has closed the WebSocket connection without completing the close handshake
+            Log.ClosedPrematurely(_logger, ex);
+        }
+        catch (IOException ex)
+        {
+            // Client has closed the WebSocket connection without completing the close handshake
+            Log.ClosedPrematurely(_logger, ex);
+        }
+        catch (OperationCanceledException)
+        {
+            // Ignore aborts, don't treat them like transport errors
+        }
+        catch (Exception ex)
+        {
+            if (!_aborted && !token.IsCancellationRequested)
             {
-                if (!_aborted && !token.IsCancellationRequested)
-                {
-                    _readPipe.Writer.Complete(ex);
+                _readPipe.Writer.Complete(ex);
 
-                    // We re-throw here so we can communicate that there was an error when sending
-                    // the close frame
-                    throw;
-                }
-            }
-            finally
-            {
-                // We're done writing
-                _readPipe.Writer.Complete();
+                // We re-throw here so we can communicate that there was an error when sending
+                // the close frame
+                throw;
             }
         }
-
-        private async Task StartSending(WebSocket socket)
+        finally
         {
-            Exception error = null;
+            // We're done writing
+            _readPipe.Writer.Complete();
+        }
+    }
+
+    private async Task StartSending(WebSocket socket)
+    {
+        Exception error = null;
 
-            try
+        try
+        {
+            var reader = _writePipe.Reader;
+            while (true)
             {
-                var reader = _writePipe.Reader;
-                while (true)
-                {
-                    var result = await reader.ReadAsync();
-                    var buffer = result.Buffer;
-                    SequencePosition? position = null;
+                var result = await reader.ReadAsync();
+                var buffer = result.Buffer;
+                SequencePosition? position = null;
 
-                    if (result.IsCanceled)
-                        break;
+                if (result.IsCanceled)
+                    break;
 
-                    do 
+                do
+                {
+                    // Look for a EOL in the buffer
+                    position = buffer.PositionOf((byte)'\n');
+
+                    if (position != null)
                     {
-                        // Look for a EOL in the buffer
-                        position = buffer.PositionOf((byte)'\n');
-
-                        if (position != null)
-                        {
-                            // Process the line
-                            var message = buffer.Slice(0, position.Value);
-                            if (WebSocketCanSend(socket))
-                                await socket.SendAsync(message, WebSocketMessageType.Text);
-                            else
-                            {
-                                break;
-                            }
-                
-                            // Skip the line + the \n character (basically position)
-                            buffer = buffer.Slice(buffer.GetPosition(1, position.Value));
-                        }
+                        // Process the line
+                        var message = buffer.Slice(0, position.Value);
+                        if (WebSocketCanSend(socket))
+                            await socket.SendAsync(message, WebSocketMessageType.Text);
+                        else
+                            break;
+
+                        // Skip the line + the \n character (basically position)
+                        buffer = buffer.Slice(buffer.GetPosition(1, position.Value));
                     }
-                    while (position != null);
+                } while (position != null);
 
-                    // Tell the PipeReader how much of the buffer we have consumed
-                    reader.AdvanceTo(buffer.Start, buffer.End);
+                // Tell the PipeReader how much of the buffer we have consumed
+                reader.AdvanceTo(buffer.Start, buffer.End);
 
-                    // Stop reading if there's no more data coming
-                    if (result.IsCompleted)
-                    {
-                        break;
-                    }
-                }
-            }
-            catch (Exception ex)
-            {
-                error = ex;
-            }
-            finally
-            {
-                // Send the close frame before calling into user code
-                if (WebSocketCanSend(socket))
-                    // We're done sending, send the close frame to the client if the websocket is still open
-                    await socket.CloseOutputAsync(
-                        error != null ? WebSocketCloseStatus.InternalServerError : WebSocketCloseStatus.NormalClosure,
-                        "", CancellationToken.None);
-
-                _writePipe.Reader.Complete();
+                // Stop reading if there's no more data coming
+                if (result.IsCompleted) break;
             }
         }
-
-        private static bool WebSocketCanSend(WebSocket ws)
+        catch (Exception ex)
         {
-            return !(ws.State == WebSocketState.Aborted ||
-                     ws.State == WebSocketState.Closed ||
-                     ws.State == WebSocketState.CloseSent);
+            error = ex;
         }
+        finally
+        {
+            // Send the close frame before calling into user code
+            if (WebSocketCanSend(socket))
+                // We're done sending, send the close frame to the client if the websocket is still open
+                await socket.CloseOutputAsync(
+                    error != null ? WebSocketCloseStatus.InternalServerError : WebSocketCloseStatus.NormalClosure,
+                    "", CancellationToken.None);
+
+            _writePipe.Reader.Complete();
+        }
+    }
+
+    private static bool WebSocketCanSend(WebSocket ws)
+    {
+        return !(ws.State == WebSocketState.Aborted ||
+                 ws.State == WebSocketState.Closed ||
+                 ws.State == WebSocketState.CloseSent);
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/WebSocketServer.cs b/src/graphql.server/WebSockets/WebSocketServer.cs
index 83a04ae70..45d6fda48 100644
--- a/src/graphql.server/WebSockets/WebSocketServer.cs
+++ b/src/graphql.server/WebSockets/WebSocketServer.cs
@@ -6,56 +6,55 @@
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class WebSocketServer
 {
-    public class WebSocketServer
+    private readonly ILogger<WebSocketServer> _logger;
+    private readonly ILoggerFactory _loggerFactory;
+    private readonly IOptions<WebSocketServerOptions> _options;
+
+    public WebSocketServer(
+        ILoggerFactory loggerFactory,
+        IOptions<WebSocketServerOptions> options)
     {
-        private readonly ILoggerFactory _loggerFactory;
-        private readonly ILogger<WebSocketServer> _logger;
-        private readonly IOptions<WebSocketServerOptions> _options;
+        _loggerFactory = loggerFactory;
+        _logger = loggerFactory.CreateLogger<WebSocketServer>();
+        _options = options;
+    }
+
+    public ConcurrentDictionary<string, MessageServer> Clients { get; } = new();
 
-        public WebSocketServer(
-            ILoggerFactory loggerFactory,
-            IOptions<WebSocketServerOptions> options)
+    public async Task ProcessRequestAsync(HttpContext context)
+    {
+        try
         {
-            _loggerFactory = loggerFactory;
-            _logger = loggerFactory.CreateLogger<WebSocketServer>();
-            _options = options;
-        }
+            _logger.LogInformation($"Processing WebSocket: {context.TraceIdentifier}");
+            var connection = new WebSocketPipe(_loggerFactory);
+            var protocol = context.RequestServices
+                .GetRequiredService<IProtocolHandler>();
 
-        public ConcurrentDictionary<string, MessageServer> Clients { get; } =
-            new ConcurrentDictionary<string, MessageServer>();
+            var messageServer = new SubscriptionServer(protocol, _options);
 
-        public async Task ProcessRequestAsync(HttpContext context)
+            Clients.TryAdd(context.TraceIdentifier, messageServer);
+            var run = messageServer.RunAsync(connection, context.RequestAborted);
+            await connection.ProcessRequestAsync(context);
+            await run;
+        }
+        catch (Exception e)
         {
-            try
-            {
-                _logger.LogInformation($"Processing WebSocket: {context.TraceIdentifier}");
-                var connection = new WebSocketPipe(_loggerFactory);
-                var protocol = context.RequestServices
-                    .GetRequiredService<IProtocolHandler>();
-                
-                var messageServer = new SubscriptionServer(protocol, _options);
-
-                Clients.TryAdd(context.TraceIdentifier, messageServer);
-                var run = messageServer.RunAsync(connection, context.RequestAborted);
-                await connection.ProcessRequestAsync(context);
-                await run;
-            }
-            catch (Exception e)
-            {
-                _logger.LogError(e, $"Processing websocket failed: {context.TraceIdentifier}");
-                throw;
-            }
-            finally
+            _logger.LogError(e, $"Processing websocket failed: {context.TraceIdentifier}");
+            throw;
+        }
+        finally
+        {
+            if (Clients.TryRemove(context.TraceIdentifier, out var s))
             {
-                if (Clients.TryRemove(context.TraceIdentifier, out var s))
-                {
-                    s.Complete();
-                    await s.Completion;
-                }
-                _logger.LogInformation($"Processing websocket finished: {context.TraceIdentifier}");
+                s.Complete();
+                await s.Completion;
             }
+
+            _logger.LogInformation($"Processing websocket finished: {context.TraceIdentifier}");
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql.server/WebSockets/WebSocketServerOptions.cs b/src/graphql.server/WebSockets/WebSocketServerOptions.cs
index f816699f7..5c96ca4b1 100644
--- a/src/graphql.server/WebSockets/WebSocketServerOptions.cs
+++ b/src/graphql.server/WebSockets/WebSocketServerOptions.cs
@@ -5,31 +5,30 @@
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 using Tanka.GraphQL.Server.WebSockets.DTOs.Serialization.Converters;
 
-namespace Tanka.GraphQL.Server.WebSockets
+namespace Tanka.GraphQL.Server.WebSockets;
+
+public class WebSocketServerOptions
 {
-    public class WebSocketServerOptions
+    /// <summary>
+    ///     Method called when `connection_init` message is received from client to validate
+    ///     the connectionParams
+    /// </summary>
+    /// <returns>true if connection accepted; otherwise false</returns>
+    public Func<MessageContext, Task> AcceptAsync { get; set; } = async context =>
     {
-        /// <summary>
-        ///     Method called when `connection_init` message is received from client to validate
-        ///     the connectionParams
-        /// </summary>
-        /// <returns>true if connection accepted; otherwise false</returns>
-        public Func<MessageContext, Task> AcceptAsync { get; set; } = async context =>
+        await context.Output.WriteAsync(new OperationMessage
         {
-            await context.Output.WriteAsync(new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_ACK
-            });
-        };
+            Type = MessageType.GQL_CONNECTION_ACK
+        });
+    };
 
-        public JsonSerializerOptions MessageSerializerOptions { get; set; } = new JsonSerializerOptions
+    public JsonSerializerOptions MessageSerializerOptions { get; set; } = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        Converters =
         {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-            Converters =
-            {
-                new ObjectDictionaryConverter(),
-                new OperationMessageConverter()
-            }
-        };
-    }
+            new ObjectDictionaryConverter(),
+            new OperationMessageConverter()
+        }
+    };
 }
\ No newline at end of file
diff --git a/src/graphql/Channels/ChannelReaderExtensions.cs b/src/graphql/Channels/ChannelReaderExtensions.cs
index 8bf01340a..776b8f24b 100644
--- a/src/graphql/Channels/ChannelReaderExtensions.cs
+++ b/src/graphql/Channels/ChannelReaderExtensions.cs
@@ -2,137 +2,136 @@
 using System.Threading.Channels;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Channels
+namespace Tanka.GraphQL.Channels;
+
+public static class ChannelReaderExtensions
 {
-    public static class ChannelReaderExtensions
+    /// <summary>
+    ///     Read items from reader and write to writer
+    /// </summary>
+    /// <typeparam name="T">Type of the item</typeparam>
+    /// <param name="reader">Read channel</param>
+    /// <param name="writer">Write channel</param>
+    /// <returns></returns>
+    public static async Task WriteTo<T>(
+        this ChannelReader<T> reader,
+        ChannelWriter<T> writer)
+    {
+        try
+        {
+            while (await reader.WaitToReadAsync())
+            while (reader.TryRead(out var evnt))
+            while (!writer.TryWrite(evnt))
+                if (!await writer.WaitToWriteAsync())
+                    return;
+
+            // Manifest any errors in the completion task
+            await reader.Completion;
+        }
+        catch (Exception ex)
+        {
+            writer.TryComplete(ex);
+        }
+        finally
+        {
+            // This will safely no-op if the catch block above ran.
+            writer.TryComplete();
+        }
+    }
+
+    /// <summary>
+    ///     Read items from reader, transform and write to writer
+    ///     and optionally complete writer when reader completes
+    ///     or errors.
+    /// </summary>
+    /// <typeparam name="TSource">Type of the item</typeparam>
+    /// <typeparam name="TTarget">Type of the target item</typeparam>
+    /// <param name="reader">Read channel</param>
+    /// <param name="writer">Write channel</param>
+    /// <param name="transformAsync"></param>
+    /// <param name="completeOnReaderCompletion">Complete writer on reader</param>
+    /// <returns></returns>
+    /// <returns></returns>
+    public static async Task TransformAndWriteTo<TSource, TTarget>(
+        this ChannelReader<TSource> reader,
+        ChannelWriter<TTarget> writer,
+        Func<TSource, Task<TTarget>> transformAsync,
+        bool completeOnReaderCompletion = true)
     {
-        /// <summary>
-        ///     Read items from reader and write to writer
-        /// </summary>
-        /// <typeparam name="T">Type of the item</typeparam>
-        /// <param name="reader">Read channel</param>
-        /// <param name="writer">Write channel</param>
-        /// <returns></returns>
-        public static async Task WriteTo<T>(
-            this ChannelReader<T> reader,
-            ChannelWriter<T> writer)
+        try
         {
-            try
+            while (await reader.WaitToReadAsync())
+            while (reader.TryRead(out var evnt))
             {
-                while (await reader.WaitToReadAsync())
-                while (reader.TryRead(out var evnt))
-                while (!writer.TryWrite(evnt))
+                var executionResult = await transformAsync(evnt);
+
+                while (!writer.TryWrite(executionResult))
                     if (!await writer.WaitToWriteAsync())
                         return;
-
-                // Manifest any errors in the completion task
-                await reader.Completion;
             }
-            catch (Exception ex)
-            {
+
+            // Manifest any errors in the completion task
+            await reader.Completion;
+        }
+        catch (Exception ex)
+        {
+            if (completeOnReaderCompletion)
                 writer.TryComplete(ex);
-            }
-            finally
-            {
-                // This will safely no-op if the catch block above ran.
+
+            throw;
+        }
+        finally
+        {
+            // This will safely no-op if the catch block above ran.
+            if (completeOnReaderCompletion)
                 writer.TryComplete();
-            }
         }
+    }
 
-        /// <summary>
-        ///     Read items from reader, transform and write to writer
-        ///     and optionally complete writer when reader completes
-        ///     or errors.
-        /// </summary>
-        /// <typeparam name="TSource">Type of the item</typeparam>
-        /// <typeparam name="TTarget">Type of the target item</typeparam>
-        /// <param name="reader">Read channel</param>
-        /// <param name="writer">Write channel</param>
-        /// <param name="transformAsync"></param>
-        /// <param name="completeOnReaderCompletion">Complete writer on reader</param>
-        /// <returns></returns>
-        /// <returns></returns>
-        public static async Task TransformAndWriteTo<TSource, TTarget>(
-            this ChannelReader<TSource> reader,
-            ChannelWriter<TTarget> writer,
-            Func<TSource, Task<TTarget>> transformAsync,
-            bool completeOnReaderCompletion = true)
+    /// <summary>
+    ///     Read data from reader, transform and optionally complete
+    ///     writer when reader competes or errors.
+    /// </summary>
+    /// <typeparam name="TSource">Type of source item</typeparam>
+    /// <typeparam name="TTarget">Type of target item</typeparam>
+    /// <param name="reader"></param>
+    /// <param name="writer"></param>
+    /// <param name="transform"></param>
+    /// <param name="completeOnReaderCompletion">Complete writer on reader</param>
+    /// <returns></returns>
+    public static async Task TransformAndWriteTo<TSource, TTarget>(
+        this ChannelReader<TSource> reader,
+        ChannelWriter<TTarget> writer,
+        Func<TSource, TTarget> transform,
+        bool completeOnReaderCompletion = true)
+    {
+        try
         {
-            try
+            while (await reader.WaitToReadAsync())
+            while (reader.TryRead(out var evnt))
             {
-                while (await reader.WaitToReadAsync())
-                while (reader.TryRead(out var evnt))
-                {
-                    var executionResult = await transformAsync(evnt);
-
-                    while (!writer.TryWrite(executionResult))
-                        if (!await writer.WaitToWriteAsync())
-                            return;
-                }
+                var executionResult = transform(evnt);
 
-                // Manifest any errors in the completion task
-                await reader.Completion;
+                while (!writer.TryWrite(executionResult))
+                    if (!await writer.WaitToWriteAsync())
+                        return;
             }
-            catch (Exception ex)
-            {
-                if (completeOnReaderCompletion)
-                    writer.TryComplete(ex);
 
-                throw;
-            }
-            finally
-            {
-                // This will safely no-op if the catch block above ran.
-                if(completeOnReaderCompletion)
-                    writer.TryComplete();
-            }
+            // Manifest any errors in the completion task
+            await reader.Completion;
         }
-
-        /// <summary>
-        ///     Read data from reader, transform and optionally complete
-        ///     writer when reader competes or errors.
-        /// </summary>
-        /// <typeparam name="TSource">Type of source item</typeparam>
-        /// <typeparam name="TTarget">Type of target item</typeparam>
-        /// <param name="reader"></param>
-        /// <param name="writer"></param>
-        /// <param name="transform"></param>
-        /// <param name="completeOnReaderCompletion">Complete writer on reader</param>
-        /// <returns></returns>
-        public static async Task TransformAndWriteTo<TSource, TTarget>(
-            this ChannelReader<TSource> reader,
-            ChannelWriter<TTarget> writer,
-            Func<TSource, TTarget> transform,
-            bool completeOnReaderCompletion = true)
+        catch (Exception ex)
         {
-            try
-            {
-                while (await reader.WaitToReadAsync())
-                while (reader.TryRead(out var evnt))
-                {
-                    var executionResult = transform(evnt);
-
-                    while (!writer.TryWrite(executionResult))
-                        if (!await writer.WaitToWriteAsync())
-                            return;
-                }
-
-                // Manifest any errors in the completion task
-                await reader.Completion;
-            }
-            catch (Exception ex)
-            {
-                if (completeOnReaderCompletion)
-                    writer.TryComplete(ex);
+            if (completeOnReaderCompletion)
+                writer.TryComplete(ex);
 
-                throw;
-            }
-            finally
-            {
-                // This will safely no-op if the catch block above ran.
-                if(completeOnReaderCompletion)
-                    writer.TryComplete();
-            }
+            throw;
+        }
+        finally
+        {
+            // This will safely no-op if the catch block above ran.
+            if (completeOnReaderCompletion)
+                writer.TryComplete();
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Channels/EventChannel.cs b/src/graphql/Channels/EventChannel.cs
index 91d3d17ef..d400ad8d2 100644
--- a/src/graphql/Channels/EventChannel.cs
+++ b/src/graphql/Channels/EventChannel.cs
@@ -4,47 +4,43 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Channels
-{
-    public class EventChannel<T>
-    {
-        private readonly ConcurrentDictionary<CancellationToken, ISubscriberResult> 
-            _subscriptions = new ConcurrentDictionary<CancellationToken, ISubscriberResult>();
-
-        protected IEnumerable<KeyValuePair<CancellationToken, ISubscriberResult>> Subscriptions => _subscriptions;
+namespace Tanka.GraphQL.Channels;
 
-        public ISubscriberResult Subscribe(CancellationToken unsubscribe)
-        {
-            var subscription = new SubscriberResult();
-            _subscriptions[unsubscribe] = subscription;
+public class EventChannel<T>
+{
+    private readonly ConcurrentDictionary<CancellationToken, ISubscriberResult>
+        _subscriptions = new();
 
-            unsubscribe.Register(() =>
-            {
-                if (_subscriptions.TryRemove(unsubscribe, out var sub))
-                {
-                    OnUnsubscribing(sub);
-                    sub.TryComplete();
-                }
-            });
-
-            OnSubscribed(subscription);
-            return subscription;
-        }
-
-        public virtual void OnSubscribed(ISubscriberResult subscription)
-        {
-        }
+    protected IEnumerable<KeyValuePair<CancellationToken, ISubscriberResult>> Subscriptions => _subscriptions;
 
-        public virtual void OnUnsubscribing(ISubscriberResult subscription)
-        {
-        }
+    public ISubscriberResult Subscribe(CancellationToken unsubscribe)
+    {
+        var subscription = new SubscriberResult();
+        _subscriptions[unsubscribe] = subscription;
 
-        public virtual async ValueTask WriteAsync(T item)
+        unsubscribe.Register(() =>
         {
-            foreach (var subscription in _subscriptions)
+            if (_subscriptions.TryRemove(unsubscribe, out var sub))
             {
-                await subscription.Value.WriteAsync(item, subscription.Key);
+                OnUnsubscribing(sub);
+                sub.TryComplete();
             }
-        }
+        });
+
+        OnSubscribed(subscription);
+        return subscription;
+    }
+
+    public virtual void OnSubscribed(ISubscriberResult subscription)
+    {
+    }
+
+    public virtual void OnUnsubscribing(ISubscriberResult subscription)
+    {
+    }
+
+    public virtual async ValueTask WriteAsync(T item)
+    {
+        foreach (var subscription in _subscriptions) await subscription.Value.WriteAsync(item, subscription.Key);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Channels/PoliteEventChannel.cs b/src/graphql/Channels/PoliteEventChannel.cs
index 3b75c6b27..0e46efeca 100644
--- a/src/graphql/Channels/PoliteEventChannel.cs
+++ b/src/graphql/Channels/PoliteEventChannel.cs
@@ -1,29 +1,28 @@
 using System.Threading;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Channels
+namespace Tanka.GraphQL.Channels;
+
+public class PoliteEventChannel<T> : EventChannel<T>
 {
-    public class PoliteEventChannel<T> : EventChannel<T>
+    private readonly T _byeItem;
+    private readonly T _welcomeItem;
+
+    public PoliteEventChannel(T welcomeItem, T byeItem = default)
     {
-        private readonly T _byeItem;
-        private readonly T _welcomeItem;
+        _welcomeItem = welcomeItem;
+        _byeItem = byeItem;
+    }
 
-        public PoliteEventChannel(T welcomeItem, T byeItem = default)
-        {
-            _welcomeItem = welcomeItem;
-            _byeItem = byeItem;
-        }
-        
-        public override void OnSubscribed(ISubscriberResult subscription)
-        {
-            if (!_welcomeItem.Equals(default(T)))
-                subscription.WriteAsync(_welcomeItem, CancellationToken.None);
-        }
+    public override void OnSubscribed(ISubscriberResult subscription)
+    {
+        if (!_welcomeItem.Equals(default(T)))
+            subscription.WriteAsync(_welcomeItem, CancellationToken.None);
+    }
 
-        public override void OnUnsubscribing(ISubscriberResult subscription)
-        {
-            if (!_byeItem.Equals(default(T)))
-                subscription.WriteAsync(_byeItem, CancellationToken.None);
-        }
+    public override void OnUnsubscribing(ISubscriberResult subscription)
+    {
+        if (!_byeItem.Equals(default(T)))
+            subscription.WriteAsync(_byeItem, CancellationToken.None);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Directives/CreateDirectiveVisitor.cs b/src/graphql/Directives/CreateDirectiveVisitor.cs
index 22917f6d8..9923ee7f3 100644
--- a/src/graphql/Directives/CreateDirectiveVisitor.cs
+++ b/src/graphql/Directives/CreateDirectiveVisitor.cs
@@ -1,4 +1,3 @@
-namespace Tanka.GraphQL.Directives
-{
-    public delegate DirectiveVisitor CreateDirectiveVisitor(SchemaBuilder builder);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.Directives;
+
+public delegate DirectiveVisitor CreateDirectiveVisitor(SchemaBuilder builder);
\ No newline at end of file
diff --git a/src/graphql/Directives/DirectiveFieldVisitorContext.cs b/src/graphql/Directives/DirectiveFieldVisitorContext.cs
index 43efda3f7..4e17ab58d 100644
--- a/src/graphql/Directives/DirectiveFieldVisitorContext.cs
+++ b/src/graphql/Directives/DirectiveFieldVisitorContext.cs
@@ -2,78 +2,78 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Directives
+namespace Tanka.GraphQL.Directives;
+
+public class DirectiveFieldVisitorContext : IEquatable<DirectiveFieldVisitorContext>
 {
-    public class DirectiveFieldVisitorContext: IEquatable<DirectiveFieldVisitorContext>
+    public DirectiveFieldVisitorContext(
+        FieldDefinition value,
+        Resolver resolver,
+        Subscriber subscriber)
+    {
+        Field = value;
+        Resolver = resolver;
+        Subscriber = subscriber;
+    }
+
+    public FieldDefinition Field { get; }
+
+    public Resolver Resolver { get; }
+
+    public Subscriber Subscriber { get; }
+
+    public bool Equals(DirectiveFieldVisitorContext? other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return Field.Equals(other.Field) && Resolver.Equals(other.Resolver) && Subscriber.Equals(other.Subscriber);
+    }
+
+    public DirectiveFieldVisitorContext WithResolver(Action<ResolverBuilder> build)
+    {
+        if (build == null) throw new ArgumentNullException(nameof(build));
+
+        var builder = new ResolverBuilder();
+        build(builder);
+
+        return new DirectiveFieldVisitorContext(Field, builder.Build(), Subscriber);
+    }
+
+    public DirectiveFieldVisitorContext WithSubscriber(Action<ResolverBuilder> buildResolver,
+        Action<SubscriberBuilder> buildSubscriber)
+    {
+        if (buildResolver == null) throw new ArgumentNullException(nameof(buildResolver));
+        if (buildSubscriber == null) throw new ArgumentNullException(nameof(buildSubscriber));
+
+        var resolverBuilder = new ResolverBuilder();
+        buildResolver(resolverBuilder);
+
+        var subscriberBuilder = new SubscriberBuilder();
+        buildSubscriber(subscriberBuilder);
+
+        return new DirectiveFieldVisitorContext(Field, resolverBuilder.Build(), subscriberBuilder.Build());
+    }
+
+    public override bool Equals(object? obj)
+    {
+        if (ReferenceEquals(null, obj)) return false;
+        if (ReferenceEquals(this, obj)) return true;
+        if (obj.GetType() != GetType()) return false;
+        return Equals((DirectiveFieldVisitorContext)obj);
+    }
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine(Field, Resolver, Subscriber);
+    }
+
+    public static bool operator ==(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
+    {
+        return Equals(left, right);
+    }
+
+    public static bool operator !=(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
     {
-        public DirectiveFieldVisitorContext(
-            FieldDefinition value, 
-            Resolver resolver,
-            Subscriber subscriber)
-        {
-            Field = value;
-            Resolver = resolver;
-            Subscriber = subscriber;
-        }
-
-        public FieldDefinition Field { get; }
-
-        public Resolver Resolver { get; }
-
-        public Subscriber Subscriber { get; }
-
-        public DirectiveFieldVisitorContext WithResolver(Action<ResolverBuilder> build)
-        {
-            if (build == null) throw new ArgumentNullException(nameof(build));
-
-            var builder = new ResolverBuilder();
-            build(builder);
-
-            return new DirectiveFieldVisitorContext(Field, builder.Build(), Subscriber);
-        }
-
-        public DirectiveFieldVisitorContext WithSubscriber(Action<ResolverBuilder> buildResolver, Action<SubscriberBuilder> buildSubscriber)
-        {
-            if (buildResolver == null) throw new ArgumentNullException(nameof(buildResolver));
-            if (buildSubscriber == null) throw new ArgumentNullException(nameof(buildSubscriber));
-
-            var resolverBuilder = new ResolverBuilder();
-            buildResolver(resolverBuilder);
-
-            var subscriberBuilder = new SubscriberBuilder();
-            buildSubscriber(subscriberBuilder);
-
-            return new DirectiveFieldVisitorContext(Field, resolverBuilder.Build(), subscriberBuilder.Build());
-        }
-
-        public bool Equals(DirectiveFieldVisitorContext? other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Field.Equals(other.Field) && Resolver.Equals(other.Resolver) && Subscriber.Equals(other.Subscriber);
-        }
-
-        public override bool Equals(object? obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != this.GetType()) return false;
-            return Equals((DirectiveFieldVisitorContext)obj);
-        }
-
-        public override int GetHashCode()
-        {
-            return HashCode.Combine(Field, Resolver, Subscriber);
-        }
-
-        public static bool operator ==(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
-        {
-            return Equals(left, right);
-        }
-
-        public static bool operator !=(DirectiveFieldVisitorContext? left, DirectiveFieldVisitorContext? right)
-        {
-            return !Equals(left, right);
-        }
+        return !Equals(left, right);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Directives/DirectiveVisitor.cs b/src/graphql/Directives/DirectiveVisitor.cs
index 1aa08e7c8..f20b07c22 100644
--- a/src/graphql/Directives/DirectiveVisitor.cs
+++ b/src/graphql/Directives/DirectiveVisitor.cs
@@ -1,9 +1,8 @@
-namespace Tanka.GraphQL.Directives
+namespace Tanka.GraphQL.Directives;
+
+public class DirectiveVisitor
 {
-    public class DirectiveVisitor
-    {
-        public DirectiveNodeVisitor<DirectiveFieldVisitorContext>? FieldDefinition { get; set; }
+    public DirectiveNodeVisitor<DirectiveFieldVisitorContext>? FieldDefinition { get; set; }
 
-        public DirectiveNodeVisitor<DirectiveTypeVisitorContext>? TypeDefinition { get; set; }
-    }
+    public DirectiveNodeVisitor<DirectiveTypeVisitorContext>? TypeDefinition { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Arguments.cs b/src/graphql/Execution/Arguments.cs
index 42c4f8563..6d9d4b7d1 100644
--- a/src/graphql/Execution/Arguments.cs
+++ b/src/graphql/Execution/Arguments.cs
@@ -4,99 +4,98 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class ArgumentCoercion
 {
-    public static class ArgumentCoercion
+    public static object? CoerceArgumentValue(
+        ISchema schema,
+        IReadOnlyDictionary<string, object?>? coercedVariableValues,
+        string argumentName,
+        InputValueDefinition argumentDefinition,
+        Argument? argument)
     {
-        public static object? CoerceArgumentValue(
-            ISchema schema,
-            IReadOnlyDictionary<string, object?>? coercedVariableValues,
-            string argumentName,
-            InputValueDefinition argumentDefinition,
-            Argument? argument)
-        {
-            var argumentType = argumentDefinition.Type;
-            var defaultValue = argumentDefinition.DefaultValue?.Value;
-            var argumentValue = argument?.Value;
+        var argumentType = argumentDefinition.Type;
+        var defaultValue = argumentDefinition.DefaultValue?.Value;
+        var argumentValue = argument?.Value;
 
-            var hasValue = argumentValue != null;
-            object? value = null;
+        var hasValue = argumentValue != null;
+        object? value = null;
 
-            if (argumentValue is Variable variable)
+        if (argumentValue is Variable variable)
+        {
+            if (coercedVariableValues == null)
             {
-                if (coercedVariableValues == null)
-                {
-                    hasValue = false;
-                }
-                else
-                {
-                    string variableName = variable.Name;
-                    hasValue = coercedVariableValues.ContainsKey(variableName);
-                    if (hasValue)
-                        value = coercedVariableValues[variableName];
-                }
+                hasValue = false;
             }
             else
             {
-                value = argumentValue;
+                string variableName = variable.Name;
+                hasValue = coercedVariableValues.ContainsKey(variableName);
+                if (hasValue)
+                    value = coercedVariableValues[variableName];
             }
+        }
+        else
+        {
+            value = argumentValue;
+        }
 
-            if (argumentType is NonNullType && (!hasValue || value == null))
-                throw new ValueCoercionException(
-                    $"Argument '{argumentName}' is non-null but no value could be coerced",
-                    null,
-                    argumentType);
-
-            if (hasValue)
-            {
-                if (value == null) return null;
-
-                if (argumentValue is Variable) return value;
+        if (argumentType is NonNullType && (!hasValue || value == null))
+            throw new ValueCoercionException(
+                $"Argument '{argumentName}' is non-null but no value could be coerced",
+                null,
+                argumentType);
 
-                var coercedValue = Values.CoerceValue(
-                    schema,
-                    value,
-                    argumentType);
+        if (hasValue)
+        {
+            if (value == null) return null;
 
-                return coercedValue;
-            }
+            if (argumentValue is Variable) return value;
 
-            return Values.CoerceValue(
+            var coercedValue = Values.CoerceValue(
                 schema,
-                defaultValue,
+                value,
                 argumentType);
+
+            return coercedValue;
         }
 
-        public static IReadOnlyDictionary<string, object?> CoerceArgumentValues(
-            ISchema schema,
-            ObjectDefinition objectDefinition,
-            FieldSelection field,
-            IReadOnlyDictionary<string, object?> coercedVariableValues)
-        {
-            var coercedValues = new Dictionary<string, object?>();
+        return Values.CoerceValue(
+            schema,
+            defaultValue,
+            argumentType);
+    }
 
-            var argumentValues = field.Arguments ?? Arguments.None;
-            var fieldName = field.Name;
-            var argumentDefinitions = schema.GetRequiredField(objectDefinition.Name, fieldName)
-                .Arguments;
+    public static IReadOnlyDictionary<string, object?> CoerceArgumentValues(
+        ISchema schema,
+        ObjectDefinition objectDefinition,
+        FieldSelection field,
+        IReadOnlyDictionary<string, object?> coercedVariableValues)
+    {
+        var coercedValues = new Dictionary<string, object?>();
 
-            if (argumentDefinitions == null)
-                return coercedValues;
-
-            foreach (var definition in argumentDefinitions)
-            {
-                var argumentDefinition = definition;
-                Name argumentName = definition.Name;
-                var argument = argumentValues.SingleOrDefault(a => a.Name == argumentName);
-                coercedValues[argumentName] = CoerceArgumentValue(
-                    schema,
-                    coercedVariableValues,
-                    argumentName,
-                    argumentDefinition,
-                    argument);
-            }
+        var argumentValues = field.Arguments ?? Arguments.None;
+        var fieldName = field.Name;
+        var argumentDefinitions = schema.GetRequiredField(objectDefinition.Name, fieldName)
+            .Arguments;
 
+        if (argumentDefinitions == null)
             return coercedValues;
+
+        foreach (var definition in argumentDefinitions)
+        {
+            var argumentDefinition = definition;
+            var argumentName = definition.Name;
+            var argument = argumentValues.SingleOrDefault(a => a.Name == argumentName);
+            coercedValues[argumentName] = CoerceArgumentValue(
+                schema,
+                coercedVariableValues,
+                argumentName,
+                argumentDefinition,
+                argument);
         }
+
+        return coercedValues;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/ExecutorContext.cs b/src/graphql/Execution/ExecutorContext.cs
index 204f87042..b287fc91b 100644
--- a/src/graphql/Execution/ExecutorContext.cs
+++ b/src/graphql/Execution/ExecutorContext.cs
@@ -3,52 +3,51 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public class ExecutorContext : IExecutorContext
 {
-    public class ExecutorContext : IExecutorContext
+    private readonly List<Exception> _errors;
+
+    public ExecutorContext(ISchema schema,
+        ExecutableDocument document,
+        ExtensionsRunner extensionsRunner,
+        IExecutionStrategy strategy,
+        OperationDefinition operation,
+        IDictionary<string, FragmentDefinition>? fragments,
+        IReadOnlyDictionary<string, object?> coercedVariableValues)
     {
-        private readonly List<Exception> _errors;
-
-        public ExecutorContext(ISchema schema,
-            ExecutableDocument document,
-            ExtensionsRunner extensionsRunner,
-            IExecutionStrategy strategy,
-            OperationDefinition operation,
-            IDictionary<string, FragmentDefinition>? fragments, 
-            IReadOnlyDictionary<string, object?> coercedVariableValues)
-        {
-            Schema = schema ?? throw new ArgumentNullException(nameof(schema));
-            Document = document ?? throw new ArgumentNullException(nameof(document));
-            ExtensionsRunner = extensionsRunner ?? throw new ArgumentNullException(nameof(extensionsRunner));
-            Strategy = strategy ?? throw new ArgumentNullException(nameof(strategy));
-            Operation = operation;
-            Fragments = fragments ?? new Dictionary<string, FragmentDefinition>();
-            CoercedVariableValues = coercedVariableValues;
-            _errors = new List<Exception>();
-        }
+        Schema = schema ?? throw new ArgumentNullException(nameof(schema));
+        Document = document ?? throw new ArgumentNullException(nameof(document));
+        ExtensionsRunner = extensionsRunner ?? throw new ArgumentNullException(nameof(extensionsRunner));
+        Strategy = strategy ?? throw new ArgumentNullException(nameof(strategy));
+        Operation = operation;
+        Fragments = fragments ?? new Dictionary<string, FragmentDefinition>();
+        CoercedVariableValues = coercedVariableValues;
+        _errors = new List<Exception>();
+    }
 
-        public OperationDefinition Operation { get; }
+    public IDictionary<string, FragmentDefinition> Fragments { get; }
 
-        public IDictionary<string, FragmentDefinition> Fragments { get; }
+    public OperationDefinition Operation { get; }
 
-        public IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
+    public IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
 
-        public ISchema Schema { get; }
+    public ISchema Schema { get; }
 
-        public ExecutableDocument Document { get; }
+    public ExecutableDocument Document { get; }
 
-        public ExtensionsRunner ExtensionsRunner { get; }
+    public ExtensionsRunner ExtensionsRunner { get; }
 
-        public IEnumerable<Exception> FieldErrors => _errors;
+    public IEnumerable<Exception> FieldErrors => _errors;
 
-        public IExecutionStrategy Strategy { get; }
+    public IExecutionStrategy Strategy { get; }
 
-        public void AddError(Exception error)
-        {
-            if (_errors.Contains(error))
-                return;
+    public void AddError(Exception error)
+    {
+        if (_errors.Contains(error))
+            return;
 
-            _errors.Add(error);
-        }
+        _errors.Add(error);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/FieldErrors.cs b/src/graphql/Execution/FieldErrors.cs
index 3c893023e..77c9a2eef 100644
--- a/src/graphql/Execution/FieldErrors.cs
+++ b/src/graphql/Execution/FieldErrors.cs
@@ -2,32 +2,31 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class FieldErrors
 {
-    public static class FieldErrors
+    public static object? Handle(
+        IExecutorContext context,
+        ObjectDefinition objectDefinition,
+        string fieldName,
+        TypeBase fieldType,
+        FieldSelection fieldSelection,
+        object? completedValue,
+        Exception error,
+        NodePath path)
     {
-        public static object? Handle(
-            IExecutorContext context,
-            ObjectDefinition objectDefinition,
-            string fieldName,
-            TypeBase fieldType,
-            FieldSelection fieldSelection,
-            object? completedValue,
-            Exception error,
-            NodePath path)
-        {
-            if (error is not QueryExecutionException)
-                error = new QueryExecutionException(
-                    "",
-                    error,
-                    path,
-                    fieldSelection);
+        if (error is not QueryExecutionException)
+            error = new QueryExecutionException(
+                "",
+                error,
+                path,
+                fieldSelection);
 
-            if (fieldType is NonNullType)
-                throw error;
+        if (fieldType is NonNullType)
+            throw error;
 
-            context.AddError(error);
-            return completedValue;
-        }
+        context.AddError(error);
+        return completedValue;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/FieldGroups.cs b/src/graphql/Execution/FieldGroups.cs
index 1f349fefd..5b8ccb777 100644
--- a/src/graphql/Execution/FieldGroups.cs
+++ b/src/graphql/Execution/FieldGroups.cs
@@ -6,126 +6,125 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class FieldGroups
 {
-    public static class FieldGroups
+    public static async Task<object?> ExecuteFieldAsync(
+        IExecutorContext context,
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        IReadOnlyCollection<FieldSelection> fields,
+        TypeBase fieldType,
+        NodePath path)
     {
-        public static async Task<object?> ExecuteFieldAsync(
-            IExecutorContext context,
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            IReadOnlyCollection<FieldSelection> fields,
-            TypeBase fieldType,
-            NodePath path)
-        {
-            if (fields == null) throw new ArgumentNullException(nameof(fields));
-            if (fieldType == null) throw new ArgumentNullException(nameof(fieldType));
+        if (fields == null) throw new ArgumentNullException(nameof(fields));
+        if (fieldType == null) throw new ArgumentNullException(nameof(fieldType));
 
-            var schema = context.Schema;
-            var fieldSelection = fields.First();
-            var fieldName = fieldSelection.Name;
-            var field = schema.GetField(objectDefinition.Name, fieldName);
-            object? completedValue = null;
+        var schema = context.Schema;
+        var fieldSelection = fields.First();
+        var fieldName = fieldSelection.Name;
+        var field = schema.GetField(objectDefinition.Name, fieldName);
+        object? completedValue = null;
 
-            if (field is null)
-                return completedValue;
+        if (field is null)
+            return completedValue;
 
-            var argumentValues = ArgumentCoercion.CoerceArgumentValues(
-                schema,
-                objectDefinition,
-                fieldSelection,
-                context.CoercedVariableValues);
-
-            try
-            {
-                var resolver = schema.GetResolver(objectDefinition.Name, fieldName);
-
-                if (resolver == null)
-                    throw new QueryExecutionException(
-                        $"Could not get resolver for {objectDefinition.Name}.{fieldName}",
-                        path);
-
-                var resolverContext =
-                    new ResolverContext(
-                        objectDefinition,
-                        objectValue,
-                        field,
-                        fieldSelection,
-                        fields,
-                        argumentValues,
-                        path,
-                        context);
-
-                // begin resolve
-                await context.ExtensionsRunner.BeginResolveAsync(resolverContext);
-                var resultTask = resolver(resolverContext);
-
-                IResolverResult result;
-                if (resultTask.IsCompletedSuccessfully)
-                    result = resultTask.Result;
-                else
-                    result = await resultTask;
-
-                await context.ExtensionsRunner.EndResolveAsync(resolverContext, result);
-                // end resolve
-
-                // begin complete
-                var completedValueTask = result.CompleteValueAsync(resolverContext);
-                if (completedValueTask.IsCompletedSuccessfully)
-                    completedValue = completedValueTask.Result;
-                else
-                    completedValue = await completedValueTask;
-                // end complete
-
-                return completedValue;
-            }
-            catch (Exception e)
-            {
-                return FieldErrors.Handle(
-                    context,
-                    objectDefinition,
-                    fieldName,
-                    fieldType,
-                    fieldSelection,
-                    completedValue,
-                    e,
-                    path);
-            }
-        }
+        var argumentValues = ArgumentCoercion.CoerceArgumentValues(
+            schema,
+            objectDefinition,
+            fieldSelection,
+            context.CoercedVariableValues);
 
-        public static async Task<object?> ExecuteFieldGroupAsync(
-            IExecutorContext context,
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            KeyValuePair<string, IReadOnlyCollection<FieldSelection>> fieldGroup,
-            NodePath path)
+        try
         {
-            var schema = context.Schema;
-            var fields = fieldGroup.Value;
-            var fieldName = fields.First().Name;
-            path.Append(fieldName);
-
-            // __typename hack
-            if (fieldName == "__typename") return objectDefinition.Name.Value;
-
-            var fieldType = schema
-                .GetField(objectDefinition.Name, fieldName)?
-                .Type;
+            var resolver = schema.GetResolver(objectDefinition.Name, fieldName);
 
-            if (fieldType == null)
+            if (resolver == null)
                 throw new QueryExecutionException(
-                    $"Object '{objectDefinition.Name}' does not have field '{fieldName}'",
+                    $"Could not get resolver for {objectDefinition.Name}.{fieldName}",
                     path);
 
-            var responseValue = await ExecuteFieldAsync(
+            var resolverContext =
+                new ResolverContext(
+                    objectDefinition,
+                    objectValue,
+                    field,
+                    fieldSelection,
+                    fields,
+                    argumentValues,
+                    path,
+                    context);
+
+            // begin resolve
+            await context.ExtensionsRunner.BeginResolveAsync(resolverContext);
+            var resultTask = resolver(resolverContext);
+
+            IResolverResult result;
+            if (resultTask.IsCompletedSuccessfully)
+                result = resultTask.Result;
+            else
+                result = await resultTask;
+
+            await context.ExtensionsRunner.EndResolveAsync(resolverContext, result);
+            // end resolve
+
+            // begin complete
+            var completedValueTask = result.CompleteValueAsync(resolverContext);
+            if (completedValueTask.IsCompletedSuccessfully)
+                completedValue = completedValueTask.Result;
+            else
+                completedValue = await completedValueTask;
+            // end complete
+
+            return completedValue;
+        }
+        catch (Exception e)
+        {
+            return FieldErrors.Handle(
                 context,
                 objectDefinition,
-                objectValue,
-                fields,
+                fieldName,
                 fieldType,
-                path).ConfigureAwait(false);
-
-            return responseValue;
+                fieldSelection,
+                completedValue,
+                e,
+                path);
         }
     }
+
+    public static async Task<object?> ExecuteFieldGroupAsync(
+        IExecutorContext context,
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        KeyValuePair<string, IReadOnlyCollection<FieldSelection>> fieldGroup,
+        NodePath path)
+    {
+        var schema = context.Schema;
+        var fields = fieldGroup.Value;
+        var fieldName = fields.First().Name;
+        path.Append(fieldName);
+
+        // __typename hack
+        if (fieldName == "__typename") return objectDefinition.Name.Value;
+
+        var fieldType = schema
+            .GetField(objectDefinition.Name, fieldName)?
+            .Type;
+
+        if (fieldType == null)
+            throw new QueryExecutionException(
+                $"Object '{objectDefinition.Name}' does not have field '{fieldName}'",
+                path);
+
+        var responseValue = await ExecuteFieldAsync(
+            context,
+            objectDefinition,
+            objectValue,
+            fields,
+            fieldType,
+            path).ConfigureAwait(false);
+
+        return responseValue;
+    }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/IExecutionStrategy.cs b/src/graphql/Execution/IExecutionStrategy.cs
index 9e0577340..5726c2b3a 100644
--- a/src/graphql/Execution/IExecutionStrategy.cs
+++ b/src/graphql/Execution/IExecutionStrategy.cs
@@ -3,15 +3,14 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public interface IExecutionStrategy
 {
-    public interface IExecutionStrategy
-    {
-        Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
-            IExecutorContext context,
-            IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            NodePath path);
-    }
+    Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
+        IExecutorContext context,
+        IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        NodePath path);
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/IExecutorContext.cs b/src/graphql/Execution/IExecutorContext.cs
index bc3c6ac4a..b5fc56482 100644
--- a/src/graphql/Execution/IExecutorContext.cs
+++ b/src/graphql/Execution/IExecutorContext.cs
@@ -3,24 +3,22 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
-{
-    public interface IExecutorContext
-    {
-        OperationDefinition Operation { get; }
+namespace Tanka.GraphQL.Execution;
 
-        ISchema Schema { get; }
+public interface IExecutorContext
+{
+    IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
 
-        ExecutableDocument Document { get; }
+    ExecutableDocument Document { get; }
 
-        ExtensionsRunner ExtensionsRunner { get; }
+    ExtensionsRunner ExtensionsRunner { get; }
 
-        IEnumerable<Exception> FieldErrors { get; }
+    IEnumerable<Exception> FieldErrors { get; }
+    OperationDefinition Operation { get; }
 
-        IExecutionStrategy Strategy { get; }
+    ISchema Schema { get; }
 
-        IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
+    IExecutionStrategy Strategy { get; }
 
-        void AddError(Exception error);
-    }
+    void AddError(Exception error);
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Mutation.cs b/src/graphql/Execution/Mutation.cs
index c4923deeb..993921f20 100644
--- a/src/graphql/Execution/Mutation.cs
+++ b/src/graphql/Execution/Mutation.cs
@@ -1,39 +1,38 @@
 using System.Linq;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class Mutation
 {
-    public static class Mutation
+    public static async Task<ExecutionResult> ExecuteMutationAsync(
+        QueryContext context)
     {
-        public static async Task<ExecutionResult> ExecuteMutationAsync(
-            QueryContext context)
-        {
-            var (schema, _, operation, initialValue, coercedVariableValues) = context;
-            var executionContext = context.BuildExecutorContext(new SerialExecutionStrategy());
-            var path = new NodePath();
+        var (schema, _, operation, initialValue, coercedVariableValues) = context;
+        var executionContext = context.BuildExecutorContext(new SerialExecutionStrategy());
+        var path = new NodePath();
 
-            var mutationType = schema.Mutation;
-            if (mutationType == null)
-                throw new QueryExecutionException(
-                    "Schema does not support mutations. Mutation type is null.",
-                    path);
+        var mutationType = schema.Mutation;
+        if (mutationType == null)
+            throw new QueryExecutionException(
+                "Schema does not support mutations. Mutation type is null.",
+                path);
 
-            var selectionSet = operation.SelectionSet;
-            var data = await SelectionSets.ExecuteSelectionSetAsync(
-                executionContext,
-                selectionSet,
-                mutationType,
-                initialValue,
-                path).ConfigureAwait(false);
+        var selectionSet = operation.SelectionSet;
+        var data = await SelectionSets.ExecuteSelectionSetAsync(
+            executionContext,
+            selectionSet,
+            mutationType,
+            initialValue,
+            path).ConfigureAwait(false);
 
 
-            return new ExecutionResult
-            {
-                Errors = executionContext
-                    .FieldErrors
-                    .Select(context.FormatError).ToList(),
-                Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
-            };
-        }
+        return new ExecutionResult
+        {
+            Errors = executionContext
+                .FieldErrors
+                .Select(context.FormatError).ToList(),
+            Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/NodePath.cs b/src/graphql/Execution/NodePath.cs
index 0ac1da8ae..43cf3b238 100644
--- a/src/graphql/Execution/NodePath.cs
+++ b/src/graphql/Execution/NodePath.cs
@@ -1,38 +1,37 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public class NodePath
 {
-    public class NodePath
+    private readonly List<object> _path = new();
+
+    public NodePath()
+    {
+    }
+
+    protected NodePath(object[] segments)
+    {
+        _path.AddRange(segments);
+    }
+
+    public IEnumerable<object> Segments => _path;
+
+    public NodePath Append(string fieldName)
+    {
+        _path.Add(fieldName);
+        return this;
+    }
+
+    public NodePath Append(int index)
+    {
+        _path.Add(index);
+        return this;
+    }
+
+    public NodePath Fork()
     {
-        private readonly List<object> _path = new List<object>();
-
-        public NodePath()
-        {
-        }
-
-        protected NodePath(object[] segments)
-        {
-            _path.AddRange(segments);
-        }
-
-        public IEnumerable<object> Segments => _path;
-
-        public NodePath Append(string fieldName)
-        {
-            _path.Add(fieldName);
-            return this;
-        }
-
-        public NodePath Append(int index)
-        {
-            _path.Add(index);
-            return this;
-        }
-
-        public NodePath Fork()
-        {
-            return new NodePath(Segments.ToArray());
-        }
+        return new NodePath(Segments.ToArray());
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/ParallelExecutionStrategy.cs b/src/graphql/Execution/ParallelExecutionStrategy.cs
index 7bcad6d24..cb829a4e6 100644
--- a/src/graphql/Execution/ParallelExecutionStrategy.cs
+++ b/src/graphql/Execution/ParallelExecutionStrategy.cs
@@ -4,34 +4,33 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public class ParallelExecutionStrategy : IExecutionStrategy
 {
-    public class ParallelExecutionStrategy : IExecutionStrategy
+    public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
+        IExecutorContext context,
+        IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        NodePath path)
     {
-        public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
-            IExecutorContext context,
-            IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            NodePath path)
+        var tasks = new Dictionary<string, Task<object?>>();
+        foreach (var fieldGroup in groupedFieldSet)
         {
-            var tasks = new Dictionary<string, Task<object?>>();
-            foreach (var fieldGroup in groupedFieldSet)
-            {
-                var executionTask = FieldGroups.ExecuteFieldGroupAsync(
-                    context,
-                    objectDefinition,
-                    objectValue,
-                    //todo: following is dirty
-                    new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key,
-                        fieldGroup.Value),
-                    path.Fork());
-
-                tasks.Add(fieldGroup.Key, executionTask);
-            }
+            var executionTask = FieldGroups.ExecuteFieldGroupAsync(
+                context,
+                objectDefinition,
+                objectValue,
+                //todo: following is dirty
+                new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key,
+                    fieldGroup.Value),
+                path.Fork());
 
-            await Task.WhenAll(tasks.Values).ConfigureAwait(false);
-            return tasks.ToDictionary(kv => kv.Key, kv => kv.Value.Result);
+            tasks.Add(fieldGroup.Key, executionTask);
         }
+
+        await Task.WhenAll(tasks.Values).ConfigureAwait(false);
+        return tasks.ToDictionary(kv => kv.Key, kv => kv.Value.Result);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Query.cs b/src/graphql/Execution/Query.cs
index 666e02e5c..ce5e81643 100644
--- a/src/graphql/Execution/Query.cs
+++ b/src/graphql/Execution/Query.cs
@@ -2,50 +2,49 @@
 using System.Linq;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class Query
 {
-    public static class Query
+    public static async Task<ExecutionResult> ExecuteQueryAsync(
+        QueryContext context)
     {
-        public static async Task<ExecutionResult> ExecuteQueryAsync(
-            QueryContext context)
-        {
-            var (schema, _, operation, initialValue, coercedVariableValues) = context;
-            var queryType = schema.Query;
-            var path = new NodePath();
+        var (schema, _, operation, initialValue, coercedVariableValues) = context;
+        var queryType = schema.Query;
+        var path = new NodePath();
 
-            if (queryType == null)
-                throw new QueryExecutionException(
-                    "Schema does not support queries. Query type is null.",
-                    path);
+        if (queryType == null)
+            throw new QueryExecutionException(
+                "Schema does not support queries. Query type is null.",
+                path);
 
-            var selectionSet = operation.SelectionSet;
-            var executionContext = context.BuildExecutorContext(new ParallelExecutionStrategy());
+        var selectionSet = operation.SelectionSet;
+        var executionContext = context.BuildExecutorContext(new ParallelExecutionStrategy());
 
-            IDictionary<string, object?>? data;
+        IDictionary<string, object?>? data;
 
-            try
-            {
-                data = await SelectionSets.ExecuteSelectionSetAsync(
-                    executionContext,
-                    selectionSet,
-                    queryType,
-                    initialValue,
-                    path).ConfigureAwait(false);
-            }
-            catch (QueryExecutionException e)
-            {
-                executionContext.AddError(e);
-                data = null;
-            }
-
-            return new ExecutionResult
-            {
-                Errors = executionContext
-                    .FieldErrors
-                    .Select(context.FormatError)
-                    .ToList(),
-                Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
-            };
+        try
+        {
+            data = await SelectionSets.ExecuteSelectionSetAsync(
+                executionContext,
+                selectionSet,
+                queryType,
+                initialValue,
+                path).ConfigureAwait(false);
         }
+        catch (QueryExecutionException e)
+        {
+            executionContext.AddError(e);
+            data = null;
+        }
+
+        return new ExecutionResult
+        {
+            Errors = executionContext
+                .FieldErrors
+                .Select(context.FormatError)
+                .ToList(),
+            Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/QueryContext.cs b/src/graphql/Execution/QueryContext.cs
index 86e7ea0f0..4d890b44b 100644
--- a/src/graphql/Execution/QueryContext.cs
+++ b/src/graphql/Execution/QueryContext.cs
@@ -4,65 +4,64 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public class QueryContext
 {
-    public class QueryContext
+    public QueryContext(
+        Func<Exception, ExecutionError> formatError,
+        ExecutableDocument document,
+        OperationDefinition operation,
+        ISchema schema,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        object initialValue,
+        ExtensionsRunner extensionsRunner)
     {
-        public QueryContext(
-            Func<Exception, ExecutionError> formatError,
-            ExecutableDocument document,
-            OperationDefinition operation,
-            ISchema schema,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            object initialValue,
-            ExtensionsRunner extensionsRunner)
-        {
-            FormatError = formatError ?? throw new ArgumentNullException(nameof(formatError));
-            Document = document ?? throw new ArgumentNullException(nameof(document));
-            OperationDefinition = operation ?? throw new ArgumentNullException(nameof(operation));
-            Schema = schema ?? throw new ArgumentNullException(nameof(schema));
-            CoercedVariableValues = coercedVariableValues;
-            InitialValue = initialValue;
-            ExtensionsRunner = extensionsRunner;
-        }
+        FormatError = formatError ?? throw new ArgumentNullException(nameof(formatError));
+        Document = document ?? throw new ArgumentNullException(nameof(document));
+        OperationDefinition = operation ?? throw new ArgumentNullException(nameof(operation));
+        Schema = schema ?? throw new ArgumentNullException(nameof(schema));
+        CoercedVariableValues = coercedVariableValues;
+        InitialValue = initialValue;
+        ExtensionsRunner = extensionsRunner;
+    }
 
-        public Func<Exception, ExecutionError> FormatError { get; }
+    public IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
 
-        public ExecutableDocument Document { get; }
+    public ExecutableDocument Document { get; }
 
-        public OperationDefinition OperationDefinition { get; }
+    public ExtensionsRunner ExtensionsRunner { get; }
 
-        public ISchema Schema { get; }
+    public Func<Exception, ExecutionError> FormatError { get; }
 
-        public IReadOnlyDictionary<string, object?> CoercedVariableValues { get; }
+    public object InitialValue { get; }
 
-        public object InitialValue { get; }
+    public OperationDefinition OperationDefinition { get; }
 
-        public ExtensionsRunner ExtensionsRunner { get; }
+    public ISchema Schema { get; }
 
-        public void Deconstruct(out ISchema schema, out ExecutableDocument document,
-            out OperationDefinition operation, out object initialValue,
-            out IReadOnlyDictionary<string, object?> coercedVariableValues)
-        {
-            schema = Schema;
-            document = Document;
-            operation = OperationDefinition;
-            initialValue = InitialValue;
-            coercedVariableValues = CoercedVariableValues;
-        }
+    public void Deconstruct(out ISchema schema, out ExecutableDocument document,
+        out OperationDefinition operation, out object initialValue,
+        out IReadOnlyDictionary<string, object?> coercedVariableValues)
+    {
+        schema = Schema;
+        document = Document;
+        operation = OperationDefinition;
+        initialValue = InitialValue;
+        coercedVariableValues = CoercedVariableValues;
+    }
 
-        public IExecutorContext BuildExecutorContext(
-            IExecutionStrategy executionStrategy)
-        {
-            return new ExecutorContext(
-                Schema,
-                Document,
-                ExtensionsRunner,
-                executionStrategy,
-                OperationDefinition,
-                Document.FragmentDefinitions
-                    ?.ToDictionary(f => f.FragmentName.ToString(), f => f),
-                CoercedVariableValues);
-        }
+    public IExecutorContext BuildExecutorContext(
+        IExecutionStrategy executionStrategy)
+    {
+        return new ExecutorContext(
+            Schema,
+            Document,
+            ExtensionsRunner,
+            executionStrategy,
+            OperationDefinition,
+            Document.FragmentDefinitions
+                ?.ToDictionary(f => f.FragmentName.ToString(), f => f),
+            CoercedVariableValues);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/SelectionSets.cs b/src/graphql/Execution/SelectionSets.cs
index a3a3cbb68..39c774d34 100644
--- a/src/graphql/Execution/SelectionSets.cs
+++ b/src/graphql/Execution/SelectionSets.cs
@@ -6,206 +6,205 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class SelectionSets
 {
-    public static class SelectionSets
+    public static async Task<IDictionary<string, object>?> ExecuteSelectionSetAsync(
+        IExecutorContext executorContext,
+        SelectionSet selectionSet,
+        ObjectDefinition objectDefinition,
+        object objectValue,
+        NodePath path)
     {
-        public static async Task<IDictionary<string, object>?> ExecuteSelectionSetAsync(
-            IExecutorContext executorContext,
-            SelectionSet selectionSet,
-            ObjectDefinition objectDefinition,
-            object objectValue,
-            NodePath path)
-        {
-            if (executorContext == null) throw new ArgumentNullException(nameof(executorContext));
-            if (selectionSet == null) throw new ArgumentNullException(nameof(selectionSet));
-            if (path == null) throw new ArgumentNullException(nameof(path));
-
-            var groupedFieldSet = CollectFields(
-                executorContext.Schema,
-                executorContext.Document,
-                objectDefinition,
-                selectionSet,
-                executorContext.CoercedVariableValues);
-
-            var resultMap = await executorContext.Strategy.ExecuteGroupedFieldSetAsync(
-                executorContext,
-                groupedFieldSet,
-                objectDefinition,
-                objectValue,
-                path).ConfigureAwait(false);
-
-            return resultMap;
-        }
+        if (executorContext == null) throw new ArgumentNullException(nameof(executorContext));
+        if (selectionSet == null) throw new ArgumentNullException(nameof(selectionSet));
+        if (path == null) throw new ArgumentNullException(nameof(path));
+
+        var groupedFieldSet = CollectFields(
+            executorContext.Schema,
+            executorContext.Document,
+            objectDefinition,
+            selectionSet,
+            executorContext.CoercedVariableValues);
+
+        var resultMap = await executorContext.Strategy.ExecuteGroupedFieldSetAsync(
+            executorContext,
+            groupedFieldSet,
+            objectDefinition,
+            objectValue,
+            path).ConfigureAwait(false);
+
+        return resultMap;
+    }
 
 
-        public static SelectionSet MergeSelectionSets(IReadOnlyCollection<FieldSelection> fields)
+    public static SelectionSet MergeSelectionSets(IReadOnlyCollection<FieldSelection> fields)
+    {
+        var selectionSet = new List<ISelection>();
+        foreach (var field in fields)
         {
-            var selectionSet = new List<ISelection>();
-            foreach (var field in fields)
-            {
-                var fieldSelectionSet = field.SelectionSet;
-                if (fieldSelectionSet is null || fieldSelectionSet.Count == 0) continue;
-
-                selectionSet.AddRange(fieldSelectionSet);
-            }
+            var fieldSelectionSet = field.SelectionSet;
+            if (fieldSelectionSet is null || fieldSelectionSet.Count == 0) continue;
 
-            return new SelectionSet(selectionSet);
+            selectionSet.AddRange(fieldSelectionSet);
         }
 
-        public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
-            ISchema schema,
-            ExecutableDocument document,
-            ObjectDefinition objectDefinition,
-            SelectionSet selectionSet,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            List<string>? visitedFragments = null)
+        return new SelectionSet(selectionSet);
+    }
+
+    public static IReadOnlyDictionary<string, List<FieldSelection>> CollectFields(
+        ISchema schema,
+        ExecutableDocument document,
+        ObjectDefinition objectDefinition,
+        SelectionSet selectionSet,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        List<string>? visitedFragments = null)
+    {
+        visitedFragments ??= new List<string>();
+
+        var fragments = document.FragmentDefinitions;
+
+        var groupedFields = new Dictionary<string, List<FieldSelection>>();
+        foreach (var selection in selectionSet)
         {
-            visitedFragments ??= new List<string>();
+            var directives = GetDirectives(selection).ToList();
+
+            var skipDirective = directives.FirstOrDefault(d => d.Name == "skip"); //todo: skip to constant
+            if (SkipSelection(skipDirective, coercedVariableValues, schema, objectDefinition, selection))
+                continue;
 
-            var fragments = document.FragmentDefinitions;
+            var includeDirective = directives.FirstOrDefault(d => d.Name == "include"); //todo: include to constant
+            if (!IncludeSelection(includeDirective, coercedVariableValues, schema, objectDefinition, selection))
+                continue;
 
-            var groupedFields = new Dictionary<string, List<FieldSelection>>();
-            foreach (var selection in selectionSet)
+            if (selection is FieldSelection fieldSelection)
             {
-                var directives = GetDirectives(selection).ToList();
+                var name = fieldSelection.AliasOrName;
+                if (!groupedFields.ContainsKey(name))
+                    groupedFields[name] = new List<FieldSelection>();
 
-                var skipDirective = directives.FirstOrDefault(d => d.Name == "skip"); //todo: skip to constant
-                if (SkipSelection(skipDirective, coercedVariableValues, schema, objectDefinition, selection))
-                    continue;
+                groupedFields[name].Add(fieldSelection);
+            }
 
-                var includeDirective = directives.FirstOrDefault(d => d.Name == "include"); //todo: include to constant
-                if (!IncludeSelection(includeDirective, coercedVariableValues, schema, objectDefinition, selection))
-                    continue;
+            if (selection is FragmentSpread fragmentSpread)
+            {
+                var fragmentSpreadName = fragmentSpread.FragmentName;
 
-                if (selection is FieldSelection fieldSelection)
-                {
-                    var name = fieldSelection.AliasOrName;
-                    if (!groupedFields.ContainsKey(name))
-                        groupedFields[name] = new List<FieldSelection>();
+                if (visitedFragments.Contains(fragmentSpreadName)) continue;
 
-                    groupedFields[name].Add(fieldSelection);
-                }
+                visitedFragments.Add(fragmentSpreadName);
 
-                if (selection is FragmentSpread fragmentSpread)
-                {
-                    var fragmentSpreadName = fragmentSpread.FragmentName;
+                var fragment = fragments.SingleOrDefault(f => f.FragmentName == fragmentSpreadName);
 
-                    if (visitedFragments.Contains(fragmentSpreadName)) continue;
+                if (fragment == null)
+                    continue;
 
-                    visitedFragments.Add(fragmentSpreadName);
+                var fragmentTypeAst = fragment.TypeCondition;
+                var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
 
-                    var fragment = fragments.SingleOrDefault(f => f.FragmentName == fragmentSpreadName);
+                if (!DoesFragmentTypeApply(objectDefinition, fragmentType))
+                    continue;
 
-                    if (fragment == null)
-                        continue;
+                var fragmentSelectionSet = fragment.SelectionSet;
+                var fragmentGroupedFieldSet = CollectFields(
+                    schema,
+                    document,
+                    objectDefinition,
+                    fragmentSelectionSet,
+                    coercedVariableValues,
+                    visitedFragments);
 
-                    var fragmentTypeAst = fragment.TypeCondition;
-                    var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
+                foreach (var fragmentGroup in fragmentGroupedFieldSet)
+                {
+                    var responseKey = fragmentGroup.Key;
 
-                    if (!DoesFragmentTypeApply(objectDefinition, fragmentType))
-                        continue;
+                    if (!groupedFields.ContainsKey(responseKey))
+                        groupedFields[responseKey] = new List<FieldSelection>();
 
-                    var fragmentSelectionSet = fragment.SelectionSet;
-                    var fragmentGroupedFieldSet = CollectFields(
-                        schema,
-                        document,
-                        objectDefinition,
-                        fragmentSelectionSet,
-                        coercedVariableValues,
-                        visitedFragments);
+                    groupedFields[responseKey].AddRange(fragmentGroup.Value);
+                }
+            }
 
-                    foreach (var fragmentGroup in fragmentGroupedFieldSet)
-                    {
-                        var responseKey = fragmentGroup.Key;
+            if (selection is InlineFragment inlineFragment)
+            {
+                var fragmentTypeAst = inlineFragment.TypeCondition;
+                var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
 
-                        if (!groupedFields.ContainsKey(responseKey))
-                            groupedFields[responseKey] = new List<FieldSelection>();
+                if (fragmentType != null && !DoesFragmentTypeApply(objectDefinition, fragmentType))
+                    continue;
 
-                        groupedFields[responseKey].AddRange(fragmentGroup.Value);
-                    }
-                }
+                var fragmentSelectionSet = inlineFragment.SelectionSet;
+                var fragmentGroupedFieldSet = CollectFields(
+                    schema,
+                    document,
+                    objectDefinition,
+                    fragmentSelectionSet,
+                    coercedVariableValues,
+                    visitedFragments);
 
-                if (selection is InlineFragment inlineFragment)
+                foreach (var fragmentGroup in fragmentGroupedFieldSet)
                 {
-                    var fragmentTypeAst = inlineFragment.TypeCondition;
-                    var fragmentType = Ast.UnwrapAndResolveType(schema, fragmentTypeAst);
-
-                    if (fragmentType != null && !DoesFragmentTypeApply(objectDefinition, fragmentType))
-                        continue;
-
-                    var fragmentSelectionSet = inlineFragment.SelectionSet;
-                    var fragmentGroupedFieldSet = CollectFields(
-                        schema,
-                        document,
-                        objectDefinition,
-                        fragmentSelectionSet,
-                        coercedVariableValues,
-                        visitedFragments);
-
-                    foreach (var fragmentGroup in fragmentGroupedFieldSet)
-                    {
-                        var responseKey = fragmentGroup.Key;
-
-                        if (!groupedFields.ContainsKey(responseKey))
-                            groupedFields[responseKey] = new List<FieldSelection>();
-
-                        groupedFields[responseKey].AddRange(fragmentGroup.Value);
-                    }
+                    var responseKey = fragmentGroup.Key;
+
+                    if (!groupedFields.ContainsKey(responseKey))
+                        groupedFields[responseKey] = new List<FieldSelection>();
+
+                    groupedFields[responseKey].AddRange(fragmentGroup.Value);
                 }
             }
-
-            return groupedFields;
         }
 
-        private static bool IncludeSelection(
-            Directive? includeDirective,
-            IReadOnlyDictionary<string, object?> coercedVariableValues, 
-            ISchema schema,
-            ObjectDefinition objectDefinition, 
-            object selection)
-        {
-            if (includeDirective?.Arguments == null)
-                return true;
+        return groupedFields;
+    }
 
-            var ifArgument = includeDirective.Arguments.SingleOrDefault(a => a.Name == "if"); //todo: if to constants
-            return GetIfArgumentValue(schema, includeDirective, coercedVariableValues, ifArgument);
-        }
+    private static bool IncludeSelection(
+        Directive? includeDirective,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        ISchema schema,
+        ObjectDefinition objectDefinition,
+        object selection)
+    {
+        if (includeDirective?.Arguments == null)
+            return true;
 
-        private static bool SkipSelection(
-            Directive? skipDirective,
-            IReadOnlyDictionary<string, object?> coercedVariableValues, 
-            ISchema schema,
-            ObjectDefinition objectDefinition, 
-            object selection)
-        {
-            if (skipDirective?.Arguments == null)
-                return false;
+        var ifArgument = includeDirective.Arguments.SingleOrDefault(a => a.Name == "if"); //todo: if to constants
+        return GetIfArgumentValue(schema, includeDirective, coercedVariableValues, ifArgument);
+    }
 
-            var ifArgument = skipDirective.Arguments.SingleOrDefault(a => a.Name == "if"); //todo: if to constants
-            return GetIfArgumentValue(schema, skipDirective, coercedVariableValues, ifArgument);
-        }
+    private static bool SkipSelection(
+        Directive? skipDirective,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        ISchema schema,
+        ObjectDefinition objectDefinition,
+        object selection)
+    {
+        if (skipDirective?.Arguments == null)
+            return false;
 
-        private static bool GetIfArgumentValue(
-            ISchema schema,
-            Directive directive,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            Argument? argument)
-        {
-            if (argument is null)
-                return false;
+        var ifArgument = skipDirective.Arguments.SingleOrDefault(a => a.Name == "if"); //todo: if to constants
+        return GetIfArgumentValue(schema, skipDirective, coercedVariableValues, ifArgument);
+    }
 
-            return Ast.GetIfArgumentValue(directive, coercedVariableValues, argument);
-        }
+    private static bool GetIfArgumentValue(
+        ISchema schema,
+        Directive directive,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        Argument? argument)
+    {
+        if (argument is null)
+            return false;
 
-        private static IEnumerable<Directive> GetDirectives(ISelection selection)
-        {
-            return selection.Directives ?? Language.Nodes.Directives.None;
-        }
+        return Ast.GetIfArgumentValue(directive, coercedVariableValues, argument);
+    }
 
-        private static bool DoesFragmentTypeApply(ObjectDefinition objectDefinition, TypeDefinition fragmentType)
-        {
-            return Ast.DoesFragmentTypeApply(objectDefinition, fragmentType);
-        }
+    private static IEnumerable<Directive> GetDirectives(ISelection selection)
+    {
+        return selection.Directives ?? Language.Nodes.Directives.None;
+    }
+
+    private static bool DoesFragmentTypeApply(ObjectDefinition objectDefinition, TypeDefinition fragmentType)
+    {
+        return Ast.DoesFragmentTypeApply(objectDefinition, fragmentType);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/SerialExecutionStrategy.cs b/src/graphql/Execution/SerialExecutionStrategy.cs
index 0321333e6..2bd1fafae 100644
--- a/src/graphql/Execution/SerialExecutionStrategy.cs
+++ b/src/graphql/Execution/SerialExecutionStrategy.cs
@@ -3,42 +3,41 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public class SerialExecutionStrategy : IExecutionStrategy
 {
-    public class SerialExecutionStrategy : IExecutionStrategy
+    public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
+        IExecutorContext context,
+        IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        NodePath path)
     {
-        public async Task<IDictionary<string, object?>> ExecuteGroupedFieldSetAsync(
-            IExecutorContext context,
-            IReadOnlyDictionary<string, List<FieldSelection>> groupedFieldSet,
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            NodePath path)
+        var responseMap = new Dictionary<string, object?>();
+
+        foreach (var fieldGroup in groupedFieldSet)
         {
-            var responseMap = new Dictionary<string, object?>();
+            var responseKey = fieldGroup.Key;
 
-            foreach (var fieldGroup in groupedFieldSet)
+            try
             {
-                var responseKey = fieldGroup.Key;
+                var result = await FieldGroups.ExecuteFieldGroupAsync(
+                    context,
+                    objectDefinition,
+                    objectValue,
+                    new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key, fieldGroup.Value),
+                    path.Fork()).ConfigureAwait(false);
 
-                try
-                {
-                    var result = await FieldGroups.ExecuteFieldGroupAsync(
-                        context,
-                        objectDefinition,
-                        objectValue,
-                        new KeyValuePair<string, IReadOnlyCollection<FieldSelection>>(fieldGroup.Key, fieldGroup.Value),
-                        path.Fork()).ConfigureAwait(false);
-
-                    responseMap[responseKey] = result;
-                }
-                catch (QueryExecutionException e)
-                {
-                    responseMap[responseKey] = null;
-                    context.AddError(e);
-                }
+                responseMap[responseKey] = result;
+            }
+            catch (QueryExecutionException e)
+            {
+                responseMap[responseKey] = null;
+                context.AddError(e);
             }
-
-            return responseMap;
         }
+
+        return responseMap;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Subscription.cs b/src/graphql/Execution/Subscription.cs
index 3c27506db..4778e8124 100644
--- a/src/graphql/Execution/Subscription.cs
+++ b/src/graphql/Execution/Subscription.cs
@@ -4,173 +4,171 @@
 using System.Threading;
 using System.Threading.Channels;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class Subscription
 {
-    public static class Subscription
+    public static async Task<SubscriptionResult> SubscribeAsync(
+        QueryContext context,
+        CancellationToken cancellationToken)
     {
-        public static async Task<SubscriptionResult> SubscribeAsync(
-            QueryContext context,
-            CancellationToken cancellationToken)
-        {
-            cancellationToken.ThrowIfCancellationRequested();
-
-            var (schema, _, operation, initialValue, coercedVariableValues) = context;
-
-            if (schema.Subscription == null)
-                throw new QueryExecutionException(
-                    "Schema does not support subscriptions. Subscription type is null",
-                    path: new NodePath());
-
-            var executionContext = context.BuildExecutorContext(new ParallelExecutionStrategy());
-
-            try
-            {
-                var sourceStream = await CreateSourceEventStreamAsync(
-                    executionContext,
-                    operation,
-                    coercedVariableValues,
-                    initialValue,
-                    cancellationToken).ConfigureAwait(false);
-
-                var responseStream = MapSourceToResponseEventAsync(
-                    executionContext,
-                    sourceStream,
-                    operation,
-                    coercedVariableValues,
-                    context.FormatError,
-                    cancellationToken);
-
-                return responseStream;
-            }
-            catch (QueryExecutionException e)
-            {
-                executionContext.AddError(e);
-            }
-
-            return new SubscriptionResult(null)
-            {
-                Errors = executionContext
-                    .FieldErrors
-                    .Select(context.FormatError)
-                    .ToList()
-            };
-        }
+        cancellationToken.ThrowIfCancellationRequested();
 
-        public static SubscriptionResult MapSourceToResponseEventAsync(
-            IExecutorContext context,
-            ISubscriberResult subscriberResult,
-            OperationDefinition subscription,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            Func<Exception, ExecutionError> formatError, 
-            CancellationToken cancellationToken)
-        {
-            if (context == null) throw new ArgumentNullException(nameof(context));
-            if (subscriberResult == null) throw new ArgumentNullException(nameof(subscriberResult));
-            if (subscription == null) throw new ArgumentNullException(nameof(subscription));
-            if (coercedVariableValues == null) throw new ArgumentNullException(nameof(coercedVariableValues));
-            if (formatError == null) throw new ArgumentNullException(nameof(formatError));
-
-            var responseStream = Channel.CreateUnbounded<ExecutionResult>();
-            var reader = subscriberResult.Reader;
-
-            // execute event
-            var _ = reader.TransformAndWriteTo(responseStream, item => ExecuteSubscriptionEventAsync(
-                context,
-                subscription,
-                coercedVariableValues,
-                item,
-                formatError));
+        var (schema, _, operation, initialValue, coercedVariableValues) = context;
 
-            return new SubscriptionResult(responseStream);
-        }
+        if (schema.Subscription == null)
+            throw new QueryExecutionException(
+                "Schema does not support subscriptions. Subscription type is null",
+                new NodePath());
+
+        var executionContext = context.BuildExecutorContext(new ParallelExecutionStrategy());
 
-        public static async Task<ISubscriberResult> CreateSourceEventStreamAsync(
-            IExecutorContext context,
-            OperationDefinition subscription,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            object initialValue,
-            CancellationToken cancellationToken)
+        try
         {
-            if (context == null) throw new ArgumentNullException(nameof(context));
-            if (subscription == null) throw new ArgumentNullException(nameof(subscription));
-            if (coercedVariableValues == null) throw new ArgumentNullException(nameof(coercedVariableValues));
-
-            cancellationToken.ThrowIfCancellationRequested();
-
-            var schema = context.Schema;
-            var subscriptionType = schema.Subscription;
-            var groupedFieldSet = SelectionSets.CollectFields(
-                context.Schema,
-                context.Document,
-                subscriptionType,
-                subscription.SelectionSet,
-                coercedVariableValues
-            );
-
-            var fields = groupedFieldSet.Values.First();
-            var fieldName = fields.First().Name;
-            var fieldSelection = fields.First();
-
-            var coercedArgumentValues = ArgumentCoercion.CoerceArgumentValues(
-                schema,
-                subscriptionType,
-                fieldSelection,
-                coercedVariableValues);
-
-            var field = schema.GetField(subscriptionType.Name, fieldName);
-            var path = new NodePath();
-            var resolveContext = new ResolverContext(
-                subscriptionType,
+            var sourceStream = await CreateSourceEventStreamAsync(
+                executionContext,
+                operation,
+                coercedVariableValues,
                 initialValue,
-                field,
-                fieldSelection,
-                fields,
-                coercedArgumentValues,
-                path,
-                context);
+                cancellationToken).ConfigureAwait(false);
 
-            var subscriber = schema.GetSubscriber(subscriptionType.Name, fieldName);
+            var responseStream = MapSourceToResponseEventAsync(
+                executionContext,
+                sourceStream,
+                operation,
+                coercedVariableValues,
+                context.FormatError,
+                cancellationToken);
+
+            return responseStream;
+        }
+        catch (QueryExecutionException e)
+        {
+            executionContext.AddError(e);
+        }
 
-            if (subscriber == null)
-                throw new QueryExecutionException(
-                    $"Could not subscribe. Field '{subscriptionType}:{fieldName}' does not have subscriber",
-                    path);
+        return new SubscriptionResult(null)
+        {
+            Errors = executionContext
+                .FieldErrors
+                .Select(context.FormatError)
+                .ToList()
+        };
+    }
 
-            var subscribeResult = await subscriber(resolveContext, cancellationToken)
-                .ConfigureAwait(false);
+    public static SubscriptionResult MapSourceToResponseEventAsync(
+        IExecutorContext context,
+        ISubscriberResult subscriberResult,
+        OperationDefinition subscription,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        Func<Exception, ExecutionError> formatError,
+        CancellationToken cancellationToken)
+    {
+        if (context == null) throw new ArgumentNullException(nameof(context));
+        if (subscriberResult == null) throw new ArgumentNullException(nameof(subscriberResult));
+        if (subscription == null) throw new ArgumentNullException(nameof(subscription));
+        if (coercedVariableValues == null) throw new ArgumentNullException(nameof(coercedVariableValues));
+        if (formatError == null) throw new ArgumentNullException(nameof(formatError));
+
+        var responseStream = Channel.CreateUnbounded<ExecutionResult>();
+        var reader = subscriberResult.Reader;
+
+        // execute event
+        var _ = reader.TransformAndWriteTo(responseStream, item => ExecuteSubscriptionEventAsync(
+            context,
+            subscription,
+            coercedVariableValues,
+            item,
+            formatError));
+
+        return new SubscriptionResult(responseStream);
+    }
 
-            return subscribeResult;
-        }
+    public static async Task<ISubscriberResult> CreateSourceEventStreamAsync(
+        IExecutorContext context,
+        OperationDefinition subscription,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        object initialValue,
+        CancellationToken cancellationToken)
+    {
+        if (context == null) throw new ArgumentNullException(nameof(context));
+        if (subscription == null) throw new ArgumentNullException(nameof(subscription));
+        if (coercedVariableValues == null) throw new ArgumentNullException(nameof(coercedVariableValues));
+
+        cancellationToken.ThrowIfCancellationRequested();
+
+        var schema = context.Schema;
+        var subscriptionType = schema.Subscription;
+        var groupedFieldSet = SelectionSets.CollectFields(
+            context.Schema,
+            context.Document,
+            subscriptionType,
+            subscription.SelectionSet,
+            coercedVariableValues
+        );
+
+        var fields = groupedFieldSet.Values.First();
+        var fieldName = fields.First().Name;
+        var fieldSelection = fields.First();
+
+        var coercedArgumentValues = ArgumentCoercion.CoerceArgumentValues(
+            schema,
+            subscriptionType,
+            fieldSelection,
+            coercedVariableValues);
+
+        var field = schema.GetField(subscriptionType.Name, fieldName);
+        var path = new NodePath();
+        var resolveContext = new ResolverContext(
+            subscriptionType,
+            initialValue,
+            field,
+            fieldSelection,
+            fields,
+            coercedArgumentValues,
+            path,
+            context);
+
+        var subscriber = schema.GetSubscriber(subscriptionType.Name, fieldName);
+
+        if (subscriber == null)
+            throw new QueryExecutionException(
+                $"Could not subscribe. Field '{subscriptionType}:{fieldName}' does not have subscriber",
+                path);
+
+        var subscribeResult = await subscriber(resolveContext, cancellationToken)
+            .ConfigureAwait(false);
+
+        return subscribeResult;
+    }
 
-        private static async Task<ExecutionResult> ExecuteSubscriptionEventAsync(
-            IExecutorContext context,
-            OperationDefinition subscription,
-            IReadOnlyDictionary<string, object?> coercedVariableValues,
-            object evnt,
-            Func<Exception, ExecutionError> formatError)
+    private static async Task<ExecutionResult> ExecuteSubscriptionEventAsync(
+        IExecutorContext context,
+        OperationDefinition subscription,
+        IReadOnlyDictionary<string, object?> coercedVariableValues,
+        object evnt,
+        Func<Exception, ExecutionError> formatError)
+    {
+        var subscriptionType = context.Schema.Subscription;
+        var selectionSet = subscription.SelectionSet;
+        var path = new NodePath();
+        var data = await SelectionSets.ExecuteSelectionSetAsync(
+            context,
+            selectionSet,
+            subscriptionType,
+            evnt,
+            path).ConfigureAwait(false);
+
+        var result = new ExecutionResult
         {
-            var subscriptionType = context.Schema.Subscription;
-            var selectionSet = subscription.SelectionSet;
-            var path = new NodePath();
-            var data = await SelectionSets.ExecuteSelectionSetAsync(
-                context,
-                selectionSet,
-                subscriptionType,
-                evnt,
-                path).ConfigureAwait(false);
-
-            var result = new ExecutionResult
-            {
-                Errors = context.FieldErrors.Select(formatError).ToList(),
-                Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
-            };
-
-            return result;
-        }
+            Errors = context.FieldErrors.Select(formatError).ToList(),
+            Data = data?.ToDictionary(kv => kv.Key, kv => kv.Value)
+        };
+
+        return result;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Values.cs b/src/graphql/Execution/Values.cs
index bcd27691f..1bfcbff72 100644
--- a/src/graphql/Execution/Values.cs
+++ b/src/graphql/Execution/Values.cs
@@ -7,90 +7,64 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class Values
 {
-    public static class Values
+    public static object? CoerceValue(
+        ISchema schema,
+        object? value,
+        TypeBase valueType)
     {
-        public static object? CoerceValue(
-            ISchema schema,
-            object? value,
-            TypeBase valueType)
+        switch (valueType)
         {
-            switch (valueType)
-            {
-                case NonNullType NonNullType:
-                    return CoerceNonNullTypeValue(
-                        schema,
-                        value,
-                        NonNullType);
-                case ListType list:
-                    return CoerceListValues(
-                        schema,
-                        list.OfType,
-                        value);
-            }
-
-
-            if (valueType is not NamedType namedValueType)
-                throw new ValueCoercionException(
-                    $"Unexpected valueType {valueType}. Cannot coerce value.",
-                    value,
-                    valueType);
-            
-            var valueTypeDefinition = schema.GetRequiredNamedType<TypeDefinition>(namedValueType.Name);
-
-            return valueTypeDefinition switch
-            {
-                ScalarDefinition scalar => CoerceScalarValue(schema, value, scalar),
-                EnumDefinition enumDefinition => CoerceEnumValue(value, enumDefinition),
-                InputObjectDefinition input => CoerceInputValue(
+            case NonNullType NonNullType:
+                return CoerceNonNullTypeValue(
                     schema,
                     value,
-                    input),
-                _ => throw new ArgumentOutOfRangeException($"Type of the '{valueType} is not supported by value coercion")
-            };
+                    NonNullType);
+            case ListType list:
+                return CoerceListValues(
+                    schema,
+                    list.OfType,
+                    value);
         }
 
-        private static IDictionary<string, object?>? CoerceInputValue(
-            ISchema schema,
-            object? value,
-            InputObjectDefinition input)
-        {
-            if (value == null)
-                return null;
-
-            var result = new Dictionary<string, object?>();
-
-            if (value is ObjectValue objectValue)
-                return CoerceInputValueAst(schema, input, objectValue, result);
 
-            if (value is IDictionary<string, object> dictionaryValues)
-            {
-                var fields = schema.GetInputFields(input.Name);
-                foreach (var inputField in fields)
-                {
-                    var fieldName = inputField.Key;
-                    var field = inputField.Value;
-                    var fieldType = field.Type;
+        if (valueType is not NamedType namedValueType)
+            throw new ValueCoercionException(
+                $"Unexpected valueType {valueType}. Cannot coerce value.",
+                value,
+                valueType);
 
-                    object astValue = null;
+        var valueTypeDefinition = schema.GetRequiredNamedType<TypeDefinition>(namedValueType.Name);
 
-                    if (dictionaryValues.ContainsKey(fieldName)) astValue = dictionaryValues[fieldName];
+        return valueTypeDefinition switch
+        {
+            ScalarDefinition scalar => CoerceScalarValue(schema, value, scalar),
+            EnumDefinition enumDefinition => CoerceEnumValue(value, enumDefinition),
+            InputObjectDefinition input => CoerceInputValue(
+                schema,
+                value,
+                input),
+            _ => throw new ArgumentOutOfRangeException($"Type of the '{valueType} is not supported by value coercion")
+        };
+    }
 
-                    var coercedFieldValue = CoerceValue(schema, astValue, fieldType);
+    private static IDictionary<string, object?>? CoerceInputValue(
+        ISchema schema,
+        object? value,
+        InputObjectDefinition input)
+    {
+        if (value == null)
+            return null;
 
-                    result[fieldName] = coercedFieldValue;
-                }
-            }
+        var result = new Dictionary<string, object?>();
 
-            return result;
-        }
+        if (value is ObjectValue objectValue)
+            return CoerceInputValueAst(schema, input, objectValue, result);
 
-        private static IDictionary<string, object?> CoerceInputValueAst(
-            ISchema schema,
-            InputObjectDefinition input,
-            ObjectValue objectValue,
-            Dictionary<string, object?> result)
+        if (value is IDictionary<string, object> dictionaryValues)
         {
             var fields = schema.GetInputFields(input.Name);
             foreach (var inputField in fields)
@@ -99,84 +73,109 @@ public static class Values
                 var field = inputField.Value;
                 var fieldType = field.Type;
 
-                var astValue = objectValue.Fields.SingleOrDefault(v => v.Name == fieldName);
-                var coercedFieldValue = CoerceValue(schema, astValue?.Value, fieldType);
+                object astValue = null;
+
+                if (dictionaryValues.ContainsKey(fieldName)) astValue = dictionaryValues[fieldName];
+
+                var coercedFieldValue = CoerceValue(schema, astValue, fieldType);
 
                 result[fieldName] = coercedFieldValue;
             }
-
-            return result;
         }
 
-        private static object CoerceNonNullTypeValue(
-            ISchema schema,
-            object? value,
-            NonNullType nonNullType)
+        return result;
+    }
+
+    private static IDictionary<string, object?> CoerceInputValueAst(
+        ISchema schema,
+        InputObjectDefinition input,
+        ObjectValue objectValue,
+        Dictionary<string, object?> result)
+    {
+        var fields = schema.GetInputFields(input.Name);
+        foreach (var inputField in fields)
         {
-            var coercedValue = CoerceValue(schema, value, nonNullType.OfType);
-            if (coercedValue == null)
-                throw new ValueCoercionException("Coerced value is null",
-                    value,
-                    nonNullType);
+            var fieldName = inputField.Key;
+            var field = inputField.Value;
+            var fieldType = field.Type;
+
+            var astValue = objectValue.Fields.SingleOrDefault(v => v.Name == fieldName);
+            var coercedFieldValue = CoerceValue(schema, astValue?.Value, fieldType);
 
-            return coercedValue;
+            result[fieldName] = coercedFieldValue;
         }
 
-        private static object? CoerceEnumValue(object? value, EnumDefinition enumType)
-        {
-            if (value is ValueBase astValue)
-                return new EnumConverter(enumType).ParseLiteral(astValue);
+        return result;
+    }
 
-            return new EnumConverter(enumType).ParseValue(value);
-        }
+    private static object CoerceNonNullTypeValue(
+        ISchema schema,
+        object? value,
+        NonNullType nonNullType)
+    {
+        var coercedValue = CoerceValue(schema, value, nonNullType.OfType);
+        if (coercedValue == null)
+            throw new ValueCoercionException("Coerced value is null",
+                value,
+                nonNullType);
 
-        private static object? CoerceScalarValue(
-            ISchema schema,
-            object? value,
-            ScalarDefinition scalarType)
-        {
-            var serializer = schema.GetRequiredValueConverter(scalarType.Name);
+        return coercedValue;
+    }
 
-            if (value is ValueBase astValue)
-                return serializer.ParseLiteral(astValue);
+    private static object? CoerceEnumValue(object? value, EnumDefinition enumType)
+    {
+        if (value is ValueBase astValue)
+            return new EnumConverter(enumType).ParseLiteral(astValue);
 
-            return serializer.ParseValue(value);
-        }
+        return new EnumConverter(enumType).ParseValue(value);
+    }
 
-        private static object? CoerceListValues(
-            ISchema schema,
-            TypeBase listWrappedType,
-            object? value)
-        {
-            if (value == null)
-                return null;
+    private static object? CoerceScalarValue(
+        ISchema schema,
+        object? value,
+        ScalarDefinition scalarType)
+    {
+        var serializer = schema.GetRequiredValueConverter(scalarType.Name);
+
+        if (value is ValueBase astValue)
+            return serializer.ParseLiteral(astValue);
+
+        return serializer.ParseValue(value);
+    }
+
+    private static object? CoerceListValues(
+        ISchema schema,
+        TypeBase listWrappedType,
+        object? value)
+    {
+        if (value == null)
+            return null;
 
-            var coercedListValues = new List<object?>();
-            if (value is ListValue listValue)
+        var coercedListValues = new List<object?>();
+        if (value is ListValue listValue)
+        {
+            foreach (var listValueValue in listValue.Values)
             {
-                foreach (var listValueValue in listValue.Values)
-                {
-                    var coercedValue = CoerceValue(schema, listValueValue,
-                        listWrappedType);
-                    coercedListValues.Add(coercedValue);
-                }
-
-                return coercedListValues;
+                var coercedValue = CoerceValue(schema, listValueValue,
+                    listWrappedType);
+                coercedListValues.Add(coercedValue);
             }
 
-            if (value is IEnumerable values)
-            {
-                foreach (var v in values)
-                {
-                    var coercedValue = CoerceValue(schema, v, listWrappedType);
-                    coercedListValues.Add(coercedValue);
-                }
+            return coercedListValues;
+        }
 
-                return coercedListValues;
+        if (value is IEnumerable values)
+        {
+            foreach (var v in values)
+            {
+                var coercedValue = CoerceValue(schema, v, listWrappedType);
+                coercedListValues.Add(coercedValue);
             }
 
-            coercedListValues.Add(CoerceValue(schema, value, listWrappedType));
-            return coercedListValues.ToArray();
+            return coercedListValues;
         }
+
+        coercedListValues.Add(CoerceValue(schema, value, listWrappedType));
+        return coercedListValues.ToArray();
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Execution/Variables.cs b/src/graphql/Execution/Variables.cs
index 4fa13de4c..ecb9bf419 100644
--- a/src/graphql/Execution/Variables.cs
+++ b/src/graphql/Execution/Variables.cs
@@ -2,62 +2,62 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Execution
+namespace Tanka.GraphQL.Execution;
+
+public static class Variables
 {
-    public static class Variables
+    public static IReadOnlyDictionary<string, object?> CoerceVariableValues(
+        ISchema schema,
+        OperationDefinition operation,
+        Dictionary<string, object> variableValues)
     {
-        public static IReadOnlyDictionary<string, object?> CoerceVariableValues(
-            ISchema schema,
-            OperationDefinition operation, 
-            Dictionary<string, object> variableValues)
+        var coercedValues = new Dictionary<string, object?>();
+        var variableDefinitions = operation.VariableDefinitions;
+
+        if (variableDefinitions == null)
+            return coercedValues;
+
+        foreach (var variableDefinition in variableDefinitions)
         {
-            var coercedValues = new Dictionary<string, object?>();
-            var variableDefinitions = operation.VariableDefinitions;
+            var variableName = variableDefinition.Variable.Name;
+            var variableType = variableDefinition.Type;
 
-            if (variableDefinitions == null)
-                return coercedValues;
+            //  should be assert?
+            if (!TypeIs.IsInputType(schema, variableType))
+                throw new VariableException("Variable is not of input type", variableName, variableType);
 
-            foreach (var variableDefinition in variableDefinitions)
-            {
-                var variableName = variableDefinition.Variable.Name;
-                var variableType = variableDefinition.Type;
+            var defaultValue = variableDefinition.DefaultValue?.Value;
+            var hasValue = variableValues.ContainsKey(variableName);
+            var value = hasValue ? variableValues[variableName] : null;
 
-                //  should be assert?
-                if (!TypeIs.IsInputType(schema, variableType))
-                    throw new VariableException($"Variable is not of input type", variableName, variableType);
+            if (!hasValue && defaultValue != null)
+            {
+                coercedValues[variableName] = Values.CoerceValue(
+                    schema,
+                    defaultValue,
+                    variableType);
+                ;
+            }
 
-                var defaultValue = variableDefinition.DefaultValue?.Value;
-                var hasValue = variableValues.ContainsKey(variableName);
-                var value = hasValue ? variableValues[variableName]: null;
+            if (variableType is NonNullType
+                && (!hasValue || value == null))
+                throw new ValueCoercionException(
+                    $"Variable {variableName} type is non-nullable but value is null or not set",
+                    value,
+                    variableType);
 
-                if (!hasValue && defaultValue != null)
-                {
+            if (hasValue)
+            {
+                if (value == null)
+                    coercedValues[variableName] = null;
+                else
                     coercedValues[variableName] = Values.CoerceValue(
                         schema,
-                        defaultValue,
-                        variableType);;
-                }
-
-                if (variableType is NonNullType
-                    && (!hasValue || value == null))
-                    throw new ValueCoercionException(
-                        $"Variable {variableName} type is non-nullable but value is null or not set",
                         value,
                         variableType);
-
-                if (hasValue)
-                {
-                    if (value == null)
-                        coercedValues[variableName] = null;
-                    else
-                        coercedValues[variableName] = Values.CoerceValue(
-                            schema,
-                            value,
-                            variableType);
-                }
             }
-
-            return coercedValues;
         }
+
+        return coercedValues;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExecutionError.cs b/src/graphql/ExecutionError.cs
index d81952d6d..614e25042 100644
--- a/src/graphql/ExecutionError.cs
+++ b/src/graphql/ExecutionError.cs
@@ -1,29 +1,23 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
-{
-    public class ExecutionError
-    {
-        public ExecutionError()
-        {
-            // required by System.Text.Json deserialization
-        }
+namespace Tanka.GraphQL;
 
-        public string Message { get; set; }
+public class ExecutionError
+{
+    public Dictionary<string, object> Extensions { get; set; }
 
-        public List<Location>? Locations { get; set; }
+    public List<Location>? Locations { get; set; }
 
-        public List<object> Path { get; set; }
+    public string Message { get; set; }
 
-        public Dictionary<string, object> Extensions { get; set; }
+    public List<object> Path { get; set; }
 
-        public void Extend(string key, object value)
-        {
-            if (Extensions == null)
-                Extensions = new Dictionary<string, object>();
+    public void Extend(string key, object value)
+    {
+        if (Extensions == null)
+            Extensions = new Dictionary<string, object>();
 
-            Extensions[key] = value;
-        }
+        Extensions[key] = value;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExecutionOptions.cs b/src/graphql/ExecutionOptions.cs
index 7e23b75e1..59dafbc12 100644
--- a/src/graphql/ExecutionOptions.cs
+++ b/src/graphql/ExecutionOptions.cs
@@ -2,129 +2,131 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
-
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+/// <summary>
+///     Execution options
+/// </summary>
+public class ExecutionOptions
 {
+    public ExecutionOptions()
+    {
+        FormatError = exception => DefaultFormatError(this, exception);
+        Validate = (schema, document, variableValues) =>
+            DefaultValidate(ExecutionRules.All, schema, document, variableValues);
+    }
+
+    /// <summary>
+    ///     Query, mutation or subscription
+    /// </summary>
+    public ExecutableDocument Document { get; set; }
+
+    /// <summary>
+    ///     Execution extensions
+    /// </summary>
+    public ICollection<IExecutorExtension> Extensions { get; set; } = new List<IExecutorExtension>();
+
+    public IExtensionsRunnerFactory ExtensionsRunnerFactory { get; set; } = new ExtensionsRunnerFactory();
+
     /// <summary>
-    ///     Execution options
+    ///     Function for formatting <see cref="QueryExecutionException" /> into <see cref="ExecutionError" />/>
     /// </summary>
-    public class ExecutionOptions
+    public Func<Exception, ExecutionError> FormatError { get; set; }
+
+    public bool IncludeExceptionDetails { get; set; } = false;
+
+    public object InitialValue { get; set; }
+
+    public ILoggerFactory LoggerFactory { get; set; } = new NullLoggerFactory();
+
+    /// <summary>
+    ///     Optional operation name
+    /// </summary>
+    public string OperationName { get; set; }
+
+    /// <summary>
+    ///     Schema to execute against
+    /// </summary>
+    public ISchema Schema { get; set; }
+
+    /// <summary>
+    ///     Query validator function
+    /// </summary>
+    public Func<ISchema, ExecutableDocument, IReadOnlyDictionary<string, object>, ValueTask<ValidationResult>>? Validate
     {
-        public ExecutionOptions()
-        {
-            FormatError = exception => DefaultFormatError(this, exception);
-            Validate = (schema, document, variableValues) =>
-                DefaultValidate(ExecutionRules.All, schema, document, variableValues);
-        }
-
-        /// <summary>
-        ///     Function for formatting <see cref="QueryExecutionException" /> into <see cref="ExecutionError" />/>
-        /// </summary>
-        public Func<Exception, ExecutionError> FormatError { get; set; }
-
-        public bool IncludeExceptionDetails { get; set; } = false;
-
-        /// <summary>
-        ///     Query validator function
-        /// </summary>
-        public Func<ISchema, ExecutableDocument, IReadOnlyDictionary<string, object>, ValueTask<ValidationResult>>? Validate { get; set; }
-
-        /// <summary>
-        ///     Schema to execute against
-        /// </summary>
-        public ISchema Schema { get; set; }
-
-        /// <summary>
-        ///     Query, mutation or subscription
-        /// </summary>
-        public ExecutableDocument Document { get; set; }
-
-        /// <summary>
-        ///     Optional operation name
-        /// </summary>
-        public string OperationName { get; set; }
-
-        /// <summary>
-        ///     Variables values
-        /// </summary>
-        public Dictionary<string, object> VariableValues { get; set; }
-
-        public object InitialValue { get; set; }
-
-        public ILoggerFactory LoggerFactory { get; set; } = new NullLoggerFactory();
-
-        /// <summary>
-        ///     Execution extensions
-        /// </summary>
-        public ICollection<IExecutorExtension> Extensions { get; set; } = new List<IExecutorExtension>();
-
-        public IExtensionsRunnerFactory ExtensionsRunnerFactory { get; set; } = new ExtensionsRunnerFactory();
-
-        public static ValueTask<ValidationResult> DefaultValidate(
-            IEnumerable<CombineRule> rules,
-            ISchema schema,
-            ExecutableDocument document,
-            IReadOnlyDictionary<string, object?>? variableValues = null)
-        {
-            var result = Validator.Validate(
-                rules,
-                schema,
-                document,
-                variableValues);
+        get;
+        set;
+    }
 
-            return new ValueTask<ValidationResult>(result);
-        }
+    /// <summary>
+    ///     Variables values
+    /// </summary>
+    public Dictionary<string, object> VariableValues { get; set; }
+
+    public static ValueTask<ValidationResult> DefaultValidate(
+        IEnumerable<CombineRule> rules,
+        ISchema schema,
+        ExecutableDocument document,
+        IReadOnlyDictionary<string, object?>? variableValues = null)
+    {
+        var result = Validator.Validate(
+            rules,
+            schema,
+            document,
+            variableValues);
+
+        return new ValueTask<ValidationResult>(result);
+    }
 
-        public static ExecutionError DefaultFormatError(ExecutionOptions options, Exception exception)
+    public static ExecutionError DefaultFormatError(ExecutionOptions options, Exception exception)
+    {
+        var rootCause = exception.GetBaseException();
+        var message = rootCause.Message;
+        var error = new ExecutionError
         {
-            var rootCause = exception.GetBaseException();
-            var message = rootCause.Message;
-            var error = new ExecutionError()
-            {
-                Message = message
-            };
+            Message = message
+        };
 
-            EnrichWithErrorCode(error, rootCause);
+        EnrichWithErrorCode(error, rootCause);
 
-            if (options.IncludeExceptionDetails)
-                EnrichWithStackTrace(error, rootCause);
+        if (options.IncludeExceptionDetails)
+            EnrichWithStackTrace(error, rootCause);
 
-            if (!(exception is QueryExecutionException graphQLError))
-                return error;
+        if (!(exception is QueryExecutionException graphQLError))
+            return error;
 
-            error.Locations = graphQLError.Nodes?
-                .Where(n => !n.Location.Equals(default(Location)))
-                .Select(n => n.Location.Value)
-                .ToList();
-            
-            error.Path = graphQLError.Path?.Segments.ToList();
+        error.Locations = graphQLError.Nodes?
+            .Where(n => !n.Location.Equals(default(Location)))
+            .Select(n => n.Location.Value)
+            .ToList();
 
-            if (graphQLError.Extensions != null)
-                foreach (var extension in graphQLError.Extensions)
-                    error.Extend(extension.Key, extension.Value);
+        error.Path = graphQLError.Path?.Segments.ToList();
 
-            return error;
-        }
+        if (graphQLError.Extensions != null)
+            foreach (var extension in graphQLError.Extensions)
+                error.Extend(extension.Key, extension.Value);
 
-        public static void EnrichWithErrorCode(ExecutionError error, Exception rootCause)
-        {
-            var code = rootCause.GetType().Name;
+        return error;
+    }
 
-            if (code != "Exception")
-                code = code.Replace("Exception", string.Empty);
+    public static void EnrichWithErrorCode(ExecutionError error, Exception rootCause)
+    {
+        var code = rootCause.GetType().Name;
 
-            error.Extend("code", code.ToUpperInvariant());
-        }
+        if (code != "Exception")
+            code = code.Replace("Exception", string.Empty);
 
-        public static void EnrichWithStackTrace(ExecutionError error, Exception exception)
-        {
-            error.Extend("stacktrace", exception.ToString());
-        }
+        error.Extend("code", code.ToUpperInvariant());
+    }
+
+    public static void EnrichWithStackTrace(ExecutionError error, Exception exception)
+    {
+        error.Extend("stacktrace", exception.ToString());
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExecutionResult.cs b/src/graphql/ExecutionResult.cs
index be6a83083..267cc870a 100644
--- a/src/graphql/ExecutionResult.cs
+++ b/src/graphql/ExecutionResult.cs
@@ -1,62 +1,61 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+/// <summary>
+///     Result of query, mutation or value of one value in the
+///     <see cref="SubscriptionResult" /> stream
+/// </summary>
+public class ExecutionResult : IExecutionResult
 {
-    /// <summary>
-    ///     Result of query, mutation or value of one value in the
-    ///     <see cref="SubscriptionResult" /> stream
-    /// </summary>
-    public class ExecutionResult : IExecutionResult
-    {
-        private Dictionary<string, object>? _data;
-        private List<ExecutionError>? _errors;
-        private Dictionary<string, object>? _extensions;
+    private Dictionary<string, object>? _data;
+    private List<ExecutionError>? _errors;
+    private Dictionary<string, object>? _extensions;
 
-        public Dictionary<string, object>? Data
+    public Dictionary<string, object>? Data
+    {
+        get => _data;
+        set
         {
-            get => _data;
-            set
+            if (value != null && !value.Any())
             {
-                if (value != null && !value.Any())
-                {
-                    _data = null;
-                    return;
-                }
-
-                _data = value;
+                _data = null;
+                return;
             }
+
+            _data = value;
         }
+    }
 
-        public Dictionary<string, object>? Extensions
+    public Dictionary<string, object>? Extensions
+    {
+        get => _extensions;
+        set
         {
-            get => _extensions;
-            set
+            if (value != null && !value.Any())
             {
-                if (value != null && !value.Any())
-                {
-                    _extensions = null;
-                    return;
-                }
-
-                _extensions = value;
+                _extensions = null;
+                return;
             }
+
+            _extensions = value;
         }
+    }
 
-        public List<ExecutionError>? Errors
+    public List<ExecutionError>? Errors
+    {
+        get => _errors;
+        set
         {
-            get => _errors;
-            set
-            {
-                if (value != null)
-                    if (!value.Any())
-                    {
-                        _errors = null;
-                        return;
-                    }
-
-                _errors = value;
-            }
+            if (value != null)
+                if (!value.Any())
+                {
+                    _errors = null;
+                    return;
+                }
+
+            _errors = value;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExecutionResultExtensions.cs b/src/graphql/ExecutionResultExtensions.cs
index 639147635..8e1226b4a 100644
--- a/src/graphql/ExecutionResultExtensions.cs
+++ b/src/graphql/ExecutionResultExtensions.cs
@@ -1,68 +1,67 @@
 using System.Collections;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public static class ExecutionResultExtensions
 {
-    public static class ExecutionResultExtensions
+    public static void AddExtension(this IExecutionResult result, string key, object value)
     {
-        public static void AddExtension(this IExecutionResult result, string key, object value)
+        if (result.Extensions == null)
         {
-            if (result.Extensions == null)
+            result.Extensions = new Dictionary<string, object>
             {
-                result.Extensions = new Dictionary<string, object>
-                {
-                    {key, value}
-                };
-                return;
-            }
-
-            result.Extensions[key] = value;
+                { key, value }
+            };
+            return;
         }
 
-        public static object Select(this ExecutionResult er, params object[] path)
+        result.Extensions[key] = value;
+    }
+
+    public static object Select(this ExecutionResult er, params object[] path)
+    {
+        var currentObject = er.Data;
+        object result = null;
+        foreach (var segment in path)
         {
-            var currentObject = er.Data;
-            object result = null;
-            foreach (var segment in path)
+            if (segment is string stringSegment)
             {
-                if (segment is string stringSegment)
-                {
-                    if (currentObject == null)
-                        return null;
+                if (currentObject == null)
+                    return null;
 
-                    if (currentObject.ContainsKey(stringSegment))
-                        result = currentObject[stringSegment];
-                    else
-                        result = null;
-                }
+                if (currentObject.ContainsKey(stringSegment))
+                    result = currentObject[stringSegment];
+                else
+                    result = null;
+            }
 
-                if (segment is int intSegment)
+            if (segment is int intSegment)
+            {
+                if (result is IEnumerable enumerable)
                 {
-                    if (result is IEnumerable enumerable)
+                    var count = 0;
+                    foreach (var elem in enumerable)
                     {
-                        var count = 0;
-                        foreach (var elem in enumerable)
+                        if (count == intSegment)
                         {
-                            if (count == intSegment)
-                            {
-                                result = elem;
-                                break;
-                            }
-
-                            count++;
+                            result = elem;
+                            break;
                         }
-                    }
-                    else
-                    {
-                        result = null;
+
+                        count++;
                     }
                 }
-
-                if (result is Dictionary<string, object> child) 
-                    currentObject = child;
+                else
+                {
+                    result = null;
+                }
             }
 
-            return result;
+            if (result is Dictionary<string, object> child)
+                currentObject = child;
         }
+
+        return result;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Executor.BuildQueryContext.cs b/src/graphql/Executor.BuildQueryContext.cs
index 6ea759529..9ad44082e 100644
--- a/src/graphql/Executor.BuildQueryContext.cs
+++ b/src/graphql/Executor.BuildQueryContext.cs
@@ -4,52 +4,51 @@
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public static partial class Executor
 {
-    public static partial class Executor
+    public static async Task<(QueryContext queryContext, ValidationResult validationResult)>
+        BuildQueryContextAsync(
+            ExecutionOptions options,
+            ExtensionsRunner extensionsRunner,
+            ILogger logger)
     {
-        public static async Task<(QueryContext queryContext, ValidationResult validationResult)>
-            BuildQueryContextAsync(
-                ExecutionOptions options,
-                ExtensionsRunner extensionsRunner,
-                ILogger logger)
-        {
-            await extensionsRunner.BeginParseDocumentAsync();
-            var document = options.Document;
-            await extensionsRunner.EndParseDocumentAsync(document);
+        await extensionsRunner.BeginParseDocumentAsync();
+        var document = options.Document;
+        await extensionsRunner.EndParseDocumentAsync(document);
 
-            var operation = Operations.GetOperation(document, options.OperationName);
-            logger.Operation(operation);
+        var operation = Operations.GetOperation(document, options.OperationName);
+        logger.Operation(operation);
 
-            var coercedVariableValues = Variables.CoerceVariableValues(
-                options.Schema,
-                operation,
-                options.VariableValues);
+        var coercedVariableValues = Variables.CoerceVariableValues(
+            options.Schema,
+            operation,
+            options.VariableValues);
 
-            var queryContext = new QueryContext(
-                options.FormatError,
-                document,
-                operation,
+        var queryContext = new QueryContext(
+            options.FormatError,
+            document,
+            operation,
+            options.Schema,
+            coercedVariableValues,
+            options.InitialValue,
+            extensionsRunner);
+
+        logger.Validate(options.Validate != null);
+        var validationResult = ValidationResult.Success;
+        if (options.Validate != null)
+        {
+            await extensionsRunner.BeginValidationAsync();
+            validationResult = await options.Validate(
                 options.Schema,
-                coercedVariableValues,
-                options.InitialValue,
-                extensionsRunner);
-
-            logger.Validate(options.Validate != null);
-            var validationResult = ValidationResult.Success;
-            if (options.Validate != null)
-            {
-                await extensionsRunner.BeginValidationAsync();
-                validationResult = await options.Validate(
-                    options.Schema,
-                    document,
-                    coercedVariableValues);
-
-                logger.ValidationResult(validationResult);
-                await extensionsRunner.EndValidationAsync(validationResult);
-            }
-
-            return (queryContext, validationResult);
+                document,
+                coercedVariableValues);
+
+            logger.ValidationResult(validationResult);
+            await extensionsRunner.EndValidationAsync(validationResult);
         }
+
+        return (queryContext, validationResult);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Executor.Execute.cs b/src/graphql/Executor.Execute.cs
index c007c7b54..208f18555 100644
--- a/src/graphql/Executor.Execute.cs
+++ b/src/graphql/Executor.Execute.cs
@@ -2,70 +2,68 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+/// <summary>
+///     Execute queries, mutations and subscriptions
+/// </summary>
+public static partial class Executor
 {
     /// <summary>
-    ///     Execute queries, mutations and subscriptions
+    ///     Execute query or mutation
     /// </summary>
-    public static partial class Executor
+    /// <param name="options"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    public static async Task<ExecutionResult> ExecuteAsync(
+        ExecutionOptions options,
+        CancellationToken cancellationToken = default)
     {
-        /// <summary>
-        ///     Execute query or mutation
-        /// </summary>
-        /// <param name="options"></param>
-        /// <param name="cancellationToken"></param>
-        /// <returns></returns>
-        public static async Task<ExecutionResult> ExecuteAsync(
-            ExecutionOptions options,
-            CancellationToken cancellationToken = default)
-        {
-            cancellationToken.ThrowIfCancellationRequested();
-            var extensionsRunner = await options.ExtensionsRunnerFactory.BeginScope(options);
-            var logger = options.LoggerFactory.CreateLogger(typeof(Executor).FullName);
-
-            using (logger.Begin(options.OperationName))
-            {
-                var (queryContext, validationResult) = await BuildQueryContextAsync(
-                    options,
-                    extensionsRunner,
-                    logger);
+        cancellationToken.ThrowIfCancellationRequested();
+        var extensionsRunner = await options.ExtensionsRunnerFactory.BeginScope(options);
+        var logger = options.LoggerFactory.CreateLogger(typeof(Executor).FullName);
 
-                if (!validationResult.IsValid)
-                    return new ExecutionResult
-                    {
-                        Errors = validationResult.Errors.Select(e => e.ToError())
-                            .ToList(),
-                        Extensions = validationResult.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
-                    };
+        using (logger.Begin(options.OperationName))
+        {
+            var (queryContext, validationResult) = await BuildQueryContextAsync(
+                options,
+                extensionsRunner,
+                logger);
 
-                ExecutionResult executionResult;
-                switch (queryContext.OperationDefinition.Operation)
+            if (!validationResult.IsValid)
+                return new ExecutionResult
                 {
-                    case OperationType.Query:
-                        executionResult = await Query.ExecuteQueryAsync(queryContext).ConfigureAwait(false);
-                        break;
-                    case OperationType.Mutation:
-                        executionResult = await Mutation.ExecuteMutationAsync(queryContext).ConfigureAwait(false);
-                        break;
-                    case OperationType.Subscription:
-                        throw new InvalidOperationException($"Use {nameof(SubscribeAsync)}");
-                    default:
-                        throw new InvalidOperationException(
-                            $"Operation type {queryContext.OperationDefinition.Operation} not supported.");
-                }
-
-                if (validationResult.Extensions != null)
-                    foreach (var validationExtension in validationResult.Extensions)
-                        executionResult.AddExtension(validationExtension.Key, validationExtension.Value);
+                    Errors = validationResult.Errors.Select(e => e.ToError())
+                        .ToList(),
+                    Extensions = validationResult.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
+                };
 
-                logger.ExecutionResult(executionResult);
-                await extensionsRunner.EndExecuteAsync(executionResult);
-                return executionResult;
+            ExecutionResult executionResult;
+            switch (queryContext.OperationDefinition.Operation)
+            {
+                case OperationType.Query:
+                    executionResult = await Query.ExecuteQueryAsync(queryContext).ConfigureAwait(false);
+                    break;
+                case OperationType.Mutation:
+                    executionResult = await Mutation.ExecuteMutationAsync(queryContext).ConfigureAwait(false);
+                    break;
+                case OperationType.Subscription:
+                    throw new InvalidOperationException($"Use {nameof(SubscribeAsync)}");
+                default:
+                    throw new InvalidOperationException(
+                        $"Operation type {queryContext.OperationDefinition.Operation} not supported.");
             }
+
+            if (validationResult.Extensions != null)
+                foreach (var validationExtension in validationResult.Extensions)
+                    executionResult.AddExtension(validationExtension.Key, validationExtension.Value);
+
+            logger.ExecutionResult(executionResult);
+            await extensionsRunner.EndExecuteAsync(executionResult);
+            return executionResult;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Executor.Subscribe.cs b/src/graphql/Executor.Subscribe.cs
index 0255170e9..6c7741297 100644
--- a/src/graphql/Executor.Subscribe.cs
+++ b/src/graphql/Executor.Subscribe.cs
@@ -2,67 +2,65 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public static partial class Executor
 {
-    public static partial class Executor
+    /// <summary>
+    ///     Execute subscription
+    /// </summary>
+    /// <param name="options"></param>
+    /// <param name="unsubscribe">Unsubscribe</param>
+    /// <returns></returns>
+    public static async Task<SubscriptionResult> SubscribeAsync(
+        ExecutionOptions options,
+        CancellationToken unsubscribe)
     {
-        /// <summary>
-        ///     Execute subscription
-        /// </summary>
-        /// <param name="options"></param>
-        /// <param name="unsubscribe">Unsubscribe</param>
-        /// <returns></returns>
-        public static async Task<SubscriptionResult> SubscribeAsync(
-            ExecutionOptions options,
-            CancellationToken unsubscribe)
-        {
-            if (!unsubscribe.CanBeCanceled)
-                throw new InvalidOperationException("Unsubscribe token must be cancelable");
+        if (!unsubscribe.CanBeCanceled)
+            throw new InvalidOperationException("Unsubscribe token must be cancelable");
 
-            var extensions = await options.ExtensionsRunnerFactory.BeginScope(options);
+        var extensions = await options.ExtensionsRunnerFactory.BeginScope(options);
 
-            var logger = options.LoggerFactory.CreateLogger(typeof(Executor).FullName);
-
-            using (logger.Begin(options.OperationName))
-            {
-                var (queryContext, validationResult) = await BuildQueryContextAsync(
-                    options,
-                    extensions,
-                    logger);
+        var logger = options.LoggerFactory.CreateLogger(typeof(Executor).FullName);
 
-                if (!validationResult.IsValid)
-                    return new SubscriptionResult
-                    {
-                        Errors = validationResult.Errors.Select(e => e.ToError())
-                            .ToList(),
-                        Extensions = validationResult.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
-                    };
+        using (logger.Begin(options.OperationName))
+        {
+            var (queryContext, validationResult) = await BuildQueryContextAsync(
+                options,
+                extensions,
+                logger);
 
-                SubscriptionResult subscriptionResult;
-                switch (queryContext.OperationDefinition.Operation)
+            if (!validationResult.IsValid)
+                return new SubscriptionResult
                 {
-                    case OperationType.Subscription:
-                        subscriptionResult = await Subscription.SubscribeAsync(
-                            queryContext,
-                            unsubscribe).ConfigureAwait(false);
-                        break;
-                    default:
-                        throw new InvalidOperationException(
-                            $"Operation type {queryContext.OperationDefinition.Operation} not supported. Did you mean to use {nameof(ExecuteAsync)}?");
-                }
-
-                //todo: this looks ugly
-                if (validationResult.Extensions != null)
-                    foreach (var validationExtension in validationResult.Extensions)
-                        subscriptionResult.AddExtension(validationExtension.Key, validationExtension.Value);
+                    Errors = validationResult.Errors.Select(e => e.ToError())
+                        .ToList(),
+                    Extensions = validationResult.Extensions.ToDictionary(kv => kv.Key, kv => kv.Value)
+                };
 
-                logger.ExecutionResult(subscriptionResult);
-                return subscriptionResult;
+            SubscriptionResult subscriptionResult;
+            switch (queryContext.OperationDefinition.Operation)
+            {
+                case OperationType.Subscription:
+                    subscriptionResult = await Subscription.SubscribeAsync(
+                        queryContext,
+                        unsubscribe).ConfigureAwait(false);
+                    break;
+                default:
+                    throw new InvalidOperationException(
+                        $"Operation type {queryContext.OperationDefinition.Operation} not supported. Did you mean to use {nameof(ExecuteAsync)}?");
             }
+
+            //todo: this looks ugly
+            if (validationResult.Extensions != null)
+                foreach (var validationExtension in validationResult.Extensions)
+                    subscriptionResult.AddExtension(validationExtension.Key, validationExtension.Value);
+
+            logger.ExecutionResult(subscriptionResult);
+            return subscriptionResult;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Extensions/Analysis/Cost.cs b/src/graphql/Extensions/Analysis/Cost.cs
index 5a5d51238..511e62e85 100644
--- a/src/graphql/Extensions/Analysis/Cost.cs
+++ b/src/graphql/Extensions/Analysis/Cost.cs
@@ -44,19 +44,16 @@ public static CombineRule MaxCost(
 
                 if (field is not null)
                 {
-                    int complexity = (int)defaultFieldComplexity;
+                    var complexity = (int)defaultFieldComplexity;
 
                     if (field.TryGetDirective("cost", out var costDirective))
                     {
                         if (costDirective.TryGetArgument("complexity", out var complexityArg))
-                        {
                             complexity = (int?)Values.CoerceValue(context.Schema, complexityArg?.Value, "Int!") ?? 0;
-                        }
 
                         costDirective.TryGetArgument("multipliers", out var multipliersArg);
                         if (Values.CoerceValue(context.Schema, multipliersArg?.Value, "[String!]") is
                             IEnumerable<object> multipliers)
-                        {
                             foreach (var multiplier in multipliers.Select(o => o.ToString()))
                             {
                                 var multiplierName = multiplier;
@@ -80,7 +77,6 @@ public static CombineRule MaxCost(
 
                                 complexity *= multiplierValue;
                             }
-                        }
                     }
 
                     cost += (uint)complexity;
diff --git a/src/graphql/Extensions/ExtensionsImportProvider.cs b/src/graphql/Extensions/ExtensionsImportProvider.cs
index 87da7ac9b..87d42097c 100644
--- a/src/graphql/Extensions/ExtensionsImportProvider.cs
+++ b/src/graphql/Extensions/ExtensionsImportProvider.cs
@@ -1,40 +1,38 @@
 using System.Collections.Generic;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Extensions.Analysis;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Extensions
-{
-    public class ExtensionsImportProvider : IImportProvider
-    {
-        private static readonly Regex _match = new Regex(@"tanka:\/\/(?<extension>\w.+)");
+namespace Tanka.GraphQL.Extensions;
 
-        private static readonly Dictionary<string, TypeSystemDocument> _extensions =
-            new Dictionary<string, TypeSystemDocument>
-            {
-                ["cost-analysis"] = CostAnalyzer.CostDirectiveAst
-            };
+public class ExtensionsImportProvider : IImportProvider
+{
+    private static readonly Regex _match = new(@"tanka:\/\/(?<extension>\w.+)");
 
-        public bool CanImport(string path, string[]? types)
+    private static readonly Dictionary<string, TypeSystemDocument> _extensions =
+        new()
         {
-            var match = _match.Match(path);
+            ["cost-analysis"] = CostAnalyzer.CostDirectiveAst
+        };
 
-            if (!match.Success)
-                return false;
+    public bool CanImport(string path, string[]? types)
+    {
+        var match = _match.Match(path);
 
-            var extension = match.Groups["extension"].Value;
-            return _extensions.ContainsKey(extension);
-        }
+        if (!match.Success)
+            return false;
 
-        public ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
-        {
-            var match = _match.Match(path);
+        var extension = match.Groups["extension"].Value;
+        return _extensions.ContainsKey(extension);
+    }
+
+    public ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
+    {
+        var match = _match.Match(path);
 
-            var extension = match.Groups["extension"].Value;
-            return new ValueTask<TypeSystemDocument>(_extensions[extension]);
-        }
+        var extension = match.Groups["extension"].Value;
+        return new ValueTask<TypeSystemDocument>(_extensions[extension]);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExtensionsRunner.cs b/src/graphql/ExtensionsRunner.cs
index 5e891e662..5b83227b7 100644
--- a/src/graphql/ExtensionsRunner.cs
+++ b/src/graphql/ExtensionsRunner.cs
@@ -6,84 +6,83 @@
 using Tanka.GraphQL.Validation;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class ExtensionsRunner
 {
-    public class ExtensionsRunner
-    {
-        private readonly List<IExtensionScope> _scopes = new();
-        private readonly Dictionary<Type, IExtensionScope> _scopesDictionary = new();
+    private readonly List<IExtensionScope> _scopes = new();
+    private readonly Dictionary<Type, IExtensionScope> _scopesDictionary = new();
 
-        public ExtensionsRunner(IReadOnlyList<IExtensionScope> extensions)
-        {
-            _scopes.AddRange(extensions);
-            foreach (var extensionScope in extensions)
-                _scopesDictionary.Add(extensionScope.GetType(), extensionScope);
-        }
+    public ExtensionsRunner(IReadOnlyList<IExtensionScope> extensions)
+    {
+        _scopes.AddRange(extensions);
+        foreach (var extensionScope in extensions)
+            _scopesDictionary.Add(extensionScope.GetType(), extensionScope);
+    }
 
-        public T Extension<T>() where T : IExtensionScope
-        {
-            var extensionScope = Extension(typeof(T));
-            return (T)extensionScope;
-        }
+    public T Extension<T>() where T : IExtensionScope
+    {
+        var extensionScope = Extension(typeof(T));
+        return (T)extensionScope;
+    }
 
-        public IExtensionScope Extension(Type extensionScopeType)
-        {
-            if (!_scopesDictionary.TryGetValue(extensionScopeType, out var extensionScope))
-                throw new InvalidOperationException($"Could not find extension scope of type {extensionScopeType}");
+    public IExtensionScope Extension(Type extensionScopeType)
+    {
+        if (!_scopesDictionary.TryGetValue(extensionScopeType, out var extensionScope))
+            throw new InvalidOperationException($"Could not find extension scope of type {extensionScopeType}");
 
-            return extensionScope;
-        }
+        return extensionScope;
+    }
 
-        public Task BeginValidationAsync()
-        {
-            return Task.WhenAll(_scopes.Select(e => e.BeginValidationAsync().AsTask()));
-        }
+    public Task BeginValidationAsync()
+    {
+        return Task.WhenAll(_scopes.Select(e => e.BeginValidationAsync().AsTask()));
+    }
 
-        public async Task EndValidationAsync(ValidationResult validationResult)
-        {
-            foreach (var extension in _scopes) await extension.EndValidationAsync(validationResult);
-        }
+    public async Task EndValidationAsync(ValidationResult validationResult)
+    {
+        foreach (var extension in _scopes) await extension.EndValidationAsync(validationResult);
+    }
 
-        public async Task EndExecuteAsync(IExecutionResult executionResult)
-        {
-            foreach (var extension in _scopes)
-                await extension.EndExecuteAsync(executionResult);
-        }
+    public async Task EndExecuteAsync(IExecutionResult executionResult)
+    {
+        foreach (var extension in _scopes)
+            await extension.EndExecuteAsync(executionResult);
+    }
 
-        public Task BeginParseDocumentAsync()
-        {
-            return Task.WhenAll(_scopes.Select(e => e.BeginParseDocumentAsync().AsTask()));
-        }
+    public Task BeginParseDocumentAsync()
+    {
+        return Task.WhenAll(_scopes.Select(e => e.BeginParseDocumentAsync().AsTask()));
+    }
 
-        public async Task EndParseDocumentAsync(ExecutableDocument document)
-        {
-            foreach (var extension in _scopes) await extension.EndParseDocumentAsync(document);
-        }
+    public async Task EndParseDocumentAsync(ExecutableDocument document)
+    {
+        foreach (var extension in _scopes) await extension.EndParseDocumentAsync(document);
+    }
 
-        public async ValueTask BeginResolveAsync(IResolverContext context)
+    public async ValueTask BeginResolveAsync(IResolverContext context)
+    {
+        foreach (var extension in _scopes)
         {
-            foreach (var extension in _scopes)
-            {
-                var task = extension.BeginResolveAsync(context);
+            var task = extension.BeginResolveAsync(context);
 
-                if (task.IsCompletedSuccessfully)
-                    continue;
+            if (task.IsCompletedSuccessfully)
+                continue;
 
-                await task;
-            }
+            await task;
         }
+    }
 
-        public async ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
+    public async ValueTask EndResolveAsync(IResolverContext context, IResolverResult result)
+    {
+        foreach (var extension in _scopes)
         {
-            foreach (var extension in _scopes)
-            {
-                var task = extension.EndResolveAsync(context, result);
+            var task = extension.EndResolveAsync(context, result);
 
-                if (task.IsCompletedSuccessfully)
-                    continue;
+            if (task.IsCompletedSuccessfully)
+                continue;
 
-                await task;
-            }
+            await task;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ExtensionsRunnerFactory.cs b/src/graphql/ExtensionsRunnerFactory.cs
index 3b5eba3b8..f09664fb6 100644
--- a/src/graphql/ExtensionsRunnerFactory.cs
+++ b/src/graphql/ExtensionsRunnerFactory.cs
@@ -1,19 +1,18 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class ExtensionsRunnerFactory : IExtensionsRunnerFactory
 {
-    public class ExtensionsRunnerFactory : IExtensionsRunnerFactory
+    public async Task<ExtensionsRunner> BeginScope(ExecutionOptions options)
     {
-        public async Task<ExtensionsRunner> BeginScope(ExecutionOptions options)
-        {
-            var extensions = options.Extensions;
-            var scopes = new List<IExtensionScope>();
+        var extensions = options.Extensions;
+        var scopes = new List<IExtensionScope>();
 
-            foreach (var extension in extensions) 
-                scopes.Add(await extension.BeginExecuteAsync(options));
+        foreach (var extension in extensions)
+            scopes.Add(await extension.BeginExecuteAsync(options));
 
-            return new ExtensionsRunner(scopes);
-        }
+        return new ExtensionsRunner(scopes);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/FieldResolversMap.cs b/src/graphql/FieldResolversMap.cs
index 6d6954123..fd721ce94 100644
--- a/src/graphql/FieldResolversMap.cs
+++ b/src/graphql/FieldResolversMap.cs
@@ -3,115 +3,112 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class FieldResolversMap : IEnumerable<Resolver>, IEnumerable<Subscriber>
 {
-    public class FieldResolversMap : IEnumerable<Resolver>, IEnumerable<Subscriber>
+    private readonly Dictionary<string, Resolver> _resolvers = new();
+    private readonly Dictionary<string, Subscriber> _subscribers = new();
+
+    IEnumerator<Resolver> IEnumerable<Resolver>.GetEnumerator()
     {
-        private readonly Dictionary<string, Resolver> _resolvers = new Dictionary<string, Resolver>();
-        private readonly Dictionary<string, Subscriber> _subscribers = new Dictionary<string, Subscriber>();
+        return _resolvers.Values.GetEnumerator();
+    }
 
-        IEnumerator<Resolver> IEnumerable<Resolver>.GetEnumerator()
-        {
-            return _resolvers.Values.GetEnumerator();
-        }
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        var list = new List<object>();
+        list.AddRange(_resolvers.Values);
+        list.AddRange(_subscribers.Values);
+        return list.GetEnumerator();
+    }
 
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            var list = new List<object>();
-            list.AddRange(_resolvers.Values);
-            list.AddRange(_subscribers.Values);
-            return list.GetEnumerator();
-        }
+    IEnumerator<Subscriber> IEnumerable<Subscriber>.GetEnumerator()
+    {
+        return _subscribers.Values.GetEnumerator();
+    }
 
-        IEnumerator<Subscriber> IEnumerable<Subscriber>.GetEnumerator()
-        {
-            return _subscribers.Values.GetEnumerator();
-        }
+    public IEnumerable<string> GetFields()
+    {
+        foreach (var (field, _) in _resolvers) yield return field;
 
-        public IEnumerable<string> GetFields()
+        foreach (var (field, _) in _subscribers)
         {
-            foreach (var (field, _) in _resolvers)
-            {
-                yield return field;
-            }
-
-            foreach (var (field, _) in _subscribers)
-            {   if (_resolvers.ContainsKey(field))
-                    continue;
+            if (_resolvers.ContainsKey(field))
+                continue;
 
-                yield return field;
-            }
+            yield return field;
         }
+    }
 
-        public void Add(string key, Resolver resolver)
-        {
-            _resolvers.Add(key, resolver);
-        }
+    public void Add(string key, Resolver resolver)
+    {
+        _resolvers.Add(key, resolver);
+    }
 
-        public void Add(string key, Subscriber subscriber)
-        {
-            _subscribers.Add(key, subscriber);
-        }
+    public void Add(string key, Subscriber subscriber)
+    {
+        _subscribers.Add(key, subscriber);
+    }
 
-        public void Add(string key, Subscriber subscriber, Resolver resolver)
-        {
-            if (key == null) throw new ArgumentNullException(nameof(key));
-            if (subscriber == null) throw new ArgumentNullException(nameof(subscriber));
-            if (resolver == null) throw new ArgumentNullException(nameof(resolver));
+    public void Add(string key, Subscriber subscriber, Resolver resolver)
+    {
+        if (key == null) throw new ArgumentNullException(nameof(key));
+        if (subscriber == null) throw new ArgumentNullException(nameof(subscriber));
+        if (resolver == null) throw new ArgumentNullException(nameof(resolver));
 
-            _subscribers.Add(key, subscriber);
-            _resolvers.Add(key, resolver);
-        }
+        _subscribers.Add(key, subscriber);
+        _resolvers.Add(key, resolver);
+    }
 
-        public Resolver? GetResolver(string key)
-        {
-            if (!_resolvers.ContainsKey(key))
-                return null;
+    public Resolver? GetResolver(string key)
+    {
+        if (!_resolvers.ContainsKey(key))
+            return null;
 
-            return _resolvers[key];
-        }
+        return _resolvers[key];
+    }
 
-        public Subscriber? GetSubscriber(string key)
-        {
-            if (!_subscribers.ContainsKey(key))
-                return null;
+    public Subscriber? GetSubscriber(string key)
+    {
+        if (!_subscribers.ContainsKey(key))
+            return null;
 
-            return _subscribers[key];
-        }
+        return _subscribers[key];
+    }
 
-        public FieldResolversMap Clone()
-        {
-            var result = new FieldResolversMap();
-            foreach (var aResolver in _resolvers) result._resolvers.Add(aResolver.Key, aResolver.Value);
+    public FieldResolversMap Clone()
+    {
+        var result = new FieldResolversMap();
+        foreach (var aResolver in _resolvers) result._resolvers.Add(aResolver.Key, aResolver.Value);
 
-            foreach (var aSubscriber in _subscribers) result._subscribers.Add(aSubscriber.Key, aSubscriber.Value);
+        foreach (var aSubscriber in _subscribers) result._subscribers.Add(aSubscriber.Key, aSubscriber.Value);
 
-            return result;
-        }
+        return result;
+    }
 
-        public static FieldResolversMap operator +(FieldResolversMap a, FieldResolversMap b)
-        {
-            var result = a.Clone();
+    public static FieldResolversMap operator +(FieldResolversMap a, FieldResolversMap b)
+    {
+        var result = a.Clone();
 
-            // override resolvers of a with b
-            foreach (var bResolver in b._resolvers) result._resolvers[bResolver.Key] = bResolver.Value;
+        // override resolvers of a with b
+        foreach (var bResolver in b._resolvers) result._resolvers[bResolver.Key] = bResolver.Value;
 
-            foreach (var bSubscriber in b._subscribers) result._subscribers[bSubscriber.Key] = bSubscriber.Value;
+        foreach (var bSubscriber in b._subscribers) result._subscribers[bSubscriber.Key] = bSubscriber.Value;
 
-            return result;
-        }
+        return result;
+    }
 
-        public static FieldResolversMap operator -(FieldResolversMap a, string fieldName)
-        {
-            var result = a.Clone();
+    public static FieldResolversMap operator -(FieldResolversMap a, string fieldName)
+    {
+        var result = a.Clone();
 
-            if (result._resolvers.ContainsKey(fieldName))
-                result._resolvers.Remove(fieldName);
+        if (result._resolvers.ContainsKey(fieldName))
+            result._resolvers.Remove(fieldName);
 
-            if (result._subscribers.ContainsKey(fieldName))
-                result._subscribers.Remove(fieldName);
+        if (result._subscribers.ContainsKey(fieldName))
+            result._subscribers.Remove(fieldName);
 
-            return result;
-        }
+        return result;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/IExecutionResult.cs b/src/graphql/IExecutionResult.cs
index 4020f38b4..f1b9eaedf 100644
--- a/src/graphql/IExecutionResult.cs
+++ b/src/graphql/IExecutionResult.cs
@@ -1,11 +1,10 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public interface IExecutionResult
 {
-    public interface IExecutionResult
-    {
-        List<ExecutionError>? Errors { get; set; }
+    List<ExecutionError>? Errors { get; set; }
 
-        Dictionary<string, object>? Extensions { get; set; }
-    }
+    Dictionary<string, object>? Extensions { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/IExecutorExtension.cs b/src/graphql/IExecutorExtension.cs
index 2be1e5700..c4959bc17 100644
--- a/src/graphql/IExecutorExtension.cs
+++ b/src/graphql/IExecutorExtension.cs
@@ -1,10 +1,9 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public interface IExecutorExtension
 {
-    public interface IExecutorExtension
-    {
-        //todo: change to ValueTask ?
-        Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options);
-    }
+    //todo: change to ValueTask ?
+    Task<IExtensionScope> BeginExecuteAsync(ExecutionOptions options);
 }
\ No newline at end of file
diff --git a/src/graphql/IExtensionScope.cs b/src/graphql/IExtensionScope.cs
index 4ec996586..c37194aa1 100644
--- a/src/graphql/IExtensionScope.cs
+++ b/src/graphql/IExtensionScope.cs
@@ -1,24 +1,23 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.Validation;
+using Tanka.GraphQL.ValueResolution;
+
+namespace Tanka.GraphQL;
 
-namespace Tanka.GraphQL
+public interface IExtensionScope
 {
-    public interface IExtensionScope
-    {
-        ValueTask BeginValidationAsync();
+    ValueTask BeginValidationAsync();
 
-        ValueTask EndValidationAsync(ValidationResult validationResult);
+    ValueTask EndValidationAsync(ValidationResult validationResult);
 
-        ValueTask EndExecuteAsync(IExecutionResult executionResult);
+    ValueTask EndExecuteAsync(IExecutionResult executionResult);
 
-        ValueTask BeginParseDocumentAsync();
+    ValueTask BeginParseDocumentAsync();
 
-        ValueTask EndParseDocumentAsync(ExecutableDocument document);
+    ValueTask EndParseDocumentAsync(ExecutableDocument document);
 
-        ValueTask BeginResolveAsync(IResolverContext context);
+    ValueTask BeginResolveAsync(IResolverContext context);
 
-        ValueTask EndResolveAsync(IResolverContext context, IResolverResult result);
-    }
+    ValueTask EndResolveAsync(IResolverContext context, IResolverResult result);
 }
\ No newline at end of file
diff --git a/src/graphql/IExtensionsRunnerFactory.cs b/src/graphql/IExtensionsRunnerFactory.cs
index e4b657dfa..80b39dd36 100644
--- a/src/graphql/IExtensionsRunnerFactory.cs
+++ b/src/graphql/IExtensionsRunnerFactory.cs
@@ -1,9 +1,8 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public interface IExtensionsRunnerFactory
 {
-    public interface IExtensionsRunnerFactory
-    {
-        Task<ExtensionsRunner> BeginScope(ExecutionOptions options);
-    }
+    Task<ExtensionsRunner> BeginScope(ExecutionOptions options);
 }
\ No newline at end of file
diff --git a/src/graphql/ISubscriberMap.cs b/src/graphql/ISubscriberMap.cs
index 9b7e57f7b..c72021763 100644
--- a/src/graphql/ISubscriberMap.cs
+++ b/src/graphql/ISubscriberMap.cs
@@ -2,21 +2,20 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public interface ISubscriberMap
 {
-    public interface ISubscriberMap
-    {
-        Subscriber? GetSubscriber(string typeName, string fieldName);
+    Subscriber? GetSubscriber(string typeName, string fieldName);
 
-        IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes();
-    }
+    IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes();
+}
 
-    public static class SubscriberMapExtensions
+public static class SubscriberMapExtensions
+{
+    public static Subscriber? GetSubscriber(this ISubscriberMap map, ObjectDefinition type,
+        FieldDefinition field)
     {
-        public static Subscriber? GetSubscriber(this ISubscriberMap map, ObjectDefinition type,
-            FieldDefinition field)
-        {
-            return map.GetSubscriber(type.Name, field.Name);
-        }
+        return map.GetSubscriber(type.Name, field.Name);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/Introspect.cs b/src/graphql/Introspection/Introspect.cs
index 1e645a4ea..e970bed8b 100644
--- a/src/graphql/Introspection/Introspect.cs
+++ b/src/graphql/Introspection/Introspect.cs
@@ -1,13 +1,10 @@
-using System;
-using System.Threading.Tasks;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+public class Introspect
 {
-    public class Introspect
-    {
-        public static string DefaultQuery = @"
+    public static string DefaultQuery = @"
             query IntrospectionQuery {
               __schema {
                 queryType { name }
@@ -97,12 +94,11 @@ fragment TypeRef on __Type {
               }
             }";
 
-        public static (TypeSystemDocument TypeSystemDocument, ResolversMap Resolvers) Create()
-        {
-            var typeSystem = IntrospectionSchema.GetTypeSystem();
-            var introspectionResolvers = new IntrospectionResolvers();
+    public static (TypeSystemDocument TypeSystemDocument, ResolversMap Resolvers) Create()
+    {
+        var typeSystem = IntrospectionSchema.GetTypeSystem();
+        var introspectionResolvers = new IntrospectionResolvers();
 
-            return (typeSystem, introspectionResolvers);
-        }
+        return (typeSystem, introspectionResolvers);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/IntrospectionResult.cs b/src/graphql/Introspection/IntrospectionResult.cs
index 05187ebc9..25ac41804 100644
--- a/src/graphql/Introspection/IntrospectionResult.cs
+++ b/src/graphql/Introspection/IntrospectionResult.cs
@@ -1,7 +1,6 @@
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+public class IntrospectionResult
 {
-    public class IntrospectionResult
-    {
-        public __Schema Schema { get; set; }
-    }
+    public __Schema Schema { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__Directive.cs b/src/graphql/Introspection/__Directive.cs
index 6659184fd..f5b8bfd40 100644
--- a/src/graphql/Introspection/__Directive.cs
+++ b/src/graphql/Introspection/__Directive.cs
@@ -1,14 +1,12 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __Directive
-    {
-        public string Name { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public string Description { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __Directive
+{
+    public string Description { get; set; }
 
-        public List<__DirectiveLocation> Locations { get; set; }
-    }
+    public List<__DirectiveLocation> Locations { get; set; }
+    public string Name { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__DirectiveLocation.cs b/src/graphql/Introspection/__DirectiveLocation.cs
index 6ca7833b2..3bd7631ff 100644
--- a/src/graphql/Introspection/__DirectiveLocation.cs
+++ b/src/graphql/Introspection/__DirectiveLocation.cs
@@ -1,25 +1,24 @@
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+// ReSharper disable once InconsistentNaming
+public enum __DirectiveLocation
 {
-    // ReSharper disable once InconsistentNaming
-    public enum __DirectiveLocation
-    {
-        QUERY,
-        MUTATION,
-        SUBSCRIPTION,
-        FIELD,
-        FRAGMENT_DEFINITION,
-        FRAGMENT_SPREAD,
-        INLINE_FRAGMENT,
-        SCHEMA,
-        SCALAR,
-        OBJECT,
-        FIELD_DEFINITION,
-        ARGUMENT_DEFINITION,
-        INTERFACE,
-        UNION,
-        ENUM,
-        ENUM_VALUE,
-        INPUT_OBJECT,
-        INPUT_FIELD_DEFINITION
-    }
+    QUERY,
+    MUTATION,
+    SUBSCRIPTION,
+    FIELD,
+    FRAGMENT_DEFINITION,
+    FRAGMENT_SPREAD,
+    INLINE_FRAGMENT,
+    SCHEMA,
+    SCALAR,
+    OBJECT,
+    FIELD_DEFINITION,
+    ARGUMENT_DEFINITION,
+    INTERFACE,
+    UNION,
+    ENUM,
+    ENUM_VALUE,
+    INPUT_OBJECT,
+    INPUT_FIELD_DEFINITION
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__EnumValue.cs b/src/graphql/Introspection/__EnumValue.cs
index 706b48e17..df9645747 100644
--- a/src/graphql/Introspection/__EnumValue.cs
+++ b/src/graphql/Introspection/__EnumValue.cs
@@ -1,12 +1,10 @@
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __EnumValue
-    {
-        public string Name { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public string Description { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __EnumValue
+{
+    public string DeprecationReason { get; set; }
 
-        public string DeprecationReason { get; set; }
-    }
+    public string Description { get; set; }
+    public string Name { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__Field.cs b/src/graphql/Introspection/__Field.cs
index 2461f8183..ed0c4be12 100644
--- a/src/graphql/Introspection/__Field.cs
+++ b/src/graphql/Introspection/__Field.cs
@@ -1,20 +1,18 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __Field
-    {
-        public string Name { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public string Description { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __Field
+{
+    public List<__InputValue> Args { get; set; }
 
-        public List<__InputValue> Args { get; set; }
+    public string DeprecationReason { get; set; }
 
-        public __Type Type { get; set; }
+    public string Description { get; set; }
 
-        public bool IsDeprecated { get; set; }
+    public bool IsDeprecated { get; set; }
+    public string Name { get; set; }
 
-        public string DeprecationReason { get; set; }
-    }
+    public __Type Type { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__InputValue.cs b/src/graphql/Introspection/__InputValue.cs
index d41f9c2e4..9aceed23a 100644
--- a/src/graphql/Introspection/__InputValue.cs
+++ b/src/graphql/Introspection/__InputValue.cs
@@ -1,14 +1,12 @@
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __InputValue
-    {
-        public string Name { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public string Description { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __InputValue
+{
+    public string DefaultValue { get; set; }
 
-        public __Type Type { get; set; }
+    public string Description { get; set; }
+    public string Name { get; set; }
 
-        public string DefaultValue { get; set; }
-    }
+    public __Type Type { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__Schema.cs b/src/graphql/Introspection/__Schema.cs
index c66d9a1e9..74e38b2e8 100644
--- a/src/graphql/Introspection/__Schema.cs
+++ b/src/graphql/Introspection/__Schema.cs
@@ -1,18 +1,16 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __Schema
-    {
-        public List<__Type> Types { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public __Type QueryType { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __Schema
+{
+    public List<__Directive> Directives { get; set; }
 
-        public __Type MutationType { get; set; }
+    public __Type MutationType { get; set; }
 
-        public __Type SubscriptionType { get; set; }
+    public __Type QueryType { get; set; }
 
-        public List<__Directive> Directives { get; set; }
-    }
+    public __Type SubscriptionType { get; set; }
+    public List<__Type> Types { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__Type.cs b/src/graphql/Introspection/__Type.cs
index d29f1e4ac..b8795eb3d 100644
--- a/src/graphql/Introspection/__Type.cs
+++ b/src/graphql/Introspection/__Type.cs
@@ -1,65 +1,63 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Introspection
-{
-    // ReSharper disable once InconsistentNaming
-    public class __Type : IEquatable<__Type>
-    {
-        public __TypeKind? Kind { get; set; }
+namespace Tanka.GraphQL.Introspection;
 
-        public string Name { get; set; }
+// ReSharper disable once InconsistentNaming
+public class __Type : IEquatable<__Type>
+{
+    public string Description { get; set; }
 
-        public string Description { get; set; }
+    public List<__EnumValue> EnumValues { get; set; }
 
-        public List<__Field> Fields { get; set; }
+    public List<__Field> Fields { get; set; }
 
-        public List<__Type> Interfaces { get; set; }
+    public List<__InputValue> InputFields { get; set; }
 
-        public List<__Type> PossibleTypes { get; set; }
+    public List<__Type> Interfaces { get; set; }
+    public __TypeKind? Kind { get; set; }
 
-        public List<__EnumValue> EnumValues { get; set; }
+    public string Name { get; set; }
 
-        public List<__InputValue> InputFields { get; set; }
+    public __Type OfType { get; set; }
 
-        public __Type OfType { get; set; }
+    public List<__Type> PossibleTypes { get; set; }
 
-        public bool Equals(__Type other)
-        {
-            if (ReferenceEquals(null, other)) return false;
-            if (ReferenceEquals(this, other)) return true;
-            return Kind == other.Kind && string.Equals(Name, other.Name);
-        }
+    public bool Equals(__Type other)
+    {
+        if (ReferenceEquals(null, other)) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return Kind == other.Kind && string.Equals(Name, other.Name);
+    }
 
-        public override string ToString()
-        {
-            return $"{Kind} {Name}";
-        }
+    public override string ToString()
+    {
+        return $"{Kind} {Name}";
+    }
 
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj)) return false;
-            if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
-            return Equals((__Type) obj);
-        }
+    public override bool Equals(object obj)
+    {
+        if (ReferenceEquals(null, obj)) return false;
+        if (ReferenceEquals(this, obj)) return true;
+        if (obj.GetType() != GetType()) return false;
+        return Equals((__Type)obj);
+    }
 
-        public override int GetHashCode()
+    public override int GetHashCode()
+    {
+        unchecked
         {
-            unchecked
-            {
-                return (Kind.GetHashCode() * 397) ^ (Name != null ? Name.GetHashCode() : 0);
-            }
+            return (Kind.GetHashCode() * 397) ^ (Name != null ? Name.GetHashCode() : 0);
         }
+    }
 
-        public static bool operator ==(__Type left, __Type right)
-        {
-            return Equals(left, right);
-        }
+    public static bool operator ==(__Type left, __Type right)
+    {
+        return Equals(left, right);
+    }
 
-        public static bool operator !=(__Type left, __Type right)
-        {
-            return !Equals(left, right);
-        }
+    public static bool operator !=(__Type left, __Type right)
+    {
+        return !Equals(left, right);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Introspection/__TypeKind.cs b/src/graphql/Introspection/__TypeKind.cs
index 14850aeed..0cceb4632 100644
--- a/src/graphql/Introspection/__TypeKind.cs
+++ b/src/graphql/Introspection/__TypeKind.cs
@@ -1,15 +1,14 @@
-namespace Tanka.GraphQL.Introspection
+namespace Tanka.GraphQL.Introspection;
+
+// ReSharper disable once InconsistentNaming
+public enum __TypeKind
 {
-    // ReSharper disable once InconsistentNaming
-    public enum __TypeKind
-    {
-        SCALAR,
-        OBJECT,
-        INTERFACE,
-        UNION,
-        ENUM,
-        INPUT_OBJECT,
-        LIST,
-        NON_NULL
-    }
+    SCALAR,
+    OBJECT,
+    INTERFACE,
+    UNION,
+    ENUM,
+    INPUT_OBJECT,
+    LIST,
+    NON_NULL
 }
\ No newline at end of file
diff --git a/src/graphql/Language/AstNodeExtensions.cs b/src/graphql/Language/AstNodeExtensions.cs
index 6b45d2c39..db50c1682 100644
--- a/src/graphql/Language/AstNodeExtensions.cs
+++ b/src/graphql/Language/AstNodeExtensions.cs
@@ -1,14 +1,13 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public static class NodeExtensions
 {
-    public static class NodeExtensions
+    [Obsolete("Going to get replaced by the new language module renderer when it's ready")]
+    public static string ToGraphQL(this INode node)
     {
-        [Obsolete("Going to get replaced by the new language module renderer when it's ready")]
-        public static string ToGraphQL(this INode node)
-        {
-            return Printer.Print(node);
-        }
+        return Printer.Print(node);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Language/DocumentException.cs b/src/graphql/Language/DocumentException.cs
index 633af9e28..757425dc1 100644
--- a/src/graphql/Language/DocumentException.cs
+++ b/src/graphql/Language/DocumentException.cs
@@ -1,26 +1,23 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.Language;
 
-namespace Tanka.GraphQL.Language
+public class DocumentException : Exception
 {
-    public class DocumentException : Exception
+    public DocumentException(
+        string message,
+        params INode[] nodes) : this(message, null, nodes)
     {
-        public DocumentException(
-            string message,
-            params INode[] nodes): this(message, innerException: null, nodes)
-        {
-            
-        }
-
-        public DocumentException(
-            string message,
-            Exception? innerException,
-            params INode[] nodes): base(message, innerException)
-        {
-            Nodes = nodes;
-        }
+    }
 
-        public INode[] Nodes { get; set; }
+    public DocumentException(
+        string message,
+        Exception? innerException,
+        params INode[] nodes) : base(message, innerException)
+    {
+        Nodes = nodes;
     }
+
+    public INode[] Nodes { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Language/IImportProvider.cs b/src/graphql/Language/IImportProvider.cs
index 16d754419..8d656e2eb 100644
--- a/src/graphql/Language/IImportProvider.cs
+++ b/src/graphql/Language/IImportProvider.cs
@@ -1,15 +1,14 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+/// <summary>
+///     Import provider
+/// </summary>
+public interface IImportProvider
 {
-    /// <summary>
-    ///     Import provider
-    /// </summary>
-    public interface IImportProvider
-    {
-        bool CanImport(string path, string[]? types);
+    bool CanImport(string path, string[]? types);
 
-        ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options);
-    }
+    ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options);
 }
\ No newline at end of file
diff --git a/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs b/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
index f8847ce0e..9fa0dc2dd 100644
--- a/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
+++ b/src/graphql/Language/ImportProviders/EmbeddedResourceImportProvider.cs
@@ -6,63 +6,58 @@
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
+namespace Tanka.GraphQL.Language.ImportProviders;
 
-namespace Tanka.GraphQL.Language.ImportProviders
+public class EmbeddedResourceImportProvider : IImportProvider
 {
-    public class EmbeddedResourceImportProvider : IImportProvider
-    {
-        private static readonly Regex _match = new Regex(@"embedded:\/\/(?<assembly>\w.+)\/(?<resourceName>\w.+)");
-
-        public bool CanImport(string path, string[]? types)
-        {
-            return _match.IsMatch(path);
-        }
+    private static readonly Regex _match = new(@"embedded:\/\/(?<assembly>\w.+)\/(?<resourceName>\w.+)");
 
-        public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
-        {
-            var matches = _match.Match(path);
-            var assembly = matches.Groups["assembly"].Value;
-            var resourceName = matches.Groups["resourceName"].Value;
-
-            var source = GetSource(assembly, resourceName);
-            var document = (TypeSystemDocument)source;
+    public bool CanImport(string path, string[]? types)
+    {
+        return _match.IsMatch(path);
+    }
 
-            /* resource imports are fully qualified */
+    public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? types, ParserOptions options)
+    {
+        var matches = _match.Match(path);
+        var assembly = matches.Groups["assembly"].Value;
+        var resourceName = matches.Groups["resourceName"].Value;
 
-            if (types is {Length: > 0})
-            {
+        var source = GetSource(assembly, resourceName);
+        var document = (TypeSystemDocument)source;
 
-                document = document
-                    .WithDirectiveDefinitions(document.DirectiveDefinitions
-                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
-                    .WithTypeDefinitions(document.TypeDefinitions
-                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList())
-                    .WithTypeExtensions(document.TypeExtensions
-                        ?.Where(type => types.Contains<string>(type.Name.ToString())).ToList());
-            }
+        /* resource imports are fully qualified */
 
-            return document;
-        }
+        if (types is { Length: > 0 })
+            document = document
+                .WithDirectiveDefinitions(document.DirectiveDefinitions
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList())
+                .WithTypeDefinitions(document.TypeDefinitions
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList())
+                .WithTypeExtensions(document.TypeExtensions
+                    ?.Where(type => types.Contains(type.Name.ToString())).ToList());
 
-        private string GetSource(string assemblyName, string resourceName)
-        {
-            Assembly? assembly = null;
+        return document;
+    }
 
-            if (Assembly.GetExecutingAssembly().FullName.StartsWith($"{assemblyName},"))
-                assembly = Assembly.GetExecutingAssembly();
+    private string GetSource(string assemblyName, string resourceName)
+    {
+        Assembly? assembly = null;
 
-            if (assembly == null) assembly = Assembly.Load(assemblyName);
+        if (Assembly.GetExecutingAssembly().FullName.StartsWith($"{assemblyName},"))
+            assembly = Assembly.GetExecutingAssembly();
 
-            using var stream = assembly.GetManifestResourceStream(resourceName);
-            if (stream == null)
-            {
-                var resourceNames = string.Join(",", assembly.GetManifestResourceNames());
-                throw new InvalidOperationException(
-                    $"Could not load manifest stream from '{assemblyName}' with name '{resourceName}'. Found resources: {resourceNames}");
-            }
+        if (assembly == null) assembly = Assembly.Load(assemblyName);
 
-            using var reader = new StreamReader(stream);
-            return reader.ReadToEnd();
+        using var stream = assembly.GetManifestResourceStream(resourceName);
+        if (stream == null)
+        {
+            var resourceNames = string.Join(",", assembly.GetManifestResourceNames());
+            throw new InvalidOperationException(
+                $"Could not load manifest stream from '{assemblyName}' with name '{resourceName}'. Found resources: {resourceNames}");
         }
+
+        using var reader = new StreamReader(stream);
+        return reader.ReadToEnd();
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs b/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
index 05ab3010c..f9b7c3d57 100644
--- a/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
+++ b/src/graphql/Language/ImportProviders/FileSystemImportProvider.cs
@@ -2,7 +2,6 @@
 using System.IO;
 using System.Linq;
 using System.Text;
-using System.Text.Unicode;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
@@ -46,8 +45,6 @@ public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? ty
 
         // if no type filter provided import all
         if (types is { Length: > 0 })
-        {
-
             document = document
                 .WithDirectiveDefinitions(document.DirectiveDefinitions
                     ?.Where(type => types.Contains(type.Name.ToString())).ToList())
@@ -55,7 +52,6 @@ public async ValueTask<TypeSystemDocument> ImportAsync(string path, string[]? ty
                     ?.Where(type => types.Contains(type.Name.ToString())).ToList())
                 .WithTypeExtensions(document.TypeExtensions
                     ?.Where(type => types.Contains(type.Name.ToString())).ToList());
-        }
 
         return document;
     }
@@ -64,7 +60,7 @@ private Import FullyQualify(Import import, string rootPath)
     {
         var from = import.From.ToString();
 
-        if (!Path.IsPathRooted(from)) 
+        if (!Path.IsPathRooted(from))
             from = Path.Combine(rootPath, from);
 
         return new Import(import.Types, new StringValue(Encoding.UTF8.GetBytes(from)));
diff --git a/src/graphql/Language/Operations.cs b/src/graphql/Language/Operations.cs
index 37bebc935..383b468c7 100644
--- a/src/graphql/Language/Operations.cs
+++ b/src/graphql/Language/Operations.cs
@@ -1,38 +1,31 @@
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.Language;
 
-namespace Tanka.GraphQL.Language
+public static class Operations
 {
-    public static class Operations
+    public static OperationDefinition GetOperation(ExecutableDocument document, string operationName)
     {
-        public static OperationDefinition GetOperation(ExecutableDocument document, string operationName)
+        var operations = document.OperationDefinitions;
+
+        if (operations == null)
+            throw new DocumentException("Document does not contain operations");
+
+        if (string.IsNullOrEmpty(operationName))
         {
-            var operations = document.OperationDefinitions;
-            
-            if (operations == null)
-                throw new DocumentException($"Document does not contain operations");
-
-            if (string.IsNullOrEmpty(operationName))
-            {
-                if (operations.Count == 1)
-                {
-                    return operations.Single();
-                }
-
-                throw new DocumentException(
-                    "Multiple operations found. Please provide OperationName");
-            }
-
-            var operation = operations.SingleOrDefault(op => op.Name.Value == operationName);
-
-            if (operation == null)
-            {
-                throw new DocumentException(
-                    $"Could not find operation with name {operationName}");
-            }
-
-            return operation;
+            if (operations.Count == 1) return operations.Single();
+
+            throw new DocumentException(
+                "Multiple operations found. Please provide OperationName");
         }
+
+        var operation = operations.SingleOrDefault(op => op.Name.Value == operationName);
+
+        if (operation == null)
+            throw new DocumentException(
+                $"Could not find operation with name {operationName}");
+
+        return operation;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Language/Visitor.cs b/src/graphql/Language/Visitor.cs
index 8d371a378..7786f6eba 100644
--- a/src/graphql/Language/Visitor.cs
+++ b/src/graphql/Language/Visitor.cs
@@ -1,280 +1,275 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Language
+namespace Tanka.GraphQL.Language;
+
+public class Visitor
 {
-    public class Visitor
+    private readonly List<FragmentDefinition> _fragments = new();
+
+    public IReadOnlyCollection<FragmentDefinition> Fragments => _fragments;
+
+
+    public virtual Argument BeginVisitArgument(Argument argument)
     {
-        private readonly List<FragmentDefinition> _fragments = 
-            new List<FragmentDefinition>();
+        if (argument.Value != null)
+            BeginVisitNode(argument.Value);
 
-        public IReadOnlyCollection<FragmentDefinition> Fragments => _fragments;
+        return EndVisitArgument(argument);
+    }
 
+    public virtual IEnumerable<Argument> BeginVisitArguments(
+        IEnumerable<Argument> arguments)
+    {
+        foreach (var node in arguments)
+            BeginVisitNode(node);
 
-        public virtual Argument BeginVisitArgument(Argument argument)
-        {
-            if (argument.Value != null)
-                BeginVisitNode(argument.Value);
-            
-            return EndVisitArgument(argument);
-        }
+        return arguments;
+    }
 
-        public virtual IEnumerable<Argument> BeginVisitArguments(
-            IEnumerable<Argument> arguments)
-        {
-            foreach (var node in arguments)
-                BeginVisitNode(node);
-            
-            return arguments;
-        }
+    public virtual BooleanValue BeginVisitBooleanValue(
+        BooleanValue value)
+    {
+        return value;
+    }
 
-        public virtual BooleanValue BeginVisitBooleanValue(
-            BooleanValue value)
-        {
-            return value;
-        }
+    public virtual Directive BeginVisitDirective(Directive directive)
+    {
+        if (directive.Arguments != null)
+            BeginVisitArguments(directive.Arguments);
 
-        public virtual Directive BeginVisitDirective(Directive directive)
-        {
-            if (directive.Arguments != null)
-                BeginVisitArguments(directive.Arguments);
-            
-            return directive;
-        }
+        return directive;
+    }
 
-        public virtual IEnumerable<Directive> BeginVisitDirectives(
-            IEnumerable<Directive> directives)
-        {
-            foreach (var directive in directives)
-                BeginVisitNode(directive);
-            return directives;
-        }
+    public virtual IEnumerable<Directive> BeginVisitDirectives(
+        IEnumerable<Directive> directives)
+    {
+        foreach (var directive in directives)
+            BeginVisitNode(directive);
+        return directives;
+    }
 
-        public virtual EnumValue BeginVisitEnumValue(EnumValue value)
-        {
-            return value;
-        }
+    public virtual EnumValue BeginVisitEnumValue(EnumValue value)
+    {
+        return value;
+    }
 
-        public virtual FieldSelection BeginVisitFieldSelection(
-            FieldSelection selection)
-        {
-            if (selection.Arguments != null)
-                BeginVisitArguments(selection.Arguments);
-            if (selection.SelectionSet != null)
-                BeginVisitNode(selection.SelectionSet);
-            if (selection.Directives != null)
-                BeginVisitDirectives(selection.Directives);
-            return EndVisitFieldSelection(selection);
-        }
+    public virtual FieldSelection BeginVisitFieldSelection(
+        FieldSelection selection)
+    {
+        if (selection.Arguments != null)
+            BeginVisitArguments(selection.Arguments);
+        if (selection.SelectionSet != null)
+            BeginVisitNode(selection.SelectionSet);
+        if (selection.Directives != null)
+            BeginVisitDirectives(selection.Directives);
+        return EndVisitFieldSelection(selection);
+    }
 
-        public virtual FloatValue BeginVisitFloatValue(
-            FloatValue value)
-        {
-            return value;
-        }
+    public virtual FloatValue BeginVisitFloatValue(
+        FloatValue value)
+    {
+        return value;
+    }
 
-        public virtual FragmentDefinition BeginVisitFragmentDefinition(
-            FragmentDefinition node)
-        {
-            BeginVisitNode(node.TypeCondition);
-            if (node.SelectionSet != null)
-                BeginVisitNode(node.SelectionSet);
+    public virtual FragmentDefinition BeginVisitFragmentDefinition(
+        FragmentDefinition node)
+    {
+        BeginVisitNode(node.TypeCondition);
+        if (node.SelectionSet != null)
+            BeginVisitNode(node.SelectionSet);
 
-            _fragments.Add(node);
-            return node;
-        }
+        _fragments.Add(node);
+        return node;
+    }
 
-        public virtual FragmentSpread BeginVisitFragmentSpread(
-            FragmentSpread fragmentSpread)
-        {
-            return fragmentSpread;
-        }
+    public virtual FragmentSpread BeginVisitFragmentSpread(
+        FragmentSpread fragmentSpread)
+    {
+        return fragmentSpread;
+    }
 
-        public virtual InlineFragment BeginVisitInlineFragment(
-            InlineFragment inlineFragment)
-        {
-            if (inlineFragment.TypeCondition != null)
-                BeginVisitNode(inlineFragment.TypeCondition);
-            if (inlineFragment.Directives != null)
-                BeginVisitDirectives(inlineFragment.Directives);
-            if (inlineFragment.SelectionSet != null)
-                BeginVisitSelectionSet(inlineFragment.SelectionSet);
-            return inlineFragment;
-        }
+    public virtual InlineFragment BeginVisitInlineFragment(
+        InlineFragment inlineFragment)
+    {
+        if (inlineFragment.TypeCondition != null)
+            BeginVisitNode(inlineFragment.TypeCondition);
+        if (inlineFragment.Directives != null)
+            BeginVisitDirectives(inlineFragment.Directives);
+        if (inlineFragment.SelectionSet != null)
+            BeginVisitSelectionSet(inlineFragment.SelectionSet);
+        return inlineFragment;
+    }
 
-        public virtual IntValue BeginVisitIntValue(IntValue value)
-        {
-            return value;
-        }
+    public virtual IntValue BeginVisitIntValue(IntValue value)
+    {
+        return value;
+    }
 
-        public virtual NamedType BeginVisitNamedType(
-            NamedType typeCondition)
-        {
-            return typeCondition;
-        }
+    public virtual NamedType BeginVisitNamedType(
+        NamedType typeCondition)
+    {
+        return typeCondition;
+    }
 
-        public virtual INode BeginVisitNode(INode node)
+    public virtual INode BeginVisitNode(INode node)
+    {
+        switch (node.Kind)
         {
-            switch (node.Kind)
-            {
-                case NodeKind.OperationDefinition:
-                    return BeginVisitOperationDefinition((OperationDefinition) node);
-                case NodeKind.VariableDefinition:
-                    return BeginVisitVariableDefinition((VariableDefinition) node);
-                case NodeKind.Variable:
-                    return BeginVisitVariable((Variable) node);
-                case NodeKind.SelectionSet:
-                    return BeginVisitSelectionSet((SelectionSet) node);
-                case NodeKind.FieldSelection:
-                    return BeginVisitNonIntrospectionFieldSelection((FieldSelection) node);
-                case NodeKind.Argument:
-                    return BeginVisitArgument((Argument) node);
-                case NodeKind.FragmentSpread:
-                    return BeginVisitFragmentSpread((FragmentSpread) node);
-                case NodeKind.InlineFragment:
-                    return BeginVisitInlineFragment((InlineFragment) node);
-                case NodeKind.FragmentDefinition:
-                    return BeginVisitFragmentDefinition((FragmentDefinition) node);
-                case NodeKind.IntValue:
-                    return BeginVisitIntValue((IntValue) node);
-                case NodeKind.FloatValue:
-                    return BeginVisitFloatValue((FloatValue) node);
-                case NodeKind.StringValue:
-                    return BeginVisitStringValue((StringValue) node);
-                case NodeKind.BooleanValue:
-                    return BeginVisitBooleanValue((BooleanValue) node);
-                case NodeKind.EnumValue:
-                    return BeginVisitEnumValue((EnumValue) node);
-                case NodeKind.ListValue:
-                    return BeginVisitListValue((ListValue) node);
-                case NodeKind.ObjectValue:
-                    return BeginVisitObjectValue((ObjectValue) node);
-                case NodeKind.ObjectField:
-                    return BeginVisitObjectField((ObjectField) node);
-                case NodeKind.Directive:
-                    return BeginVisitDirective((Directive) node);
-                case NodeKind.NamedType:
-                    return BeginVisitNamedType((NamedType) node);
-                default:
-                    return null;
-            }
+            case NodeKind.OperationDefinition:
+                return BeginVisitOperationDefinition((OperationDefinition)node);
+            case NodeKind.VariableDefinition:
+                return BeginVisitVariableDefinition((VariableDefinition)node);
+            case NodeKind.Variable:
+                return BeginVisitVariable((Variable)node);
+            case NodeKind.SelectionSet:
+                return BeginVisitSelectionSet((SelectionSet)node);
+            case NodeKind.FieldSelection:
+                return BeginVisitNonIntrospectionFieldSelection((FieldSelection)node);
+            case NodeKind.Argument:
+                return BeginVisitArgument((Argument)node);
+            case NodeKind.FragmentSpread:
+                return BeginVisitFragmentSpread((FragmentSpread)node);
+            case NodeKind.InlineFragment:
+                return BeginVisitInlineFragment((InlineFragment)node);
+            case NodeKind.FragmentDefinition:
+                return BeginVisitFragmentDefinition((FragmentDefinition)node);
+            case NodeKind.IntValue:
+                return BeginVisitIntValue((IntValue)node);
+            case NodeKind.FloatValue:
+                return BeginVisitFloatValue((FloatValue)node);
+            case NodeKind.StringValue:
+                return BeginVisitStringValue((StringValue)node);
+            case NodeKind.BooleanValue:
+                return BeginVisitBooleanValue((BooleanValue)node);
+            case NodeKind.EnumValue:
+                return BeginVisitEnumValue((EnumValue)node);
+            case NodeKind.ListValue:
+                return BeginVisitListValue((ListValue)node);
+            case NodeKind.ObjectValue:
+                return BeginVisitObjectValue((ObjectValue)node);
+            case NodeKind.ObjectField:
+                return BeginVisitObjectField((ObjectField)node);
+            case NodeKind.Directive:
+                return BeginVisitDirective((Directive)node);
+            case NodeKind.NamedType:
+                return BeginVisitNamedType((NamedType)node);
+            default:
+                return null;
         }
+    }
 
-        public virtual ObjectField BeginVisitObjectField(ObjectField node)
-        {
-            BeginVisitNode(node.Value);
-            return node;
-        }
+    public virtual ObjectField BeginVisitObjectField(ObjectField node)
+    {
+        BeginVisitNode(node.Value);
+        return node;
+    }
 
-        public virtual OperationDefinition BeginVisitOperationDefinition(
-            OperationDefinition definition)
-        {
-            if (definition.VariableDefinitions != null)
-                BeginVisitVariableDefinitions(definition.VariableDefinitions);
-            BeginVisitNode(definition.SelectionSet);
-            return EndVisitOperationDefinition(definition);
-        }
+    public virtual OperationDefinition BeginVisitOperationDefinition(
+        OperationDefinition definition)
+    {
+        if (definition.VariableDefinitions != null)
+            BeginVisitVariableDefinitions(definition.VariableDefinitions);
+        BeginVisitNode(definition.SelectionSet);
+        return EndVisitOperationDefinition(definition);
+    }
 
-        public virtual OperationDefinition EndVisitOperationDefinition(
-            OperationDefinition definition)
-        {
-            return definition;
-        }
+    public virtual OperationDefinition EndVisitOperationDefinition(
+        OperationDefinition definition)
+    {
+        return definition;
+    }
 
-        public virtual SelectionSet BeginVisitSelectionSet(
-            SelectionSet selectionSet)
-        {
-            foreach (var selection in selectionSet.Selections)
-                BeginVisitNode(selection);
-            
-            return selectionSet;
-        }
+    public virtual SelectionSet BeginVisitSelectionSet(
+        SelectionSet selectionSet)
+    {
+        foreach (var selection in selectionSet.Selections)
+            BeginVisitNode(selection);
 
-        public virtual StringValue BeginVisitStringValue(
-            StringValue value)
-        {
-            return value;
-        }
+        return selectionSet;
+    }
 
-        public virtual Variable BeginVisitVariable(Variable variable)
-        {
-            return EndVisitVariable(variable);
-        }
+    public virtual StringValue BeginVisitStringValue(
+        StringValue value)
+    {
+        return value;
+    }
 
-        public virtual VariableDefinition BeginVisitVariableDefinition(
-            VariableDefinition node)
-        {
-            BeginVisitNode(node.Type);
-            return node;
-        }
+    public virtual Variable BeginVisitVariable(Variable variable)
+    {
+        return EndVisitVariable(variable);
+    }
 
-        public virtual IEnumerable<VariableDefinition> BeginVisitVariableDefinitions(
-            IEnumerable<VariableDefinition> variableDefinitions)
-        {
-            foreach (var variableDefinition in variableDefinitions)
-                BeginVisitNode(variableDefinition);
-            
-            return variableDefinitions;
-        }
+    public virtual VariableDefinition BeginVisitVariableDefinition(
+        VariableDefinition node)
+    {
+        BeginVisitNode(node.Type);
+        return node;
+    }
 
-        public virtual Argument EndVisitArgument(Argument argument)
-        {
-            return argument;
-        }
+    public virtual IEnumerable<VariableDefinition> BeginVisitVariableDefinitions(
+        IEnumerable<VariableDefinition> variableDefinitions)
+    {
+        foreach (var variableDefinition in variableDefinitions)
+            BeginVisitNode(variableDefinition);
 
-        public virtual FieldSelection EndVisitFieldSelection(
-            FieldSelection selection)
-        {
-            return selection;
-        }
+        return variableDefinitions;
+    }
 
-        public virtual Variable EndVisitVariable(Variable variable)
-        {
-            return variable;
-        }
+    public virtual Argument EndVisitArgument(Argument argument)
+    {
+        return argument;
+    }
 
-        public virtual void Visit(ExecutableDocument ast)
-        {
-            if (ast.FragmentDefinitions != null)
-                foreach (var definition in ast.FragmentDefinitions)
-                    BeginVisitNode(definition);
+    public virtual FieldSelection EndVisitFieldSelection(
+        FieldSelection selection)
+    {
+        return selection;
+    }
 
-            if (ast.OperationDefinitions != null)
-                foreach (var definition in ast.OperationDefinitions)
-                    BeginVisitNode(definition);
-        }
+    public virtual Variable EndVisitVariable(Variable variable)
+    {
+        return variable;
+    }
 
-        public virtual ObjectValue BeginVisitObjectValue(
-            ObjectValue node)
-        {
-            foreach (var objectField in node.Fields)
-            {
-                BeginVisitNode(objectField);
-            }
-            return EndVisitObjectValue(node);
-        }
+    public virtual void Visit(ExecutableDocument ast)
+    {
+        if (ast.FragmentDefinitions != null)
+            foreach (var definition in ast.FragmentDefinitions)
+                BeginVisitNode(definition);
 
-        public virtual ObjectValue EndVisitObjectValue(ObjectValue node)
-        {
-            return node;
-        }
+        if (ast.OperationDefinitions != null)
+            foreach (var definition in ast.OperationDefinitions)
+                BeginVisitNode(definition);
+    }
 
-        public virtual ListValue EndVisitListValue(ListValue node)
-        {
-            return node;
-        }
+    public virtual ObjectValue BeginVisitObjectValue(
+        ObjectValue node)
+    {
+        foreach (var objectField in node.Fields) BeginVisitNode(objectField);
+        return EndVisitObjectValue(node);
+    }
 
-        public virtual ListValue BeginVisitListValue(ListValue node)
-        {
-            foreach (var node1 in node.Values)
-                BeginVisitNode(node1);
+    public virtual ObjectValue EndVisitObjectValue(ObjectValue node)
+    {
+        return node;
+    }
 
-            return EndVisitListValue(node);
-        }
+    public virtual ListValue EndVisitListValue(ListValue node)
+    {
+        return node;
+    }
 
-        private FieldSelection BeginVisitNonIntrospectionFieldSelection(FieldSelection selection)
-        {
-            return BeginVisitFieldSelection(selection);
-        }
+    public virtual ListValue BeginVisitListValue(ListValue node)
+    {
+        foreach (var node1 in node.Values)
+            BeginVisitNode(node1);
+
+        return EndVisitListValue(node);
+    }
+
+    private FieldSelection BeginVisitNonIntrospectionFieldSelection(FieldSelection selection)
+    {
+        return BeginVisitFieldSelection(selection);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/LoggerExtensions.cs b/src/graphql/LoggerExtensions.cs
index a8498eb03..72d66a327 100644
--- a/src/graphql/LoggerExtensions.cs
+++ b/src/graphql/LoggerExtensions.cs
@@ -1,89 +1,87 @@
 using System;
 using System.Linq;
-
 using Microsoft.Extensions.Logging;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+internal static class LoggerExtensions
 {
-    internal static class LoggerExtensions
-    {
-        private static readonly Func<ILogger, string, IDisposable> BeginAction = LoggerMessage
-            .DefineScope<string>("Executing '{OperationName}'");
+    private static readonly Func<ILogger, string, IDisposable> BeginAction = LoggerMessage
+        .DefineScope<string>("Executing '{OperationName}'");
 
-        private static readonly Action<ILogger, bool, Exception> ExecutionResultAction =
-            LoggerMessage.Define<bool>(
-                LogLevel.Information,
-                default(EventId),
-                "Execution complete. HasErrors: {HasErrors}");
+    private static readonly Action<ILogger, bool, Exception> ExecutionResultAction =
+        LoggerMessage.Define<bool>(
+            LogLevel.Information,
+            default,
+            "Execution complete. HasErrors: {HasErrors}");
 
-        private static readonly Action<ILogger, bool, string, Exception> ExecutionResultWithErrorsAction =
-            LoggerMessage.Define<bool, string>(
-                LogLevel.Information,
-                default(EventId),
-                "Execution complete. HasErrors: {HasErrors}, First: '{error}'");
+    private static readonly Action<ILogger, bool, string, Exception> ExecutionResultWithErrorsAction =
+        LoggerMessage.Define<bool, string>(
+            LogLevel.Information,
+            default,
+            "Execution complete. HasErrors: {HasErrors}, First: '{error}'");
 
-        private static readonly Action<ILogger, string, string, Exception> OperationAction = LoggerMessage
-            .Define<string, string>(
-                LogLevel.Information,
-                default(EventId),
-                "Executing operation '{OperationType} {Name}'"
-            );
+    private static readonly Action<ILogger, string, string, Exception> OperationAction = LoggerMessage
+        .Define<string, string>(
+            LogLevel.Information,
+            default,
+            "Executing operation '{OperationType} {Name}'"
+        );
 
-        private static readonly Action<ILogger, bool, Exception> ValidateAction = LoggerMessage
-            .Define<bool>(
-                LogLevel.Information,
-                default(EventId),
-                "Validation requested: '{Validate}'");
+    private static readonly Action<ILogger, bool, Exception> ValidateAction = LoggerMessage
+        .Define<bool>(
+            LogLevel.Information,
+            default,
+            "Validation requested: '{Validate}'");
 
-        private static readonly Action<ILogger, bool, Exception> ValidationResultAction =
-            LoggerMessage.Define<bool>(
-                LogLevel.Information,
-                default(EventId),
-                "Validation IsValid: '{IsValid}'");
+    private static readonly Action<ILogger, bool, Exception> ValidationResultAction =
+        LoggerMessage.Define<bool>(
+            LogLevel.Information,
+            default,
+            "Validation IsValid: '{IsValid}'");
 
-        private static readonly Action<ILogger, ValidationResult, Exception> ValidationResultDebugAction =
-            LoggerMessage.Define<ValidationResult>(
-                LogLevel.Debug,
-                default(EventId),
-                "Validation result: '{ValidationResult}'");
+    private static readonly Action<ILogger, ValidationResult, Exception> ValidationResultDebugAction =
+        LoggerMessage.Define<ValidationResult>(
+            LogLevel.Debug,
+            default,
+            "Validation result: '{ValidationResult}'");
 
-        internal static IDisposable Begin(this ILogger logger, string operationName)
-        {
-            return BeginAction(logger, operationName);
-        }
+    internal static IDisposable Begin(this ILogger logger, string operationName)
+    {
+        return BeginAction(logger, operationName);
+    }
 
-        internal static void Operation(this ILogger logger, OperationDefinition operation)
-        {
-            OperationAction(
-                logger,
-                operation.Operation.ToString().ToLowerInvariant(),
-                operation.Name, null);
-        }
+    internal static void Operation(this ILogger logger, OperationDefinition operation)
+    {
+        OperationAction(
+            logger,
+            operation.Operation.ToString().ToLowerInvariant(),
+            operation.Name, null);
+    }
 
-        internal static void Validate(this ILogger logger, bool validate)
-        {
-            ValidateAction(
-                logger,
-                validate,
-                null);
-        }
+    internal static void Validate(this ILogger logger, bool validate)
+    {
+        ValidateAction(
+            logger,
+            validate,
+            null);
+    }
 
-        internal static void ValidationResult(this ILogger logger, ValidationResult result)
-        {
-            ValidationResultAction(logger, result.IsValid, null);
+    internal static void ValidationResult(this ILogger logger, ValidationResult result)
+    {
+        ValidationResultAction(logger, result.IsValid, null);
 
-            if (!result.IsValid)
-                ValidationResultDebugAction(logger, result, null);
-        }
+        if (!result.IsValid)
+            ValidationResultDebugAction(logger, result, null);
+    }
 
-        internal static void ExecutionResult(this ILogger logger, IExecutionResult result)
-        {
-            if (result.Errors != null && result.Errors.Any())
-                ExecutionResultWithErrorsAction(logger, result.Errors != null, result.Errors?.First().Message, null);
-            else
-                ExecutionResultAction(logger, result.Errors != null, null);
-        }
+    internal static void ExecutionResult(this ILogger logger, IExecutionResult result)
+    {
+        if (result.Errors != null && result.Errors.Any())
+            ExecutionResultWithErrorsAction(logger, result.Errors != null, result.Errors?.First().Message, null);
+        else
+            ExecutionResultAction(logger, result.Errors != null, null);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ParserOptions.cs b/src/graphql/ParserOptions.cs
index 4859a89df..408e934e9 100644
--- a/src/graphql/ParserOptions.cs
+++ b/src/graphql/ParserOptions.cs
@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.ImportProviders;
+
 //using Tanka.GraphQL.Extensions;
 
 namespace Tanka.GraphQL;
diff --git a/src/graphql/QueryExecutionException.cs b/src/graphql/QueryExecutionException.cs
index fdb327ce8..8358f7182 100644
--- a/src/graphql/QueryExecutionException.cs
+++ b/src/graphql/QueryExecutionException.cs
@@ -4,38 +4,37 @@
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class QueryExecutionException : DocumentException
 {
-    public class QueryExecutionException : DocumentException
+    public QueryExecutionException(
+        string message,
+        NodePath path,
+        params INode[] nodes) : this(message, null, path, nodes)
     {
-        public QueryExecutionException(
-            string message,
-            NodePath path,
-            params INode[] nodes) : this(message, null, path, nodes)
-        {
-        }
+    }
 
-        public QueryExecutionException(
-            string message,
-            Exception? innerException,
-            NodePath path,
-            params INode[] nodes) : this(message, innerException, path, null, nodes)
-        {
-        }
+    public QueryExecutionException(
+        string message,
+        Exception? innerException,
+        NodePath path,
+        params INode[] nodes) : this(message, innerException, path, null, nodes)
+    {
+    }
 
-        public QueryExecutionException(
-            string message,
-            Exception? innerException,
-            NodePath path,
-            IReadOnlyDictionary<string, object>? extensions,
-            params INode[] nodes) : base(message, innerException, nodes)
-        {
-            Path = path;
-            Extensions = extensions;
-        }
+    public QueryExecutionException(
+        string message,
+        Exception? innerException,
+        NodePath path,
+        IReadOnlyDictionary<string, object>? extensions,
+        params INode[] nodes) : base(message, innerException, nodes)
+    {
+        Path = path;
+        Extensions = extensions;
+    }
 
-        public IReadOnlyDictionary<string, object>? Extensions { get; set; }
+    public IReadOnlyDictionary<string, object>? Extensions { get; set; }
 
-        public NodePath Path { get; set; }
-    }
+    public NodePath Path { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/ReadOnlyDictionaryExtensions.cs b/src/graphql/ReadOnlyDictionaryExtensions.cs
index 8941c3194..2e37b8780 100644
--- a/src/graphql/ReadOnlyDictionaryExtensions.cs
+++ b/src/graphql/ReadOnlyDictionaryExtensions.cs
@@ -1,27 +1,22 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public static class ReadOnlyDictionaryExtensions
 {
-    public static class ReadOnlyDictionaryExtensions
+    public static T GetValue<T>(this IReadOnlyDictionary<string, object> dictionary, string key,
+        T defaultValue = default)
     {
-        public static T GetValue<T>(this IReadOnlyDictionary<string, object> dictionary, string key, T defaultValue = default)
-        {
-            if (!dictionary.TryGetValue(key, out var value))
-                return defaultValue;
+        if (!dictionary.TryGetValue(key, out var value))
+            return defaultValue;
 
-            if (object.Equals(value, default(T)))
-            {
-                return default;
-            }
+        if (Equals(value, default(T))) return default;
 
-            if (!(value is T typedValue))
-            {
-                throw new InvalidCastException(
-                    $"Could not cast value type '{value.GetType().FullName}' to '{typeof(T).FullName}'");
-            }
+        if (!(value is T typedValue))
+            throw new InvalidCastException(
+                $"Could not cast value type '{value.GetType().FullName}' to '{typeof(T).FullName}'");
 
-            return typedValue;
-        }
+        return typedValue;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ResolversMap.cs b/src/graphql/ResolversMap.cs
index 87316faa4..0610e1c9d 100644
--- a/src/graphql/ResolversMap.cs
+++ b/src/graphql/ResolversMap.cs
@@ -1,163 +1,137 @@
 using System.Collections.Generic;
-using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap, ISubscriberMap
 {
-    public class ResolversMap : Dictionary<string, FieldResolversMap>, IResolverMap, ISubscriberMap
+    public ResolversMap(IResolverMap resolvers, ISubscriberMap? subscribers = null)
     {
-        public ResolversMap(IResolverMap resolvers, ISubscriberMap? subscribers = null)
-        {
-            Add(resolvers, subscribers);
-        }
-
-        public void Add(IResolverMap resolvers, ISubscriberMap? subscribers)
-        {
-            foreach (var (typeName, fields) in resolvers.GetTypes())
-            {
-                foreach (var field in fields)
-                {
-                    var resolver = resolvers?.GetResolver(typeName, field);
-                    var subscriber = subscribers?.GetSubscriber(typeName, field);
-
-                    if (resolver is not null)
-                    {
-                        Add(typeName, field, resolver, subscriber);
-                    }
-                }
-            }
+        Add(resolvers, subscribers);
+    }
 
-            if (subscribers is not null)
-            {
-                foreach (var (typeName, fields) in subscribers.GetTypes())
-                {
-                    foreach (var field in fields)
-                    {
-                        var resolver = resolvers?.GetResolver(typeName, field);
-                        var subscriber = subscribers?.GetSubscriber(typeName, field);
-
-                        if (subscriber is not null)
-                        {
-                            Add(typeName, field, subscriber);
-                        }
-                    }
-                }
-            }
-        }
+    public ResolversMap()
+    {
+    }
 
-        public ResolversMap()
-        {
+    public static IResolverMap None { get; } = new ResolversMap();
 
-        }
+    public Resolver? GetResolver(string typeName, string fieldName)
+    {
+        if (!TryGetValue(typeName, out var objectNode))
+            return null;
 
-        public static IResolverMap None { get; } = new ResolversMap();
+        var resolver = objectNode.GetResolver(fieldName);
+        return resolver;
+    }
 
-        public Resolver? GetResolver(string typeName, string fieldName)
-        {
-            if (!TryGetValue(typeName, out var objectNode))
-                return null;
+    public IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes()
+    {
+        foreach (var (typeName, fields) in this) yield return (typeName, fields.GetFields());
+    }
 
-            var resolver = objectNode.GetResolver(fieldName);
-            return resolver;
-        }
+    public Subscriber? GetSubscriber(string typeName, string fieldName)
+    {
+        if (!TryGetValue(typeName, out var objectNode))
+            return null;
 
-        public IEnumerable<(string TypeName, IEnumerable<string> Fields)> GetTypes()
-        {
-            foreach (var (typeName, fields) in this)
-            {
-                yield return (typeName, fields.GetFields());
-            }
-        }
+        var resolver = objectNode.GetSubscriber(fieldName);
+        return resolver;
+    }
 
-        public Subscriber? GetSubscriber(string typeName, string fieldName)
+    public void Add(IResolverMap resolvers, ISubscriberMap? subscribers)
+    {
+        foreach (var (typeName, fields) in resolvers.GetTypes())
+        foreach (var field in fields)
         {
-            if (!TryGetValue(typeName, out var objectNode))
-                return null;
+            var resolver = resolvers?.GetResolver(typeName, field);
+            var subscriber = subscribers?.GetSubscriber(typeName, field);
 
-            var resolver = objectNode.GetSubscriber(fieldName);
-            return resolver;
+            if (resolver is not null) Add(typeName, field, resolver, subscriber);
         }
 
-        public void Add(string typeName, string fieldName, Resolver resolver, Subscriber? subscriber = null)
-        {
-            if (!TryGetValue(typeName, out var fieldsResolvers))
+        if (subscribers is not null)
+            foreach (var (typeName, fields) in subscribers.GetTypes())
+            foreach (var field in fields)
             {
-                fieldsResolvers = this[typeName] = new FieldResolversMap();
-            }
+                var resolver = resolvers?.GetResolver(typeName, field);
+                var subscriber = subscribers?.GetSubscriber(typeName, field);
 
-            if (subscriber is null)
-                fieldsResolvers.Add(fieldName, resolver);
-            else
-            {
-                fieldsResolvers.Add(fieldName, subscriber, resolver);
+                if (subscriber is not null) Add(typeName, field, subscriber);
             }
-        }
+    }
 
-        public bool Add(string typeName, string fieldName, Subscriber subscriber)
-        {
-            if (!TryGetValue(typeName, out var fieldsResolvers))
-            {
-                fieldsResolvers = this[typeName] = new FieldResolversMap();
-            }
+    public void Add(string typeName, string fieldName, Resolver resolver, Subscriber? subscriber = null)
+    {
+        if (!TryGetValue(typeName, out var fieldsResolvers)) fieldsResolvers = this[typeName] = new FieldResolversMap();
 
-            if (fieldsResolvers.GetSubscriber(fieldName) is not null)
-                return false;
+        if (subscriber is null)
+            fieldsResolvers.Add(fieldName, resolver);
+        else
+            fieldsResolvers.Add(fieldName, subscriber, resolver);
+    }
 
-            fieldsResolvers.Add(fieldName, subscriber);
-            return true;
-        }
+    public bool Add(string typeName, string fieldName, Subscriber subscriber)
+    {
+        if (!TryGetValue(typeName, out var fieldsResolvers)) fieldsResolvers = this[typeName] = new FieldResolversMap();
 
-        public ResolversMap Clone()
-        {
-            var result = new ResolversMap();
+        if (fieldsResolvers.GetSubscriber(fieldName) is not null)
+            return false;
 
-            foreach (var objectMap in this) 
-                result.Add(objectMap.Key, objectMap.Value.Clone());
+        fieldsResolvers.Add(fieldName, subscriber);
+        return true;
+    }
 
-            return result;
-        }
+    public ResolversMap Clone()
+    {
+        var result = new ResolversMap();
 
-        public static ResolversMap operator +(ResolversMap a, ResolversMap b)
-        {
-            var result = a.Clone();
+        foreach (var objectMap in this)
+            result.Add(objectMap.Key, objectMap.Value.Clone());
 
-            result.Add(b, b);
+        return result;
+    }
 
-            return result;
-        }
+    public static ResolversMap operator +(ResolversMap a, ResolversMap b)
+    {
+        var result = a.Clone();
 
-        public static ResolversMap operator +(ResolversMap a, (string Name, FieldResolversMap Fields) objectDefinition)
-        {
-            var result = a.Clone();
+        result.Add(b, b);
 
-            if (result.ContainsKey(objectDefinition.Name))
-                result[objectDefinition.Name] += objectDefinition.Fields;
-            else
-                result[objectDefinition.Name] = objectDefinition.Fields;
+        return result;
+    }
 
-            return result;
-        }
+    public static ResolversMap operator +(ResolversMap a, (string Name, FieldResolversMap Fields) objectDefinition)
+    {
+        var result = a.Clone();
 
-        public static ResolversMap operator -(ResolversMap a, string name)
-        {
-            var result = a.Clone();
+        if (result.ContainsKey(objectDefinition.Name))
+            result[objectDefinition.Name] += objectDefinition.Fields;
+        else
+            result[objectDefinition.Name] = objectDefinition.Fields;
 
-            if (result.ContainsKey(name))
-                result.Remove(name);
+        return result;
+    }
 
-            return result;
-        }
+    public static ResolversMap operator -(ResolversMap a, string name)
+    {
+        var result = a.Clone();
 
-        public static ResolversMap operator -(ResolversMap a, ResolversMap b)
-        {
-            var result = a.Clone();
+        if (result.ContainsKey(name))
+            result.Remove(name);
 
-            // remove b by key
-            foreach (var objectMap in b)
-                if (result.ContainsKey(objectMap.Key))
-                    result.Remove(objectMap.Key);
+        return result;
+    }
 
-            return result;
-        }
+    public static ResolversMap operator -(ResolversMap a, ResolversMap b)
+    {
+        var result = a.Clone();
+
+        // remove b by key
+        foreach (var objectMap in b)
+            if (result.ContainsKey(objectMap.Key))
+                result.Remove(objectMap.Key);
+
+        return result;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/SubscriptionResult.cs b/src/graphql/SubscriptionResult.cs
index 1c0495ca6..bc44bf5d7 100644
--- a/src/graphql/SubscriptionResult.cs
+++ b/src/graphql/SubscriptionResult.cs
@@ -2,57 +2,56 @@
 using System.Linq;
 using System.Threading.Channels;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+/// <summary>
+///     Result of executing a subscription
+/// </summary>
+public class SubscriptionResult : IExecutionResult
 {
-    /// <summary>
-    ///     Result of executing a subscription
-    /// </summary>
-    public class SubscriptionResult : IExecutionResult
-    {
-        private List<ExecutionError> _errors;
-        private Dictionary<string, object> _extensions;
+    private List<ExecutionError> _errors;
+    private Dictionary<string, object> _extensions;
 
-        public SubscriptionResult(Channel<ExecutionResult> source)
-        {
-            Source = source;
-        }
+    public SubscriptionResult(Channel<ExecutionResult> source)
+    {
+        Source = source;
+    }
 
-        public SubscriptionResult()
-        {
-        }
+    public SubscriptionResult()
+    {
+    }
 
-        public Channel<ExecutionResult> Source { get; }
+    public Channel<ExecutionResult> Source { get; }
 
 
-        public Dictionary<string, object> Extensions
+    public Dictionary<string, object> Extensions
+    {
+        get => _extensions;
+        set
         {
-            get => _extensions;
-            set
+            if (value != null && !value.Any())
             {
-                if (value != null && !value.Any())
-                {
-                    _extensions = null;
-                    return;
-                }
-
-                _extensions = value;
+                _extensions = null;
+                return;
             }
+
+            _extensions = value;
         }
+    }
 
-        public List<ExecutionError> Errors
+    public List<ExecutionError> Errors
+    {
+        get => _errors;
+        set
         {
-            get => _errors;
-            set
-            {
-                if (value != null)
-                    if (!value.Any())
-                    {
-                        _errors = null;
-                        return;
-                    }
-
-                _errors = value;
-            }
+            if (value != null)
+                if (!value.Any())
+                {
+                    _errors = null;
+                    return;
+                }
+
+            _errors = value;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Ast.cs b/src/graphql/TypeSystem/Ast.cs
index 076d6dbcf..b81c70a1d 100644
--- a/src/graphql/TypeSystem/Ast.cs
+++ b/src/graphql/TypeSystem/Ast.cs
@@ -4,61 +4,60 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public static class Ast
 {
-    public static class Ast
+    public static bool GetIfArgumentValue(
+        Directive directive,
+        IReadOnlyDictionary<string, object?>? coercedVariableValues,
+        Argument argument)
     {
-        public static bool GetIfArgumentValue(
-            Directive directive,
-            IReadOnlyDictionary<string, object?>? coercedVariableValues,
-            Argument argument)
-        {
-            if (directive == null) throw new ArgumentNullException(nameof(directive));
-            if (argument == null) throw new ArgumentNullException(nameof(argument));
+        if (directive == null) throw new ArgumentNullException(nameof(directive));
+        if (argument == null) throw new ArgumentNullException(nameof(argument));
 
-            switch (argument.Value)
-            {
-                case { Kind: NodeKind.BooleanValue }:
-                    return ((BooleanValue)argument.Value).Value;
-                case { Kind: NodeKind.Variable }:
-                    var variable = (Variable)argument.Value;
-                    var variableValue = coercedVariableValues?[variable.Name];
+        switch (argument.Value)
+        {
+            case { Kind: NodeKind.BooleanValue }:
+                return ((BooleanValue)argument.Value).Value;
+            case { Kind: NodeKind.Variable }:
+                var variable = (Variable)argument.Value;
+                var variableValue = coercedVariableValues?[variable.Name];
 
-                    if (variableValue == null)
-                        throw new Exception(
-                            $"If argument of {directive} is null. Variable value should not be null");
+                if (variableValue == null)
+                    throw new Exception(
+                        $"If argument of {directive} is null. Variable value should not be null");
 
-                    return (bool)variableValue;
-                default:
-                    return false;
-            }
+                return (bool)variableValue;
+            default:
+                return false;
         }
+    }
 
-        public static bool DoesFragmentTypeApply(
-            ObjectDefinition objectType,
-            TypeDefinition fragmentType)
-        {
-            if (objectType.Name == fragmentType.Name)
-                return true;
+    public static bool DoesFragmentTypeApply(
+        ObjectDefinition objectType,
+        TypeDefinition fragmentType)
+    {
+        if (objectType.Name == fragmentType.Name)
+            return true;
 
-            return fragmentType switch
-            {
-                InterfaceDefinition interfaceType => objectType.HasInterface(interfaceType.Name),
-                UnionDefinition unionType => unionType.HasMember(objectType.Name),
-                _ => false
-            };
-        }
+        return fragmentType switch
+        {
+            InterfaceDefinition interfaceType => objectType.HasInterface(interfaceType.Name),
+            UnionDefinition unionType => unionType.HasMember(objectType.Name),
+            _ => false
+        };
+    }
 
-        public static TypeDefinition? UnwrapAndResolveType(ISchema schema, TypeBase? type)
+    public static TypeDefinition? UnwrapAndResolveType(ISchema schema, TypeBase? type)
+    {
+        return type switch
         {
-            return type switch
-            {
-                null => null,
-                NonNullType nonNullType => UnwrapAndResolveType(schema, nonNullType.OfType),
-                ListType list => UnwrapAndResolveType(schema, list.OfType),
-                NamedType namedType => schema.GetNamedType(namedType.Name),
-                _ => throw new InvalidOperationException($"Unsupported type '{type}'")
-            };
-        }
+            null => null,
+            NonNullType nonNullType => UnwrapAndResolveType(schema, nonNullType.OfType),
+            ListType list => UnwrapAndResolveType(schema, list.OfType),
+            NamedType namedType => schema.GetNamedType(namedType.Name),
+            _ => throw new InvalidOperationException($"Unsupported type '{type}'")
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/DirectiveList.cs b/src/graphql/TypeSystem/DirectiveList.cs
index fc921c371..f826486b5 100644
--- a/src/graphql/TypeSystem/DirectiveList.cs
+++ b/src/graphql/TypeSystem/DirectiveList.cs
@@ -2,40 +2,39 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public class DirectiveList : IHasDirectives, IEnumerable<Directive>
 {
-    public class DirectiveList : IHasDirectives, IEnumerable<Directive>
+    private readonly Dictionary<string, Directive>
+        _directives = new();
+
+    public DirectiveList(IEnumerable<Directive>? directives = null)
+    {
+        if (directives != null)
+            foreach (var directiveInstance in directives)
+                _directives[directiveInstance.Name] = directiveInstance;
+    }
+
+    public IEnumerator<Directive> GetEnumerator()
+    {
+        return _directives.Values.GetEnumerator();
+    }
+
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return GetEnumerator();
+    }
+
+    public IEnumerable<Directive> Directives => _directives.Values;
+
+    public Directive? GetDirective(string name)
+    {
+        return _directives.ContainsKey(name) ? _directives[name] : null;
+    }
+
+    public bool HasDirective(string name)
     {
-        private readonly Dictionary<string, Directive>
-            _directives = new Dictionary<string, Directive>();
-
-        public DirectiveList(IEnumerable<Directive>? directives = null)
-        {
-            if (directives != null)
-                foreach (var directiveInstance in directives)
-                    _directives[directiveInstance.Name] = directiveInstance;
-        }
-
-        public IEnumerable<Directive> Directives => _directives.Values;
-
-        public Directive? GetDirective(string name)
-        {
-            return _directives.ContainsKey(name) ? _directives[name] : null;
-        }
-
-        public IEnumerator<Directive> GetEnumerator()
-        {
-            return _directives.Values.GetEnumerator();
-        }
-
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return GetEnumerator();
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.ContainsKey(name);
-        }
+        return _directives.ContainsKey(name);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ExecutableSchema.cs b/src/graphql/TypeSystem/ExecutableSchema.cs
index 2e6900982..3d96fde2b 100644
--- a/src/graphql/TypeSystem/ExecutableSchema.cs
+++ b/src/graphql/TypeSystem/ExecutableSchema.cs
@@ -7,173 +7,168 @@
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public class ExecutableSchema : ISchema
 {
-    public class ExecutableSchema : ISchema
-    {
-        private readonly DirectiveList _directives;
-        private readonly IReadOnlyDictionary<string, DirectiveDefinition> _directiveTypes;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> _fields;
-        private readonly IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> _inputFields;
-        private readonly IResolverMap _resolvers;
-        private readonly IReadOnlyDictionary<string, IValueConverter> _scalarSerializers;
-        private readonly ISubscriberMap _subscribers;
-        private readonly IReadOnlyDictionary<string, TypeDefinition> _types;
-
-        public ExecutableSchema(
-            IReadOnlyDictionary<string, TypeDefinition> types,
-            IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> fields,
-            IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> inputFields,
-            IReadOnlyDictionary<string, DirectiveDefinition> directiveTypes,
-            ObjectDefinition queryRoot,
-            IResolverMap resolvers,
-            IReadOnlyDictionary<string, IValueConverter> scalarSerializers,
-            ObjectDefinition? mutationRoot = null,
-            ObjectDefinition? subscriptionRoot = null,
-            ISubscriberMap? subscribers = null,
-            IEnumerable<Directive>? directives = null)
-        {
-            _types = types;
-            _fields = fields;
-            _inputFields = inputFields;
-            _directiveTypes = directiveTypes;
-            _resolvers = resolvers;
-            _subscribers = subscribers;
-            _scalarSerializers = scalarSerializers;
-            _directives = new DirectiveList(directives);
-
-            Query = queryRoot;
-            Mutation = mutationRoot;
-            Subscription = subscriptionRoot;
-        }
-
-        public ObjectDefinition? Subscription { get; }
-
-        public ObjectDefinition Query { get; }
-
-        public ObjectDefinition? Mutation { get; }
-
-        public TypeDefinition? GetNamedType(string name)
-        {
-            if (_types.TryGetValue(name, out var type)) return type;
-
-            return null;
-        }
-
-        public FieldDefinition? GetField(string type, string name)
-        {
-            if (_fields.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(name, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type)
-        {
-            if (_fields.TryGetValue(type, out var fields)) return fields;
-
-            return Enumerable.Empty<KeyValuePair<string, FieldDefinition>>();
-        }
-
-        public IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition
-        {
-            if (filter == null)
-                return _types.Select(t => t.Value)
-                    .OfType<T>()
-                    .AsQueryable();
+    private readonly DirectiveList _directives;
+    private readonly IReadOnlyDictionary<string, DirectiveDefinition> _directiveTypes;
+    private readonly IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> _fields;
+    private readonly IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> _inputFields;
+    private readonly IResolverMap _resolvers;
+    private readonly IReadOnlyDictionary<string, IValueConverter> _scalarSerializers;
+    private readonly ISubscriberMap _subscribers;
+    private readonly IReadOnlyDictionary<string, TypeDefinition> _types;
+
+    public ExecutableSchema(
+        IReadOnlyDictionary<string, TypeDefinition> types,
+        IReadOnlyDictionary<string, Dictionary<string, FieldDefinition>> fields,
+        IReadOnlyDictionary<string, Dictionary<string, InputValueDefinition>> inputFields,
+        IReadOnlyDictionary<string, DirectiveDefinition> directiveTypes,
+        ObjectDefinition queryRoot,
+        IResolverMap resolvers,
+        IReadOnlyDictionary<string, IValueConverter> scalarSerializers,
+        ObjectDefinition? mutationRoot = null,
+        ObjectDefinition? subscriptionRoot = null,
+        ISubscriberMap? subscribers = null,
+        IEnumerable<Directive>? directives = null)
+    {
+        _types = types;
+        _fields = fields;
+        _inputFields = inputFields;
+        _directiveTypes = directiveTypes;
+        _resolvers = resolvers;
+        _subscribers = subscribers;
+        _scalarSerializers = scalarSerializers;
+        _directives = new DirectiveList(directives);
+
+        Query = queryRoot;
+        Mutation = mutationRoot;
+        Subscription = subscriptionRoot;
+    }
+
+    public ObjectDefinition? Subscription { get; }
+
+    public ObjectDefinition Query { get; }
+
+    public ObjectDefinition? Mutation { get; }
+
+    public TypeDefinition? GetNamedType(string name)
+    {
+        if (_types.TryGetValue(name, out var type)) return type;
+
+        return null;
+    }
+
+    public FieldDefinition? GetField(string type, string name)
+    {
+        if (_fields.TryGetValue(type, out var fields))
+            if (fields.TryGetValue(name, out var field))
+                return field;
+
+        return null;
+    }
+
+    public IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type)
+    {
+        if (_fields.TryGetValue(type, out var fields)) return fields;
 
+        return Enumerable.Empty<KeyValuePair<string, FieldDefinition>>();
+    }
+
+    public IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition
+    {
+        if (filter == null)
             return _types.Select(t => t.Value)
                 .OfType<T>()
-                .Where(t => filter(t))
                 .AsQueryable();
-        }
-
-        public DirectiveDefinition? GetDirectiveType(string name)
-        {
-            if (_directiveTypes.TryGetValue(name, out var directive)) return directive;
-
-            return null;
-        }
-
-        public IQueryable<DirectiveDefinition> QueryDirectiveTypes(
-            Predicate<DirectiveDefinition>? filter = null)
-        {
-            if (filter != null)
-                return _directiveTypes.Select(v => v.Value)
-                    .Where(d => filter(d))
-                    .AsQueryable();
-
-            return _directiveTypes.Select(v => v.Value).AsQueryable();
-        }
-
-        public IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type)
-        {
-            if (_inputFields.TryGetValue(type, out var fields)) return fields;
-
-            return Enumerable.Empty<KeyValuePair<string, InputValueDefinition>>();
-        }
-
-        public InputValueDefinition? GetInputField(string type, string name)
-        {
-            if (_inputFields.TryGetValue(type, out var fields))
-                if (fields.TryGetValue(name, out var field))
-                    return field;
-
-            return null;
-        }
-
-        public IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType)
-        {
-            foreach (var objectDefinition in QueryTypes<ObjectDefinition>(ob => ob.HasInterface(abstractType.Name)))
-            {
-                yield return objectDefinition;
-            }
-
-            foreach (var interfaceDefinition in QueryTypes<InterfaceDefinition>(ob => ob.HasInterface(abstractType.Name)))
-            {
-                yield return interfaceDefinition;
-            }
-        }
-
-        public IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType)
-        {
-            return QueryTypes<ObjectDefinition>(ob => abstractType.HasMember(ob.Name));
-        }
-
-        public Resolver? GetResolver(string type, string fieldName)
-        {
-            return _resolvers.GetResolver(type, fieldName);
-        }
-
-        public Subscriber? GetSubscriber(string type, string fieldName)
-        {
-            return _subscribers.GetSubscriber(type, fieldName);
-        }
-
-        public IValueConverter? GetValueConverter(string type)
-        {
-            if (_scalarSerializers.TryGetValue(type, out var serializer))
-                return serializer;
-
-            return null;
-        }
-
-        public IEnumerable<Directive> Directives => _directives;
-
-        public Directive? GetDirective(string name)
-        {
-            return null;
-        }
-
-        public bool HasDirective(string name)
-        {
-            return _directives.HasDirective(name);
-        }
-
-        public T? GetNamedType<T>(string name) where T : TypeDefinition
-        {
-            return (T?)GetNamedType(name);
-        }
+
+        return _types.Select(t => t.Value)
+            .OfType<T>()
+            .Where(t => filter(t))
+            .AsQueryable();
+    }
+
+    public DirectiveDefinition? GetDirectiveType(string name)
+    {
+        if (_directiveTypes.TryGetValue(name, out var directive)) return directive;
+
+        return null;
+    }
+
+    public IQueryable<DirectiveDefinition> QueryDirectiveTypes(
+        Predicate<DirectiveDefinition>? filter = null)
+    {
+        if (filter != null)
+            return _directiveTypes.Select(v => v.Value)
+                .Where(d => filter(d))
+                .AsQueryable();
+
+        return _directiveTypes.Select(v => v.Value).AsQueryable();
+    }
+
+    public IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type)
+    {
+        if (_inputFields.TryGetValue(type, out var fields)) return fields;
+
+        return Enumerable.Empty<KeyValuePair<string, InputValueDefinition>>();
+    }
+
+    public InputValueDefinition? GetInputField(string type, string name)
+    {
+        if (_inputFields.TryGetValue(type, out var fields))
+            if (fields.TryGetValue(name, out var field))
+                return field;
+
+        return null;
+    }
+
+    public IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType)
+    {
+        foreach (var objectDefinition in QueryTypes<ObjectDefinition>(ob => ob.HasInterface(abstractType.Name)))
+            yield return objectDefinition;
+
+        foreach (var interfaceDefinition in QueryTypes<InterfaceDefinition>(ob => ob.HasInterface(abstractType.Name)))
+            yield return interfaceDefinition;
+    }
+
+    public IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType)
+    {
+        return QueryTypes<ObjectDefinition>(ob => abstractType.HasMember(ob.Name));
+    }
+
+    public Resolver? GetResolver(string type, string fieldName)
+    {
+        return _resolvers.GetResolver(type, fieldName);
+    }
+
+    public Subscriber? GetSubscriber(string type, string fieldName)
+    {
+        return _subscribers.GetSubscriber(type, fieldName);
+    }
+
+    public IValueConverter? GetValueConverter(string type)
+    {
+        if (_scalarSerializers.TryGetValue(type, out var serializer))
+            return serializer;
+
+        return null;
+    }
+
+    public IEnumerable<Directive> Directives => _directives;
+
+    public Directive? GetDirective(string name)
+    {
+        return null;
+    }
+
+    public bool HasDirective(string name)
+    {
+        return _directives.HasDirective(name);
+    }
+
+    public T? GetNamedType<T>(string name) where T : TypeDefinition
+    {
+        return (T?)GetNamedType(name);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/IHasDirectives.cs b/src/graphql/TypeSystem/IHasDirectives.cs
index d22f95844..267c6ae76 100644
--- a/src/graphql/TypeSystem/IHasDirectives.cs
+++ b/src/graphql/TypeSystem/IHasDirectives.cs
@@ -1,14 +1,13 @@
 using System.Collections.Generic;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public interface IHasDirectives
 {
-    public interface IHasDirectives
-    {
-        IEnumerable<Directive> Directives { get; }
+    IEnumerable<Directive> Directives { get; }
 
-        Directive? GetDirective(string name);
+    Directive? GetDirective(string name);
 
-        bool HasDirective(string name);
-    }
+    bool HasDirective(string name);
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ISchema.cs b/src/graphql/TypeSystem/ISchema.cs
index d555ea2d8..006f6b0dd 100644
--- a/src/graphql/TypeSystem/ISchema.cs
+++ b/src/graphql/TypeSystem/ISchema.cs
@@ -5,40 +5,39 @@
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public interface ISchema : IHasDirectives
 {
-    public interface ISchema : IHasDirectives
-    {
-        ObjectDefinition? Mutation { get; }
+    ObjectDefinition? Mutation { get; }
 
-        ObjectDefinition Query { get; }
+    ObjectDefinition Query { get; }
 
-        ObjectDefinition? Subscription { get; }
+    ObjectDefinition? Subscription { get; }
 
-        TypeDefinition? GetNamedType(string name);
+    TypeDefinition? GetNamedType(string name);
 
-        FieldDefinition? GetField(string type, string name);
+    FieldDefinition? GetField(string type, string name);
 
-        IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type);
+    IEnumerable<KeyValuePair<string, FieldDefinition>> GetFields(string type);
 
-        IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition;
+    IQueryable<T> QueryTypes<T>(Predicate<T>? filter = null) where T : TypeDefinition;
 
-        DirectiveDefinition? GetDirectiveType(string name);
+    DirectiveDefinition? GetDirectiveType(string name);
 
-        IQueryable<DirectiveDefinition> QueryDirectiveTypes(Predicate<DirectiveDefinition>? filter = null);
+    IQueryable<DirectiveDefinition> QueryDirectiveTypes(Predicate<DirectiveDefinition>? filter = null);
 
-        IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type);
+    IEnumerable<KeyValuePair<string, InputValueDefinition>> GetInputFields(string type);
 
-        InputValueDefinition? GetInputField(string type, string name);
+    InputValueDefinition? GetInputField(string type, string name);
 
-        IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType);
+    IEnumerable<TypeDefinition> GetPossibleTypes(InterfaceDefinition abstractType);
 
-        IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType);
+    IEnumerable<ObjectDefinition> GetPossibleTypes(UnionDefinition abstractType);
 
-        Resolver? GetResolver(string type, string fieldName);
+    Resolver? GetResolver(string type, string fieldName);
 
-        Subscriber? GetSubscriber(string type, string fieldName);
+    Subscriber? GetSubscriber(string type, string fieldName);
 
-        IValueConverter? GetValueConverter(string type);
-    }
+    IValueConverter? GetValueConverter(string type);
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/Scalars.cs b/src/graphql/TypeSystem/Scalars.cs
index ec162125b..220462e45 100644
--- a/src/graphql/TypeSystem/Scalars.cs
+++ b/src/graphql/TypeSystem/Scalars.cs
@@ -3,50 +3,49 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public static class Scalars
 {
-    public static class Scalars
-    {
-         public static ScalarDefinition Boolean = new ScalarDefinition(
-            name: "Boolean",
-            description: "The `Boolean` scalar type represents `true` or `false`");
-
-        public static ScalarDefinition Float = new ScalarDefinition(
-            name: "Float",
-            description:"The `Float` scalar type represents signed double-precision fractional values" +
-            " as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)");
-
-        public static ScalarDefinition ID = new ScalarDefinition(
-           name: "ID",
-            description:"The ID scalar type represents a unique identifier, often used to refetch an object" +
-            " or as the key for a cache. The ID type is serialized in the same way as a String; " +
-            "however, it is not intended to be human‐readable. While it is often numeric, it " +
-            "should always serialize as a String.");
-
-        public static ScalarDefinition Int = new ScalarDefinition(
-            name:"Int",
-            description:"The `Int` scalar type represents non-fractional signed whole numeric values");
-
-        public static ScalarDefinition String = new ScalarDefinition(
-            name:"String",
-            description:"The `String` scalar type represents textual data, represented as UTF-8" +
-            " character sequences. The String type is most often used by GraphQL to" +
-            " represent free-form human-readable text.");
-
-        public static NonNullType NonNullBoolean = new NonNullType(new NamedType("Boolean"));
-        public static NonNullType NonNullFloat = new NonNullType(new NamedType("Float"));
-        public static NonNullType NonNullID = new NonNullType(new NamedType("ID"));
-        public static NonNullType NonNullInt = new NonNullType(new NamedType("Int"));
-        public static NonNullType NonNullString = new NonNullType(new NamedType("String"));
-
-        public static IEnumerable<(ScalarDefinition Type, IValueConverter Converter)> Standard =
-            new List<(ScalarDefinition Type, IValueConverter Converter)>()
-            {
-                (String, new StringConverter()),
-                (Int, new IntConverter()),
-                (Float, new DoubleConverter()),
-                (Boolean, new BooleanConverter()),
-                (ID, new IdConverter())
-            };
-    }
+    public static ScalarDefinition Boolean = new(
+        name: "Boolean",
+        description: "The `Boolean` scalar type represents `true` or `false`");
+
+    public static ScalarDefinition Float = new(
+        name: "Float",
+        description: "The `Float` scalar type represents signed double-precision fractional values" +
+                     " as specified by '[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point)");
+
+    public static ScalarDefinition ID = new(
+        name: "ID",
+        description: "The ID scalar type represents a unique identifier, often used to refetch an object" +
+                     " or as the key for a cache. The ID type is serialized in the same way as a String; " +
+                     "however, it is not intended to be human‐readable. While it is often numeric, it " +
+                     "should always serialize as a String.");
+
+    public static ScalarDefinition Int = new(
+        name: "Int",
+        description: "The `Int` scalar type represents non-fractional signed whole numeric values");
+
+    public static ScalarDefinition String = new(
+        name: "String",
+        description: "The `String` scalar type represents textual data, represented as UTF-8" +
+                     " character sequences. The String type is most often used by GraphQL to" +
+                     " represent free-form human-readable text.");
+
+    public static NonNullType NonNullBoolean = new(new NamedType("Boolean"));
+    public static NonNullType NonNullFloat = new(new NamedType("Float"));
+    public static NonNullType NonNullID = new(new NamedType("ID"));
+    public static NonNullType NonNullInt = new(new NamedType("Int"));
+    public static NonNullType NonNullString = new(new NamedType("String"));
+
+    public static IEnumerable<(ScalarDefinition Type, IValueConverter Converter)> Standard =
+        new List<(ScalarDefinition Type, IValueConverter Converter)>
+        {
+            (String, new StringConverter()),
+            (Int, new IntConverter()),
+            (Float, new DoubleConverter()),
+            (Boolean, new BooleanConverter()),
+            (ID, new IdConverter())
+        };
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/SchemaBuilder.cs b/src/graphql/TypeSystem/SchemaBuilder.cs
index 827b44185..bade2dee3 100644
--- a/src/graphql/TypeSystem/SchemaBuilder.cs
+++ b/src/graphql/TypeSystem/SchemaBuilder.cs
@@ -175,18 +175,17 @@ public Task<ISchema> Build(IResolverMap resolvers, ISubscriberMap? subscribers =
             });
     }
 
-    public IEnumerable<TypeDefinition> QueryTypeDefinitions(Func<TypeDefinition, bool> filter, SchemaBuildOptions options)
+    public IEnumerable<TypeDefinition> QueryTypeDefinitions(Func<TypeDefinition, bool> filter,
+        SchemaBuildOptions? options = null)
     {
+        options ??= new SchemaBuildOptions();
         var typeDefinitions = BuildTypeDefinitions(options.BuildTypesFromOrphanedExtensions);
         return typeDefinitions.Where(filter);
     }
 
     public async Task<ISchema> Build(SchemaBuildOptions options)
     {
-        if (options.IncludeBuiltInTypes)
-        {
-            Add(BuiltInTypes);
-        }
+        if (options.IncludeBuiltInTypes) Add(BuiltInTypes);
 
         var resolvers = new ResolversMap(options.Resolvers ?? ResolversMap.None, options.Subscribers);
 
@@ -344,7 +343,7 @@ private IEnumerable<TypeDefinition> RunDirectiveVisitors(
         var visitorList = visitors.ToList();
         for (var typeIndex = 0; typeIndex < typeDefinitionList.Count; typeIndex++)
         {
-            TypeDefinition typeDefinition = typeDefinitionList[typeIndex];
+            var typeDefinition = typeDefinitionList[typeIndex];
             foreach (var (directiveName, visitor) in visitorList)
             {
                 if (visitor.TypeDefinition is not null)
@@ -357,10 +356,7 @@ private IEnumerable<TypeDefinition> RunDirectiveVisitors(
                     var maybeSameContext = visitor.TypeDefinition(directive, context);
 
                     // type removed
-                    if (maybeSameContext is null)
-                    {
-                        continue;
-                    }
+                    if (maybeSameContext is null) continue;
 
                     typeDefinition = maybeSameContext.TypeDefinition;
                 }
diff --git a/src/graphql/TypeSystem/SchemaExtensions.cs b/src/graphql/TypeSystem/SchemaExtensions.cs
index f3ada0c9e..c14b56917 100644
--- a/src/graphql/TypeSystem/SchemaExtensions.cs
+++ b/src/graphql/TypeSystem/SchemaExtensions.cs
@@ -5,64 +5,64 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public static class SchemaExtensions
 {
-    public static class SchemaExtensions
+    public static T GetRequiredNamedType<T>(this ISchema schema, string name) where T : TypeDefinition
     {
-        public static T GetRequiredNamedType<T>(this ISchema schema, string name) where T: TypeDefinition
-        {
-            return schema.GetNamedType(name) as T ??
-                   throw new ArgumentOutOfRangeException(nameof(name), $"Schema does not contain a named type '{name}'.");
-        }
+        return schema.GetNamedType(name) as T ??
+               throw new ArgumentOutOfRangeException(nameof(name), $"Schema does not contain a named type '{name}'.");
+    }
 
-        public static FieldDefinition GetRequiredField(this ISchema schema, string type, string fieldName)
-        {
-            return schema.GetField(type, fieldName) ?? 
-                   throw new ArgumentOutOfRangeException(nameof(fieldName), $"Schema does not contain a field '{type}.{fieldName}'.");
-        }
+    public static FieldDefinition GetRequiredField(this ISchema schema, string type, string fieldName)
+    {
+        return schema.GetField(type, fieldName) ??
+               throw new ArgumentOutOfRangeException(nameof(fieldName),
+                   $"Schema does not contain a field '{type}.{fieldName}'.");
+    }
 
-        public static IValueConverter GetRequiredValueConverter(this ISchema schema, string type)
-        {
-            return schema.GetValueConverter(type) ??
-                   throw new ArgumentOutOfRangeException(nameof(type), $"Schema does not contain a value converter for '{type}'.");
+    public static IValueConverter GetRequiredValueConverter(this ISchema schema, string type)
+    {
+        return schema.GetValueConverter(type) ??
+               throw new ArgumentOutOfRangeException(nameof(type),
+                   $"Schema does not contain a value converter for '{type}'.");
+    }
 
-        }
+    public static TypeSystemDocument ToTypeSystem(this ISchema schema)
+    {
+        var typeDefinitions = schema.QueryTypes<TypeDefinition>().ToList();
+        var directiveDefinitions = schema.QueryDirectiveTypes().ToList();
 
-        public static TypeSystemDocument ToTypeSystem(this ISchema schema)
-        {
-            var typeDefinitions = schema.QueryTypes<TypeDefinition>().ToList();
-            var directiveDefinitions = schema.QueryDirectiveTypes().ToList();
+        var schemaDefinition = schema.ToSchemaDefinition();
+        return new TypeSystemDocument(
+            new[] { schemaDefinition },
+            typeDefinitions,
+            directiveDefinitions);
+    }
 
-            var schemaDefinition = schema.ToSchemaDefinition();
-            return new TypeSystemDocument(
-                new []{schemaDefinition},
-                typeDefinitions,
-                directiveDefinitions);
-        }
+    public static SchemaDefinition ToSchemaDefinition(this ISchema schema)
+    {
+        return new SchemaDefinition(
+            null,
+            new Language.Nodes.Directives(schema.Directives.ToList()),
+            new RootOperationTypeDefinitions(GetOperations(schema).ToList()));
 
-        public static SchemaDefinition ToSchemaDefinition(this ISchema schema)
+        static IEnumerable<RootOperationTypeDefinition> GetOperations(ISchema schema)
         {
-            return new SchemaDefinition(
-                null,
-                new Language.Nodes.Directives(schema.Directives.ToList()),
-                new RootOperationTypeDefinitions(GetOperations(schema).ToList()));
+            yield return new RootOperationTypeDefinition(
+                OperationType.Query,
+                new NamedType(schema.Query.Name));
 
-            static IEnumerable<RootOperationTypeDefinition> GetOperations(ISchema schema)
-            {
+            if (schema.Mutation is not null)
                 yield return new RootOperationTypeDefinition(
-                    OperationType.Query,
-                    new NamedType(schema.Query.Name));
+                    OperationType.Mutation,
+                    new NamedType(schema.Mutation.Name));
 
-                if (schema.Mutation is not null)
-                    yield return new RootOperationTypeDefinition(
-                        OperationType.Mutation,
-                        new NamedType(schema.Mutation.Name));
-
-                if (schema.Subscription is not null)
-                    yield return new RootOperationTypeDefinition(
-                        OperationType.Mutation,
-                        new NamedType(schema.Subscription.Name));
-            }
+            if (schema.Subscription is not null)
+                yield return new RootOperationTypeDefinition(
+                    OperationType.Mutation,
+                    new NamedType(schema.Subscription.Name));
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/TypeDictionaryExtensions.cs b/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
index 2c43e1331..941e57dc6 100644
--- a/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
+++ b/src/graphql/TypeSystem/TypeDictionaryExtensions.cs
@@ -2,22 +2,21 @@
 using System.Diagnostics.CodeAnalysis;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public static class TypeDictionaryExtensions
 {
-    public static class TypeDictionaryExtensions
+    public static bool TryGetValue<T>(this IDictionary<string, TypeDefinition> types, string key,
+        [NotNullWhen(true)] out T? type)
+        where T : TypeDefinition
     {
-        public static bool TryGetValue<T>(this IDictionary<string, TypeDefinition> types, string key,
-            [NotNullWhen(true)] out T? type)
-            where T : TypeDefinition
+        if (types.TryGetValue(key, out var value))
         {
-            if (types.TryGetValue(key, out var value))
-            {
-                type = (T)value;
-                return true;
-            }
-
-            type = default;
-            return false;
+            type = (T)value;
+            return true;
         }
+
+        type = default;
+        return false;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/TypeExtensions.cs b/src/graphql/TypeSystem/TypeExtensions.cs
index a02391431..e72748c45 100644
--- a/src/graphql/TypeSystem/TypeExtensions.cs
+++ b/src/graphql/TypeSystem/TypeExtensions.cs
@@ -1,17 +1,16 @@
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.TypeSystem
+namespace Tanka.GraphQL.TypeSystem;
+
+public static class TypeExtensions
 {
-    public static class TypeExtensions 
+    public static NamedType Unwrap(this TypeBase type)
     {
-        public static NamedType Unwrap(this TypeBase type)
+        return type switch
         {
-            return type switch
-            {
-                NonNullType NonNullType => Unwrap(NonNullType.OfType),
-                ListType list => Unwrap(list.OfType),
-                _ => (NamedType)type
-            };
-        }
+            NonNullType NonNullType => Unwrap(NonNullType.OfType),
+            ListType list => Unwrap(list.OfType),
+            _ => (NamedType)type
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/BooleanConverter.cs b/src/graphql/TypeSystem/ValueSerialization/BooleanConverter.cs
index 52b4f5e02..aba79b4c3 100644
--- a/src/graphql/TypeSystem/ValueSerialization/BooleanConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/BooleanConverter.cs
@@ -2,62 +2,57 @@
 using System.Globalization;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public class BooleanConverter : IValueConverter
 {
-    public class BooleanConverter : IValueConverter
+    public object? Serialize(object? value)
     {
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            if (value is string str)
-            {
-                if (string.Equals("0", str, StringComparison.Ordinal))
-                    return false;
+        if (value == null)
+            return null;
 
-                if (string.Equals("1", str, StringComparison.Ordinal))
-                    return true;
-            }
+        if (value is string str)
+        {
+            if (string.Equals("0", str, StringComparison.Ordinal))
+                return false;
 
-            return Convert.ToBoolean(value, NumberFormatInfo.InvariantInfo);
+            if (string.Equals("1", str, StringComparison.Ordinal))
+                return true;
         }
 
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
+        return Convert.ToBoolean(value, NumberFormatInfo.InvariantInfo);
+    }
 
-            return new BooleanValue((bool)serializedValue);
-        }
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
 
-        public object? ParseValue(object? input)
-        {
-            if (input == null)
-                return null;
+        return new BooleanValue((bool)serializedValue);
+    }
 
-            return Convert.ToBoolean(input, NumberFormatInfo.InvariantInfo);
-        }
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
 
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-            {
-                return null;
-            }
+        return Convert.ToBoolean(input, NumberFormatInfo.InvariantInfo);
+    }
 
-            if (input.Kind == NodeKind.BooleanValue)
-            {
-                var inputBool = (BooleanValue) input;
-                var value = inputBool.Value;
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.NullValue) return null;
 
-                return value;
-            }
+        if (input.Kind == NodeKind.BooleanValue)
+        {
+            var inputBool = (BooleanValue)input;
+            var value = inputBool.Value;
 
-            throw new FormatException(
-                $"Cannot coerce Boolean value from '{input.Kind}'");
+            return value;
         }
+
+        throw new FormatException(
+            $"Cannot coerce Boolean value from '{input.Kind}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/DoubleConverter.cs b/src/graphql/TypeSystem/ValueSerialization/DoubleConverter.cs
index 4e9c5cb9d..7af5f762a 100644
--- a/src/graphql/TypeSystem/ValueSerialization/DoubleConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/DoubleConverter.cs
@@ -5,76 +5,72 @@
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public class DoubleConverter : IValueConverter
 {
-    public class DoubleConverter : IValueConverter
+    public object? Serialize(object? value)
     {
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            return Convert.ToDouble(value, NumberFormatInfo.InvariantInfo);
-        }
+        if (value == null)
+            return null;
 
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
+        return Convert.ToDouble(value, NumberFormatInfo.InvariantInfo);
+    }
 
-            var buffer = ArrayPool<byte>.Shared.Rent(sizeof(double));
-            try
-            {
-                var span = buffer.AsSpan();
-                if (Utf8Formatter.TryFormat((double) serializedValue, span, out int bytesWritten))
-                {
-                    var bytes = span.Slice(0, bytesWritten).ToArray();
-                    return new FloatValue(bytes, false);
-                }
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
 
-                throw new FormatException($"Cannot serialize value of '{value} as double");
-            }
-            finally
+        var buffer = ArrayPool<byte>.Shared.Rent(sizeof(double));
+        try
+        {
+            var span = buffer.AsSpan();
+            if (Utf8Formatter.TryFormat((double)serializedValue, span, out var bytesWritten))
             {
-                ArrayPool<byte>.Shared.Return(buffer);
+                var bytes = span.Slice(0, bytesWritten).ToArray();
+                return new FloatValue(bytes, false);
             }
-        }
 
-        public object? ParseValue(object? input)
+            throw new FormatException($"Cannot serialize value of '{value} as double");
+        }
+        finally
         {
-            if (input == null)
-                return null;
-
-            return Convert.ToDouble(input, NumberFormatInfo.InvariantInfo);
+            ArrayPool<byte>.Shared.Return(buffer);
         }
+    }
 
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-            {
-                return null;
-            }
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
 
-            if (input.Kind == NodeKind.FloatValue)
-            {
-                var doubleValue = (FloatValue) input;
+        return Convert.ToDouble(input, NumberFormatInfo.InvariantInfo);
+    }
 
-                if (!Utf8Parser.TryParse(doubleValue.ValueSpan, out double d, out _))
-                    throw new FormatException($"Could not parse value '{Encoding.UTF8.GetString(doubleValue.ValueSpan)}' as double");
-                
-                return d;
-            }
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.NullValue) return null;
 
-            if (input.Kind == NodeKind.IntValue)
-            {
-                var intValue = (IntValue) input;
-                return (double)intValue.Value;
-            }
+        if (input.Kind == NodeKind.FloatValue)
+        {
+            var doubleValue = (FloatValue)input;
 
-            throw new FormatException(
-                $"Cannot coerce Float value from '{input.Kind}'");
+            if (!Utf8Parser.TryParse(doubleValue.ValueSpan, out double d, out _))
+                throw new FormatException(
+                    $"Could not parse value '{Encoding.UTF8.GetString(doubleValue.ValueSpan)}' as double");
+
+            return d;
         }
+
+        if (input.Kind == NodeKind.IntValue)
+        {
+            var intValue = (IntValue)input;
+            return (double)intValue.Value;
+        }
+
+        throw new FormatException(
+            $"Cannot coerce Float value from '{input.Kind}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs b/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
index 411938245..81507a444 100644
--- a/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/EnumConverter.cs
@@ -4,57 +4,56 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
+
+public class EnumConverter : IValueConverter
 {
-    public class EnumConverter : IValueConverter
+    private readonly EnumDefinition _enumDefinition;
+
+    public EnumConverter(EnumDefinition enumDefinition)
+    {
+        _enumDefinition = enumDefinition;
+    }
+
+    public object? Serialize(object? value)
+    {
+        if (value == null)
+            return null;
+
+        var enumValue = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(value));
+        return enumValue?.Value.Name.Value;
+    }
+
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
+
+        return new EnumValue((string)serializedValue);
+    }
+
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
+
+        var stringInput = Convert.ToString(input, CultureInfo.InvariantCulture)
+            ?.ToUpperInvariant();
+
+        if (stringInput == null) return null;
+
+        var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(stringInput));
+        return value?.Value.Name;
+    }
+
+    public object? ParseLiteral(ValueBase input)
     {
-        private readonly EnumDefinition _enumDefinition;
-
-        public EnumConverter(EnumDefinition enumDefinition)
-        {
-            _enumDefinition = enumDefinition;
-        }
-
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            var enumValue = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(value));
-            return enumValue?.Value.Name.Value;
-        }
-
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
-
-            return new EnumValue((string)serializedValue);
-        }
-
-        public object? ParseValue(object? input)
-        {
-            if (input == null)
-                return null;
-
-            var stringInput = Convert.ToString(input, CultureInfo.InvariantCulture)
-                ?.ToUpperInvariant();
-
-            if (stringInput == null) return null;
-
-            var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(stringInput));
-            return value?.Value.Name;
-        }
-
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-                return null;
-
-            var enumValue = (EnumValue)input;
-            var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(enumValue));
-            return value?.Value;
-        }
+        if (input.Kind == NodeKind.NullValue)
+            return null;
+
+        var enumValue = (EnumValue)input;
+        var value = _enumDefinition.Values?.SingleOrDefault(v => v.Value.Equals(enumValue));
+        return value?.Value;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/IValueConverter.cs b/src/graphql/TypeSystem/ValueSerialization/IValueConverter.cs
index 2bfc17a60..8417087ce 100644
--- a/src/graphql/TypeSystem/ValueSerialization/IValueConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/IValueConverter.cs
@@ -1,42 +1,39 @@
-
+using Tanka.GraphQL.Language.Nodes;
 
-using Tanka.GraphQL.Language.Nodes;
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+/// <summary>
+///     See http://facebook.github.io/graphql/#sec-Scalars
+/// </summary>
+/// <typeparam name="I"></typeparam>
+/// <typeparam name="O"></typeparam>
+public interface IValueConverter
 {
     /// <summary>
-    ///     See http://facebook.github.io/graphql/#sec-Scalars
+    ///     Serialize input value into actual value
     /// </summary>
-    /// <typeparam name="I"></typeparam>
-    /// <typeparam name="O"></typeparam>
-    public interface IValueConverter
-    {
-        /// <summary>
-        ///     Serialize input value into actual value
-        /// </summary>
-        /// <param name="value"></param>
-        /// <returns></returns>
-        object? Serialize(object? value);
+    /// <param name="value"></param>
+    /// <returns></returns>
+    object? Serialize(object? value);
 
-        /// <summary>
-        ///     Serialize input value into printable value node
-        /// </summary>
-        /// <param name="value"></param>
-        /// <returns></returns>
-        ValueBase SerializeLiteral(object? value);
+    /// <summary>
+    ///     Serialize input value into printable value node
+    /// </summary>
+    /// <param name="value"></param>
+    /// <returns></returns>
+    ValueBase SerializeLiteral(object? value);
 
-        /// <summary>
-        ///     Parse query variable into actual value
-        /// </summary>
-        /// <param name="input"></param>
-        /// <returns></returns>
-        object? ParseValue(object? input);
+    /// <summary>
+    ///     Parse query variable into actual value
+    /// </summary>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    object? ParseValue(object? input);
 
-        /// <summary>
-        ///     Parse input value into actual value
-        /// </summary>
-        /// <param name="input"></param>
-        /// <returns></returns>
-        object? ParseLiteral(ValueBase input);
-    }
+    /// <summary>
+    ///     Parse input value into actual value
+    /// </summary>
+    /// <param name="input"></param>
+    /// <returns></returns>
+    object? ParseLiteral(ValueBase input);
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/IdConverter.cs b/src/graphql/TypeSystem/ValueSerialization/IdConverter.cs
index eb77a13e1..8d33eb7d7 100644
--- a/src/graphql/TypeSystem/ValueSerialization/IdConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/IdConverter.cs
@@ -3,48 +3,43 @@
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public class IdConverter : IValueConverter
 {
-    public class IdConverter : IValueConverter
+    public object? Serialize(object? value)
     {
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            return Convert.ToString(value, CultureInfo.InvariantCulture);
-        }
-
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
-
-            return new StringValue(Encoding.UTF8.GetBytes((string)serializedValue));
-        }
-
-        public object? ParseValue(object? input)
-        {
-            if (input == null)
-                return null;
-
-            return Convert.ToString(input, CultureInfo.InvariantCulture);
-        }
-
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-            {
-                return null;
-            }
-
-            if (input.Kind == NodeKind.StringValue) 
-                return (StringValue)input.ToString();
-
-            throw new FormatException(
-                $"Cannot coerce Id value from '{input.Kind}'");
-        }
+        if (value == null)
+            return null;
+
+        return Convert.ToString(value, CultureInfo.InvariantCulture);
+    }
+
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
+
+        return new StringValue(Encoding.UTF8.GetBytes((string)serializedValue));
+    }
+
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
+
+        return Convert.ToString(input, CultureInfo.InvariantCulture);
+    }
+
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.NullValue) return null;
+
+        if (input.Kind == NodeKind.StringValue)
+            return (StringValue)input.ToString();
+
+        throw new FormatException(
+            $"Cannot coerce Id value from '{input.Kind}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/InlineConverter.cs b/src/graphql/TypeSystem/ValueSerialization/InlineConverter.cs
index 6645ca854..7573ec85a 100644
--- a/src/graphql/TypeSystem/ValueSerialization/InlineConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/InlineConverter.cs
@@ -1,47 +1,45 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public sealed class InlineConverter : IValueConverter
 {
-    public sealed class InlineConverter : IValueConverter
-    {
-        private readonly Func<ValueBase, object?> _parseLiteral;
-        private readonly Func<object?, object?> _parseValue;
-        private readonly Func<object?, object?> _serialize;
-        private readonly Func<object?, ValueBase> _serializeLiteral;
+    private readonly Func<ValueBase, object?> _parseLiteral;
+    private readonly Func<object?, object?> _parseValue;
+    private readonly Func<object?, object?> _serialize;
+    private readonly Func<object?, ValueBase> _serializeLiteral;
 
-        public InlineConverter(
-            Func<object?, object> serialize,
-            Func<object?, ValueBase> serializeLiteral,
-            Func<object?, object?> parseValue,
-            Func<ValueBase, object?> parseLiteral
-        )
-        {
-            _serialize = serialize ?? throw new ArgumentNullException(nameof(serialize));
-            _serializeLiteral = serializeLiteral ?? throw new ArgumentNullException(nameof(serializeLiteral)); 
-            _parseValue = parseValue ?? throw new ArgumentNullException(nameof(parseValue));
-            _parseLiteral = parseLiteral ?? throw new ArgumentNullException(nameof(parseLiteral));
-        }
+    public InlineConverter(
+        Func<object?, object> serialize,
+        Func<object?, ValueBase> serializeLiteral,
+        Func<object?, object?> parseValue,
+        Func<ValueBase, object?> parseLiteral
+    )
+    {
+        _serialize = serialize ?? throw new ArgumentNullException(nameof(serialize));
+        _serializeLiteral = serializeLiteral ?? throw new ArgumentNullException(nameof(serializeLiteral));
+        _parseValue = parseValue ?? throw new ArgumentNullException(nameof(parseValue));
+        _parseLiteral = parseLiteral ?? throw new ArgumentNullException(nameof(parseLiteral));
+    }
 
-        public object? Serialize(object? value)
-        {
-            return _serialize(value);
-        }
+    public object? Serialize(object? value)
+    {
+        return _serialize(value);
+    }
 
-        public ValueBase SerializeLiteral(object? value)
-        {
-            return _serializeLiteral(value);
-        }
+    public ValueBase SerializeLiteral(object? value)
+    {
+        return _serializeLiteral(value);
+    }
 
-        public object? ParseValue(object? input)
-        {
-            return _parseValue(input);
-        }
+    public object? ParseValue(object? input)
+    {
+        return _parseValue(input);
+    }
 
-        public object? ParseLiteral(ValueBase input)
-        {
-            return _parseLiteral(input);
-        }
+    public object? ParseLiteral(ValueBase input)
+    {
+        return _parseLiteral(input);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/IntConverter.cs b/src/graphql/TypeSystem/ValueSerialization/IntConverter.cs
index 9f7413069..4f4466c2f 100644
--- a/src/graphql/TypeSystem/ValueSerialization/IntConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/IntConverter.cs
@@ -1,52 +1,43 @@
 using System;
 using System.Globalization;
-using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public class IntConverter : IValueConverter
 {
-    public class IntConverter : IValueConverter
+    public object? Serialize(object? value)
     {
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            return Convert.ToInt32(value, NumberFormatInfo.InvariantInfo);
-        }
-
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
-
-            return new IntValue((int) serializedValue);
-        }
-
-        public object? ParseValue(object? input)
-        {
-            if (input == null)
-                return null;
-
-            return Convert.ToInt32(input, NumberFormatInfo.InvariantInfo);
-        }
-
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-            {
-                return null;
-            }
-
-            if (input.Kind == NodeKind.IntValue)
-            {
-                return ((IntValue) input).Value;
-            }
-
-            throw new FormatException(
-                $"Cannot coerce Int value from '{input.Kind}'");
-        }
+        if (value == null)
+            return null;
+
+        return Convert.ToInt32(value, NumberFormatInfo.InvariantInfo);
+    }
+
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
+
+        return new IntValue((int)serializedValue);
+    }
+
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
+
+        return Convert.ToInt32(input, NumberFormatInfo.InvariantInfo);
+    }
+
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.NullValue) return null;
+
+        if (input.Kind == NodeKind.IntValue) return ((IntValue)input).Value;
+
+        throw new FormatException(
+            $"Cannot coerce Int value from '{input.Kind}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql/TypeSystem/ValueSerialization/StringConverter.cs b/src/graphql/TypeSystem/ValueSerialization/StringConverter.cs
index d21564b55..cd2bb4f9a 100644
--- a/src/graphql/TypeSystem/ValueSerialization/StringConverter.cs
+++ b/src/graphql/TypeSystem/ValueSerialization/StringConverter.cs
@@ -3,48 +3,43 @@
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.TypeSystem.ValueSerialization
+public class StringConverter : IValueConverter
 {
-    public class StringConverter : IValueConverter
+    public object? Serialize(object? value)
     {
-        public object? Serialize(object? value)
-        {
-            if (value == null)
-                return null;
-
-            return Convert.ToString(value, CultureInfo.InvariantCulture);
-        }
-
-        public ValueBase SerializeLiteral(object? value)
-        {
-            var serializedValue = Serialize(value);
-            if (serializedValue == null)
-                return new NullValue();
-
-            return new StringValue(Encoding.UTF8.GetBytes((string)serializedValue));
-        }
-
-        public object? ParseValue(object? input)
-        {
-            if (input == null)
-                return null;
-
-            return Convert.ToString(input, CultureInfo.InvariantCulture);
-        }
-
-        public object? ParseLiteral(ValueBase input)
-        {
-            if (input.Kind == NodeKind.NullValue)
-            {
-                return null;
-            }
-
-            if (input.Kind == NodeKind.StringValue) 
-                return ((StringValue)input).ToString();
-
-            throw new FormatException(
-                $"Cannot coerce String value from '{input.Kind}'");
-        }
+        if (value == null)
+            return null;
+
+        return Convert.ToString(value, CultureInfo.InvariantCulture);
+    }
+
+    public ValueBase SerializeLiteral(object? value)
+    {
+        var serializedValue = Serialize(value);
+        if (serializedValue == null)
+            return new NullValue();
+
+        return new StringValue(Encoding.UTF8.GetBytes((string)serializedValue));
+    }
+
+    public object? ParseValue(object? input)
+    {
+        if (input == null)
+            return null;
+
+        return Convert.ToString(input, CultureInfo.InvariantCulture);
+    }
+
+    public object? ParseLiteral(ValueBase input)
+    {
+        if (input.Kind == NodeKind.NullValue) return null;
+
+        if (input.Kind == NodeKind.StringValue)
+            return ((StringValue)input).ToString();
+
+        throw new FormatException(
+            $"Cannot coerce String value from '{input.Kind}'");
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/CombineRule.cs b/src/graphql/Validation/CombineRule.cs
index 59844249b..9bd0628b5 100644
--- a/src/graphql/Validation/CombineRule.cs
+++ b/src/graphql/Validation/CombineRule.cs
@@ -1,4 +1,3 @@
-namespace Tanka.GraphQL.Validation
-{
-    public delegate void CombineRule(IRuleVisitorContext context, RuleVisitor rule);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.Validation;
+
+public delegate void CombineRule(IRuleVisitorContext context, RuleVisitor rule);
\ No newline at end of file
diff --git a/src/graphql/Validation/ExecutionRules.cs b/src/graphql/Validation/ExecutionRules.cs
index 984bc9a85..74c9ecab5 100644
--- a/src/graphql/Validation/ExecutionRules.cs
+++ b/src/graphql/Validation/ExecutionRules.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Linq;
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language;
@@ -42,15 +41,15 @@ public static class ExecutionRules
         R562InputObjectFieldNames(),
         R563InputObjectFieldUniqueness(),
         R564InputObjectRequiredFields(),
-        
+
         R571And573Directives(),
         R572DirectivesAreInValidLocations(),
 
-        
+
         R581And582Variables(),
         R583AllVariableUsesDefined(),
         R584AllVariablesUsed(),
-        R585AllVariableUsagesAreAllowed(),
+        R585AllVariableUsagesAreAllowed()
     };
 
 
@@ -200,7 +199,7 @@ public static CombineRule R5231SingleRootField()
             };
         };
     }
-    
+
     /// <summary>
     ///     For each selection in the document.
     ///     Let fieldName be the target field of selection
@@ -242,10 +241,7 @@ public static CombineRule R532FieldSelectionMerging()
         return (context, rule) =>
         {
             var validator = new FieldSelectionMergingValidator(context);
-            rule.EnterSelectionSet += selectionSet =>
-            {
-                validator.Validate(selectionSet);
-            };
+            rule.EnterSelectionSet += selectionSet => { validator.Validate(selectionSet); };
         };
     }
 
@@ -318,7 +314,7 @@ public static CombineRule R533LeafFieldSelections()
             };
         };
     }
-    
+
     /// <summary>
     ///     For each argument in the document
     ///     Let argumentName be the Name of argument.
@@ -375,9 +371,9 @@ ArgumentsDefinition GetFieldArgumentDefinitions(IRuleVisitorContext context)
         ArgumentsDefinition GetDirectiveArgumentDefinitions(IRuleVisitorContext context)
         {
             var definitions = context
-                                  .Tracker
-                                  .DirectiveDefinition
-                                  ?.Arguments;
+                .Tracker
+                .DirectiveDefinition
+                ?.Arguments;
 
             if (definitions == null)
                 return ArgumentsDefinition.None;
@@ -387,7 +383,7 @@ ArgumentsDefinition GetDirectiveArgumentDefinitions(IRuleVisitorContext context)
 
         void ValidateArguments(
             ArgumentsDefinition argumentDefinitions,
-            IReadOnlyList<Argument> arguments, 
+            IReadOnlyList<Argument> arguments,
             IRuleVisitorContext ruleVisitorContext)
         {
             foreach (var argumentDefinition in argumentDefinitions)
@@ -433,7 +429,7 @@ void ValidateArguments(
             rule.EnterFieldSelection += field =>
             {
                 var args = field.Arguments;
-                var argumentDefinitions = 
+                var argumentDefinitions =
                     GetFieldArgumentDefinitions(context);
 
                 ValidateArguments(argumentDefinitions, args ?? Arguments.None, context);
@@ -441,7 +437,7 @@ void ValidateArguments(
             rule.EnterDirective += directive =>
             {
                 var args = directive.Arguments;
-                var argumentDefinitions = 
+                var argumentDefinitions =
                     GetDirectiveArgumentDefinitions(context);
 
                 ValidateArguments(argumentDefinitions, args ?? Arguments.None, context);
@@ -477,7 +473,7 @@ public static CombineRule R542ArgumentUniqueness()
             };
         };
     }
-    
+
     /// <summary>
     ///     For each fragment definition fragment in the document
     ///     Let fragmentName be the name of fragment.
@@ -619,13 +615,11 @@ public static CombineRule R5521FragmentSpreadTargetDefined()
                 var fragment = context.GetFragment(node.FragmentName);
 
                 if (fragment == null)
-                {
                     context.Error(
                         ValidationErrorCodes.R5521FragmentSpreadTargetDefined,
-                        $"Named fragment spreads must refer to fragments " +
-                        $"defined within the document. " +
+                        "Named fragment spreads must refer to fragments " +
+                        "defined within the document. " +
                         $"Fragment '{node.FragmentName}' not found");
-                }
             };
         };
     }
@@ -640,7 +634,7 @@ public static CombineRule R5522FragmentSpreadsMustNotFormCycles()
             // Position in the spread path
             var spreadPathIndexByName = new Dictionary<string, int?>();
             var fragments = context.Document.FragmentDefinitions;
-            
+
             rule.EnterFragmentDefinition += node =>
             {
                 DetectCycleRecursive(
@@ -666,7 +660,7 @@ IEnumerable<FragmentSpread> GetFragmentSpreads(SelectionSet node)
         {
             var spreads = new List<FragmentSpread>();
 
-            var setsToVisit = new Stack<SelectionSet>(new[] {node});
+            var setsToVisit = new Stack<SelectionSet>(new[] { node });
 
             while (setsToVisit.Any())
             {
@@ -693,7 +687,7 @@ void DetectCycleRecursive(
         {
             if (fragments == null)
                 return;
-            
+
             var fragmentName = fragment.FragmentName;
             if (visitedFrags.Contains(fragmentName))
                 return;
@@ -763,8 +757,8 @@ public static CombineRule R5523FragmentSpreadIsPossible()
         return (context, rule) =>
         {
             var fragments = context.Document.FragmentDefinitions
-                ?.ToDictionary(f => f.FragmentName)
-                ?? new Dictionary<Name, FragmentDefinition>(0);
+                                ?.ToDictionary(f => f.FragmentName)
+                            ?? new Dictionary<Name, FragmentDefinition>(0);
 
             rule.EnterFragmentSpread += node =>
             {
@@ -773,19 +767,15 @@ public static CombineRule R5523FragmentSpreadIsPossible()
                 var parentType = context.Tracker.ParentType;
                 if (fragmentType is not null && parentType is not null)
                 {
-                    bool applicableTypes = false;
+                    var applicableTypes = false;
                     var parentTypePossibleTypes = GetPossibleTypes(parentType, context.Schema);
                     var fragmentTypePossibleTypes = GetPossibleTypes(fragmentType, context.Schema);
 
                     if (fragmentType is InterfaceDefinition && parentType is InterfaceDefinition)
-                    {
                         applicableTypes = parentTypePossibleTypes.Contains(fragmentType);
-                    }
                     else
-                    {
                         applicableTypes =
                             fragmentTypePossibleTypes.Intersect(parentTypePossibleTypes).Any();
-                    }
 
                     if (!applicableTypes)
                         context.Error(
@@ -845,23 +835,23 @@ public static CombineRule R5523FragmentSpreadIsPossible()
                 }
             };
         };
-        
+
         IEnumerable<TypeDefinition> GetPossibleTypes(TypeDefinition type, ISchema schema)
         {
             switch (type)
             {
                 case ObjectDefinition objectDefinition:
-                    return new[] {objectDefinition};
+                    return new[] { objectDefinition };
                 case InterfaceDefinition interfaceType:
                     return schema.GetPossibleTypes(interfaceType);
                 case UnionDefinition unionDefinition:
                     return schema.GetPossibleTypes(unionDefinition);
-                default: 
+                default:
                     return Enumerable.Empty<TypeDefinition>();
             }
         }
     }
-    
+
     public static CombineRule R561ValuesOfCorrectType()
     {
         return (context, rule) =>
@@ -869,10 +859,7 @@ public static CombineRule R561ValuesOfCorrectType()
             //todo: there's an objectkind for nullvalue but no type
             //rule.EnterNullValue += node => { };
 
-            rule.EnterListValue += node =>
-            {
-                IsValidScalar(context, node);
-            };
+            rule.EnterListValue += node => { IsValidScalar(context, node); };
             rule.EnterObjectValue += node =>
             {
                 var type = context.Tracker.InputType;
@@ -887,7 +874,7 @@ public static CombineRule R561ValuesOfCorrectType()
                     f => f.Name);
 
                 foreach (var fieldDef in context.Schema.GetInputFields(
-                    inputType.Name))
+                             inputType.Name))
                 {
                     var fieldNode = fieldNodeMap.ContainsKey(fieldDef.Key);
                     if (!fieldNode && fieldDef.Value.Type is NonNullType NonNullType)
@@ -897,7 +884,7 @@ public static CombineRule R561ValuesOfCorrectType()
                                 type.ToString(),
                                 fieldDef.Key,
                                 NonNullType.ToString()),
-                            (INode) node);
+                            (INode)node);
                 }
             };
             rule.EnterObjectField += node =>
@@ -922,7 +909,6 @@ public static CombineRule R561ValuesOfCorrectType()
                     IsValidScalar(context, node);
 
                 else
-                {
                     try
                     {
                         var value = new EnumConverter(type).ParseLiteral(node);
@@ -941,7 +927,6 @@ public static CombineRule R561ValuesOfCorrectType()
                                 Printer.Print(node),
                                 string.Empty));
                     }
-                }
             };
             rule.EnterIntValue += node => IsValidScalar(context, node);
             rule.EnterFloatValue += node => IsValidScalar(context, node);
@@ -1005,8 +990,8 @@ void IsValidScalar(
             try
             {
                 var converter = context.Schema.GetValueConverter(type.Name) ?? throw new ValueCoercionException(
-                    $"Value converter for '{Printer.Print(type)}' not found from schema.", 
-                    type, 
+                    $"Value converter for '{Printer.Print(type)}' not found from schema.",
+                    type,
                     type);
 
                 converter.ParseLiteral(node);
@@ -1105,7 +1090,7 @@ public static CombineRule R564InputObjectRequiredFields()
                                 "does not have a default value. Otherwise, the input object field " +
                                 "is optional. " +
                                 $"Field '{nonNullType}.{fieldName}' is required.",
-                                (INode) node);
+                                (INode)node);
 
                             return;
                         }
@@ -1126,7 +1111,7 @@ public static CombineRule R564InputObjectRequiredFields()
         };
     }
 
-    
+
     /// <summary>
     ///     5.7.1, 5.7.3
     /// </summary>
@@ -1211,17 +1196,15 @@ void CheckDirectives(
                 var validLocations = directiveType.DirectiveLocations;
 
                 if (!validLocations.Contains(currentLocation))
-                {
                     context.Error(
                         ValidationErrorCodes.R572DirectivesAreInValidLocations,
-                        $"GraphQL servers define what directives they support " +
-                        $"and where they support them. For each usage of a directive, " +
-                        $"the directive must be used in a location that the server has " +
-                        $"declared support for. " +
+                        "GraphQL servers define what directives they support " +
+                        "and where they support them. For each usage of a directive, " +
+                        "the directive must be used in a location that the server has " +
+                        "declared support for. " +
                         $"Directive '{directive.Name.Value}' is in invalid location " +
                         $"'{currentLocation}'. Valid locations: '{string.Join(",", validLocations)}'",
                         directive);
-                }
             }
         }
 
@@ -1230,7 +1213,7 @@ string GetLocation(INode appliedTo)
             switch (appliedTo.Kind)
             {
                 case NodeKind.OperationDefinition:
-                    switch (((OperationDefinition) appliedTo).Operation)
+                    switch (((OperationDefinition)appliedTo).Operation)
                     {
                         case OperationType.Query:
                             return ExecutableDirectiveLocations.QUERY;
@@ -1250,7 +1233,7 @@ string GetLocation(INode appliedTo)
                 case NodeKind.FragmentDefinition:
                     return ExecutableDirectiveLocations.FRAGMENT_DEFINITION;
                 case NodeKind.VariableDefinition:
-                    throw new InvalidOperationException($"Not supported");
+                    throw new InvalidOperationException("Not supported");
                 case NodeKind.SchemaDefinition:
                 case NodeKind.SchemaExtension:
                     return TypeSystemDirectiveLocations.SCHEMA;
@@ -1286,7 +1269,7 @@ string GetLocation(INode appliedTo)
         }
     }
 
-    
+
     /// <summary>
     ///     5.8.1, 5.8.2
     /// </summary>
@@ -1321,7 +1304,7 @@ public static CombineRule R581And582Variables()
 
                     // 5.8.2
                     var variableType = Ast.UnwrapAndResolveType(context.Schema, variableUsage.Type);
-                    if (variableType is null ||!TypeIs.IsInputType(variableType))
+                    if (variableType is null || !TypeIs.IsInputType(variableType))
                         context.Error(
                             ValidationErrorCodes.R582VariablesAreInputTypes,
                             "Variables can only be input types. Objects, unions, " +
@@ -1352,19 +1335,15 @@ public static CombineRule R583AllVariableUsesDefined()
                     .ToList();
 
                 foreach (var usage in usages)
-                {
                     if (!variableDefinitions.Contains(usage))
-                    {
                         context.Error(
                             ValidationErrorCodes.R583AllVariableUsesDefined,
-                            $"Variables are scoped on a per‐operation basis. " +
-                            $"That means that any variable used within the context of " +
-                            $"an operation must be defined at the top level of that operation. " +
+                            "Variables are scoped on a per‐operation basis. " +
+                            "That means that any variable used within the context of " +
+                            "an operation must be defined at the top level of that operation. " +
                             $"Variable use '{usage}' is not defined.",
                             node
                         );
-                    }
-                }
             };
         };
     }
@@ -1376,10 +1355,7 @@ public static CombineRule R584AllVariablesUsed()
             var variableDefinitions = new List<VariableDefinition>();
 
             rule.EnterVariableDefinition += node => variableDefinitions.Add(node);
-            rule.EnterOperationDefinition += node =>
-            {
-                variableDefinitions.Clear();
-            };
+            rule.EnterOperationDefinition += node => { variableDefinitions.Clear(); };
             rule.LeaveOperationDefinition += node =>
             {
                 var usages = context.GetRecursiveVariables(node)
@@ -1391,17 +1367,15 @@ public static CombineRule R584AllVariablesUsed()
                     var variableName = variableDefinition.Variable.Name.Value;
 
                     if (!usages.Contains(variableName))
-                    {
                         context.Error(
                             ValidationErrorCodes.R584AllVariablesUsed,
-                            $"All variables defined by an operation " +
-                            $"must be used in that operation or a fragment " +
-                            $"transitively included by that operation. Unused " +
-                            $"variables cause a validation error. " +
+                            "All variables defined by an operation " +
+                            "must be used in that operation or a fragment " +
+                            "transitively included by that operation. Unused " +
+                            "variables cause a validation error. " +
                             $"Variable: '{variableName}' is not used.",
                             variableDefinition
-                            );
-                    }
+                        );
                 }
             };
         };
@@ -1433,10 +1407,7 @@ public static CombineRule R585AllVariableUsagesAreAllowed()
                 {
                     var variableName = usage.Variable.Name;
 
-                    if (!variableDefinitions.TryGetValue(variableName, out var variableDefinition))
-                    {
-                        return;
-                    }
+                    if (!variableDefinitions.TryGetValue(variableName, out var variableDefinition)) return;
 
                     if (!AllowedVariableUsage(
                             context.Schema,
@@ -1444,13 +1415,11 @@ public static CombineRule R585AllVariableUsagesAreAllowed()
                             variableDefinition?.DefaultValue,
                             usage.Type,
                             usage.DefaultValue))
-                    {
                         context.Error(
                             ValidationErrorCodes.R585AllVariableUsagesAreAllowed,
-                            $"Variable usages must be compatible with the arguments they are passed to. " +
+                            "Variable usages must be compatible with the arguments they are passed to. " +
                             $"Variable '{variableName}' of type '{variableDefinition?.Type}' used in " +
                             $"position expecting type '{usage.Type}'");
-                    }
                 }
             };
         };
@@ -1465,13 +1434,10 @@ bool AllowedVariableUsage(
         {
             if (locationType is NonNullType nonNullTypeTypeLocationType && varType is not NonNullType)
             {
-                bool hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
-                bool hasLocationDefaultValue = locationDefaultValue != null;
+                var hasNonNullTypeTypeVariableDefaultValue = varDefaultValue != null;
+                var hasLocationDefaultValue = locationDefaultValue != null;
 
-                if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue)
-                {
-                    return false;
-                }
+                if (!hasNonNullTypeTypeVariableDefaultValue && !hasLocationDefaultValue) return false;
 
                 var nullableLocationType = nonNullTypeTypeLocationType.OfType;
                 return IsTypeSubTypeOf(schema, varType, nullableLocationType);
@@ -1489,57 +1455,47 @@ TypeBase superType
         {
             // Equivalent type is a valid subtype
             if (maybeSubType is NamedType namedSubType && superType is NamedType namedSuperType)
-            {
                 if (namedSubType.Name.Equals(namedSuperType.Name))
                     return true;
-            }
 
             // If superType is non-null, maybeSubType must also be non-null.
             if (superType is NonNullType nonNullTypeTypeSuperType)
             {
                 if (maybeSubType is NonNullType nonNullTypeTypeMaybeSubType)
-                {
                     return IsTypeSubTypeOf(
                         schema,
                         nonNullTypeTypeMaybeSubType.OfType,
                         nonNullTypeTypeSuperType.OfType);
-                }
 
                 return false;
             }
 
             if (maybeSubType is NonNullType nonNullTypeTypeMaybeSubType2)
-            {
                 // If superType is nullable, maybeSubType may be non-null or nullable.
                 return IsTypeSubTypeOf(schema, nonNullTypeTypeMaybeSubType2.OfType, superType);
-            }
 
             // If superType type is a list, maybeSubType type must also be a list.
             if (superType is ListType listSuperType)
             {
                 if (maybeSubType is ListType listMaybeSubType)
-                {
                     return IsTypeSubTypeOf(
                         schema,
                         listMaybeSubType.OfType,
                         listSuperType.OfType);
-                }
 
                 return false;
             }
 
             if (maybeSubType is ListType)
-            {
                 // If superType is not a list, maybeSubType must also be not a list.
                 return false;
-            }
 
             // If superType type is an abstract type, maybeSubType type may be a currently
             // possible object type.
             var superTypeDefinition = schema.GetNamedType(superType.Unwrap().Name);
             var maybeSubTypeDefinition = schema.GetNamedType(maybeSubType.Unwrap().Name);
 
-            var possibleTypes  = superTypeDefinition switch
+            var possibleTypes = superTypeDefinition switch
             {
                 null => Enumerable.Empty<TypeDefinition>(),
                 InterfaceDefinition interfaceDefinition => schema.GetPossibleTypes(interfaceDefinition),
diff --git a/src/graphql/Validation/ExtensionData.cs b/src/graphql/Validation/ExtensionData.cs
index b4fa08092..a7ff4d34e 100644
--- a/src/graphql/Validation/ExtensionData.cs
+++ b/src/graphql/Validation/ExtensionData.cs
@@ -1,16 +1,15 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class ExtensionData
 {
-    public class ExtensionData
-    {
-        private readonly Dictionary<string, object> _data = new Dictionary<string, object>();
+    private readonly Dictionary<string, object> _data = new();
 
-        public void Set(string key, object data)
-        {
-            _data[key] = data;
-        }
+    public IReadOnlyDictionary<string, object> Data => _data;
 
-        public IReadOnlyDictionary<string, object> Data => _data;
+    public void Set(string key, object data)
+    {
+        _data[key] = data;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/FieldSelectionMergingValidator.cs b/src/graphql/Validation/FieldSelectionMergingValidator.cs
index 09b17b67d..a1ab269fe 100644
--- a/src/graphql/Validation/FieldSelectionMergingValidator.cs
+++ b/src/graphql/Validation/FieldSelectionMergingValidator.cs
@@ -7,393 +7,379 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class FieldSelectionMergingValidator
 {
-    public class FieldSelectionMergingValidator
-    {
-        private readonly IRuleVisitorContext _context;
+    private readonly IRuleVisitorContext _context;
 
-        public FieldSelectionMergingValidator(IRuleVisitorContext context)
-        {
-            _context = context;
-        }
+    public FieldSelectionMergingValidator(IRuleVisitorContext context)
+    {
+        _context = context;
+    }
 
-        public void Validate(SelectionSet selectionSet)
-        {
-            if (_context.Tracker.ParentType is null)
-                return;
+    public void Validate(SelectionSet selectionSet)
+    {
+        if (_context.Tracker.ParentType is null)
+            return;
+
+        var comparedFragmentPairs = new PairSet();
+        var cachedFieldsAndFragmentNames = new Dictionary<SelectionSet, CachedField>();
+        var conflicts = FindConflictsWithinSelectionSet(
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            _context.Tracker.ParentType ?? throw new InvalidOperationException("todo: ParentType is null"),
+            selectionSet);
+
+        foreach (var conflict in conflicts)
+            _context.Error(
+                ValidationErrorCodes.R532FieldSelectionMerging,
+                FieldsConflictMessage(conflict.Reason.Name, conflict.Reason),
+                conflict.FieldsLeft.Concat(conflict.FieldsRight)
+            );
+    }
 
-            var comparedFragmentPairs = new PairSet();
-            var cachedFieldsAndFragmentNames = new Dictionary<SelectionSet, CachedField>();
-            var conflicts = FindConflictsWithinSelectionSet(
-                cachedFieldsAndFragmentNames,
-                comparedFragmentPairs,
-                _context.Tracker.ParentType ?? throw new InvalidOperationException("todo: ParentType is null"),
-                selectionSet);
-
-            foreach (var conflict in conflicts)
-                _context.Error(
-                    ValidationErrorCodes.R532FieldSelectionMerging,
-                    FieldsConflictMessage(conflict.Reason.Name, conflict.Reason),
-                    conflict.FieldsLeft.Concat(conflict.FieldsRight)
-                );
-        }
+    private void CollectConflictsBetween(
+        List<Conflict> conflicts,
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        bool parentFieldsAreMutuallyExclusive,
+        Dictionary<string, List<FieldDefPair>> fieldMap1,
+        Dictionary<string, List<FieldDefPair>> fieldMap2)
+    {
+        // A field map is a keyed collection, where each key represents a response
+        // name and the value at that key is a list of all fields which provide that
+        // response name. For any response name which appears in both provided field
+        // maps, each field from the first field map must be compared to every field
+        // in the second field map to find potential conflicts.
 
-        private void CollectConflictsBetween(
-            List<Conflict> conflicts,
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            bool parentFieldsAreMutuallyExclusive,
-            Dictionary<string, List<FieldDefPair>> fieldMap1,
-            Dictionary<string, List<FieldDefPair>> fieldMap2)
+        foreach (var responseName in fieldMap1.Keys)
         {
-            // A field map is a keyed collection, where each key represents a response
-            // name and the value at that key is a list of all fields which provide that
-            // response name. For any response name which appears in both provided field
-            // maps, each field from the first field map must be compared to every field
-            // in the second field map to find potential conflicts.
+            fieldMap2.TryGetValue(responseName, out var fields2);
 
-            foreach (var responseName in fieldMap1.Keys)
+            if (fields2 != null && fields2.Count != 0)
             {
-                fieldMap2.TryGetValue(responseName, out var fields2);
-
-                if (fields2 != null && fields2.Count != 0)
+                var fields1 = fieldMap1[responseName];
+                for (var i = 0; i < fields1.Count; i++)
+                for (var j = 0; j < fields2.Count; j++)
                 {
-                    var fields1 = fieldMap1[responseName];
-                    for (var i = 0; i < fields1.Count; i++)
-                    for (var j = 0; j < fields2.Count; j++)
-                    {
-                        var conflict = FindConflict(
-                            cachedFieldsAndFragmentNames,
-                            comparedFragmentPairs,
-                            parentFieldsAreMutuallyExclusive,
-                            responseName,
-                            fields1[i],
-                            fields2[j]);
-
-                        if (conflict != null) conflicts.Add(conflict);
-                    }
+                    var conflict = FindConflict(
+                        cachedFieldsAndFragmentNames,
+                        comparedFragmentPairs,
+                        parentFieldsAreMutuallyExclusive,
+                        responseName,
+                        fields1[i],
+                        fields2[j]);
+
+                    if (conflict != null) conflicts.Add(conflict);
                 }
             }
         }
+    }
 
-        private void CollectConflictsBetweenFieldsAndFragment(
-            List<Conflict> conflicts,
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            ObjMap<bool> comparedFragments,
-            PairSet comparedFragmentPairs,
-            bool areMutuallyExclusive,
-            Dictionary<string, List<FieldDefPair>> fieldMap,
-            string fragmentName)
-        {
-            // Memoize so a fragment is not compared for conflicts more than once.
-            if (comparedFragments.ContainsKey(fragmentName)) return;
-
-            comparedFragments[fragmentName] = true;
-
-            var fragment = _context.Document
-                .FragmentDefinitions
-                ?.SingleOrDefault(f => f.FragmentName == fragmentName);
-
-            if (fragment == null) return;
+    private void CollectConflictsBetweenFieldsAndFragment(
+        List<Conflict> conflicts,
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        ObjMap<bool> comparedFragments,
+        PairSet comparedFragmentPairs,
+        bool areMutuallyExclusive,
+        Dictionary<string, List<FieldDefPair>> fieldMap,
+        string fragmentName)
+    {
+        // Memoize so a fragment is not compared for conflicts more than once.
+        if (comparedFragments.ContainsKey(fragmentName)) return;
 
-            var cachedField =
-                GetReferencedFieldsAndFragmentNames(
-                    cachedFieldsAndFragmentNames,
-                    fragment);
+        comparedFragments[fragmentName] = true;
 
-            var fieldMap2 = cachedField.NodeAndDef;
-            var fragmentNames2 = cachedField.Names;
+        var fragment = _context.Document
+            .FragmentDefinitions
+            ?.SingleOrDefault(f => f.FragmentName == fragmentName);
 
-            // Do not compare a fragment's fieldMap to itself.
-            if (fieldMap == fieldMap2) return;
+        if (fragment == null) return;
 
-            // (D) First collect any conflicts between the provided collection of fields
-            // and the collection of fields represented by the given fragment.
-            CollectConflictsBetween(
+        var cachedField =
+            GetReferencedFieldsAndFragmentNames(
+                cachedFieldsAndFragmentNames,
+                fragment);
+
+        var fieldMap2 = cachedField.NodeAndDef;
+        var fragmentNames2 = cachedField.Names;
+
+        // Do not compare a fragment's fieldMap to itself.
+        if (fieldMap == fieldMap2) return;
+
+        // (D) First collect any conflicts between the provided collection of fields
+        // and the collection of fields represented by the given fragment.
+        CollectConflictsBetween(
+            conflicts,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            areMutuallyExclusive,
+            fieldMap,
+            fieldMap2);
+
+        // (E) Then collect any conflicts between the provided collection of fields
+        // and any fragment names found in the given fragment.
+        for (var i = 0; i < fragmentNames2.Count; i++)
+            CollectConflictsBetweenFieldsAndFragment(
                 conflicts,
                 cachedFieldsAndFragmentNames,
+                comparedFragments,
                 comparedFragmentPairs,
                 areMutuallyExclusive,
                 fieldMap,
-                fieldMap2);
-
-            // (E) Then collect any conflicts between the provided collection of fields
-            // and any fragment names found in the given fragment.
-            for (var i = 0; i < fragmentNames2.Count; i++)
-                CollectConflictsBetweenFieldsAndFragment(
-                    conflicts,
-                    cachedFieldsAndFragmentNames,
-                    comparedFragments,
-                    comparedFragmentPairs,
-                    areMutuallyExclusive,
-                    fieldMap,
-                    fragmentNames2[i]);
-        }
-
-        private void CollectConflictsBetweenFragments(
-            List<Conflict> conflicts,
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            bool areMutuallyExclusive,
-            string fragmentName1,
-            string fragmentName2)
-        {
-            // No need to compare a fragment to itself.
-            if (fragmentName1 == fragmentName2) return;
-
-            // Memoize so two fragments are not compared for conflicts more than once.
-            if (comparedFragmentPairs.Has(fragmentName1, fragmentName2, areMutuallyExclusive)) return;
+                fragmentNames2[i]);
+    }
 
-            comparedFragmentPairs.Add(fragmentName1, fragmentName2, areMutuallyExclusive);
+    private void CollectConflictsBetweenFragments(
+        List<Conflict> conflicts,
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        bool areMutuallyExclusive,
+        string fragmentName1,
+        string fragmentName2)
+    {
+        // No need to compare a fragment to itself.
+        if (fragmentName1 == fragmentName2) return;
 
-            var fragments = _context.Document
-                ?.FragmentDefinitions
-                .ToList();
+        // Memoize so two fragments are not compared for conflicts more than once.
+        if (comparedFragmentPairs.Has(fragmentName1, fragmentName2, areMutuallyExclusive)) return;
 
-            var fragment1 = fragments.SingleOrDefault(f => f.FragmentName == fragmentName1);
-            var fragment2 = fragments.SingleOrDefault(f => f.FragmentName == fragmentName2);
+        comparedFragmentPairs.Add(fragmentName1, fragmentName2, areMutuallyExclusive);
 
-            if (fragment1 == null || fragment2 == null) return;
+        var fragments = _context.Document
+            ?.FragmentDefinitions
+            .ToList();
 
-            var cachedField1 =
-                GetReferencedFieldsAndFragmentNames(
-                    cachedFieldsAndFragmentNames,
-                    fragment1);
+        var fragment1 = fragments.SingleOrDefault(f => f.FragmentName == fragmentName1);
+        var fragment2 = fragments.SingleOrDefault(f => f.FragmentName == fragmentName2);
 
-            var fieldMap1 = cachedField1.NodeAndDef;
-            var fragmentNames1 = cachedField1.Names;
+        if (fragment1 == null || fragment2 == null) return;
 
-            var cachedField2 =
-                GetReferencedFieldsAndFragmentNames(
-                    cachedFieldsAndFragmentNames,
-                    fragment2);
+        var cachedField1 =
+            GetReferencedFieldsAndFragmentNames(
+                cachedFieldsAndFragmentNames,
+                fragment1);
 
-            var fieldMap2 = cachedField2.NodeAndDef;
-            var fragmentNames2 = cachedField2.Names;
+        var fieldMap1 = cachedField1.NodeAndDef;
+        var fragmentNames1 = cachedField1.Names;
 
-            // (F) First, collect all conflicts between these two collections of fields
-            // (not including any nested fragments).
-            CollectConflictsBetween(
+        var cachedField2 =
+            GetReferencedFieldsAndFragmentNames(
+                cachedFieldsAndFragmentNames,
+                fragment2);
+
+        var fieldMap2 = cachedField2.NodeAndDef;
+        var fragmentNames2 = cachedField2.Names;
+
+        // (F) First, collect all conflicts between these two collections of fields
+        // (not including any nested fragments).
+        CollectConflictsBetween(
+            conflicts,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            areMutuallyExclusive,
+            fieldMap1,
+            fieldMap2);
+
+        // (G) Then collect conflicts between the first fragment and any nested
+        // fragments spread in the second fragment.
+        for (var j = 0; j < fragmentNames2.Count; j++)
+            CollectConflictsBetweenFragments(
                 conflicts,
                 cachedFieldsAndFragmentNames,
                 comparedFragmentPairs,
                 areMutuallyExclusive,
-                fieldMap1,
-                fieldMap2);
-
-            // (G) Then collect conflicts between the first fragment and any nested
-            // fragments spread in the second fragment.
-            for (var j = 0; j < fragmentNames2.Count; j++)
-                CollectConflictsBetweenFragments(
-                    conflicts,
-                    cachedFieldsAndFragmentNames,
-                    comparedFragmentPairs,
-                    areMutuallyExclusive,
-                    fragmentName1,
-                    fragmentNames2[j]);
+                fragmentName1,
+                fragmentNames2[j]);
 
-            // (G) Then collect conflicts between the second fragment and any nested
-            // fragments spread in the first fragment.
-            for (var i = 0; i < fragmentNames1.Count; i++)
-                CollectConflictsBetweenFragments(
-                    conflicts,
-                    cachedFieldsAndFragmentNames,
-                    comparedFragmentPairs,
-                    areMutuallyExclusive,
-                    fragmentNames1[i],
-                    fragmentName2);
-        }
+        // (G) Then collect conflicts between the second fragment and any nested
+        // fragments spread in the first fragment.
+        for (var i = 0; i < fragmentNames1.Count; i++)
+            CollectConflictsBetweenFragments(
+                conflicts,
+                cachedFieldsAndFragmentNames,
+                comparedFragmentPairs,
+                areMutuallyExclusive,
+                fragmentNames1[i],
+                fragmentName2);
+    }
 
-        private void CollectConflictsWithin(
-            List<Conflict> conflicts,
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            Dictionary<string, List<FieldDefPair>> fieldMap)
+    private void CollectConflictsWithin(
+        List<Conflict> conflicts,
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        Dictionary<string, List<FieldDefPair>> fieldMap)
+    {
+        // A field map is a keyed collection, where each key represents a response
+        // name and the value at that key is a list of all fields which provide that
+        // response name. For every response name, if there are multiple fields, they
+        // must be compared to find a potential conflict.
+        foreach (var entry in fieldMap)
         {
-            // A field map is a keyed collection, where each key represents a response
-            // name and the value at that key is a list of all fields which provide that
-            // response name. For every response name, if there are multiple fields, they
-            // must be compared to find a potential conflict.
-            foreach (var entry in fieldMap)
-            {
-                var responseName = entry.Key;
-                var fields = entry.Value;
-
-                // This compares every field in the list to every other field in this list
-                // (except to itself). If the list only has one item, nothing needs to
-                // be compared.
-                if (fields.Count > 1)
-                    for (var i = 0; i < fields.Count; i++)
-                    for (var j = i + 1; j < fields.Count; j++)
-                    {
-                        var conflict = FindConflict(
-                            cachedFieldsAndFragmentNames,
-                            comparedFragmentPairs,
-                            false, // within one collection is never mutually exclusive
-                            responseName,
-                            fields[i],
-                            fields[j]);
-
-                        if (conflict != null) conflicts.Add(conflict);
-                    }
-            }
+            var responseName = entry.Key;
+            var fields = entry.Value;
+
+            // This compares every field in the list to every other field in this list
+            // (except to itself). If the list only has one item, nothing needs to
+            // be compared.
+            if (fields.Count > 1)
+                for (var i = 0; i < fields.Count; i++)
+                for (var j = i + 1; j < fields.Count; j++)
+                {
+                    var conflict = FindConflict(
+                        cachedFieldsAndFragmentNames,
+                        comparedFragmentPairs,
+                        false, // within one collection is never mutually exclusive
+                        responseName,
+                        fields[i],
+                        fields[j]);
+
+                    if (conflict != null) conflicts.Add(conflict);
+                }
         }
+    }
 
 
-        private void CollectFieldsAndFragmentNames(
-            TypeDefinition parentType,
-            SelectionSet selectionSet,
-            Dictionary<string, List<FieldDefPair>> nodeAndDefs,
-            Dictionary<string, bool> fragments)
+    private void CollectFieldsAndFragmentNames(
+        TypeDefinition parentType,
+        SelectionSet selectionSet,
+        Dictionary<string, List<FieldDefPair>> nodeAndDefs,
+        Dictionary<string, bool> fragments)
+    {
+        var selections = selectionSet.ToList();
+        for (var i = 0; i < selections.Count; i++)
         {
-            var selections = selectionSet.ToList();
-            for (var i = 0; i < selections.Count; i++)
-            {
-                var selection = selections[i];
+            var selection = selections[i];
 
-                if (selection is FieldSelection field)
-                {
-                    var fieldName = field.Name;
-                    FieldDefinition? fieldDef = null;
-                    if (parentType is not null && (IsObjectDefinition(parentType) || IsInterfaceType(parentType)))
-                        fieldDef = _context.Schema.GetField( parentType.Name, fieldName);
+            if (selection is FieldSelection field)
+            {
+                var fieldName = field.Name;
+                FieldDefinition? fieldDef = null;
+                if (parentType is not null && (IsObjectDefinition(parentType) || IsInterfaceType(parentType)))
+                    fieldDef = _context.Schema.GetField(parentType.Name, fieldName);
 
-                    var responseName = field.AliasOrName;
+                var responseName = field.AliasOrName;
 
-                    if (!nodeAndDefs.ContainsKey(responseName)) nodeAndDefs[responseName] = new List<FieldDefPair>();
+                if (!nodeAndDefs.ContainsKey(responseName)) nodeAndDefs[responseName] = new List<FieldDefPair>();
 
-                    nodeAndDefs[responseName].Add(new FieldDefPair
-                    {
-                        ParentType = parentType,
-                        Field = field,
-                        FieldDef = fieldDef
-                    });
-                }
-                else if (selection is FragmentSpread fragmentSpread)
+                nodeAndDefs[responseName].Add(new FieldDefPair
                 {
-                    fragments[fragmentSpread.FragmentName] = true;
-                }
-                else if (selection is InlineFragment inlineFragment)
-                {
-                    var typeCondition = inlineFragment.TypeCondition;
+                    ParentType = parentType,
+                    Field = field,
+                    FieldDef = fieldDef
+                });
+            }
+            else if (selection is FragmentSpread fragmentSpread)
+            {
+                fragments[fragmentSpread.FragmentName] = true;
+            }
+            else if (selection is InlineFragment inlineFragment)
+            {
+                var typeCondition = inlineFragment.TypeCondition;
 
-                    if (typeCondition is not null)
-                    {
-                        var inlineFragmentType =
-                            _context.Schema.GetNamedType(typeCondition.Name) ?? parentType;
-
-                        CollectFieldsAndFragmentNames(
-                            inlineFragmentType,
-                            inlineFragment.SelectionSet,
-                            nodeAndDefs,
-                            fragments);
-                    }
+                if (typeCondition is not null)
+                {
+                    var inlineFragmentType =
+                        _context.Schema.GetNamedType(typeCondition.Name) ?? parentType;
+
+                    CollectFieldsAndFragmentNames(
+                        inlineFragmentType,
+                        inlineFragment.SelectionSet,
+                        nodeAndDefs,
+                        fragments);
                 }
             }
         }
+    }
 
-        private bool DoTypesConflict(TypeBase type1, TypeBase type2)
-        {
-            if (type1 is ListType type1List)
-                return type2 is not ListType type2List || DoTypesConflict(type1List.OfType, type2List.OfType);
+    private bool DoTypesConflict(TypeBase type1, TypeBase type2)
+    {
+        if (type1 is ListType type1List)
+            return type2 is not ListType type2List || DoTypesConflict(type1List.OfType, type2List.OfType);
 
-            if (type2 is ListType) return true;
+        if (type2 is ListType) return true;
 
-            if (type1 is NonNullType type1NonNullType)
-                return !(type2 is NonNullType type2NonNullType) ||
-                       DoTypesConflict(type1NonNullType.OfType, type2NonNullType.OfType);
+        if (type1 is NonNullType type1NonNullType)
+            return !(type2 is NonNullType type2NonNullType) ||
+                   DoTypesConflict(type1NonNullType.OfType, type2NonNullType.OfType);
 
-            if (type2 is NonNullType) return true;
+        if (type2 is NonNullType) return true;
 
-            var typeDefinition1 = Ast.UnwrapAndResolveType(_context.Schema, type1);
-            var typeDefinition2 = Ast.UnwrapAndResolveType(_context.Schema, type2);
+        var typeDefinition1 = Ast.UnwrapAndResolveType(_context.Schema, type1);
+        var typeDefinition2 = Ast.UnwrapAndResolveType(_context.Schema, type2);
 
-            if (typeDefinition1 is ScalarDefinition || typeDefinition2 is ScalarDefinition) return !Equals(typeDefinition1, typeDefinition2);
+        if (typeDefinition1 is ScalarDefinition || typeDefinition2 is ScalarDefinition)
+            return !Equals(typeDefinition1, typeDefinition2);
 
-            if (typeDefinition1 is EnumDefinition || typeDefinition2 is EnumDefinition) return !Equals(typeDefinition1, typeDefinition2);
+        if (typeDefinition1 is EnumDefinition || typeDefinition2 is EnumDefinition)
+            return !Equals(typeDefinition1, typeDefinition2);
 
-            return false;
-        }
+        return false;
+    }
 
-        private static string FieldsConflictMessage(string responseName, ConflictReason reason)
-        {
-            return $"Fields {responseName} conflicts because {ReasonMessage(reason.Message)}. " +
-                   "Use different aliases on the fields to fetch both if this was intentional.";
-        }
+    private static string FieldsConflictMessage(string responseName, ConflictReason reason)
+    {
+        return $"Fields {responseName} conflicts because {ReasonMessage(reason.Message)}. " +
+               "Use different aliases on the fields to fetch both if this was intentional.";
+    }
 
-        private Conflict? FindConflict(
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            bool parentFieldsAreMutuallyExclusive,
-            string responseName,
-            FieldDefPair fieldDefPair1,
-            FieldDefPair fieldDefPair2)
+    private Conflict? FindConflict(
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        bool parentFieldsAreMutuallyExclusive,
+        string responseName,
+        FieldDefPair fieldDefPair1,
+        FieldDefPair fieldDefPair2)
+    {
+        var parentType1 = _context.Schema.GetNamedType(fieldDefPair1.ParentType.Name);
+        var node1 = fieldDefPair1.Field;
+        var def1 = fieldDefPair1.FieldDef;
+
+        var parentType2 = _context.Schema.GetNamedType(fieldDefPair2.ParentType.Name);
+        var node2 = fieldDefPair2.Field;
+        var def2 = fieldDefPair2.FieldDef;
+
+        // If it is known that two fields could not possibly apply at the same
+        // time, due to the parent types, then it is safe to permit them to diverge
+        // in aliased field or arguments used as they will not present any ambiguity
+        // by differing.
+        // It is known that two parent types could never overlap if they are
+        // different Object types. Interface or Union types might overlap - if not
+        // in the current state of the schema, then perhaps in some future version,
+        // thus may not safely diverge.
+
+        var areMutuallyExclusive =
+            parentFieldsAreMutuallyExclusive ||
+            parentType1 != parentType2 && IsObjectDefinition(parentType1) && IsObjectDefinition(parentType2);
+
+        // return type for each field.
+        var type1 = def1?.Type;
+        var type2 = def2?.Type;
+
+        if (!areMutuallyExclusive)
         {
-            var parentType1 = _context.Schema.GetNamedType(fieldDefPair1.ParentType.Name);
-            var node1 = fieldDefPair1.Field;
-            var def1 = fieldDefPair1.FieldDef;
-
-            var parentType2 = _context.Schema.GetNamedType(fieldDefPair2.ParentType.Name);
-            var node2 = fieldDefPair2.Field;
-            var def2 = fieldDefPair2.FieldDef;
-
-            // If it is known that two fields could not possibly apply at the same
-            // time, due to the parent types, then it is safe to permit them to diverge
-            // in aliased field or arguments used as they will not present any ambiguity
-            // by differing.
-            // It is known that two parent types could never overlap if they are
-            // different Object types. Interface or Union types might overlap - if not
-            // in the current state of the schema, then perhaps in some future version,
-            // thus may not safely diverge.
-
-            var areMutuallyExclusive =
-                parentFieldsAreMutuallyExclusive ||
-                parentType1 != parentType2 && IsObjectDefinition(parentType1) && IsObjectDefinition(parentType2);
-
-            // return type for each field.
-            var type1 = def1?.Type;
-            var type2 = def2?.Type;
-
-            if (!areMutuallyExclusive)
-            {
-                // Two aliases must refer to the same field.
-                var name1 = node1.Name;
-                var name2 = node2.Name;
+            // Two aliases must refer to the same field.
+            var name1 = node1.Name;
+            var name2 = node2.Name;
 
-                if (name1 != name2)
-                    return new Conflict
-                    {
-                        Reason = new ConflictReason
-                        {
-                            Name = responseName,
-                            Message = new Message
-                            {
-                                Msg = $"{name1} and {name2} are different fields"
-                            }
-                        },
-                        FieldsLeft = new List<FieldSelection> {node1},
-                        FieldsRight = new List<FieldSelection> {node2}
-                    };
-
-                // Two field calls must have the same arguments.
-                if (!SameArguments(fieldDefPair1, fieldDefPair2))
-                    return new Conflict
+            if (name1 != name2)
+                return new Conflict
+                {
+                    Reason = new ConflictReason
                     {
-                        Reason = new ConflictReason
+                        Name = responseName,
+                        Message = new Message
                         {
-                            Name = responseName,
-                            Message = new Message
-                            {
-                                Msg = "they have differing arguments"
-                            }
-                        },
-                        FieldsLeft = new List<FieldSelection> {node1},
-                        FieldsRight = new List<FieldSelection> {node2}
-                    };
-            }
+                            Msg = $"{name1} and {name2} are different fields"
+                        }
+                    },
+                    FieldsLeft = new List<FieldSelection> { node1 },
+                    FieldsRight = new List<FieldSelection> { node2 }
+                };
 
-            if (type1 != null && type2 != null && DoTypesConflict(type1, type2))
+            // Two field calls must have the same arguments.
+            if (!SameArguments(fieldDefPair1, fieldDefPair2))
                 return new Conflict
                 {
                     Reason = new ConflictReason
@@ -401,416 +387,433 @@ private static string FieldsConflictMessage(string responseName, ConflictReason
                         Name = responseName,
                         Message = new Message
                         {
-                            Msg = $"they return conflicting types {type1} and {type2}"
+                            Msg = "they have differing arguments"
                         }
                     },
-                    FieldsLeft = new List<FieldSelection> {node1},
-                    FieldsRight = new List<FieldSelection> {node2}
+                    FieldsLeft = new List<FieldSelection> { node1 },
+                    FieldsRight = new List<FieldSelection> { node2 }
                 };
-
-            // Collect and compare sub-fields. Use the same "visited fragment names" list
-            // for both collections so fields in a fragment reference are never
-            // compared to themselves.
-            var selectionSet1 = node1.SelectionSet;
-            var selectionSet2 = node2.SelectionSet;
-
-            if (selectionSet1 != null && selectionSet2 != null)
-            {
-                var conflicts = FindConflictsBetweenSubSelectionSets(
-                    cachedFieldsAndFragmentNames,
-                    comparedFragmentPairs,
-                    areMutuallyExclusive,
-                    Ast.UnwrapAndResolveType(_context.Schema, type1),
-                    selectionSet1,
-                    Ast.UnwrapAndResolveType(_context.Schema, type2),
-                    selectionSet2);
-
-                return SubfieldConflicts(conflicts, responseName, node1, node2);
-            }
-
-            return null;
         }
 
-        private List<Conflict> FindConflictsBetweenSubSelectionSets(
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            bool areMutuallyExclusive,
-            TypeDefinition parentType1,
-            SelectionSet selectionSet1,
-            TypeDefinition parentType2,
-            SelectionSet selectionSet2)
+        if (type1 != null && type2 != null && DoTypesConflict(type1, type2))
+            return new Conflict
+            {
+                Reason = new ConflictReason
+                {
+                    Name = responseName,
+                    Message = new Message
+                    {
+                        Msg = $"they return conflicting types {type1} and {type2}"
+                    }
+                },
+                FieldsLeft = new List<FieldSelection> { node1 },
+                FieldsRight = new List<FieldSelection> { node2 }
+            };
+
+        // Collect and compare sub-fields. Use the same "visited fragment names" list
+        // for both collections so fields in a fragment reference are never
+        // compared to themselves.
+        var selectionSet1 = node1.SelectionSet;
+        var selectionSet2 = node2.SelectionSet;
+
+        if (selectionSet1 != null && selectionSet2 != null)
         {
-            var conflicts = new List<Conflict>();
-
-            var cachedField1 = GetFieldsAndFragmentNames(
-                cachedFieldsAndFragmentNames,
-                parentType1,
-                selectionSet1);
-
-            var fieldMap1 = cachedField1.NodeAndDef;
-            var fragmentNames1 = cachedField1.Names;
-
-            var cachedField2 = GetFieldsAndFragmentNames(
-                cachedFieldsAndFragmentNames,
-                parentType2,
-                selectionSet2);
-
-            var fieldMap2 = cachedField2.NodeAndDef;
-            var fragmentNames2 = cachedField2.Names;
-
-            // (H) First, collect all conflicts between these two collections of field.
-            CollectConflictsBetween(
-                conflicts,
+            var conflicts = FindConflictsBetweenSubSelectionSets(
                 cachedFieldsAndFragmentNames,
                 comparedFragmentPairs,
                 areMutuallyExclusive,
-                fieldMap1,
-                fieldMap2);
-
-            // (I) Then collect conflicts between the first collection of fields and
-            // those referenced by each fragment name associated with the second.
-            if (fragmentNames2.Count != 0)
-            {
-                var comparedFragments = new ObjMap<bool>();
+                Ast.UnwrapAndResolveType(_context.Schema, type1),
+                selectionSet1,
+                Ast.UnwrapAndResolveType(_context.Schema, type2),
+                selectionSet2);
 
-                for (var j = 0; j < fragmentNames2.Count; j++)
-                    CollectConflictsBetweenFieldsAndFragment(
-                        conflicts,
-                        cachedFieldsAndFragmentNames,
-                        comparedFragments,
-                        comparedFragmentPairs,
-                        areMutuallyExclusive,
-                        fieldMap1,
-                        fragmentNames2[j]);
-            }
+            return SubfieldConflicts(conflicts, responseName, node1, node2);
+        }
 
-            // (I) Then collect conflicts between the second collection of fields and
-            // those referenced by each fragment name associated with the first.
-            if (fragmentNames1.Count != 0)
-            {
-                var comparedFragments = new ObjMap<bool>();
+        return null;
+    }
 
-                for (var i = 0; i < fragmentNames1.Count; i++)
-                    CollectConflictsBetweenFieldsAndFragment(
-                        conflicts,
-                        cachedFieldsAndFragmentNames,
-                        comparedFragments,
-                        comparedFragmentPairs,
-                        areMutuallyExclusive,
-                        fieldMap2,
-                        fragmentNames1[i]);
-            }
+    private List<Conflict> FindConflictsBetweenSubSelectionSets(
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        bool areMutuallyExclusive,
+        TypeDefinition parentType1,
+        SelectionSet selectionSet1,
+        TypeDefinition parentType2,
+        SelectionSet selectionSet2)
+    {
+        var conflicts = new List<Conflict>();
+
+        var cachedField1 = GetFieldsAndFragmentNames(
+            cachedFieldsAndFragmentNames,
+            parentType1,
+            selectionSet1);
+
+        var fieldMap1 = cachedField1.NodeAndDef;
+        var fragmentNames1 = cachedField1.Names;
+
+        var cachedField2 = GetFieldsAndFragmentNames(
+            cachedFieldsAndFragmentNames,
+            parentType2,
+            selectionSet2);
+
+        var fieldMap2 = cachedField2.NodeAndDef;
+        var fragmentNames2 = cachedField2.Names;
+
+        // (H) First, collect all conflicts between these two collections of field.
+        CollectConflictsBetween(
+            conflicts,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            areMutuallyExclusive,
+            fieldMap1,
+            fieldMap2);
+
+        // (I) Then collect conflicts between the first collection of fields and
+        // those referenced by each fragment name associated with the second.
+        if (fragmentNames2.Count != 0)
+        {
+            var comparedFragments = new ObjMap<bool>();
 
-            // (J) Also collect conflicts between any fragment names by the first and
-            // fragment names by the second. This compares each item in the first set of
-            // names to each item in the second set of names.
-            for (var i = 0; i < fragmentNames1.Count; i++)
             for (var j = 0; j < fragmentNames2.Count; j++)
-                CollectConflictsBetweenFragments(
+                CollectConflictsBetweenFieldsAndFragment(
                     conflicts,
                     cachedFieldsAndFragmentNames,
+                    comparedFragments,
                     comparedFragmentPairs,
                     areMutuallyExclusive,
-                    fragmentNames1[i],
+                    fieldMap1,
                     fragmentNames2[j]);
-
-            return conflicts;
         }
 
-        private List<Conflict> FindConflictsWithinSelectionSet(
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            PairSet comparedFragmentPairs,
-            TypeDefinition parentType,
-            SelectionSet selectionSet)
+        // (I) Then collect conflicts between the second collection of fields and
+        // those referenced by each fragment name associated with the first.
+        if (fragmentNames1.Count != 0)
         {
-            var conflicts = new List<Conflict>();
+            var comparedFragments = new ObjMap<bool>();
 
-            var cachedField = GetFieldsAndFragmentNames(
-                cachedFieldsAndFragmentNames,
-                parentType,
-                selectionSet);
-
-            var fieldMap = cachedField.NodeAndDef;
-            var fragmentNames = cachedField.Names;
+            for (var i = 0; i < fragmentNames1.Count; i++)
+                CollectConflictsBetweenFieldsAndFragment(
+                    conflicts,
+                    cachedFieldsAndFragmentNames,
+                    comparedFragments,
+                    comparedFragmentPairs,
+                    areMutuallyExclusive,
+                    fieldMap2,
+                    fragmentNames1[i]);
+        }
 
-            CollectConflictsWithin(
+        // (J) Also collect conflicts between any fragment names by the first and
+        // fragment names by the second. This compares each item in the first set of
+        // names to each item in the second set of names.
+        for (var i = 0; i < fragmentNames1.Count; i++)
+        for (var j = 0; j < fragmentNames2.Count; j++)
+            CollectConflictsBetweenFragments(
                 conflicts,
                 cachedFieldsAndFragmentNames,
                 comparedFragmentPairs,
-                fieldMap);
+                areMutuallyExclusive,
+                fragmentNames1[i],
+                fragmentNames2[j]);
+
+        return conflicts;
+    }
+
+    private List<Conflict> FindConflictsWithinSelectionSet(
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        PairSet comparedFragmentPairs,
+        TypeDefinition parentType,
+        SelectionSet selectionSet)
+    {
+        var conflicts = new List<Conflict>();
+
+        var cachedField = GetFieldsAndFragmentNames(
+            cachedFieldsAndFragmentNames,
+            parentType,
+            selectionSet);
+
+        var fieldMap = cachedField.NodeAndDef;
+        var fragmentNames = cachedField.Names;
+
+        CollectConflictsWithin(
+            conflicts,
+            cachedFieldsAndFragmentNames,
+            comparedFragmentPairs,
+            fieldMap);
 
-            if (fragmentNames.Count != 0)
+        if (fragmentNames.Count != 0)
+        {
+            // (B) Then collect conflicts between these fields and those represented by
+            // each spread fragment name found.
+            var comparedFragments = new ObjMap<bool>();
+            for (var i = 0; i < fragmentNames.Count; i++)
             {
-                // (B) Then collect conflicts between these fields and those represented by
-                // each spread fragment name found.
-                var comparedFragments = new ObjMap<bool>();
-                for (var i = 0; i < fragmentNames.Count; i++)
-                {
-                    CollectConflictsBetweenFieldsAndFragment(
+                CollectConflictsBetweenFieldsAndFragment(
+                    conflicts,
+                    cachedFieldsAndFragmentNames,
+                    comparedFragments,
+                    comparedFragmentPairs,
+                    false,
+                    fieldMap,
+                    fragmentNames[i]);
+
+                // (C) Then compare this fragment with all other fragments found in this
+                // selection set to collect conflicts between fragments spread together.
+                // This compares each item in the list of fragment names to every other
+                // item in that same list (except for itself).
+                for (var j = i + 1; j < fragmentNames.Count; j++)
+                    CollectConflictsBetweenFragments(
                         conflicts,
                         cachedFieldsAndFragmentNames,
-                        comparedFragments,
                         comparedFragmentPairs,
                         false,
-                        fieldMap,
-                        fragmentNames[i]);
-
-                    // (C) Then compare this fragment with all other fragments found in this
-                    // selection set to collect conflicts between fragments spread together.
-                    // This compares each item in the list of fragment names to every other
-                    // item in that same list (except for itself).
-                    for (var j = i + 1; j < fragmentNames.Count; j++)
-                        CollectConflictsBetweenFragments(
-                            conflicts,
-                            cachedFieldsAndFragmentNames,
-                            comparedFragmentPairs,
-                            false,
-                            fragmentNames[i],
-                            fragmentNames[j]);
-                }
+                        fragmentNames[i],
+                        fragmentNames[j]);
             }
-
-            return conflicts;
         }
 
-        private CachedField GetFieldsAndFragmentNames(
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            TypeDefinition parentType,
-            SelectionSet selectionSet)
-        {
-            cachedFieldsAndFragmentNames.TryGetValue(selectionSet,
-                out var cached);
+        return conflicts;
+    }
 
-            if (cached == null)
-            {
-                var nodeAndDef = new Dictionary<string, List<FieldDefPair>>();
-                var fragmentNames = new Dictionary<string, bool>();
+    private CachedField GetFieldsAndFragmentNames(
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        TypeDefinition parentType,
+        SelectionSet selectionSet)
+    {
+        cachedFieldsAndFragmentNames.TryGetValue(selectionSet,
+            out var cached);
 
-                CollectFieldsAndFragmentNames(
-                    parentType,
-                    selectionSet,
-                    nodeAndDef,
-                    fragmentNames);
+        if (cached == null)
+        {
+            var nodeAndDef = new Dictionary<string, List<FieldDefPair>>();
+            var fragmentNames = new Dictionary<string, bool>();
 
-                cached = new CachedField {NodeAndDef = nodeAndDef, Names = fragmentNames.Keys.ToList()};
-                cachedFieldsAndFragmentNames.Add(selectionSet, cached);
-            }
+            CollectFieldsAndFragmentNames(
+                parentType,
+                selectionSet,
+                nodeAndDef,
+                fragmentNames);
 
-            return cached;
+            cached = new CachedField { NodeAndDef = nodeAndDef, Names = fragmentNames.Keys.ToList() };
+            cachedFieldsAndFragmentNames.Add(selectionSet, cached);
         }
 
-        // Given a reference to a fragment, return the represented collection of fields
-        // as well as a list of nested fragment names referenced via fragment spreads.
-        private CachedField GetReferencedFieldsAndFragmentNames(
-            Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
-            FragmentDefinition fragment)
-        {
-            // Short-circuit building a type from the node if possible.
-            if (cachedFieldsAndFragmentNames.ContainsKey(fragment.SelectionSet))
-                return cachedFieldsAndFragmentNames[fragment.SelectionSet];
+        return cached;
+    }
 
-            var fragmentType = fragment.TypeCondition;
-            return GetFieldsAndFragmentNames(
-                cachedFieldsAndFragmentNames,
-                _context.Schema.GetNamedType(fragmentType.Name) ?? throw  new InvalidOperationException($"Could not find type '{fragmentType.Name}' from schema."),
-                fragment.SelectionSet);
-        }
+    // Given a reference to a fragment, return the represented collection of fields
+    // as well as a list of nested fragment names referenced via fragment spreads.
+    private CachedField GetReferencedFieldsAndFragmentNames(
+        Dictionary<SelectionSet, CachedField> cachedFieldsAndFragmentNames,
+        FragmentDefinition fragment)
+    {
+        // Short-circuit building a type from the node if possible.
+        if (cachedFieldsAndFragmentNames.ContainsKey(fragment.SelectionSet))
+            return cachedFieldsAndFragmentNames[fragment.SelectionSet];
+
+        var fragmentType = fragment.TypeCondition;
+        return GetFieldsAndFragmentNames(
+            cachedFieldsAndFragmentNames,
+            _context.Schema.GetNamedType(fragmentType.Name) ??
+            throw new InvalidOperationException($"Could not find type '{fragmentType.Name}' from schema."),
+            fragment.SelectionSet);
+    }
 
-        private bool IsInterfaceType(TypeDefinition? parentType)
-        {
-            return parentType is InterfaceDefinition;
-        }
+    private bool IsInterfaceType(TypeDefinition? parentType)
+    {
+        return parentType is InterfaceDefinition;
+    }
 
-        private bool IsObjectDefinition(TypeDefinition? parentType)
-        {
-            return parentType is ObjectDefinition;
-        }
+    private bool IsObjectDefinition(TypeDefinition? parentType)
+    {
+        return parentType is ObjectDefinition;
+    }
 
-        private static string ReasonMessage(Message reasonMessage)
-        {
-            if (reasonMessage.Msgs?.Count > 0)
-                return string.Join(
-                    " and ",
-                    reasonMessage.Msgs.Select(x =>
-                    {
-                        return $"subfields \"{x.Name}\" conflict because {ReasonMessage(x.Message)}";
-                    }).ToArray()
-                );
-            return reasonMessage.Msg;
-        }
+    private static string ReasonMessage(Message reasonMessage)
+    {
+        if (reasonMessage.Msgs?.Count > 0)
+            return string.Join(
+                " and ",
+                reasonMessage.Msgs.Select(x =>
+                {
+                    return $"subfields \"{x.Name}\" conflict because {ReasonMessage(x.Message)}";
+                }).ToArray()
+            );
+        return reasonMessage.Msg;
+    }
 
-        private bool SameArguments(
-            FieldDefPair fieldDefPair1,
-            FieldDefPair fieldDefPair2)
-        {
-            var arguments1 = fieldDefPair1.Field.Arguments?
-                .ToDictionary(l => l.Name, l => l);
+    private bool SameArguments(
+        FieldDefPair fieldDefPair1,
+        FieldDefPair fieldDefPair2)
+    {
+        var arguments1 = fieldDefPair1.Field.Arguments?
+            .ToDictionary(l => l.Name, l => l);
 
-            var arguments2 = fieldDefPair2.Field.Arguments?
-                .ToDictionary(l => l.Name, l => l);
+        var arguments2 = fieldDefPair2.Field.Arguments?
+            .ToDictionary(l => l.Name, l => l);
 
-            if (arguments1 == null && arguments2 == null)
-                return true;
+        if (arguments1 == null && arguments2 == null)
+            return true;
 
-            if (arguments1 == null)
-                return false;
+        if (arguments1 == null)
+            return false;
 
-            if (arguments2 == null)
-                return false;
+        if (arguments2 == null)
+            return false;
 
-            if (arguments1.Count() != arguments2.Count())
-                return false;
+        if (arguments1.Count() != arguments2.Count())
+            return false;
 
-            return arguments1.All(arg1 =>
-            {
-                if (!arguments2.ContainsKey(arg1.Key))
-                    return false;
+        return arguments1.All(arg1 =>
+        {
+            if (!arguments2.ContainsKey(arg1.Key))
+                return false;
 
-                var arg2 = arguments2[arg1.Key];
+            var arg2 = arguments2[arg1.Key];
 
-                if (fieldDefPair1.FieldDef?.TryGetArgument(arg1.Key, out var argDef1) == true && fieldDefPair2.FieldDef?.TryGetArgument(arg1.Key, out var argDef2) == true)
-                {
-                    var value1 = ArgumentCoercion.CoerceArgumentValue(
-                        _context.Schema,
-                        _context.VariableValues,
-                        arg1.Key,
-                        argDef1,
-                        arg1.Value);
-
-                    var value2 = ArgumentCoercion.CoerceArgumentValue(
-                        _context.Schema,
-                        _context.VariableValues,
-                        arg1.Key,
-                        argDef2,
-                        arg2);
-
-                    return SameValue(value1, value2);
-                }
+            if (fieldDefPair1.FieldDef?.TryGetArgument(arg1.Key, out var argDef1) == true &&
+                fieldDefPair2.FieldDef?.TryGetArgument(arg1.Key, out var argDef2) == true)
+            {
+                var value1 = ArgumentCoercion.CoerceArgumentValue(
+                    _context.Schema,
+                    _context.VariableValues,
+                    arg1.Key,
+                    argDef1,
+                    arg1.Value);
+
+                var value2 = ArgumentCoercion.CoerceArgumentValue(
+                    _context.Schema,
+                    _context.VariableValues,
+                    arg1.Key,
+                    argDef2,
+                    arg2);
+
+                return SameValue(value1, value2);
+            }
 
-                return false;
-                });
-        }
+            return false;
+        });
+    }
 
-        private bool SameValue(object arg1, object arg2)
-        {
-            if (arg1 == null && arg2 == null)
-                return true;
+    private bool SameValue(object arg1, object arg2)
+    {
+        if (arg1 == null && arg2 == null)
+            return true;
 
-            return Equals(arg1, arg2);
-        }
+        return Equals(arg1, arg2);
+    }
 
-        // Given a series of Conflicts which occurred between two sub-fields,
-        // generate a single Conflict.
-        private Conflict SubfieldConflicts(
-            List<Conflict> conflicts,
-            string responseName,
-            FieldSelection node1,
-            FieldSelection node2)
-        {
-            if (conflicts.Count > 0)
-                return new Conflict
+    // Given a series of Conflicts which occurred between two sub-fields,
+    // generate a single Conflict.
+    private Conflict SubfieldConflicts(
+        List<Conflict> conflicts,
+        string responseName,
+        FieldSelection node1,
+        FieldSelection node2)
+    {
+        if (conflicts.Count > 0)
+            return new Conflict
+            {
+                Reason = new ConflictReason
                 {
-                    Reason = new ConflictReason
-                    {
-                        Name = responseName,
-                        Message = new Message
-                        {
-                            Msgs = conflicts.Select(c => c.Reason).ToList()
-                        }
-                    },
-                    FieldsLeft = conflicts.Aggregate(new List<FieldSelection> {node1}, (allfields, conflict) =>
-                    {
-                        allfields.AddRange(conflict.FieldsLeft);
-                        return allfields;
-                    }),
-                    FieldsRight = conflicts.Aggregate(new List<FieldSelection> {node2}, (allfields, conflict) =>
+                    Name = responseName,
+                    Message = new Message
                     {
-                        allfields.AddRange(conflict.FieldsRight);
-                        return allfields;
-                    })
-                };
+                        Msgs = conflicts.Select(c => c.Reason).ToList()
+                    }
+                },
+                FieldsLeft = conflicts.Aggregate(new List<FieldSelection> { node1 }, (allfields, conflict) =>
+                {
+                    allfields.AddRange(conflict.FieldsLeft);
+                    return allfields;
+                }),
+                FieldsRight = conflicts.Aggregate(new List<FieldSelection> { node2 }, (allfields, conflict) =>
+                {
+                    allfields.AddRange(conflict.FieldsRight);
+                    return allfields;
+                })
+            };
 
-            return null;
-        }
+        return null;
+    }
 
-        private class CachedField
-        {
-            public List<string> Names { get; set; }
-            public Dictionary<string, List<FieldDefPair>> NodeAndDef { get; set; }
-        }
+    private class CachedField
+    {
+        public List<string> Names { get; set; }
+        public Dictionary<string, List<FieldDefPair>> NodeAndDef { get; set; }
+    }
 
-        private class Conflict
-        {
-            public List<FieldSelection> FieldsLeft { get; set; }
+    private class Conflict
+    {
+        public List<FieldSelection> FieldsLeft { get; set; }
 
-            public List<FieldSelection> FieldsRight { get; set; }
-            public ConflictReason Reason { get; set; }
-        }
+        public List<FieldSelection> FieldsRight { get; set; }
+        public ConflictReason Reason { get; set; }
+    }
 
-        private class ConflictReason
-        {
-            public Message Message { get; set; }
-            public string Name { get; set; }
-        }
+    private class ConflictReason
+    {
+        public Message Message { get; set; }
+        public string Name { get; set; }
+    }
 
-        private class FieldDefPair
-        {
-            public FieldSelection Field { get; set; }
+    private class FieldDefPair
+    {
+        public FieldSelection Field { get; set; }
 
-            public FieldDefinition? FieldDef { get; set; }
-            public TypeDefinition? ParentType { get; set; }
-        }
+        public FieldDefinition? FieldDef { get; set; }
+        public TypeDefinition? ParentType { get; set; }
+    }
+
+    private class Message
+    {
+        public string Msg { get; set; }
+        public List<ConflictReason> Msgs { get; set; }
+    }
+
+    private class ObjMap<T> : Dictionary<string, T>
+    {
+    }
+
+    private class PairSet
+    {
+        private readonly ObjMap<ObjMap<bool>> _data;
 
-        private class Message
+        public PairSet()
         {
-            public string Msg { get; set; }
-            public List<ConflictReason> Msgs { get; set; }
+            _data = new ObjMap<ObjMap<bool>>();
         }
 
-        private class ObjMap<T> : Dictionary<string, T>
+        public void Add(string a, string b, bool areMutuallyExclusive)
         {
+            PairSetAdd(a, b, areMutuallyExclusive);
+            PairSetAdd(b, a, areMutuallyExclusive);
         }
 
-        private class PairSet
+        public bool Has(string a, string b, bool areMutuallyExclusive)
         {
-            private readonly ObjMap<ObjMap<bool>> _data;
-
-            public PairSet()
-            {
-                _data = new ObjMap<ObjMap<bool>>();
-            }
-
-            public void Add(string a, string b, bool areMutuallyExclusive)
-            {
-                PairSetAdd(a, b, areMutuallyExclusive);
-                PairSetAdd(b, a, areMutuallyExclusive);
-            }
+            _data.TryGetValue(a, out var first);
 
-            public bool Has(string a, string b, bool areMutuallyExclusive)
-            {
-                _data.TryGetValue(a, out var first);
+            if (first == null || !first.ContainsKey(b)) return false;
 
-                if (first == null || !first.ContainsKey(b)) return false;
+            var result = first[b];
 
-                var result = first[b];
+            if (areMutuallyExclusive == false) return result == false;
 
-                if (areMutuallyExclusive == false) return result == false;
+            return true;
+        }
 
-                return true;
-            }
+        private void PairSetAdd(string a, string b, bool areMutuallyExclusive)
+        {
+            _data.TryGetValue(a, out var map);
 
-            private void PairSetAdd(string a, string b, bool areMutuallyExclusive)
+            if (map == null)
             {
-                _data.TryGetValue(a, out var map);
-
-                if (map == null)
-                {
-                    map = new ObjMap<bool>();
-                    _data[a] = map;
-                }
-
-                map[b] = areMutuallyExclusive;
+                map = new ObjMap<bool>();
+                _data[a] = map;
             }
+
+            map[b] = areMutuallyExclusive;
         }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/IRuleVisitorContext.cs b/src/graphql/Validation/IRuleVisitorContext.cs
index d0e55d34f..45139d8cd 100644
--- a/src/graphql/Validation/IRuleVisitorContext.cs
+++ b/src/graphql/Validation/IRuleVisitorContext.cs
@@ -2,36 +2,34 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Validation
-{
-    public interface IRuleVisitorContext 
-    {
-        ISchema Schema { get; }
+namespace Tanka.GraphQL.Validation;
 
-        ExecutableDocument Document { get; }
+public interface IRuleVisitorContext
+{
+    ExecutableDocument Document { get; }
 
-        IReadOnlyDictionary<string, object?> VariableValues { get; }
+    ExtensionData Extensions { get; }
+    ISchema Schema { get; }
 
-        TypeTracker Tracker { get; }
+    TypeTracker Tracker { get; }
 
-        ExtensionData Extensions { get; }
+    IReadOnlyDictionary<string, object?> VariableValues { get; }
 
-        void Error(string code, string message, params INode[] nodes);
+    void Error(string code, string message, params INode[] nodes);
 
-        void Error(string code, string message, INode node);
+    void Error(string code, string message, INode node);
 
-        void Error(string code, string message, IEnumerable<INode> nodes);
+    void Error(string code, string message, IEnumerable<INode> nodes);
 
-        List<VariableUsage> GetVariables(
-            INode rootNode);
+    List<VariableUsage> GetVariables(
+        INode rootNode);
 
-        IEnumerable<VariableUsage> GetRecursiveVariables(
-            OperationDefinition operation);
+    IEnumerable<VariableUsage> GetRecursiveVariables(
+        OperationDefinition operation);
 
-        FragmentDefinition? GetFragment(string name);
-        List<FragmentSpread> GetFragmentSpreads(SelectionSet node);
+    FragmentDefinition? GetFragment(string name);
+    List<FragmentSpread> GetFragmentSpreads(SelectionSet node);
 
-        IEnumerable<FragmentDefinition> GetRecursivelyReferencedFragments(
-            OperationDefinition operation);
-    }
+    IEnumerable<FragmentDefinition> GetRecursivelyReferencedFragments(
+        OperationDefinition operation);
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/NodeVisitor.cs b/src/graphql/Validation/NodeVisitor.cs
index d072bfa26..30cdefd3a 100644
--- a/src/graphql/Validation/NodeVisitor.cs
+++ b/src/graphql/Validation/NodeVisitor.cs
@@ -1,6 +1,5 @@
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Validation
-{
-    public delegate void NodeVisitor<in T>(T node) where T : INode;
-}
\ No newline at end of file
+namespace Tanka.GraphQL.Validation;
+
+public delegate void NodeVisitor<in T>(T node) where T : INode;
\ No newline at end of file
diff --git a/src/graphql/Validation/RuleVisitor.cs b/src/graphql/Validation/RuleVisitor.cs
index bd578a9f3..1156667c1 100644
--- a/src/graphql/Validation/RuleVisitor.cs
+++ b/src/graphql/Validation/RuleVisitor.cs
@@ -1,83 +1,80 @@
-
-
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class RuleVisitor
 {
-    public class RuleVisitor
-    {
-        public NodeVisitor<Argument> EnterArgument { get; set; }
+    public NodeVisitor<Argument> EnterArgument { get; set; }
+
+    public NodeVisitor<BooleanValue> EnterBooleanValue { get; set; }
+
+    public NodeVisitor<Directive> EnterDirective { get; set; }
+
+    public NodeVisitor<Directive> EnterDirectives { get; set; }
+
+    public NodeVisitor<ExecutableDocument> EnterDocument { get; set; }
 
-        public NodeVisitor<BooleanValue> EnterBooleanValue { get; set; }
+    public NodeVisitor<EnumValue> EnterEnumValue { get; set; }
 
-        public NodeVisitor<Directive> EnterDirective { get; set; }
+    public NodeVisitor<FieldSelection> EnterFieldSelection { get; set; }
 
-        public NodeVisitor<Directive> EnterDirectives { get; set; }
+    public NodeVisitor<FloatValue> EnterFloatValue { get; set; }
 
-        public NodeVisitor<ExecutableDocument> EnterDocument { get; set; }
+    public NodeVisitor<FragmentDefinition> EnterFragmentDefinition { get; set; }
 
-        public NodeVisitor<EnumValue> EnterEnumValue { get; set; }
+    public NodeVisitor<FragmentSpread> EnterFragmentSpread { get; set; }
 
-        public NodeVisitor<FieldSelection> EnterFieldSelection { get; set; }
+    public NodeVisitor<InlineFragment> EnterInlineFragment { get; set; }
 
-        public NodeVisitor<FloatValue> EnterFloatValue { get; set; }
+    public NodeVisitor<IntValue> EnterIntValue { get; set; }
 
-        public NodeVisitor<FragmentDefinition> EnterFragmentDefinition { get; set; }
+    public NodeVisitor<ListValue> EnterListValue { get; set; }
 
-        public NodeVisitor<FragmentSpread> EnterFragmentSpread { get; set; }
+    public NodeVisitor<NamedType> EnterNamedType { get; set; }
 
-        public NodeVisitor<FragmentSpread> LeaveFragmentSpread { get; set; }
+    public NodeVisitor<INode> EnterNode { get; set; }
 
-        public NodeVisitor<InlineFragment> EnterInlineFragment { get; set; }
+    public NodeVisitor<ObjectField> EnterObjectField { get; set; }
 
-        public NodeVisitor<IntValue> EnterIntValue { get; set; }
+    public NodeVisitor<ObjectValue> EnterObjectValue { get; set; }
 
-        public NodeVisitor<ListValue> EnterListValue { get; set; }
-        
-        public NodeVisitor<ObjectField> EnterObjectField { get; set; }
-        
-        public NodeVisitor<ObjectField> LeaveObjectField { get; set; }
+    public NodeVisitor<OperationDefinition> EnterOperationDefinition { get; set; }
 
-        public NodeVisitor<NamedType> EnterNamedType{ get; set; }
+    public NodeVisitor<SelectionSet> EnterSelectionSet { get; set; }
 
-        public NodeVisitor<INode> EnterNode{ get; set; }
-        
-        public NodeVisitor<ObjectValue> EnterObjectValue{ get; set; }
+    public NodeVisitor<StringValue> EnterStringValue { get; set; }
 
-        public NodeVisitor<OperationDefinition> EnterOperationDefinition{ get; set; }
+    public NodeVisitor<Variable> EnterVariable { get; set; }
 
-        public NodeVisitor<SelectionSet> EnterSelectionSet{ get; set; }
+    public NodeVisitor<VariableDefinition> EnterVariableDefinition { get; set; }
 
-        public NodeVisitor<StringValue> EnterStringValue{ get; set; }
+    public NodeVisitor<Argument> LeaveArgument { get; set; }
 
-        public NodeVisitor<Variable> EnterVariable{ get; set; }
+    public NodeVisitor<Directive> LeaveDirective { get; set; }
 
-        public NodeVisitor<VariableDefinition> EnterVariableDefinition{ get; set; }
+    public NodeVisitor<ExecutableDocument> LeaveDocument { get; set; }
 
-        public NodeVisitor<Argument> LeaveArgument{ get; set; }
+    public NodeVisitor<EnumValue> LeaveEnumValue { get; set; }
 
-        public NodeVisitor<Directive> LeaveDirective{ get; set; }
+    public NodeVisitor<FieldSelection> LeaveFieldSelection { get; set; }
 
-        public NodeVisitor<ExecutableDocument> LeaveDocument{ get; set; }
+    public NodeVisitor<FragmentDefinition> LeaveFragmentDefinition { get; set; }
 
-        public NodeVisitor<EnumValue> LeaveEnumValue{ get; set; }
+    public NodeVisitor<FragmentSpread> LeaveFragmentSpread { get; set; }
 
-        public NodeVisitor<FieldSelection> LeaveFieldSelection{ get; set; }
+    public NodeVisitor<InlineFragment> LeaveInlineFragment { get; set; }
 
-        public NodeVisitor<FragmentDefinition> LeaveFragmentDefinition{ get; set; }
+    public NodeVisitor<ListValue> LeaveListValue { get; set; }
 
-        public NodeVisitor<InlineFragment> LeaveInlineFragment{ get; set; }
+    public NodeVisitor<ObjectField> LeaveObjectField { get; set; }
 
-        public NodeVisitor<ListValue> LeaveListValue{ get; set; }
-        
-        public NodeVisitor<ObjectValue> LeaveObjectValue{ get; set; }
+    public NodeVisitor<ObjectValue> LeaveObjectValue { get; set; }
 
-        public NodeVisitor<OperationDefinition> LeaveOperationDefinition{ get; set; }
+    public NodeVisitor<OperationDefinition> LeaveOperationDefinition { get; set; }
 
-        public NodeVisitor<SelectionSet> LeaveSelectionSet{ get; set; }
+    public NodeVisitor<SelectionSet> LeaveSelectionSet { get; set; }
 
-        public NodeVisitor<Variable> LeaveVariable{ get; set; }
+    public NodeVisitor<Variable> LeaveVariable { get; set; }
 
-        public NodeVisitor<VariableDefinition> LeaveVariableDefinition{ get; set; }
-    }
+    public NodeVisitor<VariableDefinition> LeaveVariableDefinition { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/RulesWalker.cs b/src/graphql/Validation/RulesWalker.cs
index 683d9423c..e6cf47025 100644
--- a/src/graphql/Validation/RulesWalker.cs
+++ b/src/graphql/Validation/RulesWalker.cs
@@ -3,480 +3,474 @@
 using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
-using Argument = Tanka.GraphQL.Language.Nodes.Argument;
-using EnumValue = Tanka.GraphQL.Language.Nodes.EnumValue;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class RulesWalker : Visitor, IRuleVisitorContext
 {
-    public class RulesWalker : Visitor, IRuleVisitorContext
-    {
-        private readonly List<ValidationError> _errors =
-            new List<ValidationError>();
+    private readonly List<ValidationError> _errors = new();
 
-        private readonly Dictionary<OperationDefinition, List<FragmentDefinition>> _fragments =
-            new Dictionary<OperationDefinition, List<FragmentDefinition>>();
+    private readonly Dictionary<OperationDefinition, List<FragmentDefinition>> _fragments = new();
 
 
-        private readonly Dictionary<OperationDefinition, List<VariableUsage>> _variables
-            = new Dictionary<OperationDefinition, List<VariableUsage>>();
+    private readonly Dictionary<OperationDefinition, List<VariableUsage>> _variables = new();
 
-        public RulesWalker(
-            IEnumerable<CombineRule> rules,
-            ISchema schema,
-            ExecutableDocument document,
-            IReadOnlyDictionary<string, object?>? variableValues = null)
-        {
-            Schema = schema;
-            Document = document;
-            VariableValues = variableValues;
-            CreateVisitors(rules);
-        }
+    public RulesWalker(
+        IEnumerable<CombineRule> rules,
+        ISchema schema,
+        ExecutableDocument document,
+        IReadOnlyDictionary<string, object?>? variableValues = null)
+    {
+        Schema = schema;
+        Document = document;
+        VariableValues = variableValues;
+        CreateVisitors(rules);
+    }
 
-        public ExecutableDocument Document { get; }
+    public ExecutableDocument Document { get; }
 
-        public IReadOnlyDictionary<string, object?>? VariableValues { get; }
+    public IReadOnlyDictionary<string, object?>? VariableValues { get; }
 
-        public TypeTracker Tracker { get; protected set; }
+    public TypeTracker Tracker { get; protected set; }
 
-        public ExtensionData Extensions { get; } = new ExtensionData();
+    public ExtensionData Extensions { get; } = new();
 
-        public ISchema Schema { get; }
+    public ISchema Schema { get; }
 
-        public void Error(string code, string message, params INode[] nodes)
-        {
-            _errors.Add(new ValidationError(code, message, nodes));
-        }
+    public void Error(string code, string message, params INode[] nodes)
+    {
+        _errors.Add(new ValidationError(code, message, nodes));
+    }
 
-        public void Error(string code, string message, INode node)
-        {
-            _errors.Add(new ValidationError(code, message, node));
-        }
+    public void Error(string code, string message, INode node)
+    {
+        _errors.Add(new ValidationError(code, message, node));
+    }
 
-        public void Error(string code, string message, IEnumerable<INode> nodes)
-        {
-            _errors.Add(new ValidationError(code, message, nodes));
-        }
+    public void Error(string code, string message, IEnumerable<INode> nodes)
+    {
+        _errors.Add(new ValidationError(code, message, nodes));
+    }
 
-        public List<VariableUsage> GetVariables(
-            INode rootNode)
-        {
-            var usages = new List<VariableUsage>();
+    public List<VariableUsage> GetVariables(
+        INode rootNode)
+    {
+        var usages = new List<VariableUsage>();
 
-            var visitor = new RulesWalker(new CombineRule[]
+        var visitor = new RulesWalker(new CombineRule[]
+            {
+                (context, rule) =>
                 {
-                    (context, rule) =>
+                    rule.EnterVariable += node =>
                     {
-                        rule.EnterVariable += node =>
+                        usages.Add(new VariableUsage
                         {
-                            usages.Add(new VariableUsage
-                            {
-                                Node = node,
-                                Type = context.Tracker.InputType,
-                                DefaultValue = context.Tracker.DefaultValue
-                            });
-                        };
-                    }
-                },
-                Schema,
-                Document,
-                VariableValues);
+                            Node = node,
+                            Type = context.Tracker.InputType,
+                            DefaultValue = context.Tracker.DefaultValue
+                        });
+                    };
+                }
+            },
+            Schema,
+            Document,
+            VariableValues);
 
 
-            visitor.BeginVisitNode(rootNode);
+        visitor.BeginVisitNode(rootNode);
 
-            return usages;
-        }
+        return usages;
+    }
 
-        public IEnumerable<VariableUsage> GetRecursiveVariables(
-            OperationDefinition operation)
-        {
-            if (_variables.TryGetValue(operation, out var results)) 
-                return results;
+    public IEnumerable<VariableUsage> GetRecursiveVariables(
+        OperationDefinition operation)
+    {
+        if (_variables.TryGetValue(operation, out var results))
+            return results;
 
-            var usages = GetVariables(operation);
+        var usages = GetVariables(operation);
 
-            foreach (var fragment in GetRecursivelyReferencedFragments(operation))
-                usages.AddRange(GetVariables(fragment));
+        foreach (var fragment in GetRecursivelyReferencedFragments(operation))
+            usages.AddRange(GetVariables(fragment));
 
-            _variables[operation] = usages;
+        _variables[operation] = usages;
 
-            return usages;
-        }
+        return usages;
+    }
 
-        public FragmentDefinition? GetFragment(string name)
-        {
-            return Document.FragmentDefinitions
-                ?.SingleOrDefault(f => f.FragmentName == name);
-        }
+    public FragmentDefinition? GetFragment(string name)
+    {
+        return Document.FragmentDefinitions
+            ?.SingleOrDefault(f => f.FragmentName == name);
+    }
 
-        public List<FragmentSpread> GetFragmentSpreads(SelectionSet node)
-        {
-            var spreads = new List<FragmentSpread>();
+    public List<FragmentSpread> GetFragmentSpreads(SelectionSet node)
+    {
+        var spreads = new List<FragmentSpread>();
 
-            var setsToVisit = new Stack<SelectionSet>(new[] {node});
+        var setsToVisit = new Stack<SelectionSet>(new[] { node });
 
-            while (setsToVisit.Count > 0)
-            {
-                var set = setsToVisit.Pop();
+        while (setsToVisit.Count > 0)
+        {
+            var set = setsToVisit.Pop();
 
-                foreach (var selection in set)
-                    switch (selection)
+            foreach (var selection in set)
+                switch (selection)
+                {
+                    case FragmentSpread spread:
+                        spreads.Add(spread);
+                        break;
+                    case InlineFragment inlineFragment:
                     {
-                        case FragmentSpread spread:
-                            spreads.Add(spread);
-                            break;
-                        case InlineFragment inlineFragment:
-                        {
-                            setsToVisit.Push(inlineFragment.SelectionSet);
-                            break;
-                        }
-                        case FieldSelection fieldSelection:
-                        {
-                            if (fieldSelection.SelectionSet != null) setsToVisit.Push(fieldSelection.SelectionSet);
-                            break;
-                        }
+                        setsToVisit.Push(inlineFragment.SelectionSet);
+                        break;
                     }
-            }
-
-            return spreads;
+                    case FieldSelection fieldSelection:
+                    {
+                        if (fieldSelection.SelectionSet != null) setsToVisit.Push(fieldSelection.SelectionSet);
+                        break;
+                    }
+                }
         }
 
-        public IEnumerable<FragmentDefinition> GetRecursivelyReferencedFragments(
-            OperationDefinition operation)
+        return spreads;
+    }
+
+    public IEnumerable<FragmentDefinition> GetRecursivelyReferencedFragments(
+        OperationDefinition operation)
+    {
+        if (_fragments.TryGetValue(operation, out var results))
+            return results;
+
+        var fragments = new List<FragmentDefinition>();
+        var nodesToVisit = new Stack<SelectionSet>(new[]
         {
-            if (_fragments.TryGetValue(operation, out var results))
-                return results;
+            operation.SelectionSet
+        });
+        var collectedNames = new Dictionary<Name, bool>();
 
-            var fragments = new List<FragmentDefinition>();
-            var nodesToVisit = new Stack<SelectionSet>(new[]
-            {
-                operation.SelectionSet
-            });
-            var collectedNames = new Dictionary<Name, bool>();
+        while (nodesToVisit.Count > 0)
+        {
+            var node = nodesToVisit.Pop();
 
-            while (nodesToVisit.Count > 0)
+            foreach (var spread in GetFragmentSpreads(node))
             {
-                var node = nodesToVisit.Pop();
-
-                foreach (var spread in GetFragmentSpreads(node))
+                var fragName = spread.FragmentName;
+                if (!collectedNames.ContainsKey(fragName))
                 {
-                    var fragName = spread.FragmentName;
-                    if (!collectedNames.ContainsKey(fragName))
-                    {
-                        collectedNames[fragName] = true;
+                    collectedNames[fragName] = true;
 
-                        var fragment = GetFragment(fragName);
-                        if (fragment != null)
-                        {
-                            fragments.Add(fragment);
-                            nodesToVisit.Push(fragment.SelectionSet);
-                        }
+                    var fragment = GetFragment(fragName);
+                    if (fragment != null)
+                    {
+                        fragments.Add(fragment);
+                        nodesToVisit.Push(fragment.SelectionSet);
                     }
                 }
             }
-
-            _fragments[operation] = fragments;
-
-            return fragments;
         }
 
-        public override Argument BeginVisitArgument(Argument argument)
-        {
-            {
-                Tracker.EnterArgument?.Invoke(argument);
-            }
+        _fragments[operation] = fragments;
 
-            return base.BeginVisitArgument(argument);
-        }
+        return fragments;
+    }
 
-        public override BooleanValue BeginVisitBooleanValue(
-            BooleanValue value)
+    public override Argument BeginVisitArgument(Argument argument)
+    {
         {
-            {
-                Tracker.EnterBooleanValue?.Invoke(value);
-            }
-
-            return base.BeginVisitBooleanValue(value);
+            Tracker.EnterArgument?.Invoke(argument);
         }
 
-        public override Directive BeginVisitDirective(Directive directive)
-        {
-            Tracker.EnterDirective?.Invoke(directive);
-
-            var _ = base.BeginVisitDirective(directive);
-
-            Tracker.LeaveDirective?.Invoke(_);
-            return _;
-        }
+        return base.BeginVisitArgument(argument);
+    }
 
-        public override EnumValue BeginVisitEnumValue(EnumValue value)
+    public override BooleanValue BeginVisitBooleanValue(
+        BooleanValue value)
+    {
         {
-            {
-                Tracker.EnterEnumValue?.Invoke(value);
-            }
+            Tracker.EnterBooleanValue?.Invoke(value);
+        }
 
-            var _ = base.BeginVisitEnumValue(value);
+        return base.BeginVisitBooleanValue(value);
+    }
 
+    public override Directive BeginVisitDirective(Directive directive)
+    {
+        Tracker.EnterDirective?.Invoke(directive);
 
-            {
-                Tracker.LeaveEnumValue?.Invoke(value);
-            }
+        var _ = base.BeginVisitDirective(directive);
 
-            return _;
-        }
+        Tracker.LeaveDirective?.Invoke(_);
+        return _;
+    }
 
-        public override FieldSelection BeginVisitFieldSelection(
-            FieldSelection selection)
+    public override EnumValue BeginVisitEnumValue(EnumValue value)
+    {
         {
-            Tracker.EnterFieldSelection?.Invoke(selection);
-
-            return base.BeginVisitFieldSelection(selection);
+            Tracker.EnterEnumValue?.Invoke(value);
         }
 
-        public override FloatValue BeginVisitFloatValue(
-            FloatValue value)
-        {
-            {
-                Tracker.EnterFloatValue?.Invoke(value);
-            }
+        var _ = base.BeginVisitEnumValue(value);
 
-            return base.BeginVisitFloatValue(value);
-        }
 
-        public override FragmentDefinition BeginVisitFragmentDefinition(
-            FragmentDefinition node)
         {
-            {
-                Tracker.EnterFragmentDefinition?.Invoke(node);
-            }
+            Tracker.LeaveEnumValue?.Invoke(value);
+        }
 
-            var result = base.BeginVisitFragmentDefinition(node);
+        return _;
+    }
 
+    public override FieldSelection BeginVisitFieldSelection(
+        FieldSelection selection)
+    {
+        Tracker.EnterFieldSelection?.Invoke(selection);
 
-            {
-                Tracker.LeaveFragmentDefinition?.Invoke(node);
-            }
+        return base.BeginVisitFieldSelection(selection);
+    }
 
-            return result;
+    public override FloatValue BeginVisitFloatValue(
+        FloatValue value)
+    {
+        {
+            Tracker.EnterFloatValue?.Invoke(value);
         }
 
-        public override FragmentSpread BeginVisitFragmentSpread(
-            FragmentSpread node)
+        return base.BeginVisitFloatValue(value);
+    }
+
+    public override FragmentDefinition BeginVisitFragmentDefinition(
+        FragmentDefinition node)
+    {
         {
-            {
-                Tracker.EnterFragmentSpread?.Invoke(node);
-            }
+            Tracker.EnterFragmentDefinition?.Invoke(node);
+        }
 
-            var result = base.BeginVisitFragmentSpread(node);
+        var result = base.BeginVisitFragmentDefinition(node);
 
-            Tracker.LeaveFragmentSpread?.Invoke(node);
 
-            return result;
+        {
+            Tracker.LeaveFragmentDefinition?.Invoke(node);
         }
 
-        public override InlineFragment BeginVisitInlineFragment(
-            InlineFragment inlineFragment)
+        return result;
+    }
+
+    public override FragmentSpread BeginVisitFragmentSpread(
+        FragmentSpread node)
+    {
         {
-            {
-                Tracker.EnterInlineFragment?.Invoke(inlineFragment);
-            }
+            Tracker.EnterFragmentSpread?.Invoke(node);
+        }
 
-            var _ = base.BeginVisitInlineFragment(inlineFragment);
+        var result = base.BeginVisitFragmentSpread(node);
 
+        Tracker.LeaveFragmentSpread?.Invoke(node);
 
-            {
-                Tracker.LeaveInlineFragment?.Invoke(inlineFragment);
-            }
+        return result;
+    }
 
-            return _;
+    public override InlineFragment BeginVisitInlineFragment(
+        InlineFragment inlineFragment)
+    {
+        {
+            Tracker.EnterInlineFragment?.Invoke(inlineFragment);
         }
 
-        public override IntValue BeginVisitIntValue(IntValue value)
-        {
-            {
-                Tracker.EnterIntValue?.Invoke(value);
-            }
+        var _ = base.BeginVisitInlineFragment(inlineFragment);
 
-            return base.BeginVisitIntValue(value);
-        }
 
-        public override ListValue BeginVisitListValue(ListValue node)
         {
-            {
-                Tracker.EnterListValue?.Invoke(node);
-            }
-
-            return base.BeginVisitListValue(node);
+            Tracker.LeaveInlineFragment?.Invoke(inlineFragment);
         }
-        
-        public override NamedType BeginVisitNamedType(
-            NamedType typeCondition)
-        {
-            {
-                Tracker.EnterNamedType?.Invoke(typeCondition);
-            }
 
-            return base.BeginVisitNamedType(typeCondition);
-        }
+        return _;
+    }
 
-        public override INode BeginVisitNode(INode node)
+    public override IntValue BeginVisitIntValue(IntValue value)
+    {
         {
-            Tracker.EnterNode?.Invoke(node);
-            return base.BeginVisitNode(node);
+            Tracker.EnterIntValue?.Invoke(value);
         }
 
-        public override ObjectValue BeginVisitObjectValue(
-            ObjectValue node)
-        {
-            {
-                Tracker.EnterObjectValue?.Invoke(node);
-            }
-
-            return base.BeginVisitObjectValue(node);
-        }
+        return base.BeginVisitIntValue(value);
+    }
 
-        public override ObjectField BeginVisitObjectField(ObjectField node)
+    public override ListValue BeginVisitListValue(ListValue node)
+    {
         {
-            Tracker.EnterObjectField?.Invoke(node);
-            return base.BeginVisitObjectField(node);
+            Tracker.EnterListValue?.Invoke(node);
         }
 
-        public override OperationDefinition BeginVisitOperationDefinition(
-            OperationDefinition definition)
-        {
-            {
-                Tracker.EnterOperationDefinition?.Invoke(definition);
-            }
+        return base.BeginVisitListValue(node);
+    }
 
-            return base.BeginVisitOperationDefinition(definition);
+    public override NamedType BeginVisitNamedType(
+        NamedType typeCondition)
+    {
+        {
+            Tracker.EnterNamedType?.Invoke(typeCondition);
         }
 
-        public override SelectionSet BeginVisitSelectionSet(
-            SelectionSet selectionSet)
-        {
-            {
-                Tracker.EnterSelectionSet?.Invoke(selectionSet);
-            }
+        return base.BeginVisitNamedType(typeCondition);
+    }
 
-            var _ = base.BeginVisitSelectionSet(selectionSet);
+    public override INode BeginVisitNode(INode node)
+    {
+        Tracker.EnterNode?.Invoke(node);
+        return base.BeginVisitNode(node);
+    }
 
+    public override ObjectValue BeginVisitObjectValue(
+        ObjectValue node)
+    {
+        {
+            Tracker.EnterObjectValue?.Invoke(node);
+        }
 
-            {
-                Tracker.LeaveSelectionSet?.Invoke(selectionSet);
-            }
+        return base.BeginVisitObjectValue(node);
+    }
 
-            return _;
-        }
+    public override ObjectField BeginVisitObjectField(ObjectField node)
+    {
+        Tracker.EnterObjectField?.Invoke(node);
+        return base.BeginVisitObjectField(node);
+    }
 
-        public override StringValue BeginVisitStringValue(
-            StringValue value)
+    public override OperationDefinition BeginVisitOperationDefinition(
+        OperationDefinition definition)
+    {
         {
-            {
-                Tracker.EnterStringValue?.Invoke(value);
-            }
-
-            return base.BeginVisitStringValue(value);
+            Tracker.EnterOperationDefinition?.Invoke(definition);
         }
 
-        public override Variable BeginVisitVariable(Variable variable)
+        return base.BeginVisitOperationDefinition(definition);
+    }
+
+    public override SelectionSet BeginVisitSelectionSet(
+        SelectionSet selectionSet)
+    {
         {
-            Tracker.EnterVariable?.Invoke(variable);
-            return base.BeginVisitVariable(variable);
+            Tracker.EnterSelectionSet?.Invoke(selectionSet);
         }
 
-        public override VariableDefinition BeginVisitVariableDefinition(
-            VariableDefinition node)
-        {
-            Tracker.EnterVariableDefinition?.Invoke(node);
+        var _ = base.BeginVisitSelectionSet(selectionSet);
 
-            var _ = base.BeginVisitVariableDefinition(node);
 
-            Tracker.LeaveVariableDefinition?.Invoke(node);
-            return _;
+        {
+            Tracker.LeaveSelectionSet?.Invoke(selectionSet);
         }
 
-        public override Argument EndVisitArgument(Argument argument)
-        {
-            {
-                Tracker.LeaveArgument?.Invoke(argument);
-            }
+        return _;
+    }
 
-            return base.EndVisitArgument(argument);
+    public override StringValue BeginVisitStringValue(
+        StringValue value)
+    {
+        {
+            Tracker.EnterStringValue?.Invoke(value);
         }
 
-        public override FieldSelection EndVisitFieldSelection(
-            FieldSelection selection)
-        {
-            {
-                Tracker.LeaveFieldSelection?.Invoke(selection);
-            }
+        return base.BeginVisitStringValue(value);
+    }
 
-            return base.EndVisitFieldSelection(selection);
-        }
+    public override Variable BeginVisitVariable(Variable variable)
+    {
+        Tracker.EnterVariable?.Invoke(variable);
+        return base.BeginVisitVariable(variable);
+    }
 
-        public override ListValue EndVisitListValue(ListValue node)
-        {
-            {
-                Tracker.LeaveListValue?.Invoke(node);
-            }
+    public override VariableDefinition BeginVisitVariableDefinition(
+        VariableDefinition node)
+    {
+        Tracker.EnterVariableDefinition?.Invoke(node);
 
-            return base.EndVisitListValue(node);
-        }
+        var _ = base.BeginVisitVariableDefinition(node);
 
-        public override ObjectValue EndVisitObjectValue(ObjectValue node)
-        {
-            {
-                Tracker.LeaveObjectValue?.Invoke(node);
-            }
+        Tracker.LeaveVariableDefinition?.Invoke(node);
+        return _;
+    }
 
-            return base.EndVisitObjectValue(node);
+    public override Argument EndVisitArgument(Argument argument)
+    {
+        {
+            Tracker.LeaveArgument?.Invoke(argument);
         }
 
-        public override OperationDefinition EndVisitOperationDefinition(
-            OperationDefinition definition)
-        {
-            {
-                Tracker.LeaveOperationDefinition?.Invoke(definition);
-            }
+        return base.EndVisitArgument(argument);
+    }
 
-            return base.EndVisitOperationDefinition(definition);
+    public override FieldSelection EndVisitFieldSelection(
+        FieldSelection selection)
+    {
+        {
+            Tracker.LeaveFieldSelection?.Invoke(selection);
         }
 
-        public override Variable EndVisitVariable(Variable variable)
+        return base.EndVisitFieldSelection(selection);
+    }
+
+    public override ListValue EndVisitListValue(ListValue node)
+    {
         {
-            Tracker.LeaveVariable?.Invoke(variable);
-            return base.EndVisitVariable(variable);
+            Tracker.LeaveListValue?.Invoke(node);
         }
 
-        public ValidationResult Validate()
+        return base.EndVisitListValue(node);
+    }
+
+    public override ObjectValue EndVisitObjectValue(ObjectValue node)
+    {
         {
-            Visit(Document);
-            return BuildResult();
+            Tracker.LeaveObjectValue?.Invoke(node);
         }
 
-        public override void Visit(ExecutableDocument document)
+        return base.EndVisitObjectValue(node);
+    }
+
+    public override OperationDefinition EndVisitOperationDefinition(
+        OperationDefinition definition)
+    {
         {
-            Tracker.EnterDocument?.Invoke(document);
+            Tracker.LeaveOperationDefinition?.Invoke(definition);
+        }
 
-            base.Visit(document);
+        return base.EndVisitOperationDefinition(definition);
+    }
 
-            Tracker.LeaveDocument?.Invoke(document);
-        }
+    public override Variable EndVisitVariable(Variable variable)
+    {
+        Tracker.LeaveVariable?.Invoke(variable);
+        return base.EndVisitVariable(variable);
+    }
 
-        protected void CreateVisitors(IEnumerable<CombineRule> rules)
-        {
-            Tracker = new TypeTracker(Schema);
+    public ValidationResult Validate()
+    {
+        Visit(Document);
+        return BuildResult();
+    }
 
-            foreach (var createRule in rules) createRule(this, Tracker);
-        }
+    public override void Visit(ExecutableDocument document)
+    {
+        Tracker.EnterDocument?.Invoke(document);
+
+        base.Visit(document);
+
+        Tracker.LeaveDocument?.Invoke(document);
+    }
 
-        private ValidationResult BuildResult()
+    protected void CreateVisitors(IEnumerable<CombineRule> rules)
+    {
+        Tracker = new TypeTracker(Schema);
+
+        foreach (var createRule in rules) createRule(this, Tracker);
+    }
+
+    private ValidationResult BuildResult()
+    {
+        return new ValidationResult
         {
-            return new ValidationResult
-            {
-                Errors = _errors,
-                Extensions = Extensions.Data
-            };
-        }
+            Errors = _errors,
+            Extensions = Extensions.Data
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/TypeTracker.cs b/src/graphql/Validation/TypeTracker.cs
index b17f86700..d90cff1b7 100644
--- a/src/graphql/Validation/TypeTracker.cs
+++ b/src/graphql/Validation/TypeTracker.cs
@@ -24,15 +24,9 @@ public TypeTracker(ISchema schema)
 
             Types.Push(root);
         };
-        LeaveOperationDefinition = node =>
-        {
-            Types.TryPop(out _);
-        };
+        LeaveOperationDefinition = node => { Types.TryPop(out _); };
 
-        EnterSelectionSet = node =>
-        {
-            ParentTypes.Push(CurrentType);
-        };
+        EnterSelectionSet = node => { ParentTypes.Push(CurrentType); };
 
 
         LeaveSelectionSet = node => { ParentTypes.TryPop(out _); };
@@ -172,7 +166,7 @@ public TypeTracker(ISchema schema)
             DefaultValues.TryPop(out _);
             InputTypes.TryPop(out _);
         };
-        
+
         EnterListValue = node =>
         {
             /*if (InputType is not null)
@@ -182,7 +176,7 @@ public TypeTracker(ISchema schema)
             */
 
             // List positions never have a default value
-            
+
             DefaultValues.Push(null);
         };
         LeaveListValue = node =>
diff --git a/src/graphql/Validation/ValidationError.cs b/src/graphql/Validation/ValidationError.cs
index 4bcc213c3..dd61fb8ce 100644
--- a/src/graphql/Validation/ValidationError.cs
+++ b/src/graphql/Validation/ValidationError.cs
@@ -4,82 +4,76 @@
 using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 
+namespace Tanka.GraphQL.Validation;
 
-namespace Tanka.GraphQL.Validation
+public class ValidationError
 {
-    public class ValidationError
+    private readonly List<INode> _nodes = new();
+
+    public ValidationError(string message, params INode[] nodes)
     {
-        private readonly List<INode> _nodes = new List<INode>();
+        Message = message;
+        _nodes.AddRange(nodes);
+    }
 
-        public ValidationError(string message, params INode[] nodes)
-        {
-            Message = message;
-            _nodes.AddRange(nodes);
-        }
+    public ValidationError(string code, string message, IEnumerable<INode> nodes)
+        : this(message, nodes?.ToArray() ?? Array.Empty<INode>())
+    {
+        Code = code;
+    }
 
-        public ValidationError(string code, string message, IEnumerable<INode> nodes)
-            : this(message, nodes?.ToArray() ?? Array.Empty<INode>())
-        {
-            Code = code;
-        }
+    public ValidationError(string code, string message, INode node)
+        : this(code, message, new[] { node })
+    {
+    }
 
-        public ValidationError(string code, string message, INode node)
-            : this(code, message, new[] {node})
-        {
-        }
+    public string Code { get; set; }
 
-        public string Message { get; set; }
+    public string Message { get; set; }
 
-        public IEnumerable<INode> Nodes => _nodes;
+    public IEnumerable<INode> Nodes => _nodes;
 
-        public string Code { get; set; }
+    public override string ToString()
+    {
+        var builder = new StringBuilder();
+        builder.Append(Message);
 
-        public override string ToString()
+        if (Nodes.Any())
         {
-            var builder = new StringBuilder();
-            builder.Append(Message);
-
-            if (Nodes.Any())
-            {
-                if (!Message.EndsWith("."))
-                    builder.Append(". ");
+            if (!Message.EndsWith("."))
+                builder.Append(". ");
 
-                builder.Append("At ");
+            builder.Append("At ");
 
-                foreach (var node in Nodes)
-                {
-                    if (node.Location != null)
-                    {
-                        builder.Append($"{node.Kind}@{node.Location}");
-                    }
-                    else
-                    {
-                        builder.Append($"{node.Kind}");
-                    }
+            foreach (var node in Nodes)
+            {
+                if (node.Location != null)
+                    builder.Append($"{node.Kind}@{node.Location}");
+                else
+                    builder.Append($"{node.Kind}");
 
-                    builder.Append(", ");
-                }
+                builder.Append(", ");
             }
-
-            return builder.ToString().Trim().TrimEnd(',');
         }
 
-        public ExecutionError ToError()
+        return builder.ToString().Trim().TrimEnd(',');
+    }
+
+    public ExecutionError ToError()
+    {
+        return new ExecutionError
         {
-            return new ExecutionError()
+            Message = ToString(),
+            Locations = Nodes.Where(n => n.Location != null).Select(n => n.Location.Value).ToList(),
+            Extensions = new Dictionary<string, object>
             {
-                Message = ToString(),
-                Locations = Nodes.Where(n => n.Location != null).Select(n => n.Location.Value).ToList(),
-                Extensions = new Dictionary<string, object>
                 {
+                    "doc", new
                     {
-                        "doc", new
-                        {
-                            section = Code
-                        }
+                        section = Code
                     }
                 }
-            };
-        }
+            }
+        };
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/ValidationErrorCodes.cs b/src/graphql/Validation/ValidationErrorCodes.cs
index 5dd52f80c..857382afa 100644
--- a/src/graphql/Validation/ValidationErrorCodes.cs
+++ b/src/graphql/Validation/ValidationErrorCodes.cs
@@ -1,66 +1,65 @@
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+/// <summary>
+///     References to sections of https://spec.graphql.org/June2018
+/// </summary>
+public static class ValidationErrorCodes
 {
-    /// <summary>
-    ///     References to sections of https://spec.graphql.org/June2018
-    /// </summary>
-    public static class ValidationErrorCodes
-    {
-        public const string R511ExecutableDefinitions = "5.1.1 Executable Definitions";
+    public const string R511ExecutableDefinitions = "5.1.1 Executable Definitions";
+
+    public const string R5211OperationNameUniqueness = "5.2.1.1 Operation Name Uniqueness";
+
+    public const string R5221LoneAnonymousOperation = "5.2.2.1 Lone Anonymous Operation";
 
-        public const string R5211OperationNameUniqueness = "5.2.1.1 Operation Name Uniqueness";
+    public const string R5231SingleRootField = "5.2.3.1 Single root field";
 
-        public const string R5221LoneAnonymousOperation = "5.2.2.1 Lone Anonymous Operation";
+    public const string R531FieldSelections = "5.3.1 Field Selections on Objects, Interfaces, and Unions Types";
 
-        public const string R5231SingleRootField = "5.2.3.1 Single root field";
+    public const string R532FieldSelectionMerging = "5.3.2 Field Selection Merging";
 
-        public const string R531FieldSelections = "5.3.1 Field Selections on Objects, Interfaces, and Unions Types";
+    public const string R533LeafFieldSelections = "5.3.3 Leaf Field Selections";
 
-        public const string R532FieldSelectionMerging = "5.3.2 Field Selection Merging";
+    public const string R541ArgumentNames = "5.4.1 Argument Names";
 
-        public const string R533LeafFieldSelections = "5.3.3 Leaf Field Selections";
+    public const string R5421RequiredArguments = "5.4.2.1 Required Arguments";
 
-        public const string R541ArgumentNames = "5.4.1 Argument Names";
+    public const string R542ArgumentUniqueness = "5.4.2 Argument Uniqueness";
 
-        public const string R5421RequiredArguments = "5.4.2.1 Required Arguments";
+    public const string R5511FragmentNameUniqueness = "5.5.1.1 Fragment Name Uniqueness";
 
-        public const string R542ArgumentUniqueness = "5.4.2 Argument Uniqueness";
+    public const string R5512FragmentSpreadTypeExistence = "5.5.1.2 Fragment Spread Type Existence";
 
-        public const string R5511FragmentNameUniqueness = "5.5.1.1 Fragment Name Uniqueness";
+    public const string R5513FragmentsOnCompositeTypes = "5.5.1.3 Fragments On Composite Types";
 
-        public const string R5512FragmentSpreadTypeExistence = "5.5.1.2 Fragment Spread Type Existence";
+    public const string R5514FragmentsMustBeUsed = "5.5.1.4 Fragments Must Be Used";
 
-        public const string R5513FragmentsOnCompositeTypes = "5.5.1.3 Fragments On Composite Types";
+    public const string R5521FragmentSpreadTargetDefined = "5.5.2.1 Fragment Spread Target Defined";
 
-        public const string R5514FragmentsMustBeUsed = "5.5.1.4 Fragments Must Be Used";
+    public const string R5522FragmentSpreadsMustNotFormCycles = "5.5.2.2 Fragment spreads must not form cycles";
 
-        public const string R5521FragmentSpreadTargetDefined = "5.5.2.1 Fragment Spread Target Defined";
+    public const string R5523FragmentSpreadIsPossible = "5.5.2.3 Fragment spread is possible";
 
-        public const string R5522FragmentSpreadsMustNotFormCycles = "5.5.2.2 Fragment spreads must not form cycles";
+    public const string R561ValuesOfCorrectType = "5.6.1 Values of Correct Type";
 
-        public const string R5523FragmentSpreadIsPossible = "5.5.2.3 Fragment spread is possible";
+    public const string R562InputObjectFieldNames = "5.6.2 Input Object Field Names";
 
-        public const string R561ValuesOfCorrectType = "5.6.1 Values of Correct Type";
+    public const string R563InputObjectFieldUniqueness = "5.6.3 Input Object Field Uniqueness";
 
-        public const string R562InputObjectFieldNames = "5.6.2 Input Object Field Names";
+    public const string R564InputObjectRequiredFields = "5.6.4 Input Object Required Fields";
 
-        public const string R563InputObjectFieldUniqueness = "5.6.3 Input Object Field Uniqueness";
+    public const string R571DirectivesAreDefined = "5.7.1 Directives Are Defined";
 
-        public const string R564InputObjectRequiredFields = "5.6.4 Input Object Required Fields";
+    public const string R572DirectivesAreInValidLocations = "5.7.2 Directives Are In Valid Locations";
 
-        public const string R571DirectivesAreDefined = "5.7.1 Directives Are Defined";
+    public const string R573DirectivesAreUniquePerLocation = "5.7.3 Directives Are Unique Per Location";
 
-        public const string R572DirectivesAreInValidLocations = "5.7.2 Directives Are In Valid Locations";
+    public const string R582VariablesAreInputTypes = "5.8.2 Variables Are Input Types";
 
-        public const string R573DirectivesAreUniquePerLocation = "5.7.3 Directives Are Unique Per Location";
+    public const string R583AllVariableUsesDefined = "5.8.3 All Variable Uses Defined";
 
-        public static string R581VariableUniqueness = "5.8.1 Variable Uniqueness";
-       
-        public const string R582VariablesAreInputTypes = "5.8.2 Variables Are Input Types";
+    public const string R584AllVariablesUsed = "5.8.4 All Variables Used";
 
-        public const string R583AllVariableUsesDefined = "5.8.3 All Variable Uses Defined";
-        
-        public const string R584AllVariablesUsed = "5.8.4 All Variables Used";
+    public const string R585AllVariableUsagesAreAllowed = "5.8.5 All Variable Usages Are Allowed";
 
-        public const string R585AllVariableUsagesAreAllowed = "5.8.5 All Variable Usages Are Allowed";
-    }
+    public static string R581VariableUniqueness = "5.8.1 Variable Uniqueness";
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/ValidationException.cs b/src/graphql/Validation/ValidationException.cs
index 41dd1bdcf..4c6c708b3 100644
--- a/src/graphql/Validation/ValidationException.cs
+++ b/src/graphql/Validation/ValidationException.cs
@@ -1,14 +1,13 @@
 using System;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class ValidationException : Exception
 {
-    public class ValidationException : Exception
+    public ValidationException(ValidationResult result) : base(result.ToString())
     {
-        public ValidationException(ValidationResult result) : base(result.ToString())
-        {
-            Result = result;
-        }
-
-        public ValidationResult Result { get; }
+        Result = result;
     }
+
+    public ValidationResult Result { get; }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/ValidationResult.cs b/src/graphql/Validation/ValidationResult.cs
index 8bdfc07b2..473caac35 100644
--- a/src/graphql/Validation/ValidationResult.cs
+++ b/src/graphql/Validation/ValidationResult.cs
@@ -3,31 +3,30 @@
 using System.Linq;
 using System.Text;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public class ValidationResult
 {
-    public class ValidationResult
-    {
-        public IEnumerable<ValidationError> Errors { get; set; } = Array.Empty<ValidationError>();
+    public IEnumerable<ValidationError> Errors { get; set; } = Array.Empty<ValidationError>();
 
-        public IReadOnlyDictionary<string, object>? Extensions { get; set; }
+    public IReadOnlyDictionary<string, object>? Extensions { get; set; }
 
-        public bool IsValid => !Errors.Any();
+    public bool IsValid => !Errors.Any();
 
-        public static ValidationResult Success => new();
+    public static ValidationResult Success => new();
 
-        public override string ToString()
-        {
-            var builder = new StringBuilder();
-            builder.AppendLine($"IsValid: {IsValid}");
+    public override string ToString()
+    {
+        var builder = new StringBuilder();
+        builder.AppendLine($"IsValid: {IsValid}");
 
-            if (!IsValid)
-            {
-                builder.AppendLine("ExecutionErrors:");
-                foreach (var validationError in Errors) builder.AppendLine(validationError.ToString());
-            }
+        if (!IsValid)
+        {
+            builder.AppendLine("ExecutionErrors:");
+            foreach (var validationError in Errors) builder.AppendLine(validationError.ToString());
+        }
 
 
-            return builder.ToString();
-        }
+        return builder.ToString();
     }
 }
\ No newline at end of file
diff --git a/src/graphql/Validation/Validator.cs b/src/graphql/Validation/Validator.cs
index d6f9c80c5..d8dd6d4e0 100644
--- a/src/graphql/Validation/Validator.cs
+++ b/src/graphql/Validation/Validator.cs
@@ -2,23 +2,22 @@
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.Validation
+namespace Tanka.GraphQL.Validation;
+
+public static class Validator
 {
-    public static class Validator
+    public static ValidationResult Validate(
+        IEnumerable<CombineRule> rules,
+        ISchema schema,
+        ExecutableDocument document,
+        IReadOnlyDictionary<string, object?>? variableValues = null)
     {
-        public static ValidationResult Validate(
-            IEnumerable<CombineRule> rules,
-            ISchema schema,
-            ExecutableDocument document,
-            IReadOnlyDictionary<string, object?>? variableValues = null)
-        {
-            var visitor = new RulesWalker(
-                rules,
-                schema,
-                document,
-                variableValues);
+        var visitor = new RulesWalker(
+            rules,
+            schema,
+            document,
+            variableValues);
 
-            return visitor.Validate();
-        }
+        return visitor.Validate();
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueCoercionException.cs b/src/graphql/ValueCoercionException.cs
index c22d65625..24007dd53 100644
--- a/src/graphql/ValueCoercionException.cs
+++ b/src/graphql/ValueCoercionException.cs
@@ -1,19 +1,18 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class ValueCoercionException : Exception
 {
-    public class ValueCoercionException : Exception
+    public ValueCoercionException(string message, object? value, INode type)
+        : base(message)
     {
-        public ValueCoercionException(string message, object? value, INode type)
-            : base(message)
-        {
-            Type = type;
-            Value = value;
-        }
+        Type = type;
+        Value = value;
+    }
 
-        public INode Type { get; }
+    public INode Type { get; }
 
-        public object? Value { get; set; }
-    }
+    public object? Value { get; set; }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/CompleteValueException.cs b/src/graphql/ValueResolution/CompleteValueException.cs
index 2fa6aa1bc..592a63f30 100644
--- a/src/graphql/ValueResolution/CompleteValueException.cs
+++ b/src/graphql/ValueResolution/CompleteValueException.cs
@@ -3,24 +3,23 @@
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class CompleteValueException : QueryExecutionException
 {
-    public class CompleteValueException : QueryExecutionException
+    public CompleteValueException(string message, NodePath path, params INode[] nodes) : base(message, path,
+        nodes)
     {
-        public CompleteValueException(string message, NodePath path, params INode[] nodes) : base(message, path,
-            nodes)
-        {
-        }
+    }
 
-        public CompleteValueException(string message, Exception innerException, NodePath path, params INode[] nodes) :
-            base(message, innerException, path, nodes)
-        {
-        }
+    public CompleteValueException(string message, Exception innerException, NodePath path, params INode[] nodes) :
+        base(message, innerException, path, nodes)
+    {
+    }
 
-        public CompleteValueException(string message, Exception innerException, NodePath path,
-            IReadOnlyDictionary<string, object> extensions, params INode[] nodes) : base(message, innerException,
-            path, extensions, nodes)
-        {
-        }
+    public CompleteValueException(string message, Exception innerException, NodePath path,
+        IReadOnlyDictionary<string, object> extensions, params INode[] nodes) : base(message, innerException,
+        path, extensions, nodes)
+    {
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/CompleteValueResult.cs b/src/graphql/ValueResolution/CompleteValueResult.cs
index 1abba5214..2ec4c3fd9 100644
--- a/src/graphql/ValueResolution/CompleteValueResult.cs
+++ b/src/graphql/ValueResolution/CompleteValueResult.cs
@@ -9,233 +9,230 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class CompleteValueResult : IResolverResult
 {
-    public class CompleteValueResult : IResolverResult
+    public CompleteValueResult(object? value, TypeDefinition actualType)
     {
-        private readonly object? _value;
-
-        public CompleteValueResult(object? value, TypeDefinition actualType)
-        {
-            _value = value;
-            IsTypeOf = (_,_) => actualType;
-        }
-
-        public CompleteValueResult(IEnumerable? value, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
-        {
-            _value = value;
-            IsTypeOf = isTypeOf;
-        }
+        Value = value;
+        IsTypeOf = (_, _) => actualType;
+    }
 
-        public CompleteValueResult(object? value)
-        {
-            _value = value;
-            IsTypeOf = (_, _) =>
-                throw new InvalidOperationException("Abstract type value was resolved without actual type or isTypeOf being provided.");
-        }
+    public CompleteValueResult(IEnumerable? value, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
+    {
+        Value = value;
+        IsTypeOf = isTypeOf;
+    }
 
-        public Func<IResolverContext, object?, TypeDefinition> IsTypeOf { get; }
+    public CompleteValueResult(object? value)
+    {
+        Value = value;
+        IsTypeOf = (_, _) =>
+            throw new InvalidOperationException(
+                "Abstract type value was resolved without actual type or isTypeOf being provided.");
+    }
 
-        public object? Value => _value;
+    public Func<IResolverContext, object?, TypeDefinition> IsTypeOf { get; }
 
-        public ValueTask<object?> CompleteValueAsync(
-            IResolverContext context)
-        {
-            return CompleteValueAsync(_value, context.Field.Type, context.Path, context);
-        }
+    public object? Value { get; }
 
-        private ValueTask<object?> CompleteValueAsync(
-            object? value,
-            TypeBase fieldType,
-            NodePath path,
-            IResolverContext context)
-        {
-            if (value is IResolverResult)
-            {
-                throw new CompleteValueException($"Cannot complete value for field '{Printer.Print(context.Field)}'. Resolving {nameof(IResolverResult)} value is not supported.",
-                    path,
-                    context.Selection);
-            }
+    public ValueTask<object?> CompleteValueAsync(
+        IResolverContext context)
+    {
+        return CompleteValueAsync(Value, context.Field.Type, context.Path, context);
+    }
 
-            if (fieldType is NonNullType NonNullType)
-                return CompleteNonNullTypeValueAsync(value, NonNullType, path, context);
+    private ValueTask<object?> CompleteValueAsync(
+        object? value,
+        TypeBase fieldType,
+        NodePath path,
+        IResolverContext context)
+    {
+        if (value is IResolverResult)
+            throw new CompleteValueException(
+                $"Cannot complete value for field '{Printer.Print(context.Field)}'. Resolving {nameof(IResolverResult)} value is not supported.",
+                path,
+                context.Selection);
 
-            if (value == null)
-                return default;
+        if (fieldType is NonNullType NonNullType)
+            return CompleteNonNullTypeValueAsync(value, NonNullType, path, context);
 
-            if (fieldType is ListType list)
-                return CompleteListValueAsync(value, list, path, context);
+        if (value == null)
+            return default;
 
-            if (fieldType is not NamedType namedType)
-                throw new InvalidOperationException("FieldType is not NamedType");
+        if (fieldType is ListType list)
+            return CompleteListValueAsync(value, list, path, context);
 
-            var typeDefinition = context.ExecutionContext.Schema.GetRequiredNamedType<TypeDefinition>(namedType.Name);
-            return  typeDefinition switch
-            {
-                ScalarDefinition scalarType => CompleteScalarType(value, scalarType, context),
-                EnumDefinition enumType => CompleteEnumType(value, enumType, context),
-                ObjectDefinition objectDefinition => CompleteObjectValueAsync(value, objectDefinition, path, context),
-
-                InterfaceDefinition interfaceType => CompleteInterfaceValueAsync(value, interfaceType, path, context),
-                UnionDefinition unionDefinition => CompleteUnionValueAsync(value, unionDefinition, path, context),
-                _ => throw new CompleteValueException(
-                    $"Cannot complete value for field {context.FieldName}. Cannot complete value of type {Printer.Print(fieldType)}.",
-                    path,
-                    context.Selection)
-            };
-        }
+        if (fieldType is not NamedType namedType)
+            throw new InvalidOperationException("FieldType is not NamedType");
 
-        private ValueTask<object?> CompleteEnumType(object? value, EnumDefinition enumType, IResolverContext context)
+        var typeDefinition = context.ExecutionContext.Schema.GetRequiredNamedType<TypeDefinition>(namedType.Name);
+        return typeDefinition switch
         {
-            //todo: use similar pattern to scalars
-            return new ValueTask<object?>(new EnumConverter(enumType).Serialize(value));
-        }
+            ScalarDefinition scalarType => CompleteScalarType(value, scalarType, context),
+            EnumDefinition enumType => CompleteEnumType(value, enumType, context),
+            ObjectDefinition objectDefinition => CompleteObjectValueAsync(value, objectDefinition, path, context),
+
+            InterfaceDefinition interfaceType => CompleteInterfaceValueAsync(value, interfaceType, path, context),
+            UnionDefinition unionDefinition => CompleteUnionValueAsync(value, unionDefinition, path, context),
+            _ => throw new CompleteValueException(
+                $"Cannot complete value for field {context.FieldName}. Cannot complete value of type {Printer.Print(fieldType)}.",
+                path,
+                context.Selection)
+        };
+    }
 
-        private ValueTask<object?> CompleteScalarType(object? value, ScalarDefinition scalarType, IResolverContext context)
-        {
-            var converter = context.ExecutionContext.Schema.GetRequiredValueConverter(scalarType.Name);
-            return new ValueTask<object?>(converter.Serialize(value));
-        }
+    private ValueTask<object?> CompleteEnumType(object? value, EnumDefinition enumType, IResolverContext context)
+    {
+        //todo: use similar pattern to scalars
+        return new ValueTask<object?>(new EnumConverter(enumType).Serialize(value));
+    }
 
-        private async ValueTask<object?> CompleteUnionValueAsync(
-            object value,
-            UnionDefinition unionDefinition,
-            NodePath path,
-            IResolverContext context)
-        {
-            var actualType = IsTypeOf(context, value) as ObjectDefinition;
-
-            if (actualType == null)
-                throw new CompleteValueException(
-                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
-                    "ActualType is required for union values.",
-                    path,
-                    context.Selection);
-
-            if (!unionDefinition.HasMember(actualType.Name))
-                throw new CompleteValueException(
-                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
-                    $"ActualType '{actualType.Name}' is not possible for '{unionDefinition.Name}'",
-                    path,
-                    context.Selection);
-
-            var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
-            var data = await SelectionSets.ExecuteSelectionSetAsync(
-                context.ExecutionContext,
-                subSelectionSet,
-                actualType,
-                value,
-                path).ConfigureAwait(false);
-
-            return data;
-        }
+    private ValueTask<object?> CompleteScalarType(object? value, ScalarDefinition scalarType, IResolverContext context)
+    {
+        var converter = context.ExecutionContext.Schema.GetRequiredValueConverter(scalarType.Name);
+        return new ValueTask<object?>(converter.Serialize(value));
+    }
 
-        private async ValueTask<object?> CompleteInterfaceValueAsync(
-            object value,
-            InterfaceDefinition interfaceType,
-            NodePath path,
-            IResolverContext context)
-        {
-            var actualType = IsTypeOf(context, value) as ObjectDefinition;
-
-            if (actualType == null)
-                throw new CompleteValueException(
-                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
-                    "ActualType is required for interface values.",
-                    path,
-                    context.Selection);
-
-            if (!actualType.HasInterface(interfaceType.Name))
-                throw new CompleteValueException(
-                    $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
-                    $"ActualType '{actualType.Name}' does not implement interface '{interfaceType.Name}'",
-                    path,
-                    context.Selection);
-
-            var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
-            var data = await SelectionSets.ExecuteSelectionSetAsync(
-                context.ExecutionContext,
-                subSelectionSet,
-                actualType,
-                value,
-                path);
-
-            return data;
-        }
+    private async ValueTask<object?> CompleteUnionValueAsync(
+        object value,
+        UnionDefinition unionDefinition,
+        NodePath path,
+        IResolverContext context)
+    {
+        var actualType = IsTypeOf(context, value) as ObjectDefinition;
+
+        if (actualType == null)
+            throw new CompleteValueException(
+                $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                "ActualType is required for union values.",
+                path,
+                context.Selection);
+
+        if (!unionDefinition.HasMember(actualType.Name))
+            throw new CompleteValueException(
+                $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                $"ActualType '{actualType.Name}' is not possible for '{unionDefinition.Name}'",
+                path,
+                context.Selection);
+
+        var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
+        var data = await SelectionSets.ExecuteSelectionSetAsync(
+            context.ExecutionContext,
+            subSelectionSet,
+            actualType,
+            value,
+            path).ConfigureAwait(false);
+
+        return data;
+    }
 
-        private static async ValueTask<object?> CompleteObjectValueAsync(
-            object value,
-            ObjectDefinition objectDefinition,
-            NodePath path,
-            IResolverContext context)
-        {
-            var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
-            var data = await SelectionSets.ExecuteSelectionSetAsync(
-                context.ExecutionContext,
-                subSelectionSet,
-                objectDefinition,
-                value,
-                path);
-
-            return data;
-        }
+    private async ValueTask<object?> CompleteInterfaceValueAsync(
+        object value,
+        InterfaceDefinition interfaceType,
+        NodePath path,
+        IResolverContext context)
+    {
+        var actualType = IsTypeOf(context, value) as ObjectDefinition;
+
+        if (actualType == null)
+            throw new CompleteValueException(
+                $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                "ActualType is required for interface values.",
+                path,
+                context.Selection);
+
+        if (!actualType.HasInterface(interfaceType.Name))
+            throw new CompleteValueException(
+                $"Cannot complete value for field '{Printer.Print(context.Field)}'. " +
+                $"ActualType '{actualType.Name}' does not implement interface '{interfaceType.Name}'",
+                path,
+                context.Selection);
+
+        var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
+        var data = await SelectionSets.ExecuteSelectionSetAsync(
+            context.ExecutionContext,
+            subSelectionSet,
+            actualType,
+            value,
+            path);
+
+        return data;
+    }
 
-        private async ValueTask<object?> CompleteNonNullTypeValueAsync(
-            object? value,
-            NonNullType NonNullType,
-            NodePath path,
-            IResolverContext context)
-        {
-            var innerType = NonNullType.OfType;
-            var completedResult = await CompleteValueAsync(value, innerType, path, context);
+    private static async ValueTask<object?> CompleteObjectValueAsync(
+        object value,
+        ObjectDefinition objectDefinition,
+        NodePath path,
+        IResolverContext context)
+    {
+        var subSelectionSet = SelectionSets.MergeSelectionSets(context.Fields);
+        var data = await SelectionSets.ExecuteSelectionSetAsync(
+            context.ExecutionContext,
+            subSelectionSet,
+            objectDefinition,
+            value,
+            path);
+
+        return data;
+    }
 
-            if (completedResult == null)
-                throw new NullValueForNonNullTypeException(
-                    context.ObjectDefinition.Name,
-                    context.FieldName,
-                    path,
-                    context.Selection);
+    private async ValueTask<object?> CompleteNonNullTypeValueAsync(
+        object? value,
+        NonNullType NonNullType,
+        NodePath path,
+        IResolverContext context)
+    {
+        var innerType = NonNullType.OfType;
+        var completedResult = await CompleteValueAsync(value, innerType, path, context);
 
-            return completedResult;
-        }
+        if (completedResult == null)
+            throw new NullValueForNonNullTypeException(
+                context.ObjectDefinition.Name,
+                context.FieldName,
+                path,
+                context.Selection);
+
+        return completedResult;
+    }
 
-        private async ValueTask<object?> CompleteListValueAsync(
-            object value,
-            ListType list,
-            NodePath path,
-            IResolverContext context)
+    private async ValueTask<object?> CompleteListValueAsync(
+        object value,
+        ListType list,
+        NodePath path,
+        IResolverContext context)
+    {
+        if (value is not IEnumerable values)
+            throw new CompleteValueException(
+                $"Cannot complete value for list field '{context.FieldName}':'{list}'. " +
+                "Resolved value is not a collection",
+                path,
+                context.Selection);
+
+        var innerType = list.OfType;
+        var result = new List<object?>();
+        var i = 0;
+        foreach (var resultItem in values)
         {
-            if (value is not IEnumerable values)
-                throw new CompleteValueException(
-                    $"Cannot complete value for list field '{context.FieldName}':'{list}'. " +
-                    "Resolved value is not a collection",
-                    path,
-                    context.Selection);
-
-            var innerType = list.OfType;
-            var result = new List<object?>();
-            var i = 0;
-            foreach (var resultItem in values)
+            var itemPath = path.Fork().Append(i++);
+
+            try
             {
-                var itemPath = path.Fork().Append(i++);
-
-                try
-                {
-                    var completedResultItem = await
-                        CompleteValueAsync(resultItem, innerType, itemPath, context);
-
-                    result.Add(completedResultItem);
-                }
-                catch (Exception e)
-                {
-                    if (innerType is NonNullType) throw;
-
-                    context.ExecutionContext.AddError(e);
-                    result.Add(null);
-                }
+                var completedResultItem = await
+                    CompleteValueAsync(resultItem, innerType, itemPath, context);
+
+                result.Add(completedResultItem);
             }
+            catch (Exception e)
+            {
+                if (innerType is NonNullType) throw;
 
-            return result;
+                context.ExecutionContext.AddError(e);
+                result.Add(null);
+            }
         }
+
+        return result;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/IReadFromObjectDictionary.cs b/src/graphql/ValueResolution/IReadFromObjectDictionary.cs
index 1af762b0a..fd1fd0812 100644
--- a/src/graphql/ValueResolution/IReadFromObjectDictionary.cs
+++ b/src/graphql/ValueResolution/IReadFromObjectDictionary.cs
@@ -1,9 +1,8 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public interface IReadFromObjectDictionary
 {
-    public interface IReadFromObjectDictionary
-    {
-        void Read(IReadOnlyDictionary<string, object> source);
-    }
+    void Read(IReadOnlyDictionary<string, object> source);
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/IResolverContext.cs b/src/graphql/ValueResolution/IResolverContext.cs
index f815cdee3..00747e904 100644
--- a/src/graphql/ValueResolution/IResolverContext.cs
+++ b/src/graphql/ValueResolution/IResolverContext.cs
@@ -1,34 +1,31 @@
 using System.Collections.Generic;
-
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public interface IResolverContext
-    {
-        ObjectDefinition ObjectDefinition { get; }
+namespace Tanka.GraphQL.ValueResolution;
 
-        object? ObjectValue { get; }
+public interface IResolverContext
+{
+    IReadOnlyDictionary<string, object?> Arguments { get; }
 
-        FieldDefinition Field { get; }
+    IExecutorContext ExecutionContext { get; }
 
-        FieldSelection Selection { get; }
+    FieldDefinition Field { get; }
 
-        IReadOnlyDictionary<string, object?> Arguments { get; }
+    string FieldName { get; }
 
-        NodePath Path { get; }
+    IReadOnlyCollection<FieldSelection> Fields { get; }
 
-        IExecutorContext ExecutionContext { get; }
+    IDictionary<object, object> Items { get; }
+    ObjectDefinition ObjectDefinition { get; }
 
-        string FieldName { get; }
+    object? ObjectValue { get; }
 
-        IDictionary<object, object> Items { get; }
+    NodePath Path { get; }
 
-        IReadOnlyCollection<FieldSelection> Fields { get; }
+    ISchema Schema => ExecutionContext.Schema;
 
-        ISchema Schema => ExecutionContext.Schema;
-    }
+    FieldSelection Selection { get; }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/IResolverResult.cs b/src/graphql/ValueResolution/IResolverResult.cs
index 65841c1ee..6e7de5ab9 100644
--- a/src/graphql/ValueResolution/IResolverResult.cs
+++ b/src/graphql/ValueResolution/IResolverResult.cs
@@ -1,12 +1,11 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public interface IResolverResult
 {
-    public interface IResolverResult
-    {
-        object? Value { get; }
+    object? Value { get; }
 
-        ValueTask<object?> CompleteValueAsync(
-            IResolverContext context);
-    }
+    ValueTask<object?> CompleteValueAsync(
+        IResolverContext context);
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ISubscriberResult.cs b/src/graphql/ValueResolution/ISubscriberResult.cs
index 28597af7d..acf6ed81f 100644
--- a/src/graphql/ValueResolution/ISubscriberResult.cs
+++ b/src/graphql/ValueResolution/ISubscriberResult.cs
@@ -3,14 +3,12 @@
 using System.Threading.Channels;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public interface ISubscriberResult
-    {
-        ValueTask WriteAsync<T>(T item, CancellationToken cancellationToken);
+namespace Tanka.GraphQL.ValueResolution;
 
-        ChannelReader<object> Reader { get; }
+public interface ISubscriberResult
+{
+    ChannelReader<object> Reader { get; }
+    ValueTask WriteAsync<T>(T item, CancellationToken cancellationToken);
 
-        bool TryComplete(Exception error = null);
-    }
+    bool TryComplete(Exception error = null);
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/NullValueForNonNullException.cs b/src/graphql/ValueResolution/NullValueForNonNullException.cs
index 8289cba9f..bb2ab61b5 100644
--- a/src/graphql/ValueResolution/NullValueForNonNullException.cs
+++ b/src/graphql/ValueResolution/NullValueForNonNullException.cs
@@ -1,18 +1,16 @@
-
-using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class NullValueForNonNullTypeException : CompleteValueException
 {
-    public class NullValueForNonNullTypeException : CompleteValueException
+    public NullValueForNonNullTypeException(
+        string type,
+        string field,
+        NodePath path,
+        params INode[] nodes)
+        : base($"Cannot return null for non-nullable field '{type}.{field}'.", path, nodes)
     {
-        public NullValueForNonNullTypeException(
-            string type,
-            string field,
-            NodePath path,
-            params INode[] nodes)
-            : base($"Cannot return null for non-nullable field '{type}.{field}'.", path, nodes)
-        {
-        }
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/Resolve.cs b/src/graphql/ValueResolution/Resolve.cs
index a24c35af4..93d6a3eae 100644
--- a/src/graphql/ValueResolution/Resolve.cs
+++ b/src/graphql/ValueResolution/Resolve.cs
@@ -5,76 +5,75 @@
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public static class Resolve
 {
-    public static class Resolve
+    public static IResolverResult As(object? result)
     {
-        public static IResolverResult As(object? result)
-        {
-            return new CompleteValueResult(result);
-        }
+        return new CompleteValueResult(result);
+    }
 
-        public static IResolverResult As(ObjectDefinition type, object? result)
-        {
-            return new CompleteValueResult(result, type);
-        }
+    public static IResolverResult As(ObjectDefinition type, object? result)
+    {
+        return new CompleteValueResult(result, type);
+    }
 
-        public static IResolverResult As(IEnumerable? result)
-        {
-            return new CompleteValueResult(result);
-        }
+    public static IResolverResult As(IEnumerable? result)
+    {
+        return new CompleteValueResult(result);
+    }
 
-        public static IResolverResult As(IEnumerable? result, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
-        {
-            return new CompleteValueResult(result, isTypeOf);
-        }
+    public static IResolverResult As(IEnumerable? result, Func<IResolverContext, object?, TypeDefinition> isTypeOf)
+    {
+        return new CompleteValueResult(result, isTypeOf);
+    }
 
-        public static Resolver PropertyOf<T>(Func<T, object?> getValue)
+    public static Resolver PropertyOf<T>(Func<T, object?> getValue)
+    {
+        return context =>
         {
-            return context =>
-            {
-                var source = context.ObjectValue is T objectValue ? objectValue : default;
+            var source = context.ObjectValue is T objectValue ? objectValue : default;
 
-                if (source == null) return ResolveSync.As(null);
+            if (source == null) return ResolveSync.As(null);
 
-                var value = getValue(source);
-                return ResolveSync.As(value);
-            };
-        }
+            var value = getValue(source);
+            return ResolveSync.As(value);
+        };
+    }
 
-        public static Resolver PropertyOf<T>(Func<T, IResolverContext, object?> getValue)
+    public static Resolver PropertyOf<T>(Func<T, IResolverContext, object?> getValue)
+    {
+        return context =>
         {
-            return context =>
-            {
-                var source = context.ObjectValue is T objectValue ? objectValue : default;
+            var source = context.ObjectValue is T objectValue ? objectValue : default;
 
-                if (source == null) return ResolveSync.As(null);
+            if (source == null) return ResolveSync.As(null);
 
-                var value = getValue(source, context);
-                return ResolveSync.As(value);
-            };
-        }
+            var value = getValue(source, context);
+            return ResolveSync.As(value);
+        };
+    }
 
-        public static Resolver PropertyOf<T>(Func<T, IEnumerable<object?>?> getValue)
+    public static Resolver PropertyOf<T>(Func<T, IEnumerable<object?>?> getValue)
+    {
+        return context =>
         {
-            return context =>
-            {
-                var source = context.ObjectValue is T objectValue ? objectValue : default;
+            var source = context.ObjectValue is T objectValue ? objectValue : default;
 
-                if (source == null) return ResolveSync.As(null);
+            if (source == null) return ResolveSync.As(null);
 
-                var values = getValue(source);
+            var values = getValue(source);
 
-                if (values == null)
-                    return ResolveSync.As(null);
+            if (values == null)
+                return ResolveSync.As(null);
 
-                return ResolveSync.As(values);
-            };
-        }
+            return ResolveSync.As(values);
+        };
+    }
 
-        public static ISubscriberResult Subscribe<T>(EventChannel<T> eventChannel, CancellationToken unsubscribe)
-        {
-            return eventChannel.Subscribe(unsubscribe);
-        }
+    public static ISubscriberResult Subscribe<T>(EventChannel<T> eventChannel, CancellationToken unsubscribe)
+    {
+        return eventChannel.Subscribe(unsubscribe);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolveSync.cs b/src/graphql/ValueResolution/ResolveSync.cs
index 0de2b472b..f24f24695 100644
--- a/src/graphql/ValueResolution/ResolveSync.cs
+++ b/src/graphql/ValueResolution/ResolveSync.cs
@@ -4,34 +4,33 @@
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public static class ResolveSync
 {
-    public static class ResolveSync
+    public static ValueTask<ISubscriberResult> Subscribe<T>(EventChannel<T> eventChannel,
+        CancellationToken unsubscribe)
     {
-        public static ValueTask<ISubscriberResult> Subscribe<T>(EventChannel<T> eventChannel,
-            CancellationToken unsubscribe)
-        {
-            return new ValueTask<ISubscriberResult>(eventChannel.Subscribe(unsubscribe));
-        }
+        return new ValueTask<ISubscriberResult>(eventChannel.Subscribe(unsubscribe));
+    }
 
-        public static ValueTask<IResolverResult> As(object? result)
-        {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
-        }
+    public static ValueTask<IResolverResult> As(object? result)
+    {
+        return new ValueTask<IResolverResult>(new CompleteValueResult(result));
+    }
 
-        public static ValueTask<IResolverResult> As(string? result)
-        {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
-        }
+    public static ValueTask<IResolverResult> As(string? result)
+    {
+        return new ValueTask<IResolverResult>(new CompleteValueResult(result));
+    }
 
-        public static ValueTask<IResolverResult> As(ObjectDefinition type, object? result)
-        {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result, type));
-        }
+    public static ValueTask<IResolverResult> As(ObjectDefinition type, object? result)
+    {
+        return new ValueTask<IResolverResult>(new CompleteValueResult(result, type));
+    }
 
-        public static ValueTask<IResolverResult> As(IEnumerable? result)
-        {
-            return new ValueTask<IResolverResult>(new CompleteValueResult(result));
-        }
+    public static ValueTask<IResolverResult> As(IEnumerable? result)
+    {
+        return new ValueTask<IResolverResult>(new CompleteValueResult(result));
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/Resolver.cs b/src/graphql/ValueResolution/Resolver.cs
index cafa6c4ee..ede30d033 100644
--- a/src/graphql/ValueResolution/Resolver.cs
+++ b/src/graphql/ValueResolution/Resolver.cs
@@ -1,6 +1,5 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public delegate ValueTask<IResolverResult> Resolver(IResolverContext context);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.ValueResolution;
+
+public delegate ValueTask<IResolverResult> Resolver(IResolverContext context);
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolverBuilder.cs b/src/graphql/ValueResolution/ResolverBuilder.cs
index 8d97eabd2..5818ba739 100644
--- a/src/graphql/ValueResolution/ResolverBuilder.cs
+++ b/src/graphql/ValueResolution/ResolverBuilder.cs
@@ -1,58 +1,58 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class ResolverBuilder
 {
-    public class ResolverBuilder
+    private readonly List<ResolverMiddleware> _middlewares = new();
+
+    private Resolver? _root;
+
+    public ResolverBuilder(Resolver root)
     {
-        private readonly List<ResolverMiddleware> _middlewares = new();
+        Run(root);
+    }
 
-        private Resolver? _root;
+    public ResolverBuilder()
+    {
+    }
 
-        public ResolverBuilder(Resolver root)
-        {
-            Run(root);
-        }
+    /// <summary>
+    ///     Add middleware to be run before the root resolver
+    /// </summary>
+    /// <param name="middleware"></param>
+    /// <returns></returns>
+    public ResolverBuilder Use(ResolverMiddleware middleware)
+    {
+        _middlewares.Insert(0, middleware);
+        return this;
+    }
 
-        public ResolverBuilder()
-        {
-        }
+    /// <summary>
+    ///     Set root resolver to be run at the end of the resolver chain
+    /// </summary>
+    /// <param name="resolver"></param>
+    /// <returns></returns>
+    public ResolverBuilder Run(Resolver resolver)
+    {
+        _root = resolver;
+        return this;
+    }
 
-        /// <summary>
-        ///     Add middleware to be run before the root resolver
-        /// </summary>
-        /// <param name="middleware"></param>
-        /// <returns></returns>
-        public ResolverBuilder Use(ResolverMiddleware middleware)
-        {
-            _middlewares.Insert(0, middleware);
-            return this;
-        }
+    public Resolver Build()
+    {
+        if (_root is null)
+            throw new InvalidOperationException(
+                $"Resolver chain is missing ending. Use {nameof(Run)} to end the chain.");
 
-        /// <summary>
-        ///     Set root resolver to be run at the end of the resolver chain
-        /// </summary>
-        /// <param name="resolver"></param>
-        /// <returns></returns>
-        public ResolverBuilder Run(Resolver resolver)
+        var resolver = _root;
+        foreach (var middleware in _middlewares)
         {
-            _root = resolver;
-            return this;
+            var resolver1 = resolver;
+            resolver = context => middleware(context, resolver1);
         }
 
-        public Resolver Build()
-        {
-            if (_root is null)
-                throw new InvalidOperationException($"Resolver chain is missing ending. Use {nameof(Run)} to end the chain.");
-
-            var resolver = _root;
-            foreach (var middleware in _middlewares)
-            {
-                var resolver1 = resolver;
-                resolver = context => middleware(context, resolver1);
-            }
-
-            return resolver;
-        }
+        return resolver;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolverContext.cs b/src/graphql/ValueResolution/ResolverContext.cs
index 67878b2cc..24990099e 100644
--- a/src/graphql/ValueResolution/ResolverContext.cs
+++ b/src/graphql/ValueResolution/ResolverContext.cs
@@ -1,55 +1,53 @@
 using System;
 using System.Collections.Generic;
-
 using Tanka.GraphQL.Execution;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class ResolverContext : IResolverContext
 {
-    public class ResolverContext : IResolverContext
+    public ResolverContext(
+        ObjectDefinition objectDefinition,
+        object? objectValue,
+        FieldDefinition field,
+        FieldSelection selection,
+        IReadOnlyCollection<FieldSelection> fields,
+        IReadOnlyDictionary<string, object?> arguments,
+        NodePath path,
+        IExecutorContext executionContext)
     {
-        public ResolverContext(
-            ObjectDefinition objectDefinition,
-            object? objectValue,
-            FieldDefinition field,
-            FieldSelection selection,
-            IReadOnlyCollection<FieldSelection> fields,
-            IReadOnlyDictionary<string, object?> arguments,
-            NodePath path,
-            IExecutorContext executionContext)
-        {
-            ObjectDefinition = objectDefinition ?? throw new ArgumentNullException(nameof(objectDefinition));
-            ObjectValue = objectValue;
-            Field = field ?? throw new ArgumentNullException(nameof(field));
-            Selection = selection ?? throw new ArgumentNullException(nameof(selection));
-            Fields = fields;
-            Arguments = arguments ?? throw new ArgumentNullException(nameof(arguments));
-            Path = path ?? throw new ArgumentNullException(nameof(path));
-            ExecutionContext = executionContext;
-        }
+        ObjectDefinition = objectDefinition ?? throw new ArgumentNullException(nameof(objectDefinition));
+        ObjectValue = objectValue;
+        Field = field ?? throw new ArgumentNullException(nameof(field));
+        Selection = selection ?? throw new ArgumentNullException(nameof(selection));
+        Fields = fields;
+        Arguments = arguments ?? throw new ArgumentNullException(nameof(arguments));
+        Path = path ?? throw new ArgumentNullException(nameof(path));
+        ExecutionContext = executionContext;
+    }
 
-        public IDictionary<object, object> Items { get; } = new Dictionary<object, object>();
+    public IDictionary<object, object> Items { get; } = new Dictionary<object, object>();
 
-        public ISchema Schema => ExecutionContext.Schema;
+    public ISchema Schema => ExecutionContext.Schema;
 
-        public ObjectDefinition ObjectDefinition { get; }
+    public ObjectDefinition ObjectDefinition { get; }
 
-        public object? ObjectValue { get; }
+    public object? ObjectValue { get; }
 
-        public FieldDefinition Field { get; }
+    public FieldDefinition Field { get; }
 
-        public FieldSelection Selection { get; }
-        
-        public IReadOnlyCollection<FieldSelection> Fields { get; }
+    public FieldSelection Selection { get; }
 
-        public IReadOnlyDictionary<string, object?> Arguments { get; }
+    public IReadOnlyCollection<FieldSelection> Fields { get; }
 
-        public NodePath Path { get; }
+    public IReadOnlyDictionary<string, object?> Arguments { get; }
 
-        public IExecutorContext ExecutionContext { get; }
+    public NodePath Path { get; }
 
-        public string FieldName => Selection.Name;
-    }
+    public IExecutorContext ExecutionContext { get; }
+
+    public string FieldName => Selection.Name;
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolverContextExtensions.cs b/src/graphql/ValueResolution/ResolverContextExtensions.cs
index b929a29b5..acc4bc03e 100644
--- a/src/graphql/ValueResolution/ResolverContextExtensions.cs
+++ b/src/graphql/ValueResolution/ResolverContextExtensions.cs
@@ -1,76 +1,75 @@
 using System;
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public static class ResolverContextExtensions
 {
-    public static class ResolverContextExtensions
+    public static T? GetArgument<T>(this IResolverContext context, string name)
     {
-        public static T? GetArgument<T>(this IResolverContext context, string name)
-        {
-            if (!context.Arguments.TryGetValue(name, out var arg))
-                throw new ArgumentOutOfRangeException(nameof(name), name,
-                    $"Field '{context.FieldName}' does not contain argument with name '{name}''");
+        if (!context.Arguments.TryGetValue(name, out var arg))
+            throw new ArgumentOutOfRangeException(nameof(name), name,
+                $"Field '{context.FieldName}' does not contain argument with name '{name}''");
 
-            return (T?) arg;
-        }
+        return (T?)arg;
+    }
 
-        
-        /// <summary>
-        ///     Read InputObject argument dictionary as object
-        /// </summary>
-        /// <remarks>
-        ///     Experimental. This might go away anytime and be replaced with something better.
-        /// </remarks>
-        /// <typeparam name="T"></typeparam>
-        /// <param name="name"></param>
-        /// <returns></returns>
-        public static T? GetObjectArgument<T>(this IResolverContext context, string name)
-            where T : IReadFromObjectDictionary, new()
-        {
-            var arg = context.GetArgument<IReadOnlyDictionary<string, object>>(name);
 
-            if (arg is null)
-                return default;
+    /// <summary>
+    ///     Read InputObject argument dictionary as object
+    /// </summary>
+    /// <remarks>
+    ///     Experimental. This might go away anytime and be replaced with something better.
+    /// </remarks>
+    /// <typeparam name="T"></typeparam>
+    /// <param name="name"></param>
+    /// <returns></returns>
+    public static T? GetObjectArgument<T>(this IResolverContext context, string name)
+        where T : IReadFromObjectDictionary, new()
+    {
+        var arg = context.GetArgument<IReadOnlyDictionary<string, object>>(name);
 
-            var value = new T();
-            value.Read(arg);
-            return value;
-        }
+        if (arg is null)
+            return default;
 
-        /// <summary>
-        ///     Read InputObject argument dictionary as object
-        /// </summary>
-        /// <remarks>
-        ///     Experimental. This might go away anytime and be replaced with something better.
-        /// </remarks>
-        /// <typeparam name="T"></typeparam>
-        /// <param name="name"></param>
-        /// <returns></returns>
-        public static IEnumerable<T?> GetObjectArgumentList<T>(this IResolverContext context, string name)
-            where T : IReadFromObjectDictionary, new()
-        {
-            var arg = context.GetArgument<IEnumerable<IReadOnlyDictionary<string, object>>>(name);
+        var value = new T();
+        value.Read(arg);
+        return value;
+    }
 
-            if (arg is null)
-                yield break;
+    /// <summary>
+    ///     Read InputObject argument dictionary as object
+    /// </summary>
+    /// <remarks>
+    ///     Experimental. This might go away anytime and be replaced with something better.
+    /// </remarks>
+    /// <typeparam name="T"></typeparam>
+    /// <param name="name"></param>
+    /// <returns></returns>
+    public static IEnumerable<T?> GetObjectArgumentList<T>(this IResolverContext context, string name)
+        where T : IReadFromObjectDictionary, new()
+    {
+        var arg = context.GetArgument<IEnumerable<IReadOnlyDictionary<string, object>>>(name);
 
-            foreach (var item in arg)
-            {
-                if (item is null)
-                {
-                    yield return default(T);
-                    continue;
-                }
+        if (arg is null)
+            yield break;
 
-                var value = new T();
-                value.Read(item);
-                yield return value;
+        foreach (var item in arg)
+        {
+            if (item is null)
+            {
+                yield return default;
+                continue;
             }
-        }
 
-        public static T Extension<T>(this IResolverContext context) where T : IExtensionScope
-        {
-            return context.ExecutionContext.ExtensionsRunner.Extension<T>();
+            var value = new T();
+            value.Read(item);
+            yield return value;
         }
     }
+
+    public static T Extension<T>(this IResolverContext context) where T : IExtensionScope
+    {
+        return context.ExecutionContext.ExtensionsRunner.Extension<T>();
+    }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/ResolverMiddleware.cs b/src/graphql/ValueResolution/ResolverMiddleware.cs
index 12f7820de..a38835f94 100644
--- a/src/graphql/ValueResolution/ResolverMiddleware.cs
+++ b/src/graphql/ValueResolution/ResolverMiddleware.cs
@@ -1,6 +1,5 @@
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public delegate ValueTask<IResolverResult> ResolverMiddleware(IResolverContext context, Resolver next);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.ValueResolution;
+
+public delegate ValueTask<IResolverResult> ResolverMiddleware(IResolverContext context, Resolver next);
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/Subscriber.cs b/src/graphql/ValueResolution/Subscriber.cs
index 707e61818..6620cdb40 100644
--- a/src/graphql/ValueResolution/Subscriber.cs
+++ b/src/graphql/ValueResolution/Subscriber.cs
@@ -1,7 +1,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public delegate ValueTask<ISubscriberResult> Subscriber(IResolverContext context, CancellationToken unsubscribe);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.ValueResolution;
+
+public delegate ValueTask<ISubscriberResult> Subscriber(IResolverContext context, CancellationToken unsubscribe);
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/SubscriberBuilder.cs b/src/graphql/ValueResolution/SubscriberBuilder.cs
index 30aa666e9..19f5994cc 100644
--- a/src/graphql/ValueResolution/SubscriberBuilder.cs
+++ b/src/graphql/ValueResolution/SubscriberBuilder.cs
@@ -1,55 +1,53 @@
 using System.Collections.Generic;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class SubscriberBuilder
 {
-    public class SubscriberBuilder
-    {
-        private readonly List<SubscriberMiddleware> _middlewares
-            = new List<SubscriberMiddleware>();
+    private readonly List<SubscriberMiddleware> _middlewares = new();
 
-        private Subscriber _root;
+    private Subscriber _root;
 
-        public SubscriberBuilder(Subscriber root)
-        {
-            Run(root);
-        }
+    public SubscriberBuilder(Subscriber root)
+    {
+        Run(root);
+    }
 
-        public SubscriberBuilder()
-        {
-        }
+    public SubscriberBuilder()
+    {
+    }
 
-        /// <summary>
-        ///     Add middlware to be run before the root of the chain
-        /// </summary>
-        /// <param name="middleware"></param>
-        /// <returns></returns>
-        public SubscriberBuilder Use(SubscriberMiddleware middleware)
-        {
-            _middlewares.Insert(0, middleware);
-            return this;
-        }
+    /// <summary>
+    ///     Add middlware to be run before the root of the chain
+    /// </summary>
+    /// <param name="middleware"></param>
+    /// <returns></returns>
+    public SubscriberBuilder Use(SubscriberMiddleware middleware)
+    {
+        _middlewares.Insert(0, middleware);
+        return this;
+    }
 
-        /// <summary>
-        ///     Set root subscriber to be run at the end of the subscriber chain
-        /// </summary>
-        /// <param name="resolver"></param>
-        /// <returns></returns>
-        public SubscriberBuilder Run(Subscriber subscriber)
-        {
-            _root = subscriber;
-            return this;
-        }
+    /// <summary>
+    ///     Set root subscriber to be run at the end of the subscriber chain
+    /// </summary>
+    /// <param name="resolver"></param>
+    /// <returns></returns>
+    public SubscriberBuilder Run(Subscriber subscriber)
+    {
+        _root = subscriber;
+        return this;
+    }
 
-        public Subscriber Build()
+    public Subscriber Build()
+    {
+        var subscriber = _root;
+        foreach (var middleware in _middlewares)
         {
-            Subscriber subscriber = _root;
-            foreach (var middleware in _middlewares)
-            {
-                var subscriber1 = subscriber;
-                subscriber = (context, unsubscribe) => middleware(context, unsubscribe, subscriber1);
-            }
-
-            return subscriber;
+            var subscriber1 = subscriber;
+            subscriber = (context, unsubscribe) => middleware(context, unsubscribe, subscriber1);
         }
+
+        return subscriber;
     }
 }
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/SubscriberMiddleware.cs b/src/graphql/ValueResolution/SubscriberMiddleware.cs
index 944d7e83c..7ab1b2f0d 100644
--- a/src/graphql/ValueResolution/SubscriberMiddleware.cs
+++ b/src/graphql/ValueResolution/SubscriberMiddleware.cs
@@ -1,7 +1,7 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
-{
-    public delegate ValueTask<ISubscriberResult> SubscriberMiddleware(IResolverContext context, CancellationToken unsubscribe, Subscriber next);
-}
\ No newline at end of file
+namespace Tanka.GraphQL.ValueResolution;
+
+public delegate ValueTask<ISubscriberResult> SubscriberMiddleware(IResolverContext context,
+    CancellationToken unsubscribe, Subscriber next);
\ No newline at end of file
diff --git a/src/graphql/ValueResolution/SubscriberResult.cs b/src/graphql/ValueResolution/SubscriberResult.cs
index 9840f9423..b2e119cc2 100644
--- a/src/graphql/ValueResolution/SubscriberResult.cs
+++ b/src/graphql/ValueResolution/SubscriberResult.cs
@@ -3,27 +3,26 @@
 using System.Threading.Channels;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.ValueResolution
+namespace Tanka.GraphQL.ValueResolution;
+
+public class SubscriberResult : ISubscriberResult
 {
-    public class SubscriberResult : ISubscriberResult
-    {
-        private readonly Channel<object> _channel;
+    private readonly Channel<object> _channel;
 
-        public SubscriberResult()
-        {
-            _channel = Channel.CreateUnbounded<object>();
-        }
+    public SubscriberResult()
+    {
+        _channel = Channel.CreateUnbounded<object>();
+    }
 
-        public ChannelReader<object> Reader => _channel.Reader;
+    public ChannelReader<object> Reader => _channel.Reader;
 
-        public bool TryComplete(Exception error = null)
-        {
-            return _channel.Writer.TryComplete(error);
-        }
+    public bool TryComplete(Exception error = null)
+    {
+        return _channel.Writer.TryComplete(error);
+    }
 
-        public ValueTask WriteAsync<T>(T item, CancellationToken cancellationToken = default)
-        {
-            return _channel.Writer.WriteAsync(item, cancellationToken);
-        }
+    public ValueTask WriteAsync<T>(T item, CancellationToken cancellationToken = default)
+    {
+        return _channel.Writer.WriteAsync(item, cancellationToken);
     }
 }
\ No newline at end of file
diff --git a/src/graphql/VariableException.cs b/src/graphql/VariableException.cs
index d7672e31d..1a5503245 100644
--- a/src/graphql/VariableException.cs
+++ b/src/graphql/VariableException.cs
@@ -1,18 +1,17 @@
 using System;
 using Tanka.GraphQL.Language.Nodes;
 
-namespace Tanka.GraphQL
+namespace Tanka.GraphQL;
+
+public class VariableException : Exception
 {
-    public class VariableException : Exception
+    public VariableException(string message, string variableName, INode variableType) : base(message)
     {
-        public VariableException(string message, string variableName, INode variableType) : base(message)
-        {
-            VariableName = variableName;
-            VariableType = variableType;
-        }
+        VariableName = variableName;
+        VariableType = variableType;
+    }
 
-        public string VariableName { get; set; }
+    public string VariableName { get; set; }
 
-        public INode VariableType { get; set; }
-    }
+    public INode VariableType { get; set; }
 }
\ No newline at end of file
diff --git a/tanka-graphql.sln b/tanka-graphql.sln
index f84ce9ed4..aef33c0ad 100644
--- a/tanka-graphql.sln
+++ b/tanka-graphql.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.28711.60
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.32126.317
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql", "src\graphql\graphql.csproj", "{EA7CCACB-0173-494F-AEE4-946908E2740E}"
 EndProject
@@ -42,18 +42,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.server.links", "src
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.server.links.tests", "tests\graphql.server.links.tests\graphql.server.links.tests.csproj", "{563B3005-79F0-4E41-94C6-E90F23A44973}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.generator.core", "src\graphql.generator.core\graphql.generator.core.csproj", "{A6D832B5-2DA1-4843-8390-AAD35E901B77}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.generator.tool", "src\graphql.generator.tool\graphql.generator.tool.csproj", "{6CF0A3C2-43D5-425B-A63E-04C632552127}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.generator.integration.tests", "tests\graphql.generator.integration.tests\graphql.generator.integration.tests.csproj", "{82E25484-752F-41BB-B54F-22AB5D89FC3D}"
-	ProjectSection(ProjectDependencies) = postProject
-		{21F2BB76-E9D1-463D-B866-0641830DF386} = {21F2BB76-E9D1-463D-B866-0641830DF386}
-		{6CF0A3C2-43D5-425B-A63E-04C632552127} = {6CF0A3C2-43D5-425B-A63E-04C632552127}
-	EndProjectSection
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.generator", "src\graphql.generator\graphql.generator.csproj", "{21F2BB76-E9D1-463D-B866-0641830DF386}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.language.tests", "tests\graphql.language.tests\graphql.language.tests.csproj", "{9C8ED4B3-E633-4435-9202-36FE3FFA991E}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "graphql.language", "src\graphql.language\graphql.language.csproj", "{BE7F1B1C-7455-43CB-8316-60B2BC7BF807}"
@@ -222,54 +210,6 @@ Global
 		{563B3005-79F0-4E41-94C6-E90F23A44973}.Release|x64.Build.0 = Release|Any CPU
 		{563B3005-79F0-4E41-94C6-E90F23A44973}.Release|x86.ActiveCfg = Release|Any CPU
 		{563B3005-79F0-4E41-94C6-E90F23A44973}.Release|x86.Build.0 = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|x64.Build.0 = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Debug|x86.Build.0 = Debug|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|Any CPU.Build.0 = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|x64.ActiveCfg = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|x64.Build.0 = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|x86.ActiveCfg = Release|Any CPU
-		{A6D832B5-2DA1-4843-8390-AAD35E901B77}.Release|x86.Build.0 = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|x64.Build.0 = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Debug|x86.Build.0 = Debug|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|Any CPU.Build.0 = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|x64.ActiveCfg = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|x64.Build.0 = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|x86.ActiveCfg = Release|Any CPU
-		{6CF0A3C2-43D5-425B-A63E-04C632552127}.Release|x86.Build.0 = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|x64.Build.0 = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Debug|x86.Build.0 = Debug|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|Any CPU.Build.0 = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|x64.ActiveCfg = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|x64.Build.0 = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|x86.ActiveCfg = Release|Any CPU
-		{82E25484-752F-41BB-B54F-22AB5D89FC3D}.Release|x86.Build.0 = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|x64.Build.0 = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Debug|x86.Build.0 = Debug|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|Any CPU.Build.0 = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|x64.ActiveCfg = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|x64.Build.0 = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|x86.ActiveCfg = Release|Any CPU
-		{21F2BB76-E9D1-463D-B866-0641830DF386}.Release|x86.Build.0 = Release|Any CPU
 		{9C8ED4B3-E633-4435-9202-36FE3FFA991E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{9C8ED4B3-E633-4435-9202-36FE3FFA991E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{9C8ED4B3-E633-4435-9202-36FE3FFA991E}.Debug|x64.ActiveCfg = Debug|Any CPU
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/ExecutionResultExtensions.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/ExecutionResultExtensions.cs
index d24f115de..0024b0a67 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/ExecutionResultExtensions.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/ExecutionResultExtensions.cs
@@ -4,31 +4,30 @@
 using Newtonsoft.Json.Serialization;
 using Xunit;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
+namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests;
+
+public static class ExecutionResultExtensions
 {
-    public static class ExecutionResultExtensions
+    public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
     {
-        public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
-        {
-            if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
-            if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
+        if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
+        if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
 
-            var actualJson = JToken.FromObject(actualResult,
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var actualJson = JToken.FromObject(actualResult,
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var expectedJsonObject = JObject.FromObject(
-                JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var expectedJsonObject = JObject.FromObject(
+            JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var jsonEqual = JToken.DeepEquals(expectedJsonObject, actualJson);
-            Assert.True(jsonEqual,
-                $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
-        }
+        var jsonEqual = JToken.DeepEquals(expectedJsonObject, actualJson);
+        Assert.True(jsonEqual,
+            $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
index a8ccc7998..1ebe2479a 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationFacts.cs
@@ -3,29 +3,29 @@
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
+namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests;
+
+public class FederationFacts
 {
-    public class FederationFacts
+    public FederationFacts()
     {
-        public FederationFacts()
-        {
-            Sut = SchemaFactory.Create().Result;
-        }
+        Sut = SchemaFactory.Create().Result;
+    }
 
-        public ISchema Sut { get; }
+    public ISchema Sut { get; }
 
-        [Fact]
-        public async Task Query_representation()
-        {
-            /* Given */
+    [Fact]
+    public async Task Query_representation()
+    {
+        /* Given */
 
-            /* When */
-            var result = await Executor
-                .ExecuteAsync(new ExecutionOptions
-                {
-                    IncludeExceptionDetails = true,
-                    Schema = Sut,
-                    Document = @"
+        /* When */
+        var result = await Executor
+            .ExecuteAsync(new ExecutionOptions
+            {
+                IncludeExceptionDetails = true,
+                Schema = Sut,
+                Document = @"
 query($representations:[_Any!]!) {
     _entities(representations:$representations) {
         ...on User {
@@ -42,21 +42,21 @@ ...on User {
         }
     }
 }",
-                    VariableValues = new Dictionary<string, object>
+                VariableValues = new Dictionary<string, object>
+                {
+                    ["representations"] = new[]
                     {
-                        ["representations"] = new[]
+                        new Dictionary<string, object>
                         {
-                            new Dictionary<string, object>
-                            {
-                                ["__typename"] = "User",
-                                ["id"] = 1
-                            }
+                            ["__typename"] = "User",
+                            ["id"] = 1
                         }
                     }
-                });
+                }
+            });
 
-            /* Then */
-            result.ShouldMatchJson(@"
+        /* Then */
+        result.ShouldMatchJson(@"
 {
   ""data"": {
     ""_entities"": [
@@ -89,35 +89,34 @@ ...on User {
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_sdl()
-        {
-            /* Given */
+    [Fact]
+    public async Task Query_sdl()
+    {
+        /* Given */
 
-            /* When */
-            var result = await Executor
-                .ExecuteAsync(new ExecutionOptions
-                {
-                    IncludeExceptionDetails = true,
-                    Schema = Sut,
-                    Document = @"query { _service { sdl } }"
-                });
+        /* When */
+        var result = await Executor
+            .ExecuteAsync(new ExecutionOptions
+            {
+                IncludeExceptionDetails = true,
+                Schema = Sut,
+                Document = @"query { _service { sdl } }"
+            });
 
-            /* Then */
-            Assert.Null(result.Errors);
-            //todo: fix test when builtin type ignored when printing
-            /*result.ShouldMatchJson(@"
+        /* Then */
+        Assert.Null(result.Errors);
+        //todo: fix test when builtin type ignored when printing
+        /*result.ShouldMatchJson(@"
 {
-  ""data"": {
-    ""_service"": {
-      ""sdl"": ""type Review  @key(fields: \""id\"") { id: ID! body: String author: User @provides(fields: \""username\"") product: Product }  type User  @key(fields: \""id\"") @extends { id: ID! @external username: String @external reviews: [Review] }  type Product  @key(fields: \""upc\"") @extends { upc: String! @external reviews: [Review] }""
-    }
-  },
-  ""extensions"": null,
-  ""errors"": null
+""data"": {
+""_service"": {
+  ""sdl"": ""type Review  @key(fields: \""id\"") { id: ID! body: String author: User @provides(fields: \""username\"") product: Product }  type User  @key(fields: \""id\"") @extends { id: ID! @external username: String @external reviews: [Review] }  type Product  @key(fields: \""upc\"") @extends { upc: String! @external reviews: [Review] }""
+}
+},
+""extensions"": null,
+""errors"": null
 }");*/
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
index 97a97a283..1147950a5 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/FederationSchemaBuilderFacts.cs
@@ -1,21 +1,21 @@
-using System.Linq;
-using System.Collections.Generic;
+using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
+namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests;
+
+public class FederationSchemaBuilderFacts
 {
-    public class FederationSchemaBuilderFacts
+    [Fact]
+    public async Task EntityUnion_does_not_contain_object_without_key_directive()
     {
-        [Fact]
-        public async Task EntityUnion_does_not_contain_object_without_key_directive()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Add(@"
+        /* Given */
+        var builder = new SchemaBuilder()
+            .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
                     }
@@ -23,43 +23,43 @@ type Address {
                         street: String
                     }");
 
-            /* When */
-            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
+        /* When */
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
 
-            var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
-            var entities = schema.GetPossibleTypes(entityUnion)
-                .ToList();
+        var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
+        var entities = schema.GetPossibleTypes(entityUnion)
+            .ToList();
 
-            /* Then */
-            Assert.Single(entities);
-        }
+        /* Then */
+        Assert.Single(entities);
+    }
 
-        [Fact]
-        public async Task EntityUnion_has_possible_type_with_key_directive()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Add(@"
+    [Fact]
+    public async Task EntityUnion_has_possible_type_with_key_directive()
+    {
+        /* Given */
+        var builder = new SchemaBuilder()
+            .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
                     }");
 
-            /* When */
-            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
+        /* When */
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions());
 
-            var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
-            var entities = schema.GetPossibleTypes(entityUnion);
+        var entityUnion = schema.GetRequiredNamedType<UnionDefinition>("_Entity");
+        var entities = schema.GetPossibleTypes(entityUnion);
 
-            /* Then */
-            Assert.Single(entities, obj => obj.Name == "Person");
-        }
+        /* Then */
+        Assert.Single(entities, obj => obj.Name == "Person");
+    }
 
-        [Fact]
-        public async Task Query_entities()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Add(@"
+    [Fact]
+    public async Task Query_entities()
+    {
+        /* Given */
+        var builder = new SchemaBuilder()
+            .Add(@"
                     type Person @key(fields: ""id"") {
                         id: ID!
                         name: String!
@@ -68,51 +68,51 @@ type Address @key(fields: ""street"") {
                         street: String
                     }");
 
-            var resolvers = new ResolversMap()
+        var resolvers = new ResolversMap
+        {
+            ["Person"] = new()
             {
-                ["Person"] = new FieldResolversMap
-                {
-                    { "id", context => ResolveSync.As("ID123") },
-                    { "name", context => ResolveSync.As("Name 123") }
-                }
-            };
+                { "id", context => ResolveSync.As("ID123") },
+                { "name", context => ResolveSync.As("Name 123") }
+            }
+        };
 
-            /* When */
-            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+        /* When */
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions
+        {
+            SchemaBuildOptions = new SchemaBuildOptions(resolvers),
+            ReferenceResolvers = new DictionaryReferenceResolversMap
             {
-                SchemaBuildOptions = new SchemaBuildOptions(resolvers),
-                ReferenceResolvers = new DictionaryReferenceResolversMap
-                {
-                    ["Person"] = (context, type, representation) => new ValueTask<ResolveReferenceResult>(
-                        new ResolveReferenceResult(type, representation))
-                }
-            });
+                ["Person"] = (context, type, representation) => new ValueTask<ResolveReferenceResult>(
+                    new ResolveReferenceResult(type, representation))
+            }
+        });
 
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = @"query Entities($reps: [_Any!]!) { 
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = schema,
+            Document = @"query Entities($reps: [_Any!]!) { 
 _entities(representations: $reps) { 
     ... on Person { 
         id 
         } 
     } 
 }",
-                VariableValues = new Dictionary<string, object>
+            VariableValues = new Dictionary<string, object>
+            {
+                ["reps"] = new List<object>
                 {
-                    ["reps"] = new List<object>
+                    new Dictionary<string, object>
                     {
-                        new Dictionary<string, object>
-                        {
-                            ["id"] = 101,
-                            ["__typename"] = "Person"
-                        }
+                        ["id"] = 101,
+                        ["__typename"] = "Person"
                     }
                 }
-            });
+            }
+        });
 
-            /* Then */
-            result.ShouldMatchJson(@"{
+        /* Then */
+        result.ShouldMatchJson(@"{
   ""data"": {
     ""_entities"": [
       {
@@ -123,14 +123,14 @@ ... on Person {
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Query_sdl()
-        {
-            /* Given */
-            var builder = new SchemaBuilder()
-                .Add(@"
+    [Fact]
+    public async Task Query_sdl()
+    {
+        /* Given */
+        var builder = new SchemaBuilder()
+            .Add(@"
 type Review  @key(fields: ""id"") {
   id: ID!
   product: Product
@@ -140,32 +140,31 @@ type Review  @key(fields: ""id"") {
 type Product @key(fields: ""upc"") @extends {
   upc: String! @external
 }");
-            /* When */
-            var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+        /* When */
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions
+        {
+            SchemaBuildOptions = new SchemaBuildOptions
             {
-                SchemaBuildOptions = new SchemaBuildOptions()
-                {
-                    BuildTypesFromOrphanedExtensions = true
-                },
-                ReferenceResolvers = new DictionaryReferenceResolversMap()
-            });
+                BuildTypesFromOrphanedExtensions = true
+            },
+            ReferenceResolvers = new DictionaryReferenceResolversMap()
+        });
 
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = @"
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = schema,
+            Document = @"
 {
     _service {
         sdl
     }
 }"
-            });
-
-            /* Then */
-            //todo: when buit in types are ignored fix this to validated the actual result
-            Assert.Null(result.Errors);
-            Assert.NotNull(result.Data);
-            Assert.NotEmpty(result.Data);
-        }
+        });
+
+        /* Then */
+        //todo: when buit in types are ignored fix this to validated the actual result
+        Assert.Null(result.Errors);
+        Assert.NotNull(result.Data);
+        Assert.NotEmpty(result.Data);
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/FieldSetScalarConverterFacts.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/FieldSetScalarConverterFacts.cs
index e1cd2bb2d..d525d9faf 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/FieldSetScalarConverterFacts.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/FieldSetScalarConverterFacts.cs
@@ -1,70 +1,69 @@
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests
+namespace Tanka.GraphQL.Extensions.ApolloFederation.Tests;
+
+public class FieldSetScalarConverterFacts
 {
-    public class FieldSetScalarConverterFacts
+    public FieldSetScalarConverterFacts()
     {
-        public FieldSetScalarConverterFacts()
-        {
-            Sut = new FieldSetScalarConverter();
-        }
+        Sut = new FieldSetScalarConverter();
+    }
 
-        protected FieldSetScalarConverter Sut { get; }
+    protected FieldSetScalarConverter Sut { get; }
 
-        [Fact]
-        public void ParseLiteral()
-        {
-            /* Given */
-            StringValue input = "one two";
+    [Fact]
+    public void ParseLiteral()
+    {
+        /* Given */
+        StringValue input = "one two";
 
-            /* When */
-            var actual = Sut.ParseLiteral(input)
-                as string;
+        /* When */
+        var actual = Sut.ParseLiteral(input)
+            as string;
 
-            /* Then */
-            Assert.Equal("one two", actual);
-        }
+        /* Then */
+        Assert.Equal("one two", actual);
+    }
 
-        [Fact]
-        public void ParseValue()
-        {
-            /* Given */
-            var input = "one two";
+    [Fact]
+    public void ParseValue()
+    {
+        /* Given */
+        var input = "one two";
 
-            /* When */
-            var actual = Sut.ParseValue(input)
-                as string;
+        /* When */
+        var actual = Sut.ParseValue(input)
+            as string;
 
-            /* Then */
-            Assert.Equal(input, actual);
-        }
+        /* Then */
+        Assert.Equal(input, actual);
+    }
 
-        [Fact]
-        public void Serialize()
-        {
-            /* Given */
-            var input = "one two";
+    [Fact]
+    public void Serialize()
+    {
+        /* Given */
+        var input = "one two";
 
-            /* When */
-            var actual = Sut.Serialize(input);
+        /* When */
+        var actual = Sut.Serialize(input);
 
-            /* Then */
-            Assert.Equal(input, actual);
-        }
+        /* Then */
+        Assert.Equal(input, actual);
+    }
 
-        [Fact]
-        public void SerializeLiteral()
-        {
-            /* Given */
-            var input = "one two";
+    [Fact]
+    public void SerializeLiteral()
+    {
+        /* Given */
+        var input = "one two";
 
-            /* When */
-            var actual = Sut.SerializeLiteral(input)
-                as StringValue;
+        /* When */
+        var actual = Sut.SerializeLiteral(input)
+            as StringValue;
 
-            /* Then */
-            Assert.Equal("one two", actual.ToString());
-        }
+        /* Then */
+        Assert.Equal("one two", actual.ToString());
     }
 }
\ No newline at end of file
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj b/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
index 799a2f9fd..77116e941 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/GraphQL.Extensions.ApolloFederation.Tests.csproj
@@ -8,13 +8,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs b/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
index f82c333af..0170fd1c8 100644
--- a/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
+++ b/tests/GraphQL.Extensions.ApolloFederation.Tests/SchemaFactory.cs
@@ -60,15 +60,15 @@ type Query {
             }
         };
 
-        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions()
+        var schema = await builder.BuildSubgraph(new FederatedSchemaBuildOptions
+        {
+            SchemaBuildOptions = new SchemaBuildOptions(resolvers),
+            ReferenceResolvers = new DictionaryReferenceResolversMap
             {
-                SchemaBuildOptions = new SchemaBuildOptions(resolvers),
-                ReferenceResolvers = new DictionaryReferenceResolversMap
-                {
-                    ["User"] = UserReference,
-                    ["Product"] = ProductReference
-                }
-            });
+                ["User"] = UserReference,
+                ["Product"] = ProductReference
+            }
+        });
 
         return schema;
     }
diff --git a/tests/graphql.language.tests/BufferWriterFacts.cs b/tests/graphql.language.tests/BufferWriterFacts.cs
index fcc511e41..3af4090ba 100644
--- a/tests/graphql.language.tests/BufferWriterFacts.cs
+++ b/tests/graphql.language.tests/BufferWriterFacts.cs
@@ -3,49 +3,48 @@
 using Tanka.GraphQL.Language.Internal;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class BufferWriterFacts
 {
-    public class BufferWriterFacts
+    [Fact]
+    public void Create()
     {
-        [Fact]
-        public void Create()
-        {
-            /* Given */
-            using var sut = new BufferWriter(1024);
+        /* Given */
+        using var sut = new BufferWriter(1024);
 
-            /* Then */
-            Assert.Equal(1024, sut.FreeSpan.Length);
-            Assert.Equal(0, sut.WrittenSpan.Length);
-        }
+        /* Then */
+        Assert.Equal(1024, sut.FreeSpan.Length);
+        Assert.Equal(0, sut.WrittenSpan.Length);
+    }
 
-        [Fact]
-        public void Write()
-        {
-            /* Given */
-            ReadOnlySpan<byte> data = Encoding.UTF8.GetBytes("12345");
+    [Fact]
+    public void Write()
+    {
+        /* Given */
+        ReadOnlySpan<byte> data = Encoding.UTF8.GetBytes("12345");
 
-            const int bufferSize = 1024;
-            using var sut = new BufferWriter(bufferSize);
+        const int bufferSize = 1024;
+        using var sut = new BufferWriter(bufferSize);
 
-            /* When */
-            sut.Write(data);
+        /* When */
+        sut.Write(data);
 
-            /* Then */
-            Assert.Equal(bufferSize - data.Length, sut.FreeSpan.Length);
-            Assert.Equal(data.Length, sut.WrittenSpan.Length);
-            Assert.Equal("12345", Encoding.UTF8.GetString(sut.WrittenSpan));
-        }
+        /* Then */
+        Assert.Equal(bufferSize - data.Length, sut.FreeSpan.Length);
+        Assert.Equal(data.Length, sut.WrittenSpan.Length);
+        Assert.Equal("12345", Encoding.UTF8.GetString(sut.WrittenSpan));
+    }
 
-        [Fact]
-        public void Write_too_much()
+    [Fact]
+    public void Write_too_much()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() =>
         {
-            Assert.Throws<ArgumentOutOfRangeException>(() =>
-            {
-                ReadOnlySpan<byte> data = Encoding.UTF8.GetBytes("12345");
-                const int bufferSize = 4;
-                using var sut = new BufferWriter(bufferSize);
-                sut.Write(data);
-            });
-        }
+            ReadOnlySpan<byte> data = Encoding.UTF8.GetBytes("12345");
+            const int bufferSize = 4;
+            using var sut = new BufferWriter(bufferSize);
+            sut.Write(data);
+        });
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/LexerFacts.cs b/tests/graphql.language.tests/LexerFacts.cs
index 37a096e2b..59d8b7277 100644
--- a/tests/graphql.language.tests/LexerFacts.cs
+++ b/tests/graphql.language.tests/LexerFacts.cs
@@ -2,93 +2,92 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Text;
-using Tanka.GraphQL.Language.Internal;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class LexerFacts
 {
-    public class LexerFacts
+    [Theory]
+    [InlineData(Constants.ExclamationMark, TokenKind.ExclamationMark)]
+    [InlineData(Constants.Dollar, TokenKind.Dollar)]
+    [InlineData(Constants.Ampersand, TokenKind.Ampersand)]
+    [InlineData(Constants.LeftParenthesis, TokenKind.LeftParenthesis)]
+    [InlineData(Constants.RightParenthesis, TokenKind.RightParenthesis)]
+    [InlineData(Constants.Colon, TokenKind.Colon)]
+    [InlineData(Constants.Equal, TokenKind.Equal)]
+    [InlineData(Constants.At, TokenKind.At)]
+    [InlineData(Constants.LeftBracket, TokenKind.LeftBracket)]
+    [InlineData(Constants.RightBracket, TokenKind.RightBracket)]
+    [InlineData(Constants.LeftBrace, TokenKind.LeftBrace)]
+    [InlineData(Constants.Pipe, TokenKind.Pipe)]
+    [InlineData(Constants.RightBrace, TokenKind.RightBrace)]
+    public void ReadPunctuator(byte punctuator, TokenKind expectedKind)
     {
-        [Theory]
-        [InlineData(Constants.ExclamationMark, TokenKind.ExclamationMark)]
-        [InlineData(Constants.Dollar, TokenKind.Dollar)]
-        [InlineData(Constants.Ampersand, TokenKind.Ampersand)]
-        [InlineData(Constants.LeftParenthesis, TokenKind.LeftParenthesis)]
-        [InlineData(Constants.RightParenthesis, TokenKind.RightParenthesis)]
-        [InlineData(Constants.Colon, TokenKind.Colon)]
-        [InlineData(Constants.Equal, TokenKind.Equal)]
-        [InlineData(Constants.At, TokenKind.At)]
-        [InlineData(Constants.LeftBracket, TokenKind.LeftBracket)]
-        [InlineData(Constants.RightBracket, TokenKind.RightBracket)]
-        [InlineData(Constants.LeftBrace, TokenKind.LeftBrace)]
-        [InlineData(Constants.Pipe, TokenKind.Pipe)]
-        [InlineData(Constants.RightBrace, TokenKind.RightBrace)]
-        public void ReadPunctuator(byte punctuator, TokenKind expectedKind)
+        /* Given */
+        var source = new ReadOnlySpan<byte>(new[]
         {
-            /* Given */
-            var source = new ReadOnlySpan<byte>(new[]
-            {
-                punctuator
-            });
+            punctuator
+        });
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(expectedKind, sut.Kind);
-        }
+        /* Then */
+        Assert.Equal(expectedKind, sut.Kind);
+    }
 
-        [Fact]
-        public void IgnoreWhitespace()
-        {
-            /* Given */
-            var source = "   {";
+    [Fact]
+    public void IgnoreWhitespace()
+    {
+        /* Given */
+        var source = "   {";
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(TokenKind.LeftBrace, sut.Kind);
-            Assert.Equal(1, sut.Line);
-            Assert.Equal(4, sut.Column);
-        }
+        /* Then */
+        Assert.Equal(TokenKind.LeftBrace, sut.Kind);
+        Assert.Equal(1, sut.Line);
+        Assert.Equal(4, sut.Column);
+    }
 
-        [Fact]
-        public void ReadBom()
-        {
-            /* Given */
-            var source = Encoding.UTF8.GetPreamble();
+    [Fact]
+    public void ReadBom()
+    {
+        /* Given */
+        var source = Encoding.UTF8.GetPreamble();
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(Constants.Bom.Length - 1, sut.Position);
-            Assert.Equal(TokenKind.End, sut.Kind);
-        }
-
-        [Conditional("GQL_COMMENTS")]
-        [Theory]
-        [InlineData("# comment")]
-        [InlineData("#comment")]
-        [InlineData("# comment\n")]
-        [InlineData("#comment\r")]
-        [InlineData("#comment\r\n")]
-        public void ReadComment(string comment)
-        {
-            /* Given */
-            var source = comment;
+        /* Then */
+        Assert.Equal(Constants.Bom.Length - 1, sut.Position);
+        Assert.Equal(TokenKind.End, sut.Kind);
+    }
+
+    [Conditional("GQL_COMMENTS")]
+    [Theory]
+    [InlineData("# comment")]
+    [InlineData("#comment")]
+    [InlineData("# comment\n")]
+    [InlineData("#comment\r")]
+    [InlineData("#comment\r\n")]
+    public void ReadComment(string comment)
+    {
+        /* Given */
+        var source = comment;
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
 #if GQL_COMMENTS
             /* Then */
@@ -96,200 +95,199 @@ public void ReadComment(string comment)
             Assert.Equal("comment", Encoding.UTF8.GetString(sut.Value));
             Assert.Equal(1, sut.Column);
 #endif
-        }
+    }
 
-        [Fact]
-        public void ReadSpreadPunctuator()
-        {
-            /* Given */
-            var source = "...";
+    [Fact]
+    public void ReadSpreadPunctuator()
+    {
+        /* Given */
+        var source = "...";
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(TokenKind.Spread, sut.Kind);
-            Assert.Equal(1, sut.Column);
-        }
+        /* Then */
+        Assert.Equal(TokenKind.Spread, sut.Kind);
+        Assert.Equal(1, sut.Column);
+    }
 
-        [Fact]
-        public void ReadSpreadPunctuator2()
-        {
-            /* Given */
-            var source = "{...}";
+    [Fact]
+    public void ReadSpreadPunctuator2()
+    {
+        /* Given */
+        var source = "{...}";
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
-            sut.Advance();
+        /* When */
+        sut.Advance();
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(TokenKind.Spread, sut.Kind);
-            Assert.Equal(2, sut.Column);
-        }
+        /* Then */
+        Assert.Equal(TokenKind.Spread, sut.Kind);
+        Assert.Equal(2, sut.Column);
+    }
 
-        [Fact]
-        public void ReadTokenAfterSpreadPunctuator()
-        {
-            /* Given */
-            var source = "{...}";
+    [Fact]
+    public void ReadTokenAfterSpreadPunctuator()
+    {
+        /* Given */
+        var source = "{...}";
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
-            sut.Advance();
-            sut.Advance();
+        /* When */
+        sut.Advance();
+        sut.Advance();
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(TokenKind.RightBrace, sut.Kind);
-            Assert.Equal(5, sut.Column);
-        }
+        /* Then */
+        Assert.Equal(TokenKind.RightBrace, sut.Kind);
+        Assert.Equal(5, sut.Column);
+    }
 
-        [Fact]
-        public void Column()
-        {
-            /* Given */
-            var source = "...{}...";
+    [Fact]
+    public void Column()
+    {
+        /* Given */
+        var source = "...{}...";
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-           var actual = new List<(TokenKind Kind, long Line, long Column)>();
+        var actual = new List<(TokenKind Kind, long Line, long Column)>();
 
-            /* When */
-            while(sut.Advance())
-                actual.Add((sut.Kind, sut.Line, sut.Column));
+        /* When */
+        while (sut.Advance())
+            actual.Add((sut.Kind, sut.Line, sut.Column));
 
-            /* Then */
-            Assert.Contains(actual, token => 
-                token.Kind == TokenKind.LeftBrace
-                && token.Column == 4);
-        }
-
-        [Theory]
-        [InlineData("name")]
-        [InlineData("_name")]
-        [InlineData("__name")]
-        [InlineData("d123")]
-        [InlineData("_123")]
-        public void ReadName(string name)
-        {
-            /* Given */
-            var source = name;
+        /* Then */
+        Assert.Contains(actual, token =>
+            token.Kind == TokenKind.LeftBrace
+            && token.Column == 4);
+    }
 
-            var sut = Lexer.Create(source);
+    [Theory]
+    [InlineData("name")]
+    [InlineData("_name")]
+    [InlineData("__name")]
+    [InlineData("d123")]
+    [InlineData("_123")]
+    public void ReadName(string name)
+    {
+        /* Given */
+        var source = name;
 
-            /* When */
-            sut.Advance();
+        var sut = Lexer.Create(source);
 
-            /* Then */
-            Assert.Equal(TokenKind.Name, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(name, Encoding.UTF8.GetString(sut.Value));
-        }
-
-        [Theory]
-        [InlineData("123")]
-        [InlineData("-123")]
-        [InlineData("0")]
-        public void ReadInteger(string integer)
-        {
-            /* Given */
-            var source = integer;
+        /* When */
+        sut.Advance();
 
-            var sut = Lexer.Create(source);
+        /* Then */
+        Assert.Equal(TokenKind.Name, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(name, Encoding.UTF8.GetString(sut.Value));
+    }
 
-            /* When */
-            sut.Advance();
+    [Theory]
+    [InlineData("123")]
+    [InlineData("-123")]
+    [InlineData("0")]
+    public void ReadInteger(string integer)
+    {
+        /* Given */
+        var source = integer;
 
-            /* Then */
-            Assert.Equal(TokenKind.IntValue, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(integer, Encoding.UTF8.GetString(sut.Value));
-        }
-
-        [Theory]
-        [InlineData("123.123")]
-        [InlineData("-123.123")]
-        [InlineData("123e123")]
-        [InlineData("-123e123")]
-        [InlineData("123.123e20")]
-        public void ReadFloat(string floatValue)
-        {
-            /* Given */
-            var source = floatValue;
+        var sut = Lexer.Create(source);
 
-            var sut = Lexer.Create(source);
+        /* When */
+        sut.Advance();
 
-            /* When */
-            sut.Advance();
+        /* Then */
+        Assert.Equal(TokenKind.IntValue, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(integer, Encoding.UTF8.GetString(sut.Value));
+    }
 
-            /* Then */
-            Assert.Equal(TokenKind.FloatValue, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(floatValue, Encoding.UTF8.GetString(sut.Value));
-        }
-
-        [Theory]
-        [InlineData("\"\"", "")]
-        [InlineData("\"test\"", "test")]
-        [InlineData("\"test \\\"\"", "test \\\"")]
-        public void ReadString(string stringValue, string expectedValue)
-        {
-            /* Given */
-            var source = stringValue;
+    [Theory]
+    [InlineData("123.123")]
+    [InlineData("-123.123")]
+    [InlineData("123e123")]
+    [InlineData("-123e123")]
+    [InlineData("123.123e20")]
+    public void ReadFloat(string floatValue)
+    {
+        /* Given */
+        var source = floatValue;
 
-            var sut = Lexer.Create(source);
+        var sut = Lexer.Create(source);
 
-            /* When */
-            sut.Advance();
+        /* When */
+        sut.Advance();
 
-            /* Then */
-            Assert.Equal(TokenKind.StringValue, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
-        }
-
-        [Theory]
-        [InlineData("\"\"\"\"\"\"", "")]
-        [InlineData("\"\"\"test\"\"\"", "test")]
-        [InlineData("\"\"\"test \\\"\"\"\"\"\"", "test \\\"\"\"")]
-        [InlineData("\"\"\"test test test\"\"\"", "test test test")]
-        public void ReadBlockStringValue(string stringValue, string expectedValue)
-        {
-            /* Given */
-            var source = stringValue;
+        /* Then */
+        Assert.Equal(TokenKind.FloatValue, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(floatValue, Encoding.UTF8.GetString(sut.Value));
+    }
 
-            var sut = Lexer.Create(source);
+    [Theory]
+    [InlineData("\"\"", "")]
+    [InlineData("\"test\"", "test")]
+    [InlineData("\"test \\\"\"", "test \\\"")]
+    public void ReadString(string stringValue, string expectedValue)
+    {
+        /* Given */
+        var source = stringValue;
 
-            /* When */
-            sut.Advance();
+        var sut = Lexer.Create(source);
 
-            /* Then */
-            Assert.Equal(TokenKind.BlockStringValue, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
-        }
+        /* When */
+        sut.Advance();
 
-        [Theory]
-        [InlineData("\"test\"", "test")]
-        public void ReadStringValue(string stringValue, string expectedValue)
-        {
-            /* Given */
-            var source = stringValue;
+        /* Then */
+        Assert.Equal(TokenKind.StringValue, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
+    }
 
-            var sut = Lexer.Create(source);
+    [Theory]
+    [InlineData("\"\"\"\"\"\"", "")]
+    [InlineData("\"\"\"test\"\"\"", "test")]
+    [InlineData("\"\"\"test \\\"\"\"\"\"\"", "test \\\"\"\"")]
+    [InlineData("\"\"\"test test test\"\"\"", "test test test")]
+    public void ReadBlockStringValue(string stringValue, string expectedValue)
+    {
+        /* Given */
+        var source = stringValue;
 
-            /* When */
-            sut.Advance();
+        var sut = Lexer.Create(source);
 
-            /* Then */
-            Assert.Equal(TokenKind.StringValue, sut.Kind);
-            Assert.Equal(1, sut.Column);
-            Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
-        }
+        /* When */
+        sut.Advance();
+
+        /* Then */
+        Assert.Equal(TokenKind.BlockStringValue, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
+    }
+
+    [Theory]
+    [InlineData("\"test\"", "test")]
+    public void ReadStringValue(string stringValue, string expectedValue)
+    {
+        /* Given */
+        var source = stringValue;
+
+        var sut = Lexer.Create(source);
+
+        /* When */
+        sut.Advance();
+
+        /* Then */
+        Assert.Equal(TokenKind.StringValue, sut.Kind);
+        Assert.Equal(1, sut.Column);
+        Assert.Equal(expectedValue, Encoding.UTF8.GetString(sut.Value));
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/LineReaderFacts.cs b/tests/graphql.language.tests/LineReaderFacts.cs
index 4a6d1c2c6..1f24ebd33 100644
--- a/tests/graphql.language.tests/LineReaderFacts.cs
+++ b/tests/graphql.language.tests/LineReaderFacts.cs
@@ -1,28 +1,26 @@
 using System.Text;
 using Tanka.GraphQL.Language.Internal;
-using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class LineReaderFacts
 {
-    public class LineReaderFacts
+    [Fact]
+    public void ReadLines()
     {
-        [Fact]
-        public void ReadLines()
-        {
-            /* Given */
-            var source = "first\nsecond";
+        /* Given */
+        var source = "first\nsecond";
 
-            var sut = new LineReader(Encoding.UTF8.GetBytes(source));
+        var sut = new LineReader(Encoding.UTF8.GetBytes(source));
 
-            /* When */
-            Assert.True(sut.TryReadLine(out var firstLine));
-            Assert.True(sut.TryReadLine(out var secondLine));
-            Assert.False(sut.TryReadLine(out _));
+        /* When */
+        Assert.True(sut.TryReadLine(out var firstLine));
+        Assert.True(sut.TryReadLine(out var secondLine));
+        Assert.False(sut.TryReadLine(out _));
 
-            /* Then */
-            Assert.Equal("first", Encoding.UTF8.GetString(firstLine));
-            Assert.Equal("second", Encoding.UTF8.GetString(secondLine));
-        }
+        /* Then */
+        Assert.Equal("first", Encoding.UTF8.GetString(firstLine));
+        Assert.Equal("second", Encoding.UTF8.GetString(secondLine));
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/DirectiveDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/DirectiveDefinitionFacts.cs
index 39f94e3e3..85bf266bb 100644
--- a/tests/graphql.language.tests/Nodes/DirectiveDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/DirectiveDefinitionFacts.cs
@@ -1,97 +1,96 @@
-using System;
-using System.Text;
+using System.Text;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class DirectiveDefinitionFacts
 {
-    public class DirectiveDefinitionFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        DirectiveDefinition original = Encoding.UTF8.GetBytes("directive @a(x: Int, y: Float) on FIELD")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("a", original.Name);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        DirectiveDefinition original = "directive @a(x: Int, y: Float) on FIELD";
+
+        /* Then */
+        Assert.Equal("a", original.Name);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        DirectiveDefinition original = @"directive @a on SCHEMA";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            DirectiveDefinition original = Encoding.UTF8.GetBytes("directive @a(x: Int, y: Float) on FIELD")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.Equal("a", original.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            DirectiveDefinition original = "directive @a(x: Int, y: Float) on FIELD";
-
-            /* Then */
-            Assert.Equal("a", original.Name);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            DirectiveDefinition original = @"directive @a on SCHEMA";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            DirectiveDefinition original = @"directive @a on SCHEMA";
-
-            /* When */
-            var modified = original
-                .WithName("b");
-
-            /* Then */
-            Assert.Equal("a", original.Name);
-            Assert.Equal("b", modified.Name);
-        }
-
-        [Fact]
-        public void WithArguments()
-        {
-            /* Given */
-            DirectiveDefinition original = @"directive @a on SCHEMA";
-
-            /* When */
-            var modified = original
-                .WithArguments(new InputValueDefinition[]
-                {
-                    "x: Int"
-                });
-
-            /* Then */
-            Assert.Equal(1, modified.Arguments?.Count);
-        }
-        [Fact]
-        public void WithDirectiveLocations()
-        {
-            /* Given */
-            DirectiveDefinition original = @"directive @a on SCHEMA";
-
-            /* When */
-            var modified = original
-                .WithDirectiveLocations(new []
-                {
-                    "FIELD"
-                });
-
-            /* Then */
-            var location = Assert.Single(modified.DirectiveLocations);
-            Assert.Equal("FIELD", location);
-        }
+        /* Given */
+        DirectiveDefinition original = @"directive @a on SCHEMA";
+
+        /* When */
+        var modified = original
+            .WithName("b");
+
+        /* Then */
+        Assert.Equal("a", original.Name);
+        Assert.Equal("b", modified.Name);
+    }
+
+    [Fact]
+    public void WithArguments()
+    {
+        /* Given */
+        DirectiveDefinition original = @"directive @a on SCHEMA";
+
+        /* When */
+        var modified = original
+            .WithArguments(new InputValueDefinition[]
+            {
+                "x: Int"
+            });
+
+        /* Then */
+        Assert.Equal(1, modified.Arguments?.Count);
+    }
+
+    [Fact]
+    public void WithDirectiveLocations()
+    {
+        /* Given */
+        DirectiveDefinition original = @"directive @a on SCHEMA";
+
+        /* When */
+        var modified = original
+            .WithDirectiveLocations(new[]
+            {
+                "FIELD"
+            });
+
+        /* Then */
+        var location = Assert.Single(modified.DirectiveLocations);
+        Assert.Equal("FIELD", location);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/DirectiveFacts.cs b/tests/graphql.language.tests/Nodes/DirectiveFacts.cs
index 010894a2c..2a07b5ca1 100644
--- a/tests/graphql.language.tests/Nodes/DirectiveFacts.cs
+++ b/tests/graphql.language.tests/Nodes/DirectiveFacts.cs
@@ -4,71 +4,70 @@
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class DirectiveFacts
 {
-    public class DirectiveFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            Directive original = Encoding.UTF8.GetBytes("@a(x: 100, y: 100)")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        Directive original = Encoding.UTF8.GetBytes("@a(x: 100, y: 100)")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("a", original.Name);
+        Assert.NotNull(original.Arguments);
+        Assert.Equal(2, original.Arguments?.Count);
+    }
 
-            /* Then */
-            Assert.Equal("a", original.Name);
-            Assert.NotNull(original.Arguments);
-            Assert.Equal(2, original.Arguments?.Count);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            Directive original = "@a(x: 100, y: 100)";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        Directive original = "@a(x: 100, y: 100)";
 
-            /* Then */
-            Assert.Equal("a", original.Name);
-            Assert.NotNull(original.Arguments);
-            Assert.Equal(2, original.Arguments?.Count);
-        }
+        /* Then */
+        Assert.Equal("a", original.Name);
+        Assert.NotNull(original.Arguments);
+        Assert.Equal(2, original.Arguments?.Count);
+    }
 
-        [Fact]
-        public void WithArguments()
-        {
-            /* Given */
-            Directive original = "@a(x: 100, y: 100)";
+    [Fact]
+    public void WithArguments()
+    {
+        /* Given */
+        Directive original = "@a(x: 100, y: 100)";
 
-            /* When */
-            var modified = original
-                .WithArguments(
-                    new List<Argument>(original.Arguments ?? Enumerable.Empty<Argument>())
-                        .Concat(new []
-                        {
-                            new Argument("x", new IntValue(100, default), default), 
-                        }).ToList()
-                    );
+        /* When */
+        var modified = original
+            .WithArguments(
+                new List<Argument>(original.Arguments ?? Enumerable.Empty<Argument>())
+                    .Concat(new[]
+                    {
+                        new Argument("x", new IntValue(100))
+                    }).ToList()
+            );
 
-            /* Then */
-            Assert.Equal(2, original.Arguments?.Count);
-            Assert.Equal(3, modified.Arguments?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, original.Arguments?.Count);
+        Assert.Equal(3, modified.Arguments?.Count);
+    }
 
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            Directive original = "@a(x: 100, y: 100)";
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        Directive original = "@a(x: 100, y: 100)";
 
-            /* When */
-            var modified = original
-                .WithName("b");
+        /* When */
+        var modified = original
+            .WithName("b");
 
-            /* Then */
-            Assert.Equal("a", original.Name);
-            Assert.Equal("b", modified.Name);
-        }
+        /* Then */
+        Assert.Equal("a", original.Name);
+        Assert.Equal("b", modified.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/EnumDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/EnumDefinitionFacts.cs
index 3eb52e06f..79f73ba7f 100644
--- a/tests/graphql.language.tests/Nodes/EnumDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/EnumDefinitionFacts.cs
@@ -4,99 +4,98 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class EnumDefinitionFacts
 {
-    public class EnumDefinitionFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        EnumDefinition original = Encoding.UTF8.GetBytes("enum ENUM { V1, V2 }")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("ENUM", original.Name);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        EnumDefinition original = "enum ENUM { V1, V2 }";
+
+        /* Then */
+        Assert.Equal("ENUM", original.Name);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        EnumDefinition original = @"enum ENUM { V1, V2 }";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            EnumDefinition original = Encoding.UTF8.GetBytes("enum ENUM { V1, V2 }")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.Equal("ENUM", original.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            EnumDefinition original = "enum ENUM { V1, V2 }";
-
-            /* Then */
-            Assert.Equal("ENUM", original.Name);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            EnumDefinition original = @"enum ENUM { V1, V2 }";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            EnumDefinition original = @"enum ENUM { V1, V2 }";
-
-            /* When */
-            var modified = original
-                .WithName("Renamed");
-
-            /* Then */
-            Assert.Equal("ENUM", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
-
-        [Fact]
-        public void WithValues()
-        {
-            /* Given */
-            EnumDefinition original = @"enum ENUM { V1, V2 }";
-
-            /* When */
-            var modified = original
-                .WithValues(new List<EnumValueDefinition>
-                {
-                    "V3 @new"
-                });
-
-            /* Then */
-            Assert.Equal(2, original.Values?.Count);
-            Assert.Equal(1, modified.Values?.Count);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            EnumDefinition original = @"enum ENUM { V1, V2 }";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
-
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Given */
+        EnumDefinition original = @"enum ENUM { V1, V2 }";
+
+        /* When */
+        var modified = original
+            .WithName("Renamed");
+
+        /* Then */
+        Assert.Equal("ENUM", original.Name);
+        Assert.Equal("Renamed", modified.Name);
+    }
+
+    [Fact]
+    public void WithValues()
+    {
+        /* Given */
+        EnumDefinition original = @"enum ENUM { V1, V2 }";
+
+        /* When */
+        var modified = original
+            .WithValues(new List<EnumValueDefinition>
+            {
+                "V3 @new"
+            });
+
+        /* Then */
+        Assert.Equal(2, original.Values?.Count);
+        Assert.Equal(1, modified.Values?.Count);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        EnumDefinition original = @"enum ENUM { V1, V2 }";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/EnumValueDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/EnumValueDefinitionFacts.cs
index 2c0c9f35d..badba4c47 100644
--- a/tests/graphql.language.tests/Nodes/EnumValueDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/EnumValueDefinitionFacts.cs
@@ -4,81 +4,80 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class EnumValueDefinitionFacts
 {
-    public class EnumValueDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            EnumValueDefinition original = Encoding.UTF8.GetBytes("V1")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        EnumValueDefinition original = Encoding.UTF8.GetBytes("V1")
+            .AsReadOnlySpan();
 
-            /* Then */
-            Assert.Equal("V1", original.Value.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            EnumValueDefinition original = "V1";
+        /* Then */
+        Assert.Equal("V1", original.Value.Name);
+    }
 
-            /* Then */
-            Assert.Equal("V1", original.Value.Name);
-        }
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        EnumValueDefinition original = "V1";
+
+        /* Then */
+        Assert.Equal("V1", original.Value.Name);
+    }
 
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            EnumValueDefinition original = @"V1";
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        EnumValueDefinition original = @"V1";
 
-            /* When */
-            var modified = original
-                .WithDescription("Description");
+        /* When */
+        var modified = original
+            .WithDescription("Description");
 
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
 
-        [Fact]
-        public void WithValue()
-        {
-            /* Given */
-            EnumValueDefinition original = @"V1";
+    [Fact]
+    public void WithValue()
+    {
+        /* Given */
+        EnumValueDefinition original = @"V1";
 
-            /* When */
-            var modified = original
-                .WithValue(new EnumValue("RENAMED"));
+        /* When */
+        var modified = original
+            .WithValue(new EnumValue("RENAMED"));
 
-            /* Then */
-            Assert.Equal("V1", original.Value.Name);
-            Assert.Equal("RENAMED", modified.Value.Name);
-        }
+        /* Then */
+        Assert.Equal("V1", original.Value.Name);
+        Assert.Equal("RENAMED", modified.Value.Name);
+    }
 
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            EnumValueDefinition original = @"V1";
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        EnumValueDefinition original = @"V1";
 
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
 
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs b/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
index 627e891c7..29d0c72b4 100644
--- a/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
+++ b/tests/graphql.language.tests/Nodes/ExecutableDocumentFacts.cs
@@ -2,47 +2,46 @@
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class ExecutableDocumentFacts
 {
-    public class ExecutableDocumentFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        ExecutableDocument original = Encoding.UTF8.GetBytes("{ field1 field2 }")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.NotNull(original.OperationDefinitions);
+        Assert.Single(original.OperationDefinitions);
+    }
+
+    [Fact]
+    public void FromString()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            ExecutableDocument original = Encoding.UTF8.GetBytes("{ field1 field2 }")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.NotNull(original.OperationDefinitions);
-            Assert.Single(original.OperationDefinitions);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            ExecutableDocument original = "{ field1 field2 }";
-
-            /* Then */
-            Assert.NotNull(original.OperationDefinitions);
-            Assert.Single(original.OperationDefinitions);
-        }
-
-        [Fact]
-        public void OverrideToString()
-        {
-            /* Given */
-            string expected = "{ field1 field2 }";
-            ExecutableDocument original = expected;
-
-            /* When */
-            var actual = original.ToString();
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
+        /* Given */
+        /* When */
+        ExecutableDocument original = "{ field1 field2 }";
+
+        /* Then */
+        Assert.NotNull(original.OperationDefinitions);
+        Assert.Single(original.OperationDefinitions);
+    }
+
+    [Fact]
+    public void OverrideToString()
+    {
+        /* Given */
+        var expected = "{ field1 field2 }";
+        ExecutableDocument original = expected;
+
+        /* When */
+        var actual = original.ToString();
+
+        /* Then */
+        Assert.Equal(expected, actual);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/FieldDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/FieldDefinitionFacts.cs
index 6ae5a1f59..4e14582c9 100644
--- a/tests/graphql.language.tests/Nodes/FieldDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/FieldDefinitionFacts.cs
@@ -1,121 +1,119 @@
-using System.Linq;
-using System.Text;
+using System.Text;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class FieldDefinitionFacts
 {
-    public class FieldDefinitionFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        FieldDefinition original = Encoding.UTF8.GetBytes("field: String")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.IsType<NamedType>(original.Type);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        FieldDefinition original = "field: String";
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.IsType<NamedType>(original.Type);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        FieldDefinition original = @"field: Int";
+
+        /* When */
+        var withDescription = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", withDescription.Description);
+    }
+
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        FieldDefinition original = @"field: Int";
+
+        /* When */
+        var renamed = original
+            .WithName("renamed");
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.Equal("renamed", renamed.Name);
+    }
+
+
+    [Fact]
+    public void WithArguments()
+    {
+        /* Given */
+        FieldDefinition original = @"field: Int";
+
+        /* When */
+        var modified = original
+            .WithArguments(new InputValueDefinition[]
+            {
+                "id: ID!"
+            });
+
+        /* Then */
+        Assert.NotNull(modified.Arguments);
+        var id = Assert.Single(modified.Arguments);
+        Assert.Equal("id", id?.Name);
+    }
+
+    [Fact]
+    public void WithType()
+    {
+        /* Given */
+        FieldDefinition original = @"field: Int";
+
+        /* When */
+        var modified = original
+            .WithType("String!");
+
+        /* Then */
+        var nonNull = Assert.IsType<NonNullType>(modified.Type);
+        var named = Assert.IsType<NamedType>(nonNull.OfType);
+        Assert.Equal("String", named.Name);
+    }
+
+    [Fact]
+    public void WithDirectives()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            FieldDefinition original = Encoding.UTF8.GetBytes("field: String")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.IsType<NamedType>(original.Type);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            FieldDefinition original = "field: String";
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.IsType<NamedType>(original.Type);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            FieldDefinition original = @"field: Int";
-
-            /* When */
-            var withDescription = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", withDescription.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            FieldDefinition original = @"field: Int";
-
-            /* When */
-            var renamed = original
-                .WithName("renamed");
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.Equal("renamed", renamed.Name);
-        }
-
-        
-        [Fact]
-        public void WithArguments()
-        {
-            /* Given */
-            FieldDefinition original = @"field: Int";
-
-            /* When */
-            var modified = original
-                .WithArguments(new InputValueDefinition[]
-                {
-                    "id: ID!"
-                });
-
-            /* Then */
-            Assert.NotNull(modified.Arguments);
-            var id = Assert.Single(modified.Arguments);
-            Assert.Equal("id", id?.Name);
-        }
-
-        [Fact]
-        public void WithType()
-        {
-            /* Given */
-            FieldDefinition original = @"field: Int";
-
-            /* When */
-            var modified = original
-                .WithType("String!");
-
-            /* Then */
-            var nonNull = Assert.IsType<NonNullType>(modified.Type);
-            var named = Assert.IsType<NamedType>(nonNull.OfType);
-            Assert.Equal("String", named.Name);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            FieldDefinition original = @"field: Int";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new []
-                {
-                    new Directive("a", null, null), 
-                });
-
-            /* Then */
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Given */
+        FieldDefinition original = @"field: Int";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new[]
+            {
+                new Directive("a", null)
+            });
+
+        /* Then */
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/InputObjectDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/InputObjectDefinitionFacts.cs
index 86073eef8..4540336ca 100644
--- a/tests/graphql.language.tests/Nodes/InputObjectDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/InputObjectDefinitionFacts.cs
@@ -5,128 +5,127 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class InputInputObjectDefinitionFacts
 {
-    public class InputInputObjectDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            InputObjectDefinition original =
-                Encoding.UTF8.GetBytes(@"input Obj {
+        /* Given */
+        /* When */
+        InputObjectDefinition original =
+            Encoding.UTF8.GetBytes(@"input Obj {
                     field1: String
                 }").AsReadOnlySpan();
 
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            InputObjectDefinition original =
-                @"input Obj {
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        InputObjectDefinition original =
+            @"input Obj {
                     field1: String
                 }";
 
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            InputObjectDefinition original = @"input Obj";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            InputObjectDefinition original = @"input Obj";
-
-            /* When */
-            var modified = original
-                .WithName("Renamed");
-
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
-
-        [Fact]
-        public void WithFields()
-        {
-            /* Given */
-            InputObjectDefinition original = @"input Obj";
-
-            /* When */
-            var modified = original
-                .WithFields(new List<InputValueDefinition>
-                {
-                    "field: Float!"
-                });
-
-            /* Then */
-            Assert.Null(original.Fields);
-            Assert.NotNull(modified.Fields);
-            Assert.NotEmpty(modified.Fields);
-        }
-
-        [Fact]
-        public void WithFields_Modify()
-        {
-            /* Given */
-            InputObjectDefinition original = @"input Obj { field: String }";
-
-            /* When */
-            var modified = original
-                .WithFields(original
-                    .Fields?
-                    .Select(originalField => originalField
-                        .WithDescription("Description"))
-                    .ToList()
-                );
-
-            /* Then */
-            Assert.NotNull(modified.Fields);
-            var field = Assert.Single(modified.Fields);
-            Assert.Equal("Description", field?.Description);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            InputObjectDefinition original = @"input Obj";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
-
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        InputObjectDefinition original = @"input Obj";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        InputObjectDefinition original = @"input Obj";
+
+        /* When */
+        var modified = original
+            .WithName("Renamed");
+
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.Equal("Renamed", modified.Name);
+    }
+
+    [Fact]
+    public void WithFields()
+    {
+        /* Given */
+        InputObjectDefinition original = @"input Obj";
+
+        /* When */
+        var modified = original
+            .WithFields(new List<InputValueDefinition>
+            {
+                "field: Float!"
+            });
+
+        /* Then */
+        Assert.Null(original.Fields);
+        Assert.NotNull(modified.Fields);
+        Assert.NotEmpty(modified.Fields);
+    }
+
+    [Fact]
+    public void WithFields_Modify()
+    {
+        /* Given */
+        InputObjectDefinition original = @"input Obj { field: String }";
+
+        /* When */
+        var modified = original
+            .WithFields(original
+                .Fields?
+                .Select(originalField => originalField
+                    .WithDescription("Description"))
+                .ToList()
+            );
+
+        /* Then */
+        Assert.NotNull(modified.Fields);
+        var field = Assert.Single(modified.Fields);
+        Assert.Equal("Description", field?.Description);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        InputObjectDefinition original = @"input Obj";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/InputValueDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/InputValueDefinitionFacts.cs
index 6e3a465c8..e2a01d056 100644
--- a/tests/graphql.language.tests/Nodes/InputValueDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/InputValueDefinitionFacts.cs
@@ -4,97 +4,96 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class InputValueDefinitionFacts
 {
-    public class InputValueDefinitionFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        InputValueDefinition original = Encoding.UTF8.GetBytes("field: ENUM")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.IsType<NamedType>(original.Type);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        InputValueDefinition original = "field: ENUM";
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.IsType<NamedType>(original.Type);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        InputValueDefinition original = "field: ENUM!";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            InputValueDefinition original = Encoding.UTF8.GetBytes("field: ENUM")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.IsType<NamedType>(original.Type);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            InputValueDefinition original = "field: ENUM";
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.IsType<NamedType>(original.Type);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            InputValueDefinition original = "field: ENUM!";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            InputValueDefinition original = "field: ENUM!";
-
-            /* When */
-            var modified = original
-                .WithName("b");
-
-            /* Then */
-            Assert.Equal("field", original.Name);
-            Assert.Equal("b", modified.Name);
-        }
-
-        [Fact]
-        public void WithType()
-        {
-            /* Given */
-            InputValueDefinition original = @"field: Int";
-
-            /* When */
-            var modified = original
-                .WithType("String!");
-
-            /* Then */
-            var nonNull = Assert.IsType<NonNullType>(modified.Type);
-            var named = Assert.IsType<NamedType>(nonNull.OfType);
-            Assert.Equal("String", named.Name);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            InputValueDefinition original = @"field: Int";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a", 
-                });
-
-            /* Then */
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Given */
+        InputValueDefinition original = "field: ENUM!";
+
+        /* When */
+        var modified = original
+            .WithName("b");
+
+        /* Then */
+        Assert.Equal("field", original.Name);
+        Assert.Equal("b", modified.Name);
+    }
+
+    [Fact]
+    public void WithType()
+    {
+        /* Given */
+        InputValueDefinition original = @"field: Int";
+
+        /* When */
+        var modified = original
+            .WithType("String!");
+
+        /* Then */
+        var nonNull = Assert.IsType<NonNullType>(modified.Type);
+        var named = Assert.IsType<NamedType>(nonNull.OfType);
+        Assert.Equal("String", named.Name);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        InputValueDefinition original = @"field: Int";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/InterfaceDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/InterfaceDefinitionFacts.cs
index 3d0a3b4f5..f3242093d 100644
--- a/tests/graphql.language.tests/Nodes/InterfaceDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/InterfaceDefinitionFacts.cs
@@ -5,148 +5,147 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class InterfaceDefinitionFacts
 {
-    public class InterfaceDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            InterfaceDefinition original =
-                Encoding.UTF8.GetBytes(@"interface Inf {
+        /* Given */
+        /* When */
+        InterfaceDefinition original =
+            Encoding.UTF8.GetBytes(@"interface Inf {
                     field1: String
                 }").AsReadOnlySpan();
 
-            /* Then */
-            Assert.Equal("Inf", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            InterfaceDefinition original =
-                @"interface Inf {
+        /* Then */
+        Assert.Equal("Inf", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        InterfaceDefinition original =
+            @"interface Inf {
                     field1: String
                 }";
 
-            /* Then */
-            Assert.Equal("Inf", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
-
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
-
-        [Fact]
-        public void WithFields()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf";
-
-            /* When */
-            var modified = original
-                .WithFields(new List<FieldDefinition>
-                {
-                    "field: String!"
-                });
-
-            /* Then */
-            Assert.Null(original.Fields);
-            Assert.NotNull(modified.Fields);
-            Assert.NotEmpty(modified.Fields);
-        }
-
-        [Fact]
-        public void WithFields_Modify()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf { field: String }";
-
-            /* When */
-            var modified = original
-                .WithFields(original
-                    .Fields?
-                    .Select(originalField => originalField
-                        .WithDescription("Description"))
-                    .ToList()
-                );
-
-            /* Then */
-            Assert.NotNull(modified.Fields);
-            var field = Assert.Single(modified.Fields);
-            Assert.Equal("Description", field?.Description);
-        }
-
-        [Fact]
-        public void WithInterfaces()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf";
-
-            /* When */
-            var modified = original
-                .WithInterfaces(new List<NamedType>
-                {
-                    "Inf1",
-                    "Inf2"
-                });
-
-            /* Then */
-            Assert.Null(original.Interfaces);
-            Assert.NotNull(modified.Interfaces);
-            Assert.Equal(2, modified.Interfaces?.Count);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            InterfaceDefinition original = @"interface Inf";
-
-            /* When */
-            var modified = original
-                .WithName("Renamed");
-
-            /* Then */
-            Assert.Equal("Inf", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
+        /* Then */
+        Assert.Equal("Inf", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
+    }
+
+    [Fact]
+    public void WithFields()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf";
+
+        /* When */
+        var modified = original
+            .WithFields(new List<FieldDefinition>
+            {
+                "field: String!"
+            });
+
+        /* Then */
+        Assert.Null(original.Fields);
+        Assert.NotNull(modified.Fields);
+        Assert.NotEmpty(modified.Fields);
+    }
+
+    [Fact]
+    public void WithFields_Modify()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf { field: String }";
+
+        /* When */
+        var modified = original
+            .WithFields(original
+                .Fields?
+                .Select(originalField => originalField
+                    .WithDescription("Description"))
+                .ToList()
+            );
+
+        /* Then */
+        Assert.NotNull(modified.Fields);
+        var field = Assert.Single(modified.Fields);
+        Assert.Equal("Description", field?.Description);
+    }
+
+    [Fact]
+    public void WithInterfaces()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf";
+
+        /* When */
+        var modified = original
+            .WithInterfaces(new List<NamedType>
+            {
+                "Inf1",
+                "Inf2"
+            });
+
+        /* Then */
+        Assert.Null(original.Interfaces);
+        Assert.NotNull(modified.Interfaces);
+        Assert.Equal(2, modified.Interfaces?.Count);
+    }
+
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        InterfaceDefinition original = @"interface Inf";
+
+        /* When */
+        var modified = original
+            .WithName("Renamed");
+
+        /* Then */
+        Assert.Equal("Inf", original.Name);
+        Assert.Equal("Renamed", modified.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/ObjectDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/ObjectDefinitionFacts.cs
index 7d01eaf27..d0a49c163 100644
--- a/tests/graphql.language.tests/Nodes/ObjectDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/ObjectDefinitionFacts.cs
@@ -5,148 +5,147 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class ObjectDefinitionFacts
 {
-    public class ObjectDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            ObjectDefinition original =
-                Encoding.UTF8.GetBytes(@"type Obj {
+        /* Given */
+        /* When */
+        ObjectDefinition original =
+            Encoding.UTF8.GetBytes(@"type Obj {
                     field1: String
                 }").AsReadOnlySpan();
 
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            ObjectDefinition original =
-                @"type Obj {
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        ObjectDefinition original =
+            @"type Obj {
                     field1: String
                 }";
 
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.NotNull(original.Fields);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj";
-
-            /* When */
-            var modified = original
-                .WithName("Renamed");
-
-            /* Then */
-            Assert.Equal("Obj", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
-
-        [Fact]
-        public void WithFields()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj";
-
-            /* When */
-            var modified = original
-                .WithFields(new List<FieldDefinition>
-                {
-                    "field: String!"
-                });
-
-            /* Then */
-            Assert.Null(original.Fields);
-            Assert.NotNull(modified.Fields);
-            Assert.NotEmpty(modified.Fields);
-        }
-
-        [Fact]
-        public void WithFields_Modify()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj { field: String }";
-
-            /* When */
-            var modified = original
-                .WithFields(original
-                    .Fields?
-                    .Select(originalField => originalField
-                        .WithDescription("Description"))
-                    .ToList()
-                );
-
-            /* Then */
-            Assert.NotNull(modified.Fields);
-            var field = Assert.Single(modified.Fields);
-            Assert.Equal("Description", field?.Description);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
-
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
-
-        [Fact]
-        public void WithInterfaces()
-        {
-            /* Given */
-            ObjectDefinition original = @"type Obj";
-
-            /* When */
-            var modified = original
-                .WithInterfaces(new List<NamedType>
-                {
-                    "Inf1",
-                    "Inf2"
-                });
-
-            /* Then */
-            Assert.Null(original.Interfaces);
-            Assert.NotNull(modified.Interfaces);
-            Assert.Equal(2, modified.Interfaces?.Count);
-        }
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.NotNull(original.Fields);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj";
+
+        /* When */
+        var modified = original
+            .WithName("Renamed");
+
+        /* Then */
+        Assert.Equal("Obj", original.Name);
+        Assert.Equal("Renamed", modified.Name);
+    }
+
+    [Fact]
+    public void WithFields()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj";
+
+        /* When */
+        var modified = original
+            .WithFields(new List<FieldDefinition>
+            {
+                "field: String!"
+            });
+
+        /* Then */
+        Assert.Null(original.Fields);
+        Assert.NotNull(modified.Fields);
+        Assert.NotEmpty(modified.Fields);
+    }
+
+    [Fact]
+    public void WithFields_Modify()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj { field: String }";
+
+        /* When */
+        var modified = original
+            .WithFields(original
+                .Fields?
+                .Select(originalField => originalField
+                    .WithDescription("Description"))
+                .ToList()
+            );
+
+        /* Then */
+        Assert.NotNull(modified.Fields);
+        var field = Assert.Single(modified.Fields);
+        Assert.Equal("Description", field?.Description);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
+    }
+
+    [Fact]
+    public void WithInterfaces()
+    {
+        /* Given */
+        ObjectDefinition original = @"type Obj";
+
+        /* When */
+        var modified = original
+            .WithInterfaces(new List<NamedType>
+            {
+                "Inf1",
+                "Inf2"
+            });
+
+        /* Then */
+        Assert.Null(original.Interfaces);
+        Assert.NotNull(modified.Interfaces);
+        Assert.Equal(2, modified.Interfaces?.Count);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/ScalarDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/ScalarDefinitionFacts.cs
index 027270349..11f507a6f 100644
--- a/tests/graphql.language.tests/Nodes/ScalarDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/ScalarDefinitionFacts.cs
@@ -4,81 +4,80 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class ScalarDefinitionFacts
 {
-    public class ScalarDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            ScalarDefinition original = Encoding.UTF8.GetBytes("scalar Name")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        ScalarDefinition original = Encoding.UTF8.GetBytes("scalar Name")
+            .AsReadOnlySpan();
 
-            /* Then */
-            Assert.Equal("Name", original.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            ScalarDefinition original = "scalar Name";
+        /* Then */
+        Assert.Equal("Name", original.Name);
+    }
 
-            /* Then */
-            Assert.Equal("Name", original.Name);
-        }
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        ScalarDefinition original = "scalar Name";
+
+        /* Then */
+        Assert.Equal("Name", original.Name);
+    }
 
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            ScalarDefinition original = @"scalar Name";
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        ScalarDefinition original = @"scalar Name";
 
-            /* When */
-            var modified = original
-                .WithDescription("Description");
+        /* When */
+        var modified = original
+            .WithDescription("Description");
 
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
 
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            ScalarDefinition original = @"scalar Name";
+    [Fact]
+    public void WithName()
+    {
+        /* Given */
+        ScalarDefinition original = @"scalar Name";
 
-            /* When */
-            var modified = original
-                .WithName("Renamed");
+        /* When */
+        var modified = original
+            .WithName("Renamed");
 
-            /* Then */
-            Assert.Equal("Name", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
+        /* Then */
+        Assert.Equal("Name", original.Name);
+        Assert.Equal("Renamed", modified.Name);
+    }
 
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            ScalarDefinition original = @"scalar Name";
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        ScalarDefinition original = @"scalar Name";
 
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
 
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/SchemaDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/SchemaDefinitionFacts.cs
index 214cea164..bfffe2276 100644
--- a/tests/graphql.language.tests/Nodes/SchemaDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/SchemaDefinitionFacts.cs
@@ -3,31 +3,30 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class SchemaDefinitionFacts
 {
-    public class SchemaDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            SchemaDefinition original = Encoding.UTF8.GetBytes("schema { query: Query }")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        SchemaDefinition original = Encoding.UTF8.GetBytes("schema { query: Query }")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("Query", original.Operations.Single().NamedType.Name);
+    }
 
-            /* Then */
-            Assert.Equal("Query", original.Operations.Single().NamedType.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            SchemaDefinition original = "schema { query: Query }";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        SchemaDefinition original = "schema { query: Query }";
 
-            /* Then */
-            Assert.Equal("Query", original.Operations.Single().NamedType.Name);
-        }
+        /* Then */
+        Assert.Equal("Query", original.Operations.Single().NamedType.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/SchemaExtensionFacts.cs b/tests/graphql.language.tests/Nodes/SchemaExtensionFacts.cs
index 76d1c8b1c..2197c629c 100644
--- a/tests/graphql.language.tests/Nodes/SchemaExtensionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/SchemaExtensionFacts.cs
@@ -3,31 +3,30 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class SchemaExtensionFacts
 {
-    public class SchemaExtensionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            SchemaExtension original = Encoding.UTF8.GetBytes("extend schema { query: Query }")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        SchemaExtension original = Encoding.UTF8.GetBytes("extend schema { query: Query }")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("Query", original.Operations?.Single().NamedType.Name);
+    }
 
-            /* Then */
-            Assert.Equal("Query", original.Operations?.Single().NamedType.Name);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            SchemaExtension original = "extend schema { query: Query }";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        SchemaExtension original = "extend schema { query: Query }";
 
-            /* Then */
-            Assert.Equal("Query", original.Operations?.Single().NamedType.Name);
-        }
+        /* Then */
+        Assert.Equal("Query", original.Operations?.Single().NamedType.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/TypeDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/TypeDefinitionFacts.cs
index bdee1721a..2ec56ec0c 100644
--- a/tests/graphql.language.tests/Nodes/TypeDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/TypeDefinitionFacts.cs
@@ -2,31 +2,30 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class TypeDefinitionFacts
 {
-    public class TypeDefinitionFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            TypeDefinition original = Encoding.UTF8.GetBytes("enum Enum")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        TypeDefinition original = Encoding.UTF8.GetBytes("enum Enum")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.IsType<EnumDefinition>(original);
+    }
 
-            /* Then */
-            Assert.IsType<EnumDefinition>(original);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            TypeDefinition original = "enum Enum";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        TypeDefinition original = "enum Enum";
 
-            /* Then */
-            Assert.IsType<EnumDefinition>(original);
-        }
+        /* Then */
+        Assert.IsType<EnumDefinition>(original);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/TypeFacts.cs b/tests/graphql.language.tests/Nodes/TypeFacts.cs
index ebf9b0a09..4bfd29935 100644
--- a/tests/graphql.language.tests/Nodes/TypeFacts.cs
+++ b/tests/graphql.language.tests/Nodes/TypeFacts.cs
@@ -2,31 +2,30 @@
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class TypeFacts
 {
-    public class TypeFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            TypeBase original = Encoding.UTF8.GetBytes("String")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        TypeBase original = Encoding.UTF8.GetBytes("String")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.IsType<NamedType>(original);
+    }
 
-            /* Then */
-            Assert.IsType<NamedType>(original);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            TypeBase original = "String";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        TypeBase original = "String";
 
-            /* Then */
-            Assert.IsType<NamedType>(original);
-        }
+        /* Then */
+        Assert.IsType<NamedType>(original);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/TypeSystemDocumentFacts.cs b/tests/graphql.language.tests/Nodes/TypeSystemDocumentFacts.cs
index 38ac1d130..0e5478744 100644
--- a/tests/graphql.language.tests/Nodes/TypeSystemDocumentFacts.cs
+++ b/tests/graphql.language.tests/Nodes/TypeSystemDocumentFacts.cs
@@ -2,39 +2,38 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class TypeSystemDocumentFacts
 {
-    public class TypeSystemDocumentFacts
+    [Fact]
+    public void FromBytes()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            TypeSystemDocument original = Encoding.UTF8.GetBytes("scalar Scalar extend scalar Scalar @a")
-                .AsReadOnlySpan();
+        /* Given */
+        /* When */
+        TypeSystemDocument original = Encoding.UTF8.GetBytes("scalar Scalar extend scalar Scalar @a")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.NotNull(original.TypeDefinitions);
+        Assert.Single(original.TypeDefinitions);
 
-            /* Then */
-            Assert.NotNull(original.TypeDefinitions);
-            Assert.Single(original.TypeDefinitions);
+        Assert.NotNull(original.TypeExtensions);
+        Assert.Single(original.TypeExtensions);
+    }
 
-            Assert.NotNull(original.TypeExtensions);
-            Assert.Single(original.TypeExtensions);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            TypeSystemDocument original = "scalar Scalar extend scalar Scalar @a";
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        TypeSystemDocument original = "scalar Scalar extend scalar Scalar @a";
 
-            /* Then */
-            Assert.NotNull(original.TypeDefinitions);
-            Assert.Single(original.TypeDefinitions);
+        /* Then */
+        Assert.NotNull(original.TypeDefinitions);
+        Assert.Single(original.TypeDefinitions);
 
-            Assert.NotNull(original.TypeExtensions);
-            Assert.Single(original.TypeExtensions);
-        }
+        Assert.NotNull(original.TypeExtensions);
+        Assert.Single(original.TypeExtensions);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Nodes/UnionDefinitionFacts.cs b/tests/graphql.language.tests/Nodes/UnionDefinitionFacts.cs
index 06f9fa73a..9816fda54 100644
--- a/tests/graphql.language.tests/Nodes/UnionDefinitionFacts.cs
+++ b/tests/graphql.language.tests/Nodes/UnionDefinitionFacts.cs
@@ -4,102 +4,101 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Nodes
+namespace Tanka.GraphQL.Language.Tests.Nodes;
+
+public class UnionDefinitionFacts
 {
-    public class UnionDefinitionFacts
+    [Fact]
+    public void FromBytes()
+    {
+        /* Given */
+        /* When */
+        UnionDefinition original = Encoding.UTF8.GetBytes("union Name = MemberA | MemberB")
+            .AsReadOnlySpan();
+
+        /* Then */
+        Assert.Equal("Name", original.Name);
+        Assert.Equal(2, original.Members?.Count);
+    }
+
+    [Fact]
+    public void FromString()
+    {
+        /* Given */
+        /* When */
+        UnionDefinition original = "union Name = MemberA | MemberB";
+
+        /* Then */
+        Assert.Equal("Name", original.Name);
+        Assert.Equal(2, original.Members?.Count);
+    }
+
+    [Fact]
+    public void WithDescription()
+    {
+        /* Given */
+        UnionDefinition original = "union Name = MemberA | MemberB";
+
+        /* When */
+        var modified = original
+            .WithDescription("Description");
+
+        /* Then */
+        Assert.Null(original.Description);
+        Assert.Equal("Description", modified.Description);
+    }
+
+    [Fact]
+    public void WithName()
     {
-        [Fact]
-        public void FromBytes()
-        {
-            /* Given */
-            /* When */
-            UnionDefinition original = Encoding.UTF8.GetBytes("union Name = MemberA | MemberB")
-                .AsReadOnlySpan();
-
-            /* Then */
-            Assert.Equal("Name", original.Name);
-            Assert.Equal(2, original.Members?.Count);
-        }
-        
-        [Fact]
-        public void FromString()
-        {
-            /* Given */
-            /* When */
-            UnionDefinition original = "union Name = MemberA | MemberB";
-
-            /* Then */
-            Assert.Equal("Name", original.Name);
-            Assert.Equal(2, original.Members?.Count);
-        }
-
-        [Fact]
-        public void WithDescription()
-        {
-            /* Given */
-            UnionDefinition original = "union Name = MemberA | MemberB";
-
-            /* When */
-            var modified = original
-                .WithDescription("Description");
-
-            /* Then */
-            Assert.Null(original.Description);
-            Assert.Equal("Description", modified.Description);
-        }
-
-        [Fact]
-        public void WithName()
-        {
-            /* Given */
-            UnionDefinition original = "union Name = MemberA | MemberB";
-
-            /* When */
-            var modified = original
-                .WithName("Renamed");
-
-            /* Then */
-            Assert.Equal("Name", original.Name);
-            Assert.Equal("Renamed", modified.Name);
-        }
-
-        [Fact]
-        public void WithDirectives()
-        {
-            /* Given */
-            UnionDefinition original = "union Name = MemberA | MemberB";
-
-            /* When */
-            var modified = original
-                .WithDirectives(new List<Directive>
-                {
-                    "@a"
-                });
-
-            /* Then */
-            Assert.Null(original.Directives);
-            Assert.NotNull(modified.Directives);
-            var a = Assert.Single(modified.Directives);
-            Assert.Equal("a", a?.Name);
-        }
-
-        [Fact]
-        public void WithMembers()
-        {
-            /* Given */
-            UnionDefinition original = "union Name = MemberA | MemberB";
-
-            /* When */
-            var modified = original
-                .WithMembers(new List<NamedType>
-                {
-                    "a"
-                });
-
-            /* Then */
-            Assert.NotNull(modified.Members);
-            var a = Assert.Single(modified.Members);
-            Assert.Equal("a", a?.Name);
-        }
+        /* Given */
+        UnionDefinition original = "union Name = MemberA | MemberB";
+
+        /* When */
+        var modified = original
+            .WithName("Renamed");
+
+        /* Then */
+        Assert.Equal("Name", original.Name);
+        Assert.Equal("Renamed", modified.Name);
+    }
+
+    [Fact]
+    public void WithDirectives()
+    {
+        /* Given */
+        UnionDefinition original = "union Name = MemberA | MemberB";
+
+        /* When */
+        var modified = original
+            .WithDirectives(new List<Directive>
+            {
+                "@a"
+            });
+
+        /* Then */
+        Assert.Null(original.Directives);
+        Assert.NotNull(modified.Directives);
+        var a = Assert.Single(modified.Directives);
+        Assert.Equal("a", a?.Name);
+    }
+
+    [Fact]
+    public void WithMembers()
+    {
+        /* Given */
+        UnionDefinition original = "union Name = MemberA | MemberB";
+
+        /* When */
+        var modified = original
+            .WithMembers(new List<NamedType>
+            {
+                "a"
+            });
+
+        /* Then */
+        Assert.NotNull(modified.Members);
+        var a = Assert.Single(modified.Members);
+        Assert.Equal("a", a?.Name);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/ParserFacts.cs b/tests/graphql.language.tests/ParserFacts.cs
index 526db522e..cad0ca081 100644
--- a/tests/graphql.language.tests/ParserFacts.cs
+++ b/tests/graphql.language.tests/ParserFacts.cs
@@ -1,20 +1,18 @@
 using System;
 using System.Buffers.Text;
-using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
-using Type = System.Type;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class ParserFacts
 {
-    public class ParserFacts
+    [Fact]
+    public void ExecutableDocument()
     {
-        [Fact]
-        public void ExecutableDocument()
-        {
-            /* Given */
-            var source = @"query {
+        /* Given */
+        var source = @"query {
                                 field
                             }
                             mutation {
@@ -25,65 +23,65 @@ public void ExecutableDocument()
                             }
                             ";
 
-            var sut = Parser.Create(source);
-            
-            /* When */
-            var actual = sut.ParseExecutableDocument();
-
-            /* Then */
-            Assert.Equal(3, actual.OperationDefinitions?.Count);
-        }
-
-        [Fact]
-        public void Document_FragmentDefinition()
-        {
-            /* Given */
-            var source = @"fragment address on Person { field }";
-
-            var sut = Parser.Create(source);
-            
-            /* When */
-            var actual = sut.ParseExecutableDocument();
-
-            /* Then */
-            Assert.Equal(1, actual.FragmentDefinitions?.Count);
-        }
-
-        [Fact]
-        public void OperationDefinition_Empty()
-        {
-            /* Given */
-            var source = "query { }";
-
-            var sut = Parser.Create(source);
-            
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
-
-            /* Then */
-            Assert.Equal(OperationType.Query, actual.Operation);
-        }
-
-        [Fact]
-        public void OperationDefinition_Short_Empty()
-        {
-            /* Given */
-            var source = "{ }";
-
-            var sut = Parser.Create(source);
-            
-            /* When */
-            var actual = sut.ParseShortOperationDefinition();
-
-            /* Then */
-            Assert.Equal(OperationType.Query, actual.Operation);
-        }
-
-        [Fact]
-        public void OperationDefinition_Short_Selection()
-        {
-            /* Given */
-            var source = @"{ 
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseExecutableDocument();
+
+        /* Then */
+        Assert.Equal(3, actual.OperationDefinitions?.Count);
+    }
+
+    [Fact]
+    public void Document_FragmentDefinition()
+    {
+        /* Given */
+        var source = @"fragment address on Person { field }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseExecutableDocument();
+
+        /* Then */
+        Assert.Equal(1, actual.FragmentDefinitions?.Count);
+    }
+
+    [Fact]
+    public void OperationDefinition_Empty()
+    {
+        /* Given */
+        var source = "query { }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
+
+        /* Then */
+        Assert.Equal(OperationType.Query, actual.Operation);
+    }
+
+    [Fact]
+    public void OperationDefinition_Short_Empty()
+    {
+        /* Given */
+        var source = "{ }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseShortOperationDefinition();
+
+        /* Then */
+        Assert.Equal(OperationType.Query, actual.Operation);
+    }
+
+    [Fact]
+    public void OperationDefinition_Short_Selection()
+    {
+        /* Given */
+        var source = @"{ 
                             field
                             field2 {
                                 ... on Human {
@@ -92,805 +90,804 @@ ... on Human {
                             }
                            }";
 
-            var sut = Parser.Create(source);
-            
-            /* When */
-            var actual = sut.ParseShortOperationDefinition();
+        var sut = Parser.Create(source);
 
-            /* Then */
-            Assert.Equal(2, actual.SelectionSet.Selections.Count);
-        }
+        /* When */
+        var actual = sut.ParseShortOperationDefinition();
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_FieldSelection()
-        {
-            /* Given */
-            var source = "query { field }";
+        /* Then */
+        Assert.Equal(2, actual.SelectionSet.Selections.Count);
+    }
+
+    [Fact]
+    public void OperationDefinition_SelectionSet_FieldSelection()
+    {
+        /* Given */
+        var source = "query { field }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+    }
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_InlineFragment()
-        {
-            /* Given */
-            var source = @"query {  
+    [Fact]
+    public void OperationDefinition_SelectionSet_InlineFragment()
+    {
+        /* Given */
+        var source = @"query {  
                             ... on Human {
                                 field
                             }
                          }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-            Assert.IsType<InlineFragment>(actual.SelectionSet.Selections.Single());
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+        Assert.IsType<InlineFragment>(actual.SelectionSet.Selections.Single());
+    }
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_FragmentSpread()
-        {
-            /* Given */
-            var source = @"query {  
+    [Fact]
+    public void OperationDefinition_SelectionSet_FragmentSpread()
+    {
+        /* Given */
+        var source = @"query {  
                             ...fragmentName
                          }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-            Assert.IsType<FragmentSpread>(actual.SelectionSet.Selections.Single());
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+        Assert.IsType<FragmentSpread>(actual.SelectionSet.Selections.Single());
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Before()
-        {
-            /* Given */
-            var source = 
-                    @"# comment 
+    [Fact]
+    public void OperationDefinition_With_Comment_Before()
+    {
+        /* Given */
+        var source =
+            @"# comment 
                     query { 
                         field 
                     }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Before_Selection()
-        {
-            /* Given */
-            var source = 
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_Before_Selection()
+    {
+        /* Given */
+        var source =
+            @"query {
                         # comment 
                         field 
                     }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_After_Selection()
-        {
-            /* Given */
-            var source = 
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_After_Selection()
+    {
+        /* Given */
+        var source =
+            @"query {
                         field 
                         # comment 
                     }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
 
-            /* Then */
-            Assert.Single(actual.SelectionSet.Selections);
-        }
+        /* Then */
+        Assert.Single(actual.SelectionSet.Selections);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Between_Selections()
-        {
-            /* Given */
-            var source = 
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_Between_Selections()
+    {
+        /* Given */
+        var source =
+            @"query {
                         field1
                         # comment
                         field2
                     }";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
+
+        /* Then */
+        Assert.True(actual.SelectionSet.Selections.Count == 2);
+    }
+
+    [Fact]
+    public void OperationDefinition_VariableDefinitions()
+    {
+        /* Given */
+        var source =
+            @"query ($name: String!, $version: Float!) {}";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
+
+        /* Then */
+        Assert.Equal(2, actual.VariableDefinitions?.Count);
+    }
+
+    [Fact]
+    public void OperationDefinition_Directives()
+    {
+        /* Given */
+        var source =
+            @"query @a @b(a: -0, b:-54.0) {}";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseOperationDefinition(OperationType.Query);
+
+        /* Then */
+        Assert.Equal(2, actual.Directives?.Count);
+    }
+
+    [Fact]
+    public void FragmentDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("fragment name on Human { field }");
+
+        /* When */
+        var fragmentDefinition = sut.ParseFragmentDefinition();
+
+        /* Then */
+        Assert.Equal("name", fragmentDefinition.FragmentName);
+    }
+
+    [Fact]
+    public void FragmentDefinition_TypeCondition()
+    {
+        /* Given */
+        var sut = Parser.Create("fragment name on Human { field }");
+
+        /* When */
+        var fragmentDefinition = sut.ParseFragmentDefinition();
+
+        /* Then */
+        Assert.Equal("Human", fragmentDefinition.TypeCondition.Name);
+    }
+
+    [Fact]
+    public void FragmentDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("fragment name on Human @a @b { field }");
+
+        /* When */
+        var fragmentDefinition = sut.ParseFragmentDefinition();
+
+        /* Then */
+        Assert.Equal(2, fragmentDefinition.Directives.Count);
+    }
+
+    [Fact]
+    public void FragmentDefinition_SelectionSet()
+    {
+        /* Given */
+        var sut = Parser.Create("fragment name on Human @a @b { field }");
+
+        /* When */
+        var fragmentDefinition = sut.ParseFragmentDefinition();
+
+        /* Then */
+        Assert.Equal(1, fragmentDefinition.SelectionSet.Selections.Count);
+    }
+
+    [Fact]
+    public void Directive()
+    {
+        /* Given */
+        var sut = Parser.Create("@name");
+
+        /* When */
+        var directive = sut.ParseDirective();
+
+        /* Then */
+        Assert.Equal("name", directive.Name);
+    }
+
+    [Fact]
+    public void Directive_Arguments()
+    {
+        /* Given */
+        var sut = Parser.Create("@name(a: 1, b: true, c: null)");
+
+        /* When */
+        var directive = sut.ParseDirective();
+
+        /* Then */
+        Assert.Equal(3, directive.Arguments?.Count);
+    }
+
+    [Fact]
+    public void Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("@name(a: 1, b: true, c: null) @version {");
+
+        /* When */
+        var directives = sut.ParseOptionalDirectives();
+
+        /* Then */
+        Assert.Equal(2, directives?.Count);
+    }
+
+    [Theory]
+    [InlineData("name: [1,2,3]", "name", typeof(ListValue))]
+    [InlineData("another: -123.123", "another", typeof(FloatValue))]
+    public void Argument(string source, string name, Type valueType)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var argument = sut.ParseArgument();
+
+        /* Then */
+        Assert.Equal(name, argument.Name);
+        Assert.IsType(valueType, argument.Value);
+    }
+
+    [Fact]
+    public void Arguments()
+    {
+        /* Given */
+        var sut = Parser.Create("(arg1: 123, arg2: -32, arg3: $variable)");
+
+        /* When */
+        var arguments = sut.ParseOptionalArguments();
+
+        /* Then */
+        Assert.Equal(3, arguments?.Count);
+    }
+
+    [Fact]
+    public void FieldSelection()
+    {
+        /* Given */
+        var source = "field";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseFieldSelection();
+
+        /* Then */
+        Assert.Equal("field", actual.Name);
+    }
+
+    [Fact]
+    public void FragmentSpread()
+    {
+        /* Given */
+        var source = "...name";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseFragmentSpread();
+
+        /* Then */
+        Assert.Equal("name", actual.FragmentName);
+    }
+
+    [Fact]
+    public void FragmentSpread_Directives()
+    {
+        /* Given */
+        var source = "...name @a @b @c";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseFragmentSpread();
+
+        /* Then */
+        Assert.Equal(3, actual.Directives?.Count);
+    }
+
+    [Fact]
+    public void InlineFragment()
+    {
+        /* Given */
+        var source = "... on Human {}";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseInlineFragment();
+
+        /* Then */
+        Assert.Equal("Human", actual.TypeCondition?.Name);
+    }
+
+    [Fact]
+    public void InlineFragment_Directives()
+    {
+        /* Given */
+        var source = "... on Human @a @b {}";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseInlineFragment();
+
+        /* Then */
+        Assert.Equal(2, actual.Directives?.Count);
+    }
+
+    [Fact]
+    public void InlineFragment_SelectionSet()
+    {
+        /* Given */
+        var source = "... on Human { field }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseInlineFragment();
+
+        /* Then */
+        Assert.Equal(1, actual.SelectionSet.Selections.Count);
+    }
+
+    [Fact]
+    public void InlineFragment_NoTypeCondition_SelectionSet()
+    {
+        /* Given */
+        var source = "... { field }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseInlineFragment();
+
+        /* Then */
+        Assert.Equal(1, actual.SelectionSet.Selections.Count);
+    }
+
+    [Fact]
+    public void FieldSelection_with_Alias()
+    {
+        /* Given */
+        var source = "alias: field";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseFieldSelection();
+
+        /* Then */
+        Assert.Equal("alias", actual.Alias);
+        Assert.Equal("field", actual.Name);
+    }
+
+    [Fact]
+    public void FieldSelection_SelectionSet()
+    {
+        /* Given */
+        var source = "field { subField }";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseFieldSelection();
+
+        /* Then */
+        Assert.NotNull(actual.SelectionSet?.Selections);
+        Assert.NotEmpty(actual.SelectionSet.Selections);
+    }
+
+    [Fact]
+    public void VariableDefinitions()
+    {
+        /* Given */
+        var source = @"($name: String! = ""tanka"", $Version: Float = 2.0)";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var variableDefinitions = sut.ParseVariableDefinitions();
+
+        /* Then */
+        Assert.Equal(2, variableDefinitions.Count);
+    }
+
+    [Theory]
+    [InlineData("$variable: Int", "variable", "Int")]
+    [InlineData("$variable2: String", "variable2", "String")]
+    public void VariableDefinition(string source, string name, string typeName)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseVariableDefinition();
+
+        /* Then */
+        Assert.Equal(name, actual.Variable.Name);
+        var namedType = Assert.IsType<NamedType>(actual.Type);
+        Assert.Equal(typeName, namedType.Name);
+    }
+
+    [Theory]
+    [InlineData("$variable: Int=123", typeof(IntValue))]
+    [InlineData(@"$variable2: String = ""Test""", typeof(StringValue))]
+    public void VariableDefinition_DefaultValue(string source, Type expectedDefaultValueType)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var actual = sut.ParseVariableDefinition();
+
+        /* Then */
+        Assert.IsType(expectedDefaultValueType, actual.DefaultValue?.Value);
+    }
+
+    [Fact]
+    public void Type_NamedType()
+    {
+        /* Given */
+        var source = "TypeName";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var type = sut.ParseType();
+
+        /* Then */
+        Assert.NotNull(type);
+        Assert.IsType<NamedType>(type);
+        Assert.Equal("TypeName", ((NamedType)type).Name);
+    }
+
+    [Fact]
+    public void Type_NonNullOf_NamedType()
+    {
+        /* Given */
+        var source = "TypeName!";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var type = sut.ParseType();
+
+        /* Then */
+        Assert.NotNull(type);
+        Assert.IsType<NonNullType>(type);
+        Assert.IsType<NamedType>(((NonNullType)type).OfType);
+    }
+
+    [Fact]
+    public void Type_ListOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName]";
+
+        var sut = Parser.Create(source);
+
+        /* When */
+        var type = sut.ParseType();
+
+        /* Then */
+        Assert.NotNull(type);
+        Assert.IsType<ListType>(type);
+        Assert.IsType<NamedType>(((ListType)type).OfType);
+    }
+
+    [Fact]
+    public void Type_NonNullOf_ListOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName]!";
+
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var type = sut.ParseType();
 
-            /* Then */
-            Assert.True(actual.SelectionSet.Selections.Count == 2);
-        }
+        /* Then */
+        Assert.NotNull(type);
+        Assert.IsType<NonNullType>(type);
+        Assert.IsType<ListType>(((NonNullType)type).OfType);
+    }
 
-        [Fact]
-        public void OperationDefinition_VariableDefinitions()
-        {
-            /* Given */
-            var source = 
-                @"query ($name: String!, $version: Float!) {}";
+    [Fact]
+    public void Type_ListOf_NonNullOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName!]";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
+        /* When */
+        var type = sut.ParseType();
 
-            /* Then */
-            Assert.Equal(2, actual.VariableDefinitions?.Count);
-        }
+        /* Then */
+        Assert.NotNull(type);
+        Assert.IsType<ListType>(type);
+        Assert.IsType<NonNullType>(((ListType)type).OfType);
+    }
 
-        [Fact]
-        public void OperationDefinition_Directives()
-        {
-            /* Given */
-            var source = 
-                @"query @a @b(a: -0, b:-54.0) {}";
+    [Fact]
+    public void Type_NonNull_ListOf_NonNullOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName!]!";
 
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseOperationDefinition(OperationType.Query);
-
-            /* Then */
-            Assert.Equal(2, actual.Directives?.Count);
-        }
-
-        [Fact]
-        public void FragmentDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("fragment name on Human { field }");
-
-            /* When */
-            var fragmentDefinition = sut.ParseFragmentDefinition();
-
-            /* Then */
-            Assert.Equal("name", fragmentDefinition.FragmentName);
-        }
-
-        [Fact]
-        public void FragmentDefinition_TypeCondition()
-        {
-            /* Given */
-            var sut = Parser.Create("fragment name on Human { field }");
-
-            /* When */
-            var fragmentDefinition = sut.ParseFragmentDefinition();
-
-            /* Then */
-            Assert.Equal("Human", fragmentDefinition.TypeCondition.Name);
-        }
-
-        [Fact]
-        public void FragmentDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("fragment name on Human @a @b { field }");
-
-            /* When */
-            var fragmentDefinition = sut.ParseFragmentDefinition();
-
-            /* Then */
-            Assert.Equal(2, fragmentDefinition.Directives.Count);
-        }
-
-        [Fact]
-        public void FragmentDefinition_SelectionSet()
-        {
-            /* Given */
-            var sut = Parser.Create("fragment name on Human @a @b { field }");
-
-            /* When */
-            var fragmentDefinition = sut.ParseFragmentDefinition();
-
-            /* Then */
-            Assert.Equal(1, fragmentDefinition.SelectionSet.Selections.Count);
-        }
-
-        [Fact]
-        public void Directive()
-        {
-            /* Given */
-            var sut = Parser.Create("@name");
-
-            /* When */
-            var directive = sut.ParseDirective();
-
-            /* Then */
-            Assert.Equal("name", directive.Name);
-        }
-
-        [Fact]
-        public void Directive_Arguments()
-        {
-            /* Given */
-            var sut = Parser.Create("@name(a: 1, b: true, c: null)");
-
-            /* When */
-            var directive = sut.ParseDirective();
-
-            /* Then */
-            Assert.Equal(3, directive.Arguments?.Count);
-        }
-
-        [Fact]
-        public void Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("@name(a: 1, b: true, c: null) @version {");
-
-            /* When */
-            var directives = sut.ParseOptionalDirectives();
-
-            /* Then */
-            Assert.Equal(2, directives?.Count);
-        }
-
-        [Theory]
-        [InlineData("name: [1,2,3]", "name", typeof(ListValue))]
-        [InlineData("another: -123.123", "another", typeof(FloatValue))]
-        public void Argument(string source, string name, Type valueType)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var argument = sut.ParseArgument();
-
-            /* Then */
-            Assert.Equal(name, argument.Name);
-            Assert.IsType(valueType, argument.Value);
-        }
-
-        [Fact]
-        public void Arguments()
-        {
-            /* Given */
-            var sut = Parser.Create("(arg1: 123, arg2: -32, arg3: $variable)");
-
-            /* When */
-            var arguments = sut.ParseOptionalArguments();
-
-            /* Then */
-            Assert.Equal(3, arguments?.Count);
-        }
-        
-        [Fact]
-        public void FieldSelection()
-        {
-            /* Given */
-            var source = "field";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseFieldSelection();
-
-            /* Then */
-            Assert.Equal("field", actual.Name);
-        }
-
-        [Fact]
-        public void FragmentSpread()
-        {
-            /* Given */
-            var source = "...name";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseFragmentSpread();
-
-            /* Then */
-            Assert.Equal("name", actual.FragmentName);
-        }
-
-        [Fact]
-        public void FragmentSpread_Directives()
-        {
-            /* Given */
-            var source = "...name @a @b @c";
-
-            var sut = Parser.Create(source);
+        /* When */
+        var type = sut.ParseType();
 
-            /* When */
-            var actual = sut.ParseFragmentSpread();
-
-            /* Then */
-            Assert.Equal(3, actual.Directives?.Count);
-        }
+        /* Then */
+        Assert.NotNull(type);
+        var nonNullOf = Assert.IsType<NonNullType>(type);
+        var listOf = Assert.IsType<ListType>(nonNullOf.OfType);
+        var nonNullItemOf = Assert.IsType<NonNullType>(listOf.OfType);
+        Assert.IsType<NamedType>(nonNullItemOf.OfType);
+    }
 
-        [Fact]
-        public void InlineFragment()
-        {
-            /* Given */
-            var source = "... on Human {}";
+    [Theory]
+    [InlineData("123", 123)]
+    [InlineData("-123", -123)]
+    [InlineData("0", 0)]
+    public void Value_Int(string source, int expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
 
-            var sut = Parser.Create(source);
+        /* When */
+        var value = sut.ParseValue();
 
-            /* When */
-            var actual = sut.ParseInlineFragment();
-
-            /* Then */
-            Assert.Equal("Human", actual.TypeCondition?.Name);
-        }
-
-        [Fact]
-        public void InlineFragment_Directives()
-        {
-            /* Given */
-            var source = "... on Human @a @b {}";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseInlineFragment();
-
-            /* Then */
-            Assert.Equal(2, actual.Directives?.Count);
-        }
-
-        [Fact]
-        public void InlineFragment_SelectionSet()
-        {
-            /* Given */
-            var source = "... on Human { field }";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseInlineFragment();
-
-            /* Then */
-            Assert.Equal(1, actual.SelectionSet.Selections.Count);
-        }
-
-        [Fact]
-        public void InlineFragment_NoTypeCondition_SelectionSet()
-        {
-            /* Given */
-            var source = "... { field }";
+        /* Then */
+        var intValue = Assert.IsType<IntValue>(value);
+        Assert.Equal(expected, intValue.Value);
+    }
 
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseInlineFragment();
+    [Theory]
+    [InlineData("123.123", 123.123)]
+    [InlineData("-123.123", -123.123)]
+    [InlineData("123e20", 123e20)]
+    public void Value_Float(string source, double expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
 
-            /* Then */
-            Assert.Equal(1, actual.SelectionSet.Selections.Count);
-        }
+        /* When */
+        var value = sut.ParseValue();
 
-        [Fact]
-        public void FieldSelection_with_Alias()
-        {
-            /* Given */
-            var source = "alias: field";
+        /* Then */
+        var floatValue = Assert.IsType<FloatValue>(value);
+        Assert.True(Utf8Parser.TryParse(floatValue.Value.Span, out double d, out _));
+        Assert.Equal(expected, d);
+    }
 
-            var sut = Parser.Create(source);
+    [Theory]
+    [InlineData("\"test\"", "test")]
+    [InlineData("\"test test\"", "test test")]
+    [InlineData("\"test_test\"", "test_test")]
+    public void Value_String(string source, string expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = sut.ParseFieldSelection();
-
-            /* Then */
-            Assert.Equal("alias", actual.Alias);
-            Assert.Equal("field", actual.Name);
-        }
+        /* When */
+        var value = sut.ParseValue();
 
-        [Fact]
-        public void FieldSelection_SelectionSet()
-        {
-            /* Given */
-            var source = "field { subField }";
-
-            var sut = Parser.Create(source);
+        /* Then */
+        var stringValue = Assert.IsType<StringValue>(value);
+        Assert.Equal(expected, stringValue);
+    }
 
-            /* When */
-            var actual = sut.ParseFieldSelection();
-
-            /* Then */
-            Assert.NotNull(actual.SelectionSet?.Selections);
-            Assert.NotEmpty(actual.SelectionSet.Selections);
-        }
-
-        [Fact]
-        public void VariableDefinitions()
-        {
-            /* Given */
-            var source = @"($name: String! = ""tanka"", $Version: Float = 2.0)";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var variableDefinitions = sut.ParseVariableDefinitions();
-
-            /* Then */
-            Assert.Equal(2, variableDefinitions.Count);
-        }
-
-        [Theory]
-        [InlineData("$variable: Int", "variable", "Int")]
-        [InlineData("$variable2: String", "variable2", "String")]
-        public void VariableDefinition(string source, string name, string typeName)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseVariableDefinition();
-
-            /* Then */
-            Assert.Equal(name, actual.Variable.Name);
-            var namedType = Assert.IsType<NamedType>(actual.Type);
-            Assert.Equal(typeName, namedType.Name);
-        }
-
-        [Theory]
-        [InlineData("$variable: Int=123", typeof(IntValue))]
-        [InlineData(@"$variable2: String = ""Test""", typeof(StringValue))]
-        public void VariableDefinition_DefaultValue(string source, Type expectedDefaultValueType)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var actual = sut.ParseVariableDefinition();
-
-            /* Then */
-            Assert.IsType(expectedDefaultValueType, actual.DefaultValue?.Value);
-        }
-
-        [Fact]
-        public void Type_NamedType()
-        {
-            /* Given */
-            var source = "TypeName";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            Assert.IsType<NamedType>(type);
-            Assert.Equal("TypeName", ((NamedType)type).Name);
-        }
-
-        [Fact]
-        public void Type_NonNullOf_NamedType()
-        {
-            /* Given */
-            var source = "TypeName!";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            Assert.IsType<NonNullType>(type);
-            Assert.IsType<NamedType>(((NonNullType)type).OfType);
-        }
-
-        [Fact]
-        public void Type_ListOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName]";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            Assert.IsType<ListType>(type);
-            Assert.IsType<NamedType>(((ListType)type).OfType);
-        }
-
-        [Fact]
-        public void Type_NonNullOf_ListOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName]!";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            Assert.IsType<NonNullType>(type);
-            Assert.IsType<ListType>(((NonNullType)type).OfType);
-        }
-
-        [Fact]
-        public void Type_ListOf_NonNullOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName!]";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            Assert.IsType<ListType>(type);
-            Assert.IsType<NonNullType>(((ListType)type).OfType);
-        }
-
-        [Fact]
-        public void Type_NonNull_ListOf_NonNullOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName!]!";
-
-            var sut = Parser.Create(source);
-
-            /* When */
-            var type = sut.ParseType();
-
-            /* Then */
-            Assert.NotNull(type);
-            var nonNullOf = Assert.IsType<NonNullType>(type);
-            var listOf = Assert.IsType<ListType>(nonNullOf.OfType);
-            var nonNullItemOf = Assert.IsType<NonNullType>(listOf.OfType);
-            Assert.IsType<NamedType>(nonNullItemOf.OfType);
-        }
-
-        [Theory]
-        [InlineData("123", 123)]
-        [InlineData("-123", -123)]
-        [InlineData("0", 0)]
-        public void Value_Int(string source, int expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var intValue = Assert.IsType<IntValue>(value);
-            Assert.Equal(expected, intValue.Value);
-        }
-
-        [Theory]
-        [InlineData("123.123", 123.123)]
-        [InlineData("-123.123", -123.123)]
-        [InlineData("123e20", 123e20)]
-        public void Value_Float(string source, double expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var floatValue = Assert.IsType<FloatValue>(value);
-            Assert.True(Utf8Parser.TryParse(floatValue.Value.Span, out double d, out _));
-            Assert.Equal(expected, d);
-        }
-
-        [Theory]
-        [InlineData("\"test\"", "test")]
-        [InlineData("\"test test\"", "test test")]
-        [InlineData("\"test_test\"", "test_test")]
-        public void Value_String(string source, string expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var stringValue = Assert.IsType<StringValue>(value);
-            Assert.Equal(expected, stringValue);
-        }
-
-        [Theory]
-        [InlineData("\"\"\"test\"\"\"", "test")]
-        [InlineData("\"\"\"test test\"\"\"", "test test")]
-        [InlineData("\"\"\"test_test\"\"\"", "test_test")]
-        [InlineData(@"""""""
+    [Theory]
+    [InlineData("\"\"\"test\"\"\"", "test")]
+    [InlineData("\"\"\"test test\"\"\"", "test test")]
+    [InlineData("\"\"\"test_test\"\"\"", "test_test")]
+    [InlineData(@"""""""
                         test
-                      """"""", 
-                    "test")]
-        [InlineData(@"""""""
+                      """"""",
+        "test")]
+    [InlineData(@"""""""
                       Cat
                         - not a dog
                         - not a goat
 
                       Might be part demon.
 
-                      """"""", 
-            "Cat\n  - not a dog\n  - not a goat\n\nMight be part demon.")]
-        public void Value_BlockString(string source, string expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var blockStringValue = Assert.IsType<StringValue>(value);
-            Assert.Equal(expected, blockStringValue);
-        }
-
-        [Fact]
-        public void Value_BlockString_AsDescription()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+                      """"""",
+        "Cat\n  - not a dog\n  - not a goat\n\nMight be part demon.")]
+    public void Value_BlockString(string source, string expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var blockStringValue = Assert.IsType<StringValue>(value);
+        Assert.Equal(expected, blockStringValue);
+    }
+
+    [Fact]
+    public void Value_BlockString_AsDescription()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 Description
 """"""
 ");
-            /* When */
-            var value = sut.ParseOptionalDescription();
-
-            /* Then */
-            Assert.Equal("Description", value);
-        }
-
-        [Fact]
-        public void Value_Null()
-        {
-            /* Given */
-            var sut = Parser.Create("null");
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            Assert.IsType<NullValue>(value);
-        }
-
-        [Theory]
-        [InlineData("true", true)]
-        [InlineData("false", false)]
-        [InlineData("True", true)]
-        [InlineData("False", false)]
-        public void Value_BooleanValue(string source, bool expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var booleanValue = Assert.IsType<BooleanValue>(value);
-            Assert.Equal(expected, booleanValue.Value);
-        }
-
-        [Theory]
-        [InlineData("ONE", "ONE")]
-        [InlineData("TWO", "TWO")]
-        [InlineData("ZERO", "ZERO")]
-        public void Value_EnumValue(string source, string expected)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var enumValue = Assert.IsType<EnumValue>(value);
-            Assert.Equal(expected, enumValue.Name);
-        }
-
-        [Fact]
-        public void Value_ListValue_Empty()
-        {
-            /* Given */
-            var sut = Parser.Create("[]");
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var listValue = Assert.IsType<ListValue>(value);
-            Assert.Equal(0, listValue.Values.Count);
-        }
-
-        [Fact]
-        public void Value_ListValue_with_IntValues()
-        {
-            /* Given */
-            var sut = Parser.Create("[1,2,3]");
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var listValue = Assert.IsType<ListValue>(value);
-            Assert.Equal(3, listValue.Values.Count);
-            Assert.All(listValue.Values, v => Assert.IsType<IntValue>(v));
-        }
-
-        [Fact]
-        public void Value_ObjectValue_Empty()
-        {
-            /* Given */
-            var sut = Parser.Create("{}");
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var listValue = Assert.IsType<ObjectValue>(value);
-            Assert.Equal(0, listValue.Fields.Count);
-        }
-
-        [Fact]
-        public void Value_ObjectValue_with_Fields()
-        {
-            /* Given */
-            var sut = Parser.Create(@"{ name:""tanka"", version: 2.0 }");
-
-            /* When */
-            var value = sut.ParseValue();
-
-            /* Then */
-            var listValue = Assert.IsType<ObjectValue>(value);
-            Assert.Equal(2, listValue.Fields.Count);
-        }
-
-        [Theory]
-        [InlineData("name: 1.0", "name", typeof(FloatValue))]
-        [InlineData(@"x: ""string""", "x", typeof(StringValue))]
-        [InlineData(@"empty: null", "empty", typeof(NullValue))]
-        [InlineData(@"list: [1,2,3]", "list", typeof(ListValue))]
-        public void Value_ObjectValue_ObjectField(string source, string expectedName, Type typeOf)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var value = sut.ParseObjectField();
-
-            /* Then */
-            var field = Assert.IsType<ObjectField>(value);
-            Assert.Equal(expectedName, field.Name);
-            Assert.IsType(typeOf, field.Value);
-        }
+        /* When */
+        var value = sut.ParseOptionalDescription();
+
+        /* Then */
+        Assert.Equal("Description", value);
+    }
+
+    [Fact]
+    public void Value_Null()
+    {
+        /* Given */
+        var sut = Parser.Create("null");
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        Assert.IsType<NullValue>(value);
+    }
+
+    [Theory]
+    [InlineData("true", true)]
+    [InlineData("false", false)]
+    [InlineData("True", true)]
+    [InlineData("False", false)]
+    public void Value_BooleanValue(string source, bool expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var booleanValue = Assert.IsType<BooleanValue>(value);
+        Assert.Equal(expected, booleanValue.Value);
+    }
+
+    [Theory]
+    [InlineData("ONE", "ONE")]
+    [InlineData("TWO", "TWO")]
+    [InlineData("ZERO", "ZERO")]
+    public void Value_EnumValue(string source, string expected)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var enumValue = Assert.IsType<EnumValue>(value);
+        Assert.Equal(expected, enumValue.Name);
+    }
+
+    [Fact]
+    public void Value_ListValue_Empty()
+    {
+        /* Given */
+        var sut = Parser.Create("[]");
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var listValue = Assert.IsType<ListValue>(value);
+        Assert.Equal(0, listValue.Values.Count);
+    }
+
+    [Fact]
+    public void Value_ListValue_with_IntValues()
+    {
+        /* Given */
+        var sut = Parser.Create("[1,2,3]");
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var listValue = Assert.IsType<ListValue>(value);
+        Assert.Equal(3, listValue.Values.Count);
+        Assert.All(listValue.Values, v => Assert.IsType<IntValue>(v));
+    }
+
+    [Fact]
+    public void Value_ObjectValue_Empty()
+    {
+        /* Given */
+        var sut = Parser.Create("{}");
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var listValue = Assert.IsType<ObjectValue>(value);
+        Assert.Equal(0, listValue.Fields.Count);
+    }
+
+    [Fact]
+    public void Value_ObjectValue_with_Fields()
+    {
+        /* Given */
+        var sut = Parser.Create(@"{ name:""tanka"", version: 2.0 }");
+
+        /* When */
+        var value = sut.ParseValue();
+
+        /* Then */
+        var listValue = Assert.IsType<ObjectValue>(value);
+        Assert.Equal(2, listValue.Fields.Count);
+    }
+
+    [Theory]
+    [InlineData("name: 1.0", "name", typeof(FloatValue))]
+    [InlineData(@"x: ""string""", "x", typeof(StringValue))]
+    [InlineData(@"empty: null", "empty", typeof(NullValue))]
+    [InlineData(@"list: [1,2,3]", "list", typeof(ListValue))]
+    public void Value_ObjectValue_ObjectField(string source, string expectedName, Type typeOf)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var value = sut.ParseObjectField();
+
+        /* Then */
+        var field = Assert.IsType<ObjectField>(value);
+        Assert.Equal(expectedName, field.Name);
+        Assert.IsType(typeOf, field.Value);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Printer.TypeSystemFacts.cs b/tests/graphql.language.tests/Printer.TypeSystemFacts.cs
index 4be278ad5..ec4742a12 100644
--- a/tests/graphql.language.tests/Printer.TypeSystemFacts.cs
+++ b/tests/graphql.language.tests/Printer.TypeSystemFacts.cs
@@ -1,322 +1,298 @@
-using System.Linq;
-using System.Reflection.Metadata;
-using System.Text.RegularExpressions;
-using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.Language.Nodes.TypeSystem;
+using System.Text.RegularExpressions;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class Printer_TypeSystemFacts
 {
-    public class Printer_TypeSystemFacts
+    [Fact]
+    public void DirectiveDefinition()
     {
-        private void AssertPrintedEquals(string expected, string actual)
-        {
-            string Normalize(string str)
-            {
-                str = str
-                    .Replace("\r", string.Empty)
-                    .Replace("\n", string.Empty);
-
-                return Regex.Replace(str, @"\s+", " ");
-            }
-
-            Assert.Equal(
-                Normalize(expected),
-                Normalize(actual),
-                ignoreCase: false,
-                ignoreLineEndingDifferences: true,
-                ignoreWhiteSpaceDifferences: true
-            );
-        }
+        /* Given */
+        var source = "directive @name on QUERY";
+        var sut = Parser.Create(source);
 
-        [Fact]
-        public void DirectiveDefinition()
-        {
-            /* Given */
-            var source = "directive @name on QUERY";
-            var sut = Parser.Create(source);
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
-
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void DirectiveDefinition_Arguments()
-        {
-            /* Given */
-            var source = "directive @name(a: Int, b: Float) on QUERY";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void DirectiveDefinition_Arguments()
+    {
+        /* Given */
+        var source = "directive @name(a: Int, b: Float) on QUERY";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void DirectiveDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void DirectiveDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  directive @name repeatable on MUTATION";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void DirectiveDefinition_Location()
-        {
-            /* Given */
-            var source = "directive @name on MUTATION";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void DirectiveDefinition_Location()
+    {
+        /* Given */
+        var source = "directive @name on MUTATION";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void DirectiveDefinition_Repeatable()
-        {
-            /* Given */
-            var source = "directive @name repeatable on MUTATION";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void DirectiveDefinition_Repeatable()
+    {
+        /* Given */
+        var source = "directive @name repeatable on MUTATION";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("directive @name on FIELD")]
-        [InlineData("directive @name on FIELD | QUERY")]
-        [InlineData("directive @name on UNION | SCHEMA | FIELD")]
-        public void DirectiveDefinition_DirectiveLocations(string source)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
+    [Theory]
+    [InlineData("directive @name on FIELD")]
+    [InlineData("directive @name on FIELD | QUERY")]
+    [InlineData("directive @name on UNION | SCHEMA | FIELD")]
+    public void DirectiveDefinition_DirectiveLocations(string source)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseDirectiveDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseDirectiveDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ScalarDefinition()
-        {
-            /* Given */
-            var source = "scalar Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void ScalarDefinition()
+    {
+        /* Given */
+        var source = "scalar Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseScalarDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseScalarDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ScalarDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void ScalarDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
  scalar Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseScalarDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseScalarDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ScalarDefinition_Directives()
-        {
-            /* Given */
-            var source = "scalar Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void ScalarDefinition_Directives()
+    {
+        /* Given */
+        var source = "scalar Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseScalarDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseScalarDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldDefinition()
-        {
-            /* Given */
-            var source = "name: Int";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void FieldDefinition()
+    {
+        /* Given */
+        var source = "name: Int";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseFieldDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseFieldDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void FieldDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  name: Int";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseFieldDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseFieldDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldDefinition_Directives()
-        {
-            /* Given */
-            var source = "name: Int @a @b @c";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void FieldDefinition_Directives()
+    {
+        /* Given */
+        var source = "name: Int @a @b @c";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseFieldDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseFieldDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldDefinition_Arguments()
-        {
-            /* Given */
-            var source = "name(a: Int!, b: custom): Int";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void FieldDefinition_Arguments()
+    {
+        /* Given */
+        var source = "name(a: Int!, b: custom): Int";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseFieldDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseFieldDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("implements Name")]
-        [InlineData("implements A & B")]
-        public void ImplementsInterfaces(string source)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
+    [Theory]
+    [InlineData("implements Name")]
+    [InlineData("implements A & B")]
+    public void ImplementsInterfaces(string source)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseOptionalImplementsInterfaces()!);
+        /* When */
+        var actual = Printer.Print(sut.ParseOptionalImplementsInterfaces()!);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition()
-        {
-            /* Given */
-            var source = "type Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void ObjectDefinition()
+    {
+        /* Given */
+        var source = "type Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void ObjectDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  type Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Interfaces()
-        {
-            /* Given */
-            var source = "type Name implements Interface";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void ObjectDefinition_Interfaces()
+    {
+        /* Given */
+        var source = "type Name implements Interface";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Directives()
-        {
-            /* Given */
-            var source = "type Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void ObjectDefinition_Directives()
+    {
+        /* Given */
+        var source = "type Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Fields()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void ObjectDefinition_Fields()
+    {
+        /* Given */
+        var source = @"
 type Name {
     name: String
     version(includePreviews: Boolean): Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ObjectDefinition_All()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void ObjectDefinition_All()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
@@ -324,96 +300,96 @@ type Name implements A & B @a @b  {
     name: String
     version(includePreviews: Boolean): Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition()
-        {
-            /* Given */
-            var source = "interface Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void InterfaceDefinition()
+    {
+        /* Given */
+        var source = "interface Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InterfaceDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  interface Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Interfaces()
-        {
-            /* Given */
-            var source = "interface Name implements Interface";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void InterfaceDefinition_Interfaces()
+    {
+        /* Given */
+        var source = "interface Name implements Interface";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Directives()
-        {
-            /* Given */
-            var source = "interface Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void InterfaceDefinition_Directives()
+    {
+        /* Given */
+        var source = "interface Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Fields()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InterfaceDefinition_Fields()
+    {
+        /* Given */
+        var source = @"
 interface Name {
     name: String
     version(includePreviews: Boolean): Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_All()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InterfaceDefinition_All()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
@@ -421,154 +397,154 @@ interface Name implements A & B @a @b  {
     name: String
     version(includePreviews: Boolean): Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInterfaceDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInterfaceDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void UnionDefinition()
-        {
-            /* Given */
-            var source = "union Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void UnionDefinition()
+    {
+        /* Given */
+        var source = "union Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseUnionDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseUnionDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void UnionDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void UnionDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  union Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseUnionDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseUnionDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void UnionDefinition_Members()
-        {
-            /* Given */
-            var source = "union Name = A | B";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void UnionDefinition_Members()
+    {
+        /* Given */
+        var source = "union Name = A | B";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseUnionDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseUnionDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void UnionDefinition_Directives()
-        {
-            /* Given */
-            var source = "union Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void UnionDefinition_Directives()
+    {
+        /* Given */
+        var source = "union Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseUnionDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseUnionDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void UnionDefinition_All()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void UnionDefinition_All()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
  union Name @a @b = A | B";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseUnionDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseUnionDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void EnumDefinition()
-        {
-            /* Given */
-            var source = "enum Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void EnumDefinition()
+    {
+        /* Given */
+        var source = "enum Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseEnumDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseEnumDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void EnumDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void EnumDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  enum Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseEnumDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseEnumDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void EnumDefinition_Values()
-        {
-            /* Given */
-            var source = "enum Name { A B }";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void EnumDefinition_Values()
+    {
+        /* Given */
+        var source = "enum Name { A B }";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseEnumDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseEnumDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void EnumDefinition_Directives()
-        {
-            /* Given */
-            var source = "enum Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void EnumDefinition_Directives()
+    {
+        /* Given */
+        var source = "enum Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseEnumDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseEnumDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void EnumDefinition_All()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void EnumDefinition_All()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
@@ -577,100 +553,100 @@ enum Name @a @b {
     B
     C
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseEnumDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseEnumDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition()
-        {
-            /* Given */
-            var source = "input Name";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void InputObjectDefinition()
+    {
+        /* Given */
+        var source = "input Name";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InputObjectDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  input Name";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Directives()
-        {
-            /* Given */
-            var source = "input Name @a @b";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void InputObjectDefinition_Directives()
+    {
+        /* Given */
+        var source = "input Name @a @b";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Fields()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InputObjectDefinition_Fields()
+    {
+        /* Given */
+        var source = @"
 input Name {
     name: String
     version: Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Fields2()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InputObjectDefinition_Fields2()
+    {
+        /* Given */
+        var source = @"
 input Name {
     name: String! = ""test""
     nullable: String
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_All()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void InputObjectDefinition_All()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 """"""
@@ -678,78 +654,78 @@ input Name @a @b  {
     name: String
     version: Float
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseInputObjectDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseInputObjectDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void SchemaDefinition()
-        {
-            /* Given */
-            var source = "schema { query: TypeName }";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void SchemaDefinition()
+    {
+        /* Given */
+        var source = "schema { query: TypeName }";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseSchemaDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseSchemaDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void SchemaDefinition_Description()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void SchemaDefinition_Description()
+    {
+        /* Given */
+        var source = @"
 """"""Description""""""
  schema { query: TypeName }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseSchemaDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseSchemaDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void SchemaDefinition_Directives()
-        {
-            /* Given */
-            var source = "schema @a @b { query: TypeName }";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void SchemaDefinition_Directives()
+    {
+        /* Given */
+        var source = "schema @a @b { query: TypeName }";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseSchemaDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseSchemaDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void SchemaDefinition_AllRootTypes()
-        {
-            /* Given */
-            var source = "schema { query: Query mutation: Mutation subscription: Subscription }";
-            var sut = Parser.Create(source);
+    [Fact]
+    public void SchemaDefinition_AllRootTypes()
+    {
+        /* Given */
+        var source = "schema { query: Query mutation: Mutation subscription: Subscription }";
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseSchemaDefinition());
+        /* When */
+        var actual = Printer.Print(sut.ParseSchemaDefinition());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void TypeSystemDocument_TypeDefinitions()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void TypeSystemDocument_TypeDefinitions()
+    {
+        /* Given */
+        var source = @"
 """"""
 Scalar
 """"""
@@ -792,20 +768,20 @@ input Input {
     """"""Field""""""
     field: Scalar
  }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseTypeSystemDocument());
+        /* When */
+        var actual = Printer.Print(sut.ParseTypeSystemDocument());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void TypeSystemDocument_TypeExtensions()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void TypeSystemDocument_TypeExtensions()
+    {
+        /* Given */
+        var source = @"
 extend scalar Scalar
  
   extend type Object {
@@ -830,13 +806,32 @@ extend input Input {
     """"""Field""""""
     field: Scalar
   }";
-            var sut = Parser.Create(source);
+        var sut = Parser.Create(source);
 
-            /* When */
-            var actual = Printer.Print(sut.ParseTypeSystemDocument());
+        /* When */
+        var actual = Printer.Print(sut.ParseTypeSystemDocument());
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
+
+    private void AssertPrintedEquals(string expected, string actual)
+    {
+        string Normalize(string str)
+        {
+            str = str
+                .Replace("\r", string.Empty)
+                .Replace("\n", string.Empty);
+
+            return Regex.Replace(str, @"\s+", " ");
         }
+
+        Assert.Equal(
+            Normalize(expected),
+            Normalize(actual),
+            false,
+            true,
+            true
+        );
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/PrinterFacts.cs b/tests/graphql.language.tests/PrinterFacts.cs
index 87cc89a77..d023ccfb1 100644
--- a/tests/graphql.language.tests/PrinterFacts.cs
+++ b/tests/graphql.language.tests/PrinterFacts.cs
@@ -5,124 +5,104 @@
 using Tanka.GraphQL.Language.Nodes;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class PrinterFacts
 {
-    public class PrinterFacts
+    [Theory]
+    [InlineData("name: [1,2,3]", "name", typeof(ListValue))]
+    [InlineData("another: -123.123", "another", typeof(FloatValue))]
+    public void Argument(string source, string name, Type valueType)
     {
-        private void AssertPrintedEquals(string expected, string actual)
-        {
-            string Normalize(string str)
-            {
-                str = str
-                    .Replace("\r", string.Empty)
-                    .Replace("\n", string.Empty);
-
-                return Regex.Replace(str, @"\s+", " ");
-            }
-
-            Assert.Equal(
-                Normalize(expected),
-                Normalize(actual),
-                false,
-                true,
-                true
-            );
-        }
-
-        [Theory]
-        [InlineData("name: [1,2,3]", "name", typeof(ListValue))]
-        [InlineData("another: -123.123", "another", typeof(FloatValue))]
-        public void Argument(string source, string name, Type valueType)
-        {
-            var node = Parser.Create(source)
-                .ParseArgument();
+        var node = Parser.Create(source)
+            .ParseArgument();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("$variable: Int")]
-        [InlineData("$variable2: String")]
-        public void VariableDefinition(string source)
-        {
-            var node = Parser.Create(source)
-                .ParseVariableDefinition();
+    [Theory]
+    [InlineData("$variable: Int")]
+    [InlineData("$variable2: String")]
+    public void VariableDefinition(string source)
+    {
+        var node = Parser.Create(source)
+            .ParseVariableDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("$variable: Int = 123")]
-        [InlineData(@"$variable2: String = ""Test""")]
-        public void VariableDefinition_DefaultValue(string source)
-        {
-            var node = Parser.Create(source)
-                .ParseVariableDefinition();
+    [Theory]
+    [InlineData("$variable: Int = 123")]
+    [InlineData(@"$variable2: String = ""Test""")]
+    public void VariableDefinition_DefaultValue(string source)
+    {
+        var node = Parser.Create(source)
+            .ParseVariableDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("123", 123)]
-        [InlineData("-123", -123)]
-        public void Value_Int(string source, int expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("123", 123)]
+    [InlineData("-123", -123)]
+    public void Value_Int(string source, int expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("123.123", 123.123)]
-        [InlineData("-123.123", -123.123)]
-        [InlineData("123e20", 123e20)]
-        public void Value_Float(string source, double expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("123.123", 123.123)]
+    [InlineData("-123.123", -123.123)]
+    [InlineData("123e20", 123e20)]
+    public void Value_Float(string source, double expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("\"test\"", "test")]
-        [InlineData("\"test test\"", "test test")]
-        [InlineData("\"test_test\"", "test_test")]
-        public void Value_String(string source, string expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("\"test\"", "test")]
+    [InlineData("\"test test\"", "test test")]
+    [InlineData("\"test_test\"", "test_test")]
+    public void Value_String(string source, string expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData(@"""""""
+    [Theory]
+    [InlineData(@"""""""
                      Cat
                        - not a dog
                        - not a goat
@@ -130,169 +110,169 @@ public void Value_String(string source, string expected)
                      Might be part demon.
 
                      """"""",
-            "Cat\n  - not a dog\n  - not a goat\n\nMight be part demon.")]
-        public void Value_BlockString(string source, string expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+        "Cat\n  - not a dog\n  - not a goat\n\nMight be part demon.")]
+    public void Value_BlockString(string source, string expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            var parsedSource = Encoding.UTF8.GetString(new BlockStringValueReader(
-                    Encoding.UTF8.GetBytes(source))
-                .Read());
+        /* Then */
+        var parsedSource = Encoding.UTF8.GetString(new BlockStringValueReader(
+                Encoding.UTF8.GetBytes(source))
+            .Read());
 
-            AssertPrintedEquals(parsedSource, actual);
-        }
+        AssertPrintedEquals(parsedSource, actual);
+    }
 
-        [Theory]
-        [InlineData("true", true)]
-        [InlineData("false", false)]
-        public void Value_BooleanValue(string source, bool expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("true", true)]
+    [InlineData("false", false)]
+    public void Value_BooleanValue(string source, bool expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("ONE", "ONE")]
-        [InlineData("TWO", "TWO")]
-        [InlineData("ZERO", "ZERO")]
-        public void Value_EnumValue(string source, string expected)
-        {
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("ONE", "ONE")]
+    [InlineData("TWO", "TWO")]
+    [InlineData("ZERO", "ZERO")]
+    public void Value_EnumValue(string source, string expected)
+    {
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("[1,2,3]")]
-        [InlineData("[1.1,2.1,3.1]")]
-        [InlineData("[\"1\",\"2\",\"3\"]")]
-        public void Value_ListValue_with_Values(string source)
-        {
-            /* Given */
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Theory]
+    [InlineData("[1,2,3]")]
+    [InlineData("[1.1,2.1,3.1]")]
+    [InlineData("[\"1\",\"2\",\"3\"]")]
+    public void Value_ListValue_with_Values(string source)
+    {
+        /* Given */
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Theory]
-        [InlineData("{ name: 1.0 }", "name", typeof(FloatValue))]
-        [InlineData(@"{ x: ""string"" }", "x", typeof(StringValue))]
-        [InlineData(@"{ empty: null }", "empty", typeof(NullValue))]
-        [InlineData(@"{ list: [1,2,3] }", "list", typeof(ListValue))]
-        public void Value_ObjectValue_ObjectField(string source, string expectedName, Type typeOf)
-        {
-            var node = Parser.Create(source)
-                .ParseObjectValue();
+    [Theory]
+    [InlineData("{ name: 1.0 }", "name", typeof(FloatValue))]
+    [InlineData(@"{ x: ""string"" }", "x", typeof(StringValue))]
+    [InlineData(@"{ empty: null }", "empty", typeof(NullValue))]
+    [InlineData(@"{ list: [1,2,3] }", "list", typeof(ListValue))]
+    public void Value_ObjectValue_ObjectField(string source, string expectedName, Type typeOf)
+    {
+        var node = Parser.Create(source)
+            .ParseObjectValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Arguments()
-        {
-            /* Given */
-            var source = "(arg1: 123, arg2: -32, arg3: $variable)";
-            var nodes = Parser.Create(source)
-                .ParseOptionalArguments();
+    [Fact]
+    public void Arguments()
+    {
+        /* Given */
+        var source = "(arg1: 123, arg2: -32, arg3: $variable)";
+        var nodes = Parser.Create(source)
+            .ParseOptionalArguments();
 
-            /* When */
-            var actual = Printer.Print(nodes!);
+        /* When */
+        var actual = Printer.Print(nodes!);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Directive()
-        {
-            /* Given */
-            var source = "@name";
-            var node = Parser.Create(source)
-                .ParseDirective();
+    [Fact]
+    public void Directive()
+    {
+        /* Given */
+        var source = "@name";
+        var node = Parser.Create(source)
+            .ParseDirective();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Directive_Arguments()
-        {
-            /* Given */
-            var source = "@name(a: 1, b: true, c: null)";
-            var node = Parser.Create(source)
-                .ParseDirective();
+    [Fact]
+    public void Directive_Arguments()
+    {
+        /* Given */
+        var source = "@name(a: 1, b: true, c: null)";
+        var node = Parser.Create(source)
+            .ParseDirective();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Directives()
-        {
-            /* Given */
-            var source = "@name(a: 1, b: true, c: null) @version";
-            var nodes = Parser.Create(source)
-                .ParseOptionalDirectives();
+    [Fact]
+    public void Directives()
+    {
+        /* Given */
+        var source = "@name(a: 1, b: true, c: null) @version";
+        var nodes = Parser.Create(source)
+            .ParseOptionalDirectives();
 
-            /* When */
-            var actual = Printer.Print(nodes);
+        /* When */
+        var actual = Printer.Print(nodes);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Document_FragmentDefinition()
-        {
-            /* Given */
-            var source = @"fragment address on Person { field }";
+    [Fact]
+    public void Document_FragmentDefinition()
+    {
+        /* Given */
+        var source = @"fragment address on Person { field }";
 
-            var node = Parser.Create(source)
-                .ParseExecutableDocument();
+        var node = Parser.Create(source)
+            .ParseExecutableDocument();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void ExecutableDocument()
-        {
-            /* Given */
-            var source = @"query {
+    [Fact]
+    public void ExecutableDocument()
+    {
+        /* Given */
+        var source = @"query {
                                 field
                             }
                             mutation {
@@ -302,344 +282,344 @@ public void ExecutableDocument()
                                 field
                             }";
 
-            var node = Parser.Create(source)
-                .ParseExecutableDocument();
+        var node = Parser.Create(source)
+            .ParseExecutableDocument();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldSelection()
-        {
-            /* Given */
-            var source = "field";
+    [Fact]
+    public void FieldSelection()
+    {
+        /* Given */
+        var source = "field";
 
-            var node = Parser.Create(source)
-                .ParseFieldSelection();
+        var node = Parser.Create(source)
+            .ParseFieldSelection();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldSelection_SelectionSet()
-        {
-            /* Given */
-            var source = "field { subField }";
+    [Fact]
+    public void FieldSelection_SelectionSet()
+    {
+        /* Given */
+        var source = "field { subField }";
 
-            var node = Parser.Create(source)
-                .ParseFieldSelection();
+        var node = Parser.Create(source)
+            .ParseFieldSelection();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldSelection_SelectionSet_MultipleFields()
-        {
-            /* Given */
-            var source = "field { subField field2 }";
+    [Fact]
+    public void FieldSelection_SelectionSet_MultipleFields()
+    {
+        /* Given */
+        var source = "field { subField field2 }";
 
-            var node = Parser.Create(source)
-                .ParseFieldSelection();
+        var node = Parser.Create(source)
+            .ParseFieldSelection();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FieldSelection_with_Alias()
-        {
-            /* Given */
-            var source = "alias: field";
+    [Fact]
+    public void FieldSelection_with_Alias()
+    {
+        /* Given */
+        var source = "alias: field";
 
-            var node = Parser.Create(source)
-                .ParseFieldSelection();
+        var node = Parser.Create(source)
+            .ParseFieldSelection();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentDefinition()
-        {
-            /* Given */
-            var source = "fragment name on Human { field }";
-            var node = Parser.Create(source)
-                .ParseFragmentDefinition();
+    [Fact]
+    public void FragmentDefinition()
+    {
+        /* Given */
+        var source = "fragment name on Human { field }";
+        var node = Parser.Create(source)
+            .ParseFragmentDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentDefinition_Directives()
-        {
-            /* Given */
-            var source = "fragment name on Human @a @b { field }";
-            var node = Parser.Create(source)
-                .ParseFragmentDefinition();
+    [Fact]
+    public void FragmentDefinition_Directives()
+    {
+        /* Given */
+        var source = "fragment name on Human @a @b { field }";
+        var node = Parser.Create(source)
+            .ParseFragmentDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentDefinition_SelectionSet()
-        {
-            /* Given */
-            var source = "fragment name on Human @a @b { field }";
-            var node = Parser.Create(source)
-                .ParseFragmentDefinition();
+    [Fact]
+    public void FragmentDefinition_SelectionSet()
+    {
+        /* Given */
+        var source = "fragment name on Human @a @b { field }";
+        var node = Parser.Create(source)
+            .ParseFragmentDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentDefinition_TypeCondition()
-        {
-            /* Given */
-            var source = "fragment name on Human { field }";
-            var node = Parser.Create(source)
-                .ParseFragmentDefinition();
+    [Fact]
+    public void FragmentDefinition_TypeCondition()
+    {
+        /* Given */
+        var source = "fragment name on Human { field }";
+        var node = Parser.Create(source)
+            .ParseFragmentDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentSpread()
-        {
-            /* Given */
-            var source = "...name";
+    [Fact]
+    public void FragmentSpread()
+    {
+        /* Given */
+        var source = "...name";
 
-            var node = Parser.Create(source)
-                .ParseFragmentSpread();
+        var node = Parser.Create(source)
+            .ParseFragmentSpread();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void FragmentSpread_Directives()
-        {
-            /* Given */
-            var source = "...name @a @b @c";
+    [Fact]
+    public void FragmentSpread_Directives()
+    {
+        /* Given */
+        var source = "...name @a @b @c";
 
-            var node = Parser.Create(source)
-                .ParseFragmentSpread();
+        var node = Parser.Create(source)
+            .ParseFragmentSpread();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InlineFragment()
-        {
-            /* Given */
-            var source = "... on Human { }";
+    [Fact]
+    public void InlineFragment()
+    {
+        /* Given */
+        var source = "... on Human { }";
 
-            var node = Parser.Create(source)
-                .ParseInlineFragment();
+        var node = Parser.Create(source)
+            .ParseInlineFragment();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InlineFragment_Directives()
-        {
-            /* Given */
-            var source = "... on Human @a @b { }";
+    [Fact]
+    public void InlineFragment_Directives()
+    {
+        /* Given */
+        var source = "... on Human @a @b { }";
 
-            var node = Parser.Create(source)
-                .ParseInlineFragment();
+        var node = Parser.Create(source)
+            .ParseInlineFragment();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InlineFragment_NoTypeCondition_SelectionSet()
-        {
-            /* Given */
-            var source = "... { field }";
+    [Fact]
+    public void InlineFragment_NoTypeCondition_SelectionSet()
+    {
+        /* Given */
+        var source = "... { field }";
 
-            var node = Parser.Create(source)
-                .ParseInlineFragment();
+        var node = Parser.Create(source)
+            .ParseInlineFragment();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void InlineFragment_SelectionSet()
-        {
-            /* Given */
-            var source = "... on Human { field }";
+    [Fact]
+    public void InlineFragment_SelectionSet()
+    {
+        /* Given */
+        var source = "... on Human { field }";
 
-            var node = Parser.Create(source)
-                .ParseInlineFragment();
+        var node = Parser.Create(source)
+            .ParseInlineFragment();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_Directives()
-        {
-            /* Given */
-            var source =
-                @"query @a @b(a: 0, b: -54.0) { }";
+    [Fact]
+    public void OperationDefinition_Directives()
+    {
+        /* Given */
+        var source =
+            @"query @a @b(a: 0, b: -54.0) { }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_Empty()
-        {
-            /* Given */
-            var source = "query { }";
+    [Fact]
+    public void OperationDefinition_Empty()
+    {
+        /* Given */
+        var source = "query { }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_FieldSelection()
-        {
-            /* Given */
-            var source = "query { field }";
+    [Fact]
+    public void OperationDefinition_SelectionSet_FieldSelection()
+    {
+        /* Given */
+        var source = "query { field }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_FragmentSpread()
-        {
-            /* Given */
-            var source = @"query {  
+    [Fact]
+    public void OperationDefinition_SelectionSet_FragmentSpread()
+    {
+        /* Given */
+        var source = @"query {  
                             ...fragmentName
                          }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_SelectionSet_InlineFragment()
-        {
-            /* Given */
-            var source = @"query {  
+    [Fact]
+    public void OperationDefinition_SelectionSet_InlineFragment()
+    {
+        /* Given */
+        var source = @"query {  
                             ... on Human {
                                 field
                             }
                          }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_Short_Empty()
-        {
-            /* Given */
-            var source = "{ }";
+    [Fact]
+    public void OperationDefinition_Short_Empty()
+    {
+        /* Given */
+        var source = "{ }";
 
-            var node = Parser.Create(source)
-                .ParseShortOperationDefinition();
+        var node = Parser.Create(source)
+            .ParseShortOperationDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_Short_Selection()
-        {
-            /* Given */
-            var source = @"{ 
+    [Fact]
+    public void OperationDefinition_Short_Selection()
+    {
+        /* Given */
+        var source = @"{ 
                             field
                             field2 {
                                 ... on Human {
@@ -648,303 +628,322 @@ ... on Human {
                             }
                            }";
 
-            var node = Parser.Create(source)
-                .ParseShortOperationDefinition();
+        var node = Parser.Create(source)
+            .ParseShortOperationDefinition();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_VariableDefinitions()
-        {
-            /* Given */
-            var source =
-                @"query($name: String!, $version: Float!) { }";
+    [Fact]
+    public void OperationDefinition_VariableDefinitions()
+    {
+        /* Given */
+        var source =
+            @"query($name: String!, $version: Float!) { }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_After_Selection()
-        {
-            /* Given */
-            var source =
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_After_Selection()
+    {
+        /* Given */
+        var source =
+            @"query {
                         field 
                         # comment 
                     }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals("query { field }", actual);
-        }
+        /* Then */
+        AssertPrintedEquals("query { field }", actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Before()
-        {
-            /* Given */
-            var source =
-                @"# comment 
+    [Fact]
+    public void OperationDefinition_With_Comment_Before()
+    {
+        /* Given */
+        var source =
+            @"# comment 
                     query { 
                         field 
                     }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals("query { field }", actual);
-        }
+        /* Then */
+        AssertPrintedEquals("query { field }", actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Before_Selection()
-        {
-            /* Given */
-            var source =
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_Before_Selection()
+    {
+        /* Given */
+        var source =
+            @"query {
                         # comment 
                         field 
                     }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals("query { field }", actual);
-        }
+        /* Then */
+        AssertPrintedEquals("query { field }", actual);
+    }
 
-        [Fact]
-        public void OperationDefinition_With_Comment_Between_Selections()
-        {
-            /* Given */
-            var source =
-                @"query {
+    [Fact]
+    public void OperationDefinition_With_Comment_Between_Selections()
+    {
+        /* Given */
+        var source =
+            @"query {
                         field1
                         # comment
                         field2
                     }";
 
-            var node = Parser.Create(source)
-                .ParseOperationDefinition(OperationType.Query);
+        var node = Parser.Create(source)
+            .ParseOperationDefinition(OperationType.Query);
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals("query { field1 field2 }", actual);
-        }
+        /* Then */
+        AssertPrintedEquals("query { field1 field2 }", actual);
+    }
 
-        [Fact]
-        public void Type_ListOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName]";
+    [Fact]
+    public void Type_ListOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName]";
 
-            var node = Parser.Create(source)
-                .ParseType();
+        var node = Parser.Create(source)
+            .ParseType();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Type_ListOf_NonNullOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName!]";
+    [Fact]
+    public void Type_ListOf_NonNullOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName!]";
 
-            var node = Parser.Create(source)
-                .ParseType();
+        var node = Parser.Create(source)
+            .ParseType();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Type_NamedType()
-        {
-            /* Given */
-            var source = "TypeName";
+    [Fact]
+    public void Type_NamedType()
+    {
+        /* Given */
+        var source = "TypeName";
 
-            var node = Parser.Create(source)
-                .ParseType();
+        var node = Parser.Create(source)
+            .ParseType();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Type_NonNullOf_ListOf_NamedType()
-        {
-            /* Given */
-            var source = "[TypeName]!";
+    [Fact]
+    public void Type_NonNullOf_ListOf_NamedType()
+    {
+        /* Given */
+        var source = "[TypeName]!";
 
-            var node = Parser.Create(source)
-                .ParseType();
+        var node = Parser.Create(source)
+            .ParseType();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Type_NonNullOf_NamedType()
-        {
-            /* Given */
-            var source = "TypeName!";
+    [Fact]
+    public void Type_NonNullOf_NamedType()
+    {
+        /* Given */
+        var source = "TypeName!";
 
-            var node = Parser.Create(source)
-                .ParseType();
+        var node = Parser.Create(source)
+            .ParseType();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_BlockString_AsDescription()
-        {
-            /* Given */
-            var source = @"
+    [Fact]
+    public void Value_BlockString_AsDescription()
+    {
+        /* Given */
+        var source = @"
 """"""
 Description
 multiple lines
 """"""
 ";
-            var node = Parser.Create(source)
-                .ParseOptionalDescription();
+        var node = Parser.Create(source)
+            .ParseOptionalDescription();
 
-            /* When */
-            var actual = Printer.Print(node!);
+        /* When */
+        var actual = Printer.Print(node!);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_ListValue_Empty()
-        {
-            /* Given */
-            var source = "[]";
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Fact]
+    public void Value_ListValue_Empty()
+    {
+        /* Given */
+        var source = "[]";
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_ListValue_with_IntValues()
-        {
-            /* Given */
-            var source = "[1,2,3]";
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Fact]
+    public void Value_ListValue_with_IntValues()
+    {
+        /* Given */
+        var source = "[1,2,3]";
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_Null()
-        {
-            /* Given */
-            var source = "null";
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Fact]
+    public void Value_Null()
+    {
+        /* Given */
+        var source = "null";
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_ObjectValue_Empty()
-        {
-            /* Given */
-            var source = "{ }";
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Fact]
+    public void Value_ObjectValue_Empty()
+    {
+        /* Given */
+        var source = "{ }";
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void Value_ObjectValue_with_Fields()
-        {
-            /* Given */
-            var source = @"{ name: ""tanka"", version: 2.0 }";
-            var node = Parser.Create(source)
-                .ParseValue();
+    [Fact]
+    public void Value_ObjectValue_with_Fields()
+    {
+        /* Given */
+        var source = @"{ name: ""tanka"", version: 2.0 }";
+        var node = Parser.Create(source)
+            .ParseValue();
 
-            /* When */
-            var actual = Printer.Print(node);
+        /* When */
+        var actual = Printer.Print(node);
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
-        }
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-        [Fact]
-        public void VariableDefinitions()
-        {
-            /* Given */
-            var source = @"($name: String! = ""tanka"", $version: Float = 2.0)";
+    [Fact]
+    public void VariableDefinitions()
+    {
+        /* Given */
+        var source = @"($name: String! = ""tanka"", $version: Float = 2.0)";
+
+        var nodes = Parser.Create(source)
+            .ParseVariableDefinitions();
 
-            var nodes = Parser.Create(source)
-                .ParseVariableDefinitions();
+        /* When */
+        var actual = Printer.Print(nodes);
 
-            /* When */
-            var actual = Printer.Print(nodes);
+        /* Then */
+        AssertPrintedEquals(source, actual);
+    }
 
-            /* Then */
-            AssertPrintedEquals(source, actual);
+    private void AssertPrintedEquals(string expected, string actual)
+    {
+        string Normalize(string str)
+        {
+            str = str
+                .Replace("\r", string.Empty)
+                .Replace("\n", string.Empty);
+
+            return Regex.Replace(str, @"\s+", " ");
         }
+
+        Assert.Equal(
+            Normalize(expected),
+            Normalize(actual),
+            false,
+            true,
+            true
+        );
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/ProfilingFacts.cs b/tests/graphql.language.tests/ProfilingFacts.cs
index f6d8ab62b..747919111 100644
--- a/tests/graphql.language.tests/ProfilingFacts.cs
+++ b/tests/graphql.language.tests/ProfilingFacts.cs
@@ -1,41 +1,11 @@
 using System.Text;
-using Tanka.GraphQL.Language.Internal;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
-{
-    public class ProfilingFacts
-    {
-        public ProfilingFacts()
-        {
-            _queryBytes = Encoding.UTF8.GetBytes(DefaultQuery);
-        }
-
-        [Fact]
-        public void Lex_IntrospectionQuery()
-        {
-            var lexer = Lexer.Create(_queryBytes);
-
-            while (lexer.Advance())
-            {
-                if (lexer.Kind == TokenKind.LeftBrace)
-                {
-
-                }
-            }
-        }
-
-        [Fact]
-        public void Parse_IntrospectionQuery()
-        {
-            var parser = Parser.Create(_queryBytes);
-            var document = parser.ParseExecutableDocument();
+namespace Tanka.GraphQL.Language.Tests;
 
-            Assert.NotNull(document.OperationDefinitions);
-            Assert.NotEmpty(document.OperationDefinitions);
-        }
-
-        public static string DefaultQuery = @"
+public class ProfilingFacts
+{
+    public static string DefaultQuery = @"
             query IntrospectionQuery {
               __schema {
                 queryType { name }
@@ -125,6 +95,31 @@ fragment TypeRef on __Type {
               }
             }";
 
-        private byte[] _queryBytes;
+    private readonly byte[] _queryBytes;
+
+    public ProfilingFacts()
+    {
+        _queryBytes = Encoding.UTF8.GetBytes(DefaultQuery);
+    }
+
+    [Fact]
+    public void Lex_IntrospectionQuery()
+    {
+        var lexer = Lexer.Create(_queryBytes);
+
+        while (lexer.Advance())
+            if (lexer.Kind == TokenKind.LeftBrace)
+            {
+            }
+    }
+
+    [Fact]
+    public void Parse_IntrospectionQuery()
+    {
+        var parser = Parser.Create(_queryBytes);
+        var document = parser.ParseExecutableDocument();
+
+        Assert.NotNull(document.OperationDefinitions);
+        Assert.NotEmpty(document.OperationDefinitions);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/RealWorldSchemas/ParseGitHubSchemaFacts.cs b/tests/graphql.language.tests/RealWorldSchemas/ParseGitHubSchemaFacts.cs
index 1749db113..8c026ad60 100644
--- a/tests/graphql.language.tests/RealWorldSchemas/ParseGitHubSchemaFacts.cs
+++ b/tests/graphql.language.tests/RealWorldSchemas/ParseGitHubSchemaFacts.cs
@@ -1,40 +1,39 @@
 using System.IO;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.RealWorldSchemas
+namespace Tanka.GraphQL.Language.Tests.RealWorldSchemas;
+
+public class ParseGitHubSchemaFacts
 {
-    public class ParseGitHubSchemaFacts
+    public ParseGitHubSchemaFacts()
+    {
+        GitHubBytes = File.ReadAllBytes("RealWorldSchemas/github.graphql");
+    }
+
+    public byte[] GitHubBytes { get; }
+
+    [Fact]
+    public void Parse()
+    {
+        var parser = Parser.Create(GitHubBytes);
+        var typeSystem = parser.ParseTypeSystemDocument();
+
+        Assert.NotNull(typeSystem.TypeDefinitions);
+        Assert.NotEmpty(typeSystem.TypeDefinitions);
+    }
+
+    [Fact]
+    public void ParseAndPrintAndParse()
     {
-        public ParseGitHubSchemaFacts()
-        {
-            GitHubBytes = File.ReadAllBytes("RealWorldSchemas/github.graphql");
-        }
-
-        public byte[] GitHubBytes { get; }
-
-        [Fact]
-        public void Parse()
-        {
-            var parser = Parser.Create(GitHubBytes);
-            var typeSystem = parser.ParseTypeSystemDocument();
-
-            Assert.NotNull(typeSystem.TypeDefinitions);
-            Assert.NotEmpty(typeSystem.TypeDefinitions);
-        }
-
-        [Fact]
-        public void ParseAndPrintAndParse()
-        {
-            var parser = Parser.Create(GitHubBytes);
-            var typeSystem = parser.ParseTypeSystemDocument();
-            
-            var sdl = Printer.Print(typeSystem);
-
-            var parser2 = Parser.Create(sdl);
-            var typeSystem2 = parser2.ParseTypeSystemDocument();
-
-            Assert.NotNull(typeSystem2.TypeDefinitions);
-            Assert.NotEmpty(typeSystem2.TypeDefinitions);
-        }
+        var parser = Parser.Create(GitHubBytes);
+        var typeSystem = parser.ParseTypeSystemDocument();
+
+        var sdl = Printer.Print(typeSystem);
+
+        var parser2 = Parser.Create(sdl);
+        var typeSystem2 = parser2.ParseTypeSystemDocument();
+
+        Assert.NotNull(typeSystem2.TypeDefinitions);
+        Assert.NotEmpty(typeSystem2.TypeDefinitions);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/SpanExtensions.cs b/tests/graphql.language.tests/SpanExtensions.cs
index 9825b65e9..6b7231535 100644
--- a/tests/graphql.language.tests/SpanExtensions.cs
+++ b/tests/graphql.language.tests/SpanExtensions.cs
@@ -1,12 +1,11 @@
 using System;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public static class SpanExtensions
 {
-    public static class SpanExtensions 
+    public static ReadOnlySpan<byte> AsReadOnlySpan(this byte[] bytes)
     {
-        public static ReadOnlySpan<byte> AsReadOnlySpan(this byte[] bytes)
-        {
-            return bytes.AsSpan();
-        }
+        return bytes.AsSpan();
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/SpanReaderFacts.cs b/tests/graphql.language.tests/SpanReaderFacts.cs
index b37c2b4b5..6cd2813a4 100644
--- a/tests/graphql.language.tests/SpanReaderFacts.cs
+++ b/tests/graphql.language.tests/SpanReaderFacts.cs
@@ -2,152 +2,151 @@
 using Tanka.GraphQL.Language.Internal;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class SpanReaderFacts
 {
-    public class SpanReaderFacts
+    [Theory]
+    [InlineData(0, 0, '0')]
+    [InlineData(1, 1, '1')]
+    [InlineData(2, 2, '2')]
+    [InlineData(9, 9, '9')]
+    public void Advance(
+        int count,
+        int expectedPosition,
+        byte expectedCurrent)
+    {
+        /* Given */
+        var data = "0123456789";
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        Assert.True(sut.Advance(count));
+        Assert.True(sut.TryRead(out var current));
+
+        /* Then */
+        Assert.Equal(expectedCurrent, current);
+        Assert.Equal(expectedPosition, sut.Position);
+    }
+
+    [Fact]
+    public void Empty()
+    {
+        /* Given */
+        var data = string.Empty;
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        /* Then */
+        Assert.False(sut.TryPeek(out _));
+        Assert.False(sut.Advance());
+        Assert.Equal(0, sut.Position);
+    }
+
+    [Fact]
+    public void TryRead_False()
+    {
+        /* Given */
+        var data = "123";
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        /* Then */
+        Assert.True(sut.TryRead(out _));
+        Assert.True(sut.TryRead(out _));
+        Assert.True(sut.TryRead(out _));
+        Assert.False(sut.TryRead(out _));
+    }
+
+    [Fact]
+    public void TryPeek_False()
     {
-        [Theory]
-        [InlineData(0, 0, '0')]
-        [InlineData(1, 1, '1')]
-        [InlineData(2, 2, '2')]
-        [InlineData(9, 9, '9')]
-        public void Advance(
-            int count,
-            int expectedPosition,
-            byte expectedCurrent)
-        {
-            /* Given */
-            var data = "0123456789";
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            Assert.True(sut.Advance(count));
-            Assert.True(sut.TryRead(out var current));
-
-            /* Then */
-            Assert.Equal(expectedCurrent, current);
-            Assert.Equal(expectedPosition, sut.Position);
-        }
-
-        [Fact]
-        public void Empty()
-        {
-            /* Given */
-            var data = string.Empty;
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            /* Then */
-            Assert.False(sut.TryPeek(out _));
-            Assert.False(sut.Advance());
-            Assert.Equal(0, sut.Position);
-        }
-
-        [Fact]
-        public void TryRead_False()
-        {
-            /* Given */
-            var data = "123";
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            /* Then */
-            Assert.True(sut.TryRead(out _));
-            Assert.True(sut.TryRead(out _));
-            Assert.True(sut.TryRead(out _));
-            Assert.False(sut.TryRead(out _));
-        }
-
-        [Fact]
-        public void TryPeek_False()
-        {
-            /* Given */
-            var data = "123";
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            /* Then */
-            Assert.True(sut.TryRead(out _));
-            Assert.True(sut.TryRead(out _));
-            Assert.True(sut.TryRead(out _));
-            Assert.False(sut.TryPeek(out _));
-        }
-
-        [Fact]
-        public void Advance_False()
-        {
-            /* Given */
-            var data = "123";
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            /* Then */
-            Assert.True(sut.Advance());
-            Assert.True(sut.Advance());
-            Assert.True(sut.Advance());
-            Assert.False(sut.Advance());
-        }
-
-        [Fact]
-        public void With_data()
-        {
-            /* Given */
-            var data = "0123456789";
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            /* Then */
-            Assert.Equal(-1, sut.Position);
-            Assert.Equal(data.Length, sut.Length);
-            Assert.True(sut.TryPeek(out _));
-            Assert.True(sut.Advance());
-        }
-
-        [Theory]
-        [InlineData("test", "test", true)]
-        [InlineData("test", "exp", false)]
-        public void IsNext(string data, string expectedNext, bool expectedIsNext)
-        {
-            /* Given */
-            var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
-
-            /* When */
-            var actualIsNext = sut.IsNext(Encoding.UTF8.GetBytes(expectedNext));
-
-            /* Then */
-            Assert.Equal(expectedIsNext, actualIsNext);
-        }
-
-        [Fact]
-        public void TryReadWhileAny()
-        {
-            /* Given */
-            var sut = new SpanReader(Encoding.UTF8.GetBytes("2.0 }"));
-
-            /* When */
-            Assert.True(sut.TryReadWhileAny(out var integerPart, Constants.IsDigit));
-            Assert.True(sut.TryRead(out var dot));
-            Assert.True(sut.TryReadWhileAny(out var fractionPart, Constants.IsDigit));
-
-            /* Then */
-            Assert.Equal("2", Encoding.UTF8.GetString(integerPart));
-            Assert.Equal(Constants.Dot, dot);
-            Assert.Equal("0", Encoding.UTF8.GetString(fractionPart));
-        }
-
-        [Fact]
-        public void TryReadWhileNotAny()
-        {
-            /* Given */
-            var sut = new SpanReader(Encoding.UTF8.GetBytes("test test test\n test"));
-
-            /* When */
-            sut.TryReadWhileNotAny(
-                out var data,
-                Constants.IsReturnOrNewLine);
-
-            /* Then */
-            Assert.Equal("test test test", Encoding.UTF8.GetString(data));
-        }
+        /* Given */
+        var data = "123";
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        /* Then */
+        Assert.True(sut.TryRead(out _));
+        Assert.True(sut.TryRead(out _));
+        Assert.True(sut.TryRead(out _));
+        Assert.False(sut.TryPeek(out _));
+    }
+
+    [Fact]
+    public void Advance_False()
+    {
+        /* Given */
+        var data = "123";
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        /* Then */
+        Assert.True(sut.Advance());
+        Assert.True(sut.Advance());
+        Assert.True(sut.Advance());
+        Assert.False(sut.Advance());
+    }
+
+    [Fact]
+    public void With_data()
+    {
+        /* Given */
+        var data = "0123456789";
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        /* Then */
+        Assert.Equal(-1, sut.Position);
+        Assert.Equal(data.Length, sut.Length);
+        Assert.True(sut.TryPeek(out _));
+        Assert.True(sut.Advance());
+    }
+
+    [Theory]
+    [InlineData("test", "test", true)]
+    [InlineData("test", "exp", false)]
+    public void IsNext(string data, string expectedNext, bool expectedIsNext)
+    {
+        /* Given */
+        var sut = new SpanReader(Encoding.UTF8.GetBytes(data));
+
+        /* When */
+        var actualIsNext = sut.IsNext(Encoding.UTF8.GetBytes(expectedNext));
+
+        /* Then */
+        Assert.Equal(expectedIsNext, actualIsNext);
+    }
+
+    [Fact]
+    public void TryReadWhileAny()
+    {
+        /* Given */
+        var sut = new SpanReader(Encoding.UTF8.GetBytes("2.0 }"));
+
+        /* When */
+        Assert.True(sut.TryReadWhileAny(out var integerPart, Constants.IsDigit));
+        Assert.True(sut.TryRead(out var dot));
+        Assert.True(sut.TryReadWhileAny(out var fractionPart, Constants.IsDigit));
+
+        /* Then */
+        Assert.Equal("2", Encoding.UTF8.GetString(integerPart));
+        Assert.Equal(Constants.Dot, dot);
+        Assert.Equal("0", Encoding.UTF8.GetString(fractionPart));
+    }
+
+    [Fact]
+    public void TryReadWhileNotAny()
+    {
+        /* Given */
+        var sut = new SpanReader(Encoding.UTF8.GetBytes("test test test\n test"));
+
+        /* When */
+        sut.TryReadWhileNotAny(
+            out var data,
+            Constants.IsReturnOrNewLine);
+
+        /* Then */
+        Assert.Equal("test test test", Encoding.UTF8.GetString(data));
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/TankaImportSyntaxFacts.cs b/tests/graphql.language.tests/TankaImportSyntaxFacts.cs
index 053799db3..2f07c7f8c 100644
--- a/tests/graphql.language.tests/TankaImportSyntaxFacts.cs
+++ b/tests/graphql.language.tests/TankaImportSyntaxFacts.cs
@@ -2,73 +2,73 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class TankaImportSyntaxFacts
 {
-    public class TankaImportSyntaxFacts
+    [Fact]
+    public void Import()
     {
-        [Fact]
-        public void Import()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 tanka_import from ""./from""
 """"""
 ");
 
-            /* When */
-            var import = sut.ParseTankaImport();
+        /* When */
+        var import = sut.ParseTankaImport();
 
-            /* Then */
-            Assert.Null(import.Types);
-            Assert.Equal("./from", import.From);
-        }
+        /* Then */
+        Assert.Null(import.Types);
+        Assert.Equal("./from", import.From);
+    }
 
-        [Fact]
-        public void Import_Types()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void Import_Types()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 tanka_import A,B,C from ""./from""
 """"""
 ");
 
-            /* When */
-            var import = sut.ParseTankaImport();
-
-            /* Then */
-            Assert.NotNull(import.Types);
-            Assert.Single(import.Types, t => t == "A");
-            Assert.Single(import.Types, t => t == "B");
-            Assert.Single(import.Types, t => t == "C");
-            Assert.Equal("./from", import.From);
-        }
-
-        [Fact]
-        public void Imports()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var import = sut.ParseTankaImport();
+
+        /* Then */
+        Assert.NotNull(import.Types);
+        Assert.Single(import.Types, t => t == "A");
+        Assert.Single(import.Types, t => t == "B");
+        Assert.Single(import.Types, t => t == "C");
+        Assert.Equal("./from", import.From);
+    }
+
+    [Fact]
+    public void Imports()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 tanka_import from ""./from""
 tanka_import Type1 from ""./from2""
 """"""
 ");
 
-            /* When */
-            var document = sut.ParseTypeSystemDocument();
+        /* When */
+        var document = sut.ParseTypeSystemDocument();
 
-            /* Then */
-            Assert.NotNull(document.Imports);
-            Assert.Equal(2, document.Imports.Count);
-        }
+        /* Then */
+        Assert.NotNull(document.Imports);
+        Assert.Equal(2, document.Imports.Count);
+    }
 
-        [Fact]
-        public void Imports_are_not_descriptions()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void Imports_are_not_descriptions()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 tanka_import from ""./from""
 tanka_import Type1 from ""./from2""
@@ -78,21 +78,22 @@ type Person {
 }
 ");
 
-            /* When */
-            var document = sut.ParseTypeSystemDocument();
-
-            /* Then */
-            Assert.NotNull(document.Imports);
-            Assert.Equal(2, document.Imports.Count);
-            var person = Assert.Single(document?.TypeDefinitions?.OfType<ObjectDefinition>() ?? Enumerable.Empty<ObjectDefinition>());
-            Assert.Null(person?.Description);
-        }
-
-        [Fact]
-        public void Imports_are_not_descriptions2()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var document = sut.ParseTypeSystemDocument();
+
+        /* Then */
+        Assert.NotNull(document.Imports);
+        Assert.Equal(2, document.Imports.Count);
+        var person = Assert.Single(document?.TypeDefinitions?.OfType<ObjectDefinition>() ??
+                                   Enumerable.Empty<ObjectDefinition>());
+        Assert.Null(person?.Description);
+    }
+
+    [Fact]
+    public void Imports_are_not_descriptions2()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 tanka_import from ""./from""
 tanka_import Type1 from ""./from2""
@@ -105,14 +106,14 @@ type Person {
 }
 ");
 
-            /* When */
-            var document = sut.ParseTypeSystemDocument();
+        /* When */
+        var document = sut.ParseTypeSystemDocument();
 
-            /* Then */
-            Assert.NotNull(document.Imports);
-            Assert.Equal(2, document.Imports.Count);
-            var person = Assert.Single(document?.TypeDefinitions?.OfType<ObjectDefinition>() ?? Enumerable.Empty<ObjectDefinition>());
-            Assert.Equal("Description", person?.Description);
-        }
+        /* Then */
+        Assert.NotNull(document.Imports);
+        Assert.Equal(2, document.Imports.Count);
+        var person = Assert.Single(document?.TypeDefinitions?.OfType<ObjectDefinition>() ??
+                                   Enumerable.Empty<ObjectDefinition>());
+        Assert.Equal("Description", person?.Description);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/TypeSystemParserFacts.cs b/tests/graphql.language.tests/TypeSystemParserFacts.cs
index 1549d3ae4..2b8475409 100644
--- a/tests/graphql.language.tests/TypeSystemParserFacts.cs
+++ b/tests/graphql.language.tests/TypeSystemParserFacts.cs
@@ -3,297 +3,297 @@
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests
+namespace Tanka.GraphQL.Language.Tests;
+
+public class TypeSystemParserFacts
 {
-    public class TypeSystemParserFacts
-    {
-        [Fact]
-        public void DirectiveDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("directive @name on QUERY");
-
-            /* When */
-            var definition = sut.ParseDirectiveDefinition();
-
-            /* Then */
-            Assert.Equal("name", definition.Name);
-            Assert.False(definition.IsRepeatable);
-            Assert.Null(definition.Description);
-        }
-
-        [Fact]
-        public void DirectiveDefinition_Arguments()
-        {
-            /* Given */
-            var sut = Parser.Create("directive @name(a:Int, b:Float) on QUERY");
-
-            /* When */
-            var definition = sut.ParseDirectiveDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Arguments?.Count);
-        }
-
-        [Fact]
-        public void DirectiveDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void DirectiveDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("directive @name on QUERY");
+
+        /* When */
+        var definition = sut.ParseDirectiveDefinition();
+
+        /* Then */
+        Assert.Equal("name", definition.Name);
+        Assert.False(definition.IsRepeatable);
+        Assert.Null(definition.Description);
+    }
+
+    [Fact]
+    public void DirectiveDefinition_Arguments()
+    {
+        /* Given */
+        var sut = Parser.Create("directive @name(a:Int, b:Float) on QUERY");
+
+        /* When */
+        var definition = sut.ParseDirectiveDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Arguments?.Count);
+    }
+
+    [Fact]
+    public void DirectiveDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 directive @name repeatable on MUTATION");
 
-            /* When */
-            var definition = sut.ParseDirectiveDefinition();
-
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
-
-        [Fact]
-        public void DirectiveDefinition_Location()
-        {
-            /* Given */
-            var sut = Parser.Create("directive @name on MUTATION");
-
-            /* When */
-            var definition = sut.ParseDirectiveDefinition();
-
-            /* Then */
-            Assert.Single(definition.DirectiveLocations, ExecutableDirectiveLocations.MUTATION);
-        }
-
-        [Fact]
-        public void DirectiveDefinition_Repeatable()
-        {
-            /* Given */
-            var sut = Parser.Create("directive @name repeatable on MUTATION");
-
-            /* When */
-            var definition = sut.ParseDirectiveDefinition();
-
-            /* Then */
-            Assert.True(definition.IsRepeatable);
-        }
-
-        [Theory]
-        [InlineData("on FIELD", ExecutableDirectiveLocations.FIELD)]
-        [InlineData("on | FIELD", ExecutableDirectiveLocations.FIELD)]
-        [InlineData("on FIELD | QUERY", ExecutableDirectiveLocations.FIELD)]
-        [InlineData("on UNION | SCHEMA | FIELD", ExecutableDirectiveLocations.FIELD)]
-        public void DirectiveLocations(string source, string expectedLocation)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var locations = sut.ParseDirectiveLocations();
-
-            /* Then */
-            Assert.Single(locations, expectedLocation);
-        }
-
-        [Fact]
-        public void ScalarDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("scalar Name");
-
-            /* When */
-            var definition = sut.ParseScalarDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Directives);
-        }
-
-        [Fact]
-        public void ScalarDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseDirectiveDefinition();
+
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
+
+    [Fact]
+    public void DirectiveDefinition_Location()
+    {
+        /* Given */
+        var sut = Parser.Create("directive @name on MUTATION");
+
+        /* When */
+        var definition = sut.ParseDirectiveDefinition();
+
+        /* Then */
+        Assert.Single(definition.DirectiveLocations, ExecutableDirectiveLocations.MUTATION);
+    }
+
+    [Fact]
+    public void DirectiveDefinition_Repeatable()
+    {
+        /* Given */
+        var sut = Parser.Create("directive @name repeatable on MUTATION");
+
+        /* When */
+        var definition = sut.ParseDirectiveDefinition();
+
+        /* Then */
+        Assert.True(definition.IsRepeatable);
+    }
+
+    [Theory]
+    [InlineData("on FIELD", ExecutableDirectiveLocations.FIELD)]
+    [InlineData("on | FIELD", ExecutableDirectiveLocations.FIELD)]
+    [InlineData("on FIELD | QUERY", ExecutableDirectiveLocations.FIELD)]
+    [InlineData("on UNION | SCHEMA | FIELD", ExecutableDirectiveLocations.FIELD)]
+    public void DirectiveLocations(string source, string expectedLocation)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var locations = sut.ParseDirectiveLocations();
+
+        /* Then */
+        Assert.Single(locations, expectedLocation);
+    }
+
+    [Fact]
+    public void ScalarDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("scalar Name");
+
+        /* When */
+        var definition = sut.ParseScalarDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Directives);
+    }
+
+    [Fact]
+    public void ScalarDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 Description
 """"""
 scalar Name");
 
-            /* When */
-            var definition = sut.ParseScalarDefinition();
-
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
-
-        [Fact]
-        public void ScalarDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("scalar Name @a @b");
-
-            /* When */
-            var definition = sut.ParseScalarDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
-
-        [Fact]
-        public void FieldDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("name: Int");
-
-            /* When */
-            var definition = sut.ParseFieldDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("name", definition.Name);
-            var namedType = Assert.IsType<NamedType>(definition.Type);
-            Assert.Equal("Int", namedType.Name);
-            Assert.Null(definition.Directives);
-        }
-
-        [Fact]
-        public void FieldDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseScalarDefinition();
+
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
+
+    [Fact]
+    public void ScalarDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("scalar Name @a @b");
+
+        /* When */
+        var definition = sut.ParseScalarDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
+
+    [Fact]
+    public void FieldDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("name: Int");
+
+        /* When */
+        var definition = sut.ParseFieldDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("name", definition.Name);
+        var namedType = Assert.IsType<NamedType>(definition.Type);
+        Assert.Equal("Int", namedType.Name);
+        Assert.Null(definition.Directives);
+    }
+
+    [Fact]
+    public void FieldDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 name: Int");
 
-            /* When */
-            var definition = sut.ParseFieldDefinition();
-
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
-
-        [Fact]
-        public void FieldDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("name: Int @a @b @c");
-
-            /* When */
-            var definition = sut.ParseFieldDefinition();
-
-            /* Then */
-            Assert.Equal(3, definition.Directives?.Count);
-        }
-
-        [Fact]
-        public void FieldDefinition_Arguments()
-        {
-            /* Given */
-            var sut = Parser.Create("name(a: Int!, b: custom):Int");
-
-            /* When */
-            var definition = sut.ParseFieldDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Arguments?.Count);
-        }
-
-        [Theory]
-        [InlineData("implements Name", "Name")]
-        [InlineData("implements & Name", "Name")]
-        [InlineData("implements A & B", "A")]
-        [InlineData("implements A & B", "B")]
-        public void ImplementsInterfaces(string source, string expectedInterface)
-        {
-            /* Given */
-            var sut = Parser.Create(source);
-
-            /* When */
-            var interfaces = sut.ParseOptionalImplementsInterfaces();
-
-            /* Then */
-            Assert.NotNull(interfaces);
-            Assert.Single(interfaces, i => (string)i.Name == expectedInterface);
-        }
-
-        [Fact]
-        public void ObjectDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("type Name");
-
-            /* When */
-            var definition = sut.ParseObjectDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Interfaces);
-            Assert.Null(definition.Directives);
-            Assert.Null(definition.Fields);
-        }
-
-        [Fact]
-        public void ObjectDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseFieldDefinition();
+
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
+
+    [Fact]
+    public void FieldDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("name: Int @a @b @c");
+
+        /* When */
+        var definition = sut.ParseFieldDefinition();
+
+        /* Then */
+        Assert.Equal(3, definition.Directives?.Count);
+    }
+
+    [Fact]
+    public void FieldDefinition_Arguments()
+    {
+        /* Given */
+        var sut = Parser.Create("name(a: Int!, b: custom):Int");
+
+        /* When */
+        var definition = sut.ParseFieldDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Arguments?.Count);
+    }
+
+    [Theory]
+    [InlineData("implements Name", "Name")]
+    [InlineData("implements & Name", "Name")]
+    [InlineData("implements A & B", "A")]
+    [InlineData("implements A & B", "B")]
+    public void ImplementsInterfaces(string source, string expectedInterface)
+    {
+        /* Given */
+        var sut = Parser.Create(source);
+
+        /* When */
+        var interfaces = sut.ParseOptionalImplementsInterfaces();
+
+        /* Then */
+        Assert.NotNull(interfaces);
+        Assert.Single(interfaces, i => (string)i.Name == expectedInterface);
+    }
+
+    [Fact]
+    public void ObjectDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("type Name");
+
+        /* When */
+        var definition = sut.ParseObjectDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Interfaces);
+        Assert.Null(definition.Directives);
+        Assert.Null(definition.Fields);
+    }
+
+    [Fact]
+    public void ObjectDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 type Name");
 
-            /* When */
-            var definition = sut.ParseObjectDefinition();
+        /* When */
+        var definition = sut.ParseObjectDefinition();
 
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Interfaces()
-        {
-            /* Given */
-            var sut = Parser.Create("type Name implements Interface");
+    [Fact]
+    public void ObjectDefinition_Interfaces()
+    {
+        /* Given */
+        var sut = Parser.Create("type Name implements Interface");
 
-            /* When */
-            var definition = sut.ParseObjectDefinition();
+        /* When */
+        var definition = sut.ParseObjectDefinition();
 
-            /* Then */
-            Assert.Equal(1, definition.Interfaces?.Count);
-        }
+        /* Then */
+        Assert.Equal(1, definition.Interfaces?.Count);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("type Name @a @b");
+    [Fact]
+    public void ObjectDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("type Name @a @b");
 
-            /* When */
-            var definition = sut.ParseObjectDefinition();
+        /* When */
+        var definition = sut.ParseObjectDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
 
-        [Fact]
-        public void ObjectDefinition_Fields()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void ObjectDefinition_Fields()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 type Name {
     name: String
     version(includePreviews: Boolean): Float
 }");
 
-            /* When */
-            var definition = sut.ParseObjectDefinition();
+        /* When */
+        var definition = sut.ParseObjectDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Fields?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Fields?.Count);
+    }
 
-        [Fact]
-        public void ObjectDefinition_All()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void ObjectDefinition_All()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
   Description
 """"""
@@ -302,97 +302,97 @@ type Name implements A & B @a @b  {
     version(includePreviews: Boolean): Float
 }");
 
-            /* When */
-            var definition = sut.ParseObjectDefinition();
-
-            /* Then */
-            Assert.NotNull(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.NotNull(definition.Interfaces);
-            Assert.NotNull(definition.Directives);
-            Assert.NotNull(definition.Fields);
-        }
-
-        [Fact]
-        public void InterfaceDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("interface Name");
-
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Interfaces);
-            Assert.Null(definition.Directives);
-            Assert.Null(definition.Fields);
-        }
-
-        [Fact]
-        public void InterfaceDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseObjectDefinition();
+
+        /* Then */
+        Assert.NotNull(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.NotNull(definition.Interfaces);
+        Assert.NotNull(definition.Directives);
+        Assert.NotNull(definition.Fields);
+    }
+
+    [Fact]
+    public void InterfaceDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("interface Name");
+
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Interfaces);
+        Assert.Null(definition.Directives);
+        Assert.Null(definition.Fields);
+    }
+
+    [Fact]
+    public void InterfaceDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 interface Name");
 
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
 
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Interfaces()
-        {
-            /* Given */
-            var sut = Parser.Create("interface Name implements Interface");
+    [Fact]
+    public void InterfaceDefinition_Interfaces()
+    {
+        /* Given */
+        var sut = Parser.Create("interface Name implements Interface");
 
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
 
-            /* Then */
-            Assert.Equal(1, definition.Interfaces?.Count);
-        }
+        /* Then */
+        Assert.Equal(1, definition.Interfaces?.Count);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("interface Name @a @b");
+    [Fact]
+    public void InterfaceDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("interface Name @a @b");
 
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_Fields()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void InterfaceDefinition_Fields()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 interface Name {
     name: String
     version(includePreviews: Boolean): Float
 }");
 
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Fields?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Fields?.Count);
+    }
 
-        [Fact]
-        public void InterfaceDefinition_All()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void InterfaceDefinition_All()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
   Description
 """"""
@@ -401,217 +401,217 @@ interface Name implements A & B @a @b  {
     version(includePreviews: Boolean): Float
 }");
 
-            /* When */
-            var definition = sut.ParseInterfaceDefinition();
-
-            /* Then */
-            Assert.NotNull(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.NotNull(definition.Interfaces);
-            Assert.NotNull(definition.Directives);
-            Assert.NotNull(definition.Fields);
-        }
-
-        [Fact]
-        public void UnionDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("union Name");
-
-            /* When */
-            var definition = sut.ParseUnionDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Members);
-            Assert.Null(definition.Directives);
-        }
-
-        [Fact]
-        public void UnionDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseInterfaceDefinition();
+
+        /* Then */
+        Assert.NotNull(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.NotNull(definition.Interfaces);
+        Assert.NotNull(definition.Directives);
+        Assert.NotNull(definition.Fields);
+    }
+
+    [Fact]
+    public void UnionDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("union Name");
+
+        /* When */
+        var definition = sut.ParseUnionDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Members);
+        Assert.Null(definition.Directives);
+    }
+
+    [Fact]
+    public void UnionDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 union Name");
 
-            /* When */
-            var definition = sut.ParseUnionDefinition();
+        /* When */
+        var definition = sut.ParseUnionDefinition();
 
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
 
-        [Fact]
-        public void UnionDefinition_Members()
-        {
-            /* Given */
-            var sut = Parser.Create("union Name = A | B");
+    [Fact]
+    public void UnionDefinition_Members()
+    {
+        /* Given */
+        var sut = Parser.Create("union Name = A | B");
 
-            /* When */
-            var definition = sut.ParseUnionDefinition();
+        /* When */
+        var definition = sut.ParseUnionDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Members?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Members?.Count);
+    }
 
-        [Fact]
-        public void UnionDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("union Name @a @b");
+    [Fact]
+    public void UnionDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("union Name @a @b");
 
-            /* When */
-            var definition = sut.ParseUnionDefinition();
+        /* When */
+        var definition = sut.ParseUnionDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
 
-        [Fact]
-        public void UnionDefinition_All()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void UnionDefinition_All()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
   Description
 """"""
 union Name @a @b = A | B");
 
-            /* When */
-            var definition = sut.ParseUnionDefinition();
-
-            /* Then */
-            Assert.NotNull(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.NotNull(definition.Members);
-            Assert.NotNull(definition.Directives);
-        }
-
-        [Fact]
-        public void EnumDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("enum Name");
-
-            /* When */
-            var definition = sut.ParseEnumDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Values);
-            Assert.Null(definition.Directives);
-        }
-
-        [Fact]
-        public void EnumDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseUnionDefinition();
+
+        /* Then */
+        Assert.NotNull(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.NotNull(definition.Members);
+        Assert.NotNull(definition.Directives);
+    }
+
+    [Fact]
+    public void EnumDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("enum Name");
+
+        /* When */
+        var definition = sut.ParseEnumDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Values);
+        Assert.Null(definition.Directives);
+    }
+
+    [Fact]
+    public void EnumDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 enum Name");
 
-            /* When */
-            var definition = sut.ParseEnumDefinition();
-
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
-
-        [Fact]
-        public void EnumDefinition_Values()
-        {
-            /* Given */
-            var sut = Parser.Create("enum Name { A B }");
-
-            /* When */
-            var definition = sut.ParseEnumDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Values?.Count);
-        }
-
-        [Fact]
-        public void EnumDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("enum Name @a @b");
-
-            /* When */
-            var definition = sut.ParseEnumDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
-
-        [Fact]
-        public void InputObjectDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("input Name");
-
-            /* When */
-            var definition = sut.ParseInputObjectDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.Null(definition.Directives);
-            Assert.Null(definition.Fields);
-        }
-
-        [Fact]
-        public void InputObjectDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseEnumDefinition();
+
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
+
+    [Fact]
+    public void EnumDefinition_Values()
+    {
+        /* Given */
+        var sut = Parser.Create("enum Name { A B }");
+
+        /* When */
+        var definition = sut.ParseEnumDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Values?.Count);
+    }
+
+    [Fact]
+    public void EnumDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("enum Name @a @b");
+
+        /* When */
+        var definition = sut.ParseEnumDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
+
+    [Fact]
+    public void InputObjectDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("input Name");
+
+        /* When */
+        var definition = sut.ParseInputObjectDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.Null(definition.Directives);
+        Assert.Null(definition.Fields);
+    }
+
+    [Fact]
+    public void InputObjectDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 input Name");
 
-            /* When */
-            var definition = sut.ParseInputObjectDefinition();
+        /* When */
+        var definition = sut.ParseInputObjectDefinition();
 
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("input Name @a @b");
+    [Fact]
+    public void InputObjectDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("input Name @a @b");
 
-            /* When */
-            var definition = sut.ParseInputObjectDefinition();
+        /* When */
+        var definition = sut.ParseInputObjectDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_Fields()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void InputObjectDefinition_Fields()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 input Name {
     name: String
     version: Float
 }");
 
-            /* When */
-            var definition = sut.ParseInputObjectDefinition();
+        /* When */
+        var definition = sut.ParseInputObjectDefinition();
 
-            /* Then */
-            Assert.Equal(2, definition.Fields?.Count);
-        }
+        /* Then */
+        Assert.Equal(2, definition.Fields?.Count);
+    }
 
-        [Fact]
-        public void InputObjectDefinition_All()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+    [Fact]
+    public void InputObjectDefinition_All()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
   Description
 """"""
@@ -620,81 +620,81 @@ input Name @a @b  {
     version: Float
 }");
 
-            /* When */
-            var definition = sut.ParseInputObjectDefinition();
-
-            /* Then */
-            Assert.NotNull(definition.Description);
-            Assert.Equal("Name", definition.Name);
-            Assert.NotNull(definition.Directives);
-            Assert.NotNull(definition.Fields);
-        }
-
-        [Fact]
-        public void SchemaDefinition()
-        {
-            /* Given */
-            var sut = Parser.Create("schema { query: TypeName }");
-            
-            /* When */
-            var definition = sut.ParseSchemaDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Null(definition.Directives);
-            Assert.Single(definition.Operations, op => op.OperationType == OperationType.Query);
-        }
-
-        [Fact]
-        public void SchemaDefinition_Description()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var definition = sut.ParseInputObjectDefinition();
+
+        /* Then */
+        Assert.NotNull(definition.Description);
+        Assert.Equal("Name", definition.Name);
+        Assert.NotNull(definition.Directives);
+        Assert.NotNull(definition.Fields);
+    }
+
+    [Fact]
+    public void SchemaDefinition()
+    {
+        /* Given */
+        var sut = Parser.Create("schema { query: TypeName }");
+
+        /* When */
+        var definition = sut.ParseSchemaDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Null(definition.Directives);
+        Assert.Single(definition.Operations, op => op.OperationType == OperationType.Query);
+    }
+
+    [Fact]
+    public void SchemaDefinition_Description()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 ""Description""
 schema { query: TypeName }");
-            
-            /* When */
-            var definition = sut.ParseSchemaDefinition();
-
-            /* Then */
-            Assert.Equal("Description", definition.Description);
-        }
-
-        [Fact]
-        public void SchemaDefinition_Directives()
-        {
-            /* Given */
-            var sut = Parser.Create("schema @a @b { query: TypeName }");
-            
-            /* When */
-            var definition = sut.ParseSchemaDefinition();
-
-            /* Then */
-            Assert.Equal(2, definition.Directives?.Count);
-        }
-
-        [Fact]
-        public void SchemaDefinition_AllRootTypes()
-        {
-            /* Given */
-            var sut = Parser.Create("schema { query: Query mutation: Mutation subscription: Subscription }");
-            
-            /* When */
-            var definition = sut.ParseSchemaDefinition();
-
-            /* Then */
-            Assert.Null(definition.Description);
-            Assert.Null(definition.Directives);
-            Assert.Single(definition.Operations, op => op.OperationType == OperationType.Query);
-            Assert.Single(definition.Operations, op => op.OperationType == OperationType.Mutation);
-            Assert.Single(definition.Operations, op => op.OperationType == OperationType.Subscription);
-        }
-
-        [Fact]
-        public void TypeSystemDocument_TypeDefinitions()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+
+        /* When */
+        var definition = sut.ParseSchemaDefinition();
+
+        /* Then */
+        Assert.Equal("Description", definition.Description);
+    }
+
+    [Fact]
+    public void SchemaDefinition_Directives()
+    {
+        /* Given */
+        var sut = Parser.Create("schema @a @b { query: TypeName }");
+
+        /* When */
+        var definition = sut.ParseSchemaDefinition();
+
+        /* Then */
+        Assert.Equal(2, definition.Directives?.Count);
+    }
+
+    [Fact]
+    public void SchemaDefinition_AllRootTypes()
+    {
+        /* Given */
+        var sut = Parser.Create("schema { query: Query mutation: Mutation subscription: Subscription }");
+
+        /* When */
+        var definition = sut.ParseSchemaDefinition();
+
+        /* Then */
+        Assert.Null(definition.Description);
+        Assert.Null(definition.Directives);
+        Assert.Single(definition.Operations, op => op.OperationType == OperationType.Query);
+        Assert.Single(definition.Operations, op => op.OperationType == OperationType.Mutation);
+        Assert.Single(definition.Operations, op => op.OperationType == OperationType.Subscription);
+    }
+
+    [Fact]
+    public void TypeSystemDocument_TypeDefinitions()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 Scalar
 """"""
@@ -739,52 +739,52 @@ input Input {
 }
             ");
 
-            /* When */
-            var document = sut.ParseTypeSystemDocument();
-
-            /* Then */
-            Assert.NotNull(document.TypeDefinitions);
-            Assert.NotEmpty(document.TypeDefinitions);
-
-            // scalar
-            Assert.Single(document.TypeDefinitions,
-                type => type is ScalarDefinition scalar
-                && scalar.Description == "Scalar");
-
-            // object
-            Assert.Single(document.TypeDefinitions,
-                type => type is ObjectDefinition obj
-                        && obj.Description == "Object");
-
-            // interface
-            Assert.Single(document.TypeDefinitions,
-                type => type is InterfaceDefinition inf
-                        && inf.Description == "Interface"
-                        && inf.Fields?.Single().Description == "Field");
-            
-            // union
-            Assert.Single(document.TypeDefinitions,
-                type => type is UnionDefinition union
-                        && union.Description == "Union");
-
-            // enum
-            Assert.Single(document.TypeDefinitions,
-                type => type is EnumDefinition en
-                        && en.Description == "Enum"
-                        && en.Values?.Last().Description == "B");
-
-            // input
-            Assert.Single(document.TypeDefinitions,
-                type => type is InputObjectDefinition input
-                        && input.Description == "Input"
-                        && input.Fields?.Single().Description == "Field");
-        }
-
-        [Fact]
-        public void TypeSystemDocument_TypeExtensions()
-        {
-            /* Given */
-            var sut = Parser.Create(@"
+        /* When */
+        var document = sut.ParseTypeSystemDocument();
+
+        /* Then */
+        Assert.NotNull(document.TypeDefinitions);
+        Assert.NotEmpty(document.TypeDefinitions);
+
+        // scalar
+        Assert.Single(document.TypeDefinitions,
+            type => type is ScalarDefinition scalar
+                    && scalar.Description == "Scalar");
+
+        // object
+        Assert.Single(document.TypeDefinitions,
+            type => type is ObjectDefinition obj
+                    && obj.Description == "Object");
+
+        // interface
+        Assert.Single(document.TypeDefinitions,
+            type => type is InterfaceDefinition inf
+                    && inf.Description == "Interface"
+                    && inf.Fields?.Single().Description == "Field");
+
+        // union
+        Assert.Single(document.TypeDefinitions,
+            type => type is UnionDefinition union
+                    && union.Description == "Union");
+
+        // enum
+        Assert.Single(document.TypeDefinitions,
+            type => type is EnumDefinition en
+                    && en.Description == "Enum"
+                    && en.Values?.Last().Description == "B");
+
+        // input
+        Assert.Single(document.TypeDefinitions,
+            type => type is InputObjectDefinition input
+                    && input.Description == "Input"
+                    && input.Fields?.Single().Description == "Field");
+    }
+
+    [Fact]
+    public void TypeSystemDocument_TypeExtensions()
+    {
+        /* Given */
+        var sut = Parser.Create(@"
 """"""
 Scalar
 """"""
@@ -829,45 +829,44 @@ extend input Input {
 }
             ");
 
-            /* When */
-            var document = sut.ParseTypeSystemDocument();
-
-            /* Then */
-            Assert.NotNull(document.TypeExtensions);
-            Assert.NotEmpty(document.TypeExtensions);
-
-            // scalar
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is ScalarDefinition scalar
-                && scalar.Description == "Scalar");
-
-            // object
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is ObjectDefinition obj
-                        && obj.Description == "Object");
-
-            // interface
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is InterfaceDefinition inf
-                        && inf.Description == "Interface"
-                        && inf.Fields?.Single().Description == "Field");
-            
-            // union
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is UnionDefinition union
-                        && union.Description == "Union");
-
-            // enum
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is EnumDefinition en
-                        && en.Description == "Enum"
-                        && en.Values?.Last().Description == "B");
-
-            // input
-            Assert.Single(document.TypeExtensions,
-                type => type.Definition is InputObjectDefinition input
-                        && input.Description == "Input"
-                        && input.Fields?.Single().Description == "Field");
-        }
+        /* When */
+        var document = sut.ParseTypeSystemDocument();
+
+        /* Then */
+        Assert.NotNull(document.TypeExtensions);
+        Assert.NotEmpty(document.TypeExtensions);
+
+        // scalar
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is ScalarDefinition scalar
+                    && scalar.Description == "Scalar");
+
+        // object
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is ObjectDefinition obj
+                    && obj.Description == "Object");
+
+        // interface
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is InterfaceDefinition inf
+                    && inf.Description == "Interface"
+                    && inf.Fields?.Single().Description == "Field");
+
+        // union
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is UnionDefinition union
+                    && union.Description == "Union");
+
+        // enum
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is EnumDefinition en
+                    && en.Description == "Enum"
+                    && en.Values?.Last().Description == "B");
+
+        // input
+        Assert.Single(document.TypeExtensions,
+            type => type.Definition is InputObjectDefinition input
+                    && input.Description == "Input"
+                    && input.Fields?.Single().Description == "Field");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.language.tests/Visitors/ReadOnlyExecutionDocumentWalkerFacts.cs b/tests/graphql.language.tests/Visitors/ReadOnlyExecutionDocumentWalkerFacts.cs
index 98a614aed..8fe92e5dc 100644
--- a/tests/graphql.language.tests/Visitors/ReadOnlyExecutionDocumentWalkerFacts.cs
+++ b/tests/graphql.language.tests/Visitors/ReadOnlyExecutionDocumentWalkerFacts.cs
@@ -3,134 +3,133 @@
 using Tanka.GraphQL.Language.Visitors;
 using Xunit;
 
-namespace Tanka.GraphQL.Language.Tests.Visitors
+namespace Tanka.GraphQL.Language.Tests.Visitors;
+
+public class ReadOnlyExecutionDocumentWalkerFacts
 {
-    public class ReadOnlyExecutionDocumentWalkerFacts
+    [Fact]
+    public void ExecutableDocument_EnterAndLeave()
+    {
+        /* Given */
+        ExecutableDocument document = @"";
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(document);
+
+        /* Then */
+        visitor.Received().Enter(document);
+        visitor.Received().Leave(document);
+    }
+
+    [Fact]
+    public void FieldSelection_EnterAndLeave()
+    {
+        /* Given */
+        var selection = Parser.Create("field").ParseFieldSelection();
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(selection);
+
+        /* Then */
+        visitor.Received().Enter(selection);
+        visitor.Received().Leave(selection);
+    }
+
+    [Fact]
+    public void FragmentDefinition_EnterAndLeave()
+    {
+        /* Given */
+        FragmentDefinition definition = @"fragment Name on Human { field }";
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(definition);
+
+        /* Then */
+        visitor.Received().Enter(definition);
+        visitor.Received().Leave(definition);
+    }
+
+    [Fact]
+    public void FragmentSpread_EnterAndLeave()
+    {
+        /* Given */
+        var selection = Parser.Create("...name").ParseFragmentSpread();
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(selection);
+
+        /* Then */
+        visitor.Received().Enter(selection);
+        visitor.Received().Leave(selection);
+    }
+
+    [Fact]
+    public void InlineFragment_EnterAndLeave()
+    {
+        /* Given */
+        var selection = Parser.Create("...{ field }").ParseInlineFragment();
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(selection);
+
+        /* Then */
+        visitor.Received().Enter(selection);
+        visitor.Received().Leave(selection);
+    }
+
+    [Fact]
+    public void OperationDefinition_EnterAndLeave()
+    {
+        /* Given */
+        OperationDefinition definition = @"{ field }";
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(definition);
+
+        /* Then */
+        visitor.Received().Enter(definition);
+        visitor.Received().Leave(definition);
+    }
+
+    [Fact]
+    public void SelectionSet_EnterAndLeave()
     {
-        [Fact]
-        public void ExecutableDocument_EnterAndLeave()
-        {
-            /* Given */
-            ExecutableDocument document = @"";
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(document);
-
-            /* Then */
-            visitor.Received().Enter(document);
-            visitor.Received().Leave(document);
-        }
-
-        [Fact]
-        public void FieldSelection_EnterAndLeave()
-        {
-            /* Given */
-            var selection = Parser.Create("field").ParseFieldSelection();
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(selection);
-
-            /* Then */
-            visitor.Received().Enter(selection);
-            visitor.Received().Leave(selection);
-        }
-
-        [Fact]
-        public void FragmentDefinition_EnterAndLeave()
-        {
-            /* Given */
-            FragmentDefinition definition = @"fragment Name on Human { field }";
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(definition);
-
-            /* Then */
-            visitor.Received().Enter(definition);
-            visitor.Received().Leave(definition);
-        }
-
-        [Fact]
-        public void FragmentSpread_EnterAndLeave()
-        {
-            /* Given */
-            var selection = Parser.Create("...name").ParseFragmentSpread();
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(selection);
-
-            /* Then */
-            visitor.Received().Enter(selection);
-            visitor.Received().Leave(selection);
-        }
-
-        [Fact]
-        public void InlineFragment_EnterAndLeave()
-        {
-            /* Given */
-            var selection = Parser.Create("...{ field }").ParseInlineFragment();
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(selection);
-
-            /* Then */
-            visitor.Received().Enter(selection);
-            visitor.Received().Leave(selection);
-        }
-
-        [Fact]
-        public void OperationDefinition_EnterAndLeave()
-        {
-            /* Given */
-            OperationDefinition definition = @"{ field }";
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(definition);
-
-            /* Then */
-            visitor.Received().Enter(definition);
-            visitor.Received().Leave(definition);
-        }
-
-        [Fact]
-        public void SelectionSet_EnterAndLeave()
-        {
-            /* Given */
-            var definition = Parser.Create("{ field }").ParseSelectionSet();
-
-            var visitor = Substitute.For<VisitAllBase>();
-            var sut = new ReadOnlyExecutionDocumentWalker(
-                new ExecutionDocumentWalkerOptions().Add(visitor));
-
-            /* When */
-            sut.Visit(definition);
-
-            /* Then */
-            visitor.Received().Enter(definition);
-            visitor.Received().Leave(definition);
-        }
+        /* Given */
+        var definition = Parser.Create("{ field }").ParseSelectionSet();
+
+        var visitor = Substitute.For<VisitAllBase>();
+        var sut = new ReadOnlyExecutionDocumentWalker(
+            new ExecutionDocumentWalkerOptions().Add(visitor));
+
+        /* When */
+        sut.Visit(definition);
+
+        /* Then */
+        visitor.Received().Enter(definition);
+        visitor.Received().Leave(definition);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
index 84c651ec1..67d0728b5 100644
--- a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
+++ b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
@@ -1,34 +1,33 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text.Json;
 using Tanka.GraphQL.Server.Links.DTOs;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests.DTOs
+namespace Tanka.GraphQL.Server.Links.Tests.DTOs;
+
+public class ObjectDictionaryConverterFacts
 {
-    public class ObjectDictionaryConverterFacts
-    {
-        private readonly JsonSerializerOptions _options;
+    private readonly JsonSerializerOptions _options;
 
-        public ObjectDictionaryConverterFacts()
+    public ObjectDictionaryConverterFacts()
+    {
+        _options = new JsonSerializerOptions
         {
-            _options = new JsonSerializerOptions()
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+            WriteIndented = true,
+            IgnoreNullValues = false,
+            Converters =
             {
-                PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-                WriteIndented = true,
-                IgnoreNullValues = false,
-                Converters =
-                {
-                    new ObjectDictionaryConverter()
-                }
-            };
-        }
+                new ObjectDictionaryConverter()
+            }
+        };
+    }
 
-        [Fact]
-        public void Deserialize_SimpleValues()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_SimpleValues()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""int"": 123,
                     ""double"": 123.456,
@@ -37,74 +36,74 @@ public void Deserialize_SimpleValues()
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.Equal(123, actual["int"]);
-            Assert.Equal(123.456, actual["double"]);
-            Assert.Equal("string", actual["string"]);
-            Assert.Equal(true, actual["bool"]);
-        }
+        /* Then */
+        Assert.Equal(123, actual["int"]);
+        Assert.Equal(123.456, actual["double"]);
+        Assert.Equal("string", actual["string"]);
+        Assert.Equal(true, actual["bool"]);
+    }
 
-        [Fact]
-        public void Deserialize_Simple_Null()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_Simple_Null()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""string"": null
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.Null(actual["string"]);
-        }
+        /* Then */
+        Assert.Null(actual["string"]);
+    }
 
-        [Fact]
-        public void Deserialize_Array()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_Array()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""values"": [1, 2, 3]
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.NotNull(actual["values"]);
-        }
+        /* Then */
+        Assert.NotNull(actual["values"]);
+    }
 
-        [Fact]
-        public void Deserialize_Array_in_Array()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_Array_in_Array()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""values"": [[1,2,3]]
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.NotNull(actual["values"]);
-            var values = actual["values"];
-            Assert.IsAssignableFrom<IEnumerable<object>>(values);
-        }
+        /* Then */
+        Assert.NotNull(actual["values"]);
+        var values = actual["values"];
+        Assert.IsAssignableFrom<IEnumerable<object>>(values);
+    }
 
-        [Fact]
-        public void Deserialize_ComplexValue()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_ComplexValue()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""complex"": {
                         ""int"": 123,
@@ -115,23 +114,23 @@ public void Deserialize_ComplexValue()
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.IsAssignableFrom<IDictionary<string, object>>(actual["complex"]);
-            var complex = (IDictionary<string, object>)actual["complex"];
-            Assert.Equal(123, complex["int"]);
-            Assert.Equal(123.456, complex["double"]);
-            Assert.Equal("string", complex["string"]);
-            Assert.Equal(true, complex["bool"]);
-        }
+        /* Then */
+        Assert.IsAssignableFrom<IDictionary<string, object>>(actual["complex"]);
+        var complex = (IDictionary<string, object>)actual["complex"];
+        Assert.Equal(123, complex["int"]);
+        Assert.Equal(123.456, complex["double"]);
+        Assert.Equal("string", complex["string"]);
+        Assert.Equal(true, complex["bool"]);
+    }
 
-        [Fact]
-        public void Deserialize_MixedValue()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_MixedValue()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""int"": 123,
                     ""complex"": {
@@ -144,26 +143,26 @@ public void Deserialize_MixedValue()
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Dictionary<string, object>>(json, _options);
 
-            /* Then */
-            Assert.Equal(123, actual["int"]);
-            Assert.Equal(true, actual["bool"]);
+        /* Then */
+        Assert.Equal(123, actual["int"]);
+        Assert.Equal(true, actual["bool"]);
 
-            Assert.IsAssignableFrom<IDictionary<string, object>>(actual["complex"]);
-            var complex = (IDictionary<string, object>)actual["complex"];
-            Assert.Equal(123, complex["int"]);
-            Assert.Equal(123.456, complex["double"]);
-            Assert.Equal("string", complex["string"]);
-            Assert.Equal(true, complex["bool"]);
-        }
+        Assert.IsAssignableFrom<IDictionary<string, object>>(actual["complex"]);
+        var complex = (IDictionary<string, object>)actual["complex"];
+        Assert.Equal(123, complex["int"]);
+        Assert.Equal(123.456, complex["double"]);
+        Assert.Equal("string", complex["string"]);
+        Assert.Equal(true, complex["bool"]);
+    }
 
-        [Fact]
-        public void Deserialize_Nested_SimpleValues()
-        {
-            /* Given */
-            var json = @"
+    [Fact]
+    public void Deserialize_Nested_SimpleValues()
+    {
+        /* Given */
+        var json = @"
                 {
                     ""value1"": ""string"",
                     ""dictionary"": {
@@ -176,58 +175,58 @@ public void Deserialize_Nested_SimpleValues()
                 }
             ";
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<Nested>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<Nested>(json, _options);
 
-            /* Then */
-            Assert.Equal("string", actual.Value1);
-            Assert.Equal(123, actual.Value2);
-        }
+        /* Then */
+        Assert.Equal("string", actual.Value1);
+        Assert.Equal(123, actual.Value2);
+    }
 
-        [Fact]
-        public void Serialize_SimpleValues()
+    [Fact]
+    public void Serialize_SimpleValues()
+    {
+        /* Given */
+        var source = new Nested
         {
-            /* Given */
-            var source = new Nested() 
-            {
-                Value2 = 123,
-                Value1 = null
-            };
+            Value2 = 123,
+            Value1 = null
+        };
 
-            /* When */
-            var json = JsonSerializer.Serialize(source, _options);
+        /* When */
+        var json = JsonSerializer.Serialize(source, _options);
 
-            /* Then */
-            Assert.Equal(
-                @"{
+        /* Then */
+        Assert.Equal(
+            @"{
   ""value1"": null,
   ""dictionary"": null,
   ""value2"": 123
 }".Trim(),
-                json);
-        }
+            json);
+    }
 
-        [Fact]
-        public void Serialize_Nested_SimpleValues()
+    [Fact]
+    public void Serialize_Nested_SimpleValues()
+    {
+        /* Given */
+        var source = new Nested
         {
-            /* Given */
-            var source = new Nested()
+            Dictionary = new Dictionary<string, object>
             {
-                Dictionary = new Dictionary<string, object>()
-                {
-                    ["int"] = 123,
-                    ["string"] ="string"
-                },
-                Value2 = 123,
-                Value1 = "string"
-            };
-
-            /* When */
-            var json = JsonSerializer.Serialize(source, _options);
-
-            /* Then */
-            Assert.Equal(
-                @"{
+                ["int"] = 123,
+                ["string"] = "string"
+            },
+            Value2 = 123,
+            Value1 = "string"
+        };
+
+        /* When */
+        var json = JsonSerializer.Serialize(source, _options);
+
+        /* Then */
+        Assert.Equal(
+            @"{
   ""value1"": ""string"",
   ""dictionary"": {
     ""int"": 123,
@@ -235,63 +234,63 @@ public void Serialize_Nested_SimpleValues()
   },
   ""value2"": 123
 }".Trim(),
-                json);
-        }
+            json);
+    }
 
-        [Fact]
-        public void Serialize_Nested_Simple_Null()
+    [Fact]
+    public void Serialize_Nested_Simple_Null()
+    {
+        /* Given */
+        var source = new Nested
         {
-            /* Given */
-            var source = new Nested()
+            Dictionary = new Dictionary<string, object>
             {
-                Dictionary = new Dictionary<string, object>()
-                {
-                    ["string"] = null
-                },
-                Value2 = 123,
-                Value1 = "string"
-            };
-
-            /* When */
-            var json = JsonSerializer.Serialize(source, _options);
-
-            /* Then */
-            Assert.Equal(
-                @"{
+                ["string"] = null
+            },
+            Value2 = 123,
+            Value1 = "string"
+        };
+
+        /* When */
+        var json = JsonSerializer.Serialize(source, _options);
+
+        /* Then */
+        Assert.Equal(
+            @"{
   ""value1"": ""string"",
   ""dictionary"": {
     ""string"": null
   },
   ""value2"": 123
 }".Trim(),
-                json);
-        }
+            json);
+    }
 
-        [Fact]
-        public void Serialize_Nested_ComplexValues()
+    [Fact]
+    public void Serialize_Nested_ComplexValues()
+    {
+        /* Given */
+        var source = new Nested
         {
-            /* Given */
-            var source = new Nested()
+            Dictionary = new Dictionary<string, object>
             {
-                Dictionary = new Dictionary<string, object>()
+                ["int"] = 123,
+                ["string"] = "string",
+                ["complex"] = new Dictionary<string, object>
                 {
-                    ["int"] = 123,
-                    ["string"] ="string",
-                    ["complex"] = new Dictionary<string, object>()
-                    {
-                        ["double"] = 1.123d
-                    }
-                },
-                Value2 = 123,
-                Value1 = "string"
-            };
+                    ["double"] = 1.123d
+                }
+            },
+            Value2 = 123,
+            Value1 = "string"
+        };
 
-            /* When */
-            var json = JsonSerializer.Serialize(source, _options);
+        /* When */
+        var json = JsonSerializer.Serialize(source, _options);
 
-            /* Then */
-            Assert.Equal(
-                @"{
+        /* Then */
+        Assert.Equal(
+            @"{
   ""value1"": ""string"",
   ""dictionary"": {
     ""int"": 123,
@@ -302,16 +301,14 @@ public void Serialize_Nested_ComplexValues()
   },
   ""value2"": 123
 }".Trim(),
-                json);
-        }
-        
-        private class Nested
-        {
-            public string Value1 { get; set; }
+            json);
+    }
 
-            public Dictionary<string, object> Dictionary { get; set; }
+    private class Nested
+    {
+        public Dictionary<string, object> Dictionary { get; set; }
+        public string Value1 { get; set; }
 
-            public int Value2 { get; set; }
-        }
+        public int Value2 { get; set; }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/ExecutionResultExtensions.cs b/tests/graphql.server.links.tests/ExecutionResultExtensions.cs
index 6cd4077d5..ee2bd3ca6 100644
--- a/tests/graphql.server.links.tests/ExecutionResultExtensions.cs
+++ b/tests/graphql.server.links.tests/ExecutionResultExtensions.cs
@@ -4,30 +4,29 @@
 using Newtonsoft.Json.Serialization;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests
+namespace Tanka.GraphQL.Server.Links.Tests;
+
+public static class ExecutionResultExtensions
 {
-    public static class ExecutionResultExtensions
+    public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
     {
-        public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
-        {
-            if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
-            if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
+        if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
+        if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
 
-            var actualJson = JToken.FromObject(actualResult,
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var actualJson = JToken.FromObject(actualResult,
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var expectedJsonObject = JObject.FromObject(
-                JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var expectedJsonObject = JObject.FromObject(
+            JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            Assert.True(JToken.DeepEquals(expectedJsonObject, actualJson),
-                $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
-        }
+        Assert.True(JToken.DeepEquals(expectedJsonObject, actualJson),
+            $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
index 5124855ed..ea391d009 100644
--- a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
+++ b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
@@ -1,22 +1,20 @@
-using System;
-using System.Collections.Generic;
-using System.Threading;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests
+namespace Tanka.GraphQL.Server.Links.Tests;
+
+public class MakeRemoteExecutableFacts
 {
-    public class MakeRemoteExecutableFacts
+    [Fact]
+    public async Task Execute_with_StaticLink()
     {
-        [Fact]
-        public async Task Execute_with_StaticLink()
-        {
-            /* Given */
-            var schemaOneBuilder = new SchemaBuilder()
-                .Add(
-                    @"
+        /* Given */
+        var schemaOneBuilder = new SchemaBuilder()
+            .Add(
+                @"
                     type User {
                         id: ID!
                         name: String!
@@ -31,9 +29,9 @@ type Query {
                     }
                     ");
 
-            var schemaTwoBuilder = new SchemaBuilder()
-                .Add(
-                    @"
+        var schemaTwoBuilder = new SchemaBuilder()
+            .Add(
+                @"
                     type Address {
                         city: String!
                     }
@@ -46,44 +44,44 @@ type Query {
 
                     }
                     "
-                );
+            );
 
-            var schemaOne = RemoteSchemaTools.MakeRemoteExecutable(
-                schemaOneBuilder,
-                RemoteLinks.Static(new ExecutionResult
+        var schemaOne = RemoteSchemaTools.MakeRemoteExecutable(
+            schemaOneBuilder,
+            RemoteLinks.Static(new ExecutionResult
+            {
+                Data = new Dictionary<string, object>
                 {
-                    Data = new Dictionary<string, object>
+                    ["userById"] = new Dictionary<string, object>
                     {
-                        ["userById"] = new Dictionary<string, object>
-                        {
-                            ["id"] = "1",
-                            ["name"] = "name"
-                        }
+                        ["id"] = "1",
+                        ["name"] = "name"
                     }
-                }));
+                }
+            }));
 
-            var schemaTwo = await schemaTwoBuilder.Build(
-                new ResolversMap()
+        var schemaTwo = await schemaTwoBuilder.Build(
+            new ResolversMap
+            {
+                ["Address"] = new()
                 {
-                    ["Address"] = new FieldResolversMap
-                    {
-                        {"city", context => ResolveSync.As(context.ObjectValue)}
-                    },
-                    ["User"] = new FieldResolversMap
-                    {
-                        {"address", context => ResolveSync.As("Vantaa")}
-                    }
-                });
+                    { "city", context => ResolveSync.As(context.ObjectValue) }
+                },
+                ["User"] = new()
+                {
+                    { "address", context => ResolveSync.As("Vantaa") }
+                }
+            });
 
-            var schema = await new SchemaBuilder()
-                //.Merge(schemaOne, schemaTwo)
-                .Build(new SchemaBuildOptions());
+        var schema = await new SchemaBuilder()
+            //.Merge(schemaOne, schemaTwo)
+            .Build(new SchemaBuildOptions());
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = schema,
-                Document = @"
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = schema,
+            Document = @"
                 {
                     userById(id: ""1"") {
                         id
@@ -93,11 +91,11 @@ type Query {
                         }
                     }
                 }"
-            });
+        });
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"
+        /* Then */
+        result.ShouldMatchJson(
+            @"
                 {
                   ""data"": {
                     ""userById"": {
@@ -110,6 +108,5 @@ type Query {
                   }
                 }
                 ");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
index c70881652..bae1a2787 100644
--- a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
+++ b/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
@@ -4,7 +4,6 @@
 using System.Text;
 using System.Threading.Tasks;
 using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.TypeSystem.ValueSerialization;
 using Xunit;
 
 namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
diff --git a/tests/graphql.server.links.tests/introspection/ParseIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/ParseIntrospectionFacts.cs
index 48a7197b1..4ed603390 100644
--- a/tests/graphql.server.links.tests/introspection/ParseIntrospectionFacts.cs
+++ b/tests/graphql.server.links.tests/introspection/ParseIntrospectionFacts.cs
@@ -1,13 +1,13 @@
 using System.Linq;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection
+namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
+
+public class ParseIntrospectionFacts
 {
-    public class ParseIntrospectionFacts
+    public ParseIntrospectionFacts()
     {
-        public ParseIntrospectionFacts()
-        {
-            IntrospectionJson = @"{
+        IntrospectionJson = @"{
           ""data"": {
             ""__schema"": {
               ""directives"": [
@@ -403,96 +403,95 @@ public ParseIntrospectionFacts()
           },
           ""extensions"": {}
         }";
-        }
+    }
 
-        public string IntrospectionJson { get; }
+    public string IntrospectionJson { get; }
 
-        [Fact]
-        public void Parse_Schema()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parse_Schema()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema);
-        }
+        /* Then */
+        Assert.NotNull(result.Schema);
+    }
 
-        [Fact]
-        public void Parse_QueryType_Name()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parse_QueryType_Name()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.QueryType.Name);
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.QueryType.Name);
+    }
 
-        [Fact]
-        public void Parse_MutationType_Name()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parse_MutationType_Name()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.MutationType.Name);
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.MutationType.Name);
+    }
 
-        [Fact]
-        public void Parse_SubscriptionType_Name()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parse_SubscriptionType_Name()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.SubscriptionType.Name);
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.SubscriptionType.Name);
+    }
 
-        [Fact]
-        public void Parsed_Types_Includes_QueryType()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parsed_Types_Includes_QueryType()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.QueryType.Name));
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.QueryType.Name));
+    }
 
-        [Fact]
-        public void Parsed_Types_Includes_MutationType()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parsed_Types_Includes_MutationType()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.MutationType.Name));
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.MutationType.Name));
+    }
 
-        [Fact]
-        public void Parsed_Types_Includes_SubscriptionType()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parsed_Types_Includes_SubscriptionType()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.SubscriptionType.Name));
-        }
+        /* Then */
+        Assert.NotNull(result.Schema.Types.SingleOrDefault(t => t.Name == result.Schema.SubscriptionType.Name));
+    }
 
-        [Fact]
-        public void Parsed_Types_have_kind()
-        {
-            /* Given */
-            /* When */
-            var result = IntrospectionParser.Deserialize(IntrospectionJson);
+    [Fact]
+    public void Parsed_Types_have_kind()
+    {
+        /* Given */
+        /* When */
+        var result = IntrospectionParser.Deserialize(IntrospectionJson);
 
-            /* Then */
-            Assert.All(result.Schema.Types, type => Assert.NotNull(type.Kind));
-        }
+        /* Then */
+        Assert.All(result.Schema.Types, type => Assert.NotNull(type.Kind));
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests.host/Program.cs b/tests/graphql.server.tests.host/Program.cs
index ae45c85c4..737b23d45 100644
--- a/tests/graphql.server.tests.host/Program.cs
+++ b/tests/graphql.server.tests.host/Program.cs
@@ -1,19 +1,18 @@
 using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
 
-namespace Tanka.GraphQL.Server.Tests.Host
+namespace Tanka.GraphQL.Server.Tests.Host;
+
+public class Program
 {
-    public class Program
+    public static void Main(string[] args)
     {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
+        CreateWebHostBuilder(args).Build().Run();
+    }
 
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args)
-        {
-            return WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
-        }
+    public static IWebHostBuilder CreateWebHostBuilder(string[] args)
+    {
+        return WebHost.CreateDefaultBuilder(args)
+            .UseStartup<Startup>();
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests.host/Startup.cs b/tests/graphql.server.tests.host/Startup.cs
index b60bf7f64..cc5ddd7bc 100644
--- a/tests/graphql.server.tests.host/Startup.cs
+++ b/tests/graphql.server.tests.host/Startup.cs
@@ -9,16 +9,16 @@
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Server.Tests.Host
+namespace Tanka.GraphQL.Server.Tests.Host;
+
+public class Startup
 {
-    public class Startup
+    // This method gets called by the runtime. Use this method to add services to the container.
+    // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
+    public void ConfigureServices(IServiceCollection services)
     {
-        // This method gets called by the runtime. Use this method to add services to the container.
-        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
-        public void ConfigureServices(IServiceCollection services)
-        {
-            var eventManager = new EventManager();
-            var sdl = @"
+        var eventManager = new EventManager();
+        var sdl = @"
                 input InputEvent {
                     type: String!
                     message: String!
@@ -47,128 +47,127 @@ type Subscription {
                 }
                 ";
 
-            var builder = new SchemaBuilder()
-                .Add(sdl);
+        var builder = new SchemaBuilder()
+            .Add(sdl);
 
-            var resolvers = new ResolversMap()
+        var resolvers = new ResolversMap
+        {
             {
+                "Event", new FieldResolversMap
                 {
-                    "Event", new FieldResolversMap
-                    {
-                        {"type", Resolve.PropertyOf<Event>(ev => ev.Type)},
-                        {"message", Resolve.PropertyOf<Event>(ev => ev.Message)}
-                    }
-                },
+                    { "type", Resolve.PropertyOf<Event>(ev => ev.Type) },
+                    { "message", Resolve.PropertyOf<Event>(ev => ev.Message) }
+                }
+            },
+            {
+                "Query", new FieldResolversMap
                 {
-                    "Query", new FieldResolversMap
-                    {
-                        {"hello", context => new ValueTask<IResolverResult>(Resolve.As("world"))}
-                    }
-                },
+                    { "hello", context => new ValueTask<IResolverResult>(Resolve.As("world")) }
+                }
+            },
+            {
+                "Mutation", new FieldResolversMap
                 {
-                    "Mutation", new FieldResolversMap
                     {
+                        "add", async context =>
                         {
-                            "add", async context =>
-                            {
-                                var input = context.GetObjectArgument<InputEvent>("event");
-                                var ev = await eventManager.Add(input.Type, input.Message);
+                            var input = context.GetObjectArgument<InputEvent>("event");
+                            var ev = await eventManager.Add(input.Type, input.Message);
 
-                                return Resolve.As(ev);
-                            }
+                            return Resolve.As(ev);
                         }
                     }
-                },
+                }
+            },
+            {
+                "Subscription", new FieldResolversMap
                 {
-                    "Subscription", new FieldResolversMap
                     {
+                        "events", (context, ct) =>
                         {
-                            "events", (context, ct) =>
-                            {
-                                var events = eventManager.Subscribe(ct);
-                                return new ValueTask<ISubscriberResult>(events);
-                            },
-                            context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))
-                        }
+                            var events = eventManager.Subscribe(ct);
+                            return new ValueTask<ISubscriberResult>(events);
+                        },
+                        context => new ValueTask<IResolverResult>(Resolve.As(context.ObjectValue))
                     }
                 }
-            };
+            }
+        };
 
-            var executable = builder.Build(resolvers, resolvers);
+        var executable = builder.Build(resolvers, resolvers);
 
-            services.AddSingleton(provider => eventManager);
+        services.AddSingleton(provider => eventManager);
 
-            // configure common options and add web socket services
-            services.AddTankaGraphQL()
-                .ConfigureSchema(()=> new ValueTask<ISchema>(executable))
-                .ConfigureWebSockets();
+        // configure common options and add web socket services
+        services.AddTankaGraphQL()
+            .ConfigureSchema(() => new ValueTask<ISchema>(executable))
+            .ConfigureWebSockets();
 
-            // add SignalR services and Tanka SignalR hub services
-            services.AddSignalR()
-                .AddTankaGraphQL();
-        }
+        // add SignalR services and Tanka SignalR hub services
+        services.AddSignalR()
+            .AddTankaGraphQL();
+    }
 
-        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
-        {
-            if (env.IsDevelopment()) app.UseDeveloperExceptionPage();
+    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+    {
+        if (env.IsDevelopment()) app.UseDeveloperExceptionPage();
 
-            app.UseWebSockets();
+        app.UseWebSockets();
 
-            app.UseRouting();
-            app.UseEndpoints(endpoints =>
-            {
-                endpoints.MapTankaGraphQLSignalR("/graphql");
-                endpoints.MapTankaGraphQLWebSockets("/api/graphql");
-            });
-        }
+        app.UseRouting();
+        app.UseEndpoints(endpoints =>
+        {
+            endpoints.MapTankaGraphQLSignalR("/graphql");
+            endpoints.MapTankaGraphQLWebSockets("/api/graphql");
+        });
     }
+}
+
+public class Event
+{
+    public string Message { get; set; }
+    public string Type { get; set; }
+}
 
-    public class Event
+public class InputEvent : IReadFromObjectDictionary
+{
+    public string Message { get; set; }
+    public string Type { get; set; }
+
+    public void Read(IReadOnlyDictionary<string, object> source)
     {
-        public string Type { get; set; }
-        public string Message { get; set; }
+        Type = source.GetValue<string>("type");
+        Message = source.GetValue<string>("message");
     }
+}
 
-    public class InputEvent : IReadFromObjectDictionary
-    {
-        public string Type { get; set; }
-        public string Message { get; set; }
+public class EventManager
+{
+    private readonly PoliteEventChannel<Event> _channel;
 
-        public void Read(IReadOnlyDictionary<string, object> source)
+    public EventManager()
+    {
+        _channel = new PoliteEventChannel<Event>(new Event
         {
-            Type = source.GetValue<string>("type");
-            Message = source.GetValue<string>("message");
-        }
+            Type = "welcome",
+            Message = "Welcome"
+        });
     }
 
-    public class EventManager
+    public async Task<Event> Add(string type, string message)
     {
-        private readonly PoliteEventChannel<Event> _channel;
-
-        public EventManager()
+        var ev = new Event
         {
-            _channel = new PoliteEventChannel<Event>(new Event
-            {
-                Type = "welcome",
-                Message = "Welcome"
-            });
-        }
+            Type = type,
+            Message = message
+        };
+        await _channel.WriteAsync(ev);
+        return ev;
+    }
 
-        public async Task<Event> Add(string type, string message)
-        {
-            var ev = new Event
-            {
-                Type = type,
-                Message = message
-            };
-            await _channel.WriteAsync(ev);
-            return ev;
-        }
-
-        public ISubscriberResult Subscribe(CancellationToken cancellationToken)
-        {
-            return _channel.Subscribe(cancellationToken);
-        }
+    public ISubscriberResult Subscribe(CancellationToken cancellationToken)
+    {
+        return _channel.Subscribe(cancellationToken);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/OperationMessageExtensions.cs b/tests/graphql.server.tests/OperationMessageExtensions.cs
index fed5d1370..aebe25c25 100644
--- a/tests/graphql.server.tests/OperationMessageExtensions.cs
+++ b/tests/graphql.server.tests/OperationMessageExtensions.cs
@@ -5,30 +5,29 @@
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests
+namespace Tanka.GraphQL.Server.Tests;
+
+public static class OperationMessageExtensions
 {
-    public static class OperationMessageExtensions
+    public static void ShouldMatchJson(this OperationMessage actualResult, string expectedJson)
     {
-        public static void ShouldMatchJson(this OperationMessage actualResult, string expectedJson)
-        {
-            if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
-            if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
+        if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
+        if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
 
-            var actualJson = JToken.FromObject(actualResult,
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var actualJson = JToken.FromObject(actualResult,
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var expectedJsonObject = JObject.FromObject(
-                JsonConvert.DeserializeObject<OperationMessage>(expectedJson),
-                JsonSerializer.Create(new JsonSerializerSettings
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var expectedJsonObject = JObject.FromObject(
+            JsonConvert.DeserializeObject<OperationMessage>(expectedJson),
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            Assert.True(JToken.DeepEquals(expectedJsonObject, actualJson),
-                $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
-        }
+        Assert.True(JToken.DeepEquals(expectedJsonObject, actualJson),
+            $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/ServerFacts.cs b/tests/graphql.server.tests/ServerFacts.cs
index 8c4c811a4..03c115de7 100644
--- a/tests/graphql.server.tests/ServerFacts.cs
+++ b/tests/graphql.server.tests/ServerFacts.cs
@@ -3,226 +3,226 @@
 using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.Server.Tests.Host;
 using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.AspNetCore.SignalR.Client;
 using Microsoft.AspNetCore.TestHost;
 using Microsoft.Extensions.DependencyInjection;
 using Tanka.GraphQL.Server.Links.DTOs;
+using Tanka.GraphQL.Server.Tests.Host;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests
+namespace Tanka.GraphQL.Server.Tests;
+
+public class ServerFacts : IClassFixture<WebApplicationFactory<Startup>>
 {
-    public class ServerFacts : IClassFixture<WebApplicationFactory<Startup>>
-    {
-        public ServerFacts(WebApplicationFactory<Startup> factory)
-        {
-            _client = factory.CreateClient();
-            _server = factory.Server;
-            _eventManager = factory.Server.Host.Services.GetRequiredService<EventManager>();
-        }
+    private readonly HttpClient _client;
+    private readonly EventManager _eventManager;
 
-        private readonly TestServer _server;
-        private readonly HttpClient _client;
-        private readonly EventManager _eventManager;
+    private readonly TestServer _server;
 
-        private HubConnection Connect()
-        {
-            var connection = new HubConnectionBuilder()
-                .WithUrl(new Uri(_server.BaseAddress, "graphql"),
-                    o => { o.HttpMessageHandlerFactory = _ => _server.CreateHandler(); })
-                .AddJsonProtocol(options =>
-                {
-                    options.PayloadSerializerOptions.Converters.Add(new ObjectDictionaryConverter());
-                })
-                .Build();
+    public ServerFacts(WebApplicationFactory<Startup> factory)
+    {
+        _client = factory.CreateClient();
+        _server = factory.Server;
+        _eventManager = factory.Server.Host.Services.GetRequiredService<EventManager>();
+    }
 
-            connection.Closed += exception =>
-            {
-                Assert.Null(exception);
-                return Task.CompletedTask;
-            };
+    [Fact]
+    public async Task Multiple_Queries()
+    {
+        /* Given */
+        var cts = new CancellationTokenSource();
+        var hubConnection = Connect();
+        await hubConnection.StartAsync();
 
-            return connection;
-        }
+        /* When */
+        var reader1 = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
+        {
+            Query = "{ hello }"
+        }, cts.Token);
 
-        [Fact]
-        public async Task Multiple_Queries()
+        var reader2 = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
         {
-            /* Given */
-            var cts = new CancellationTokenSource();
-            var hubConnection = Connect();
-            await hubConnection.StartAsync();
+            Query = "{ hello }"
+        }, cts.Token);
 
-            /* When */
-            var reader1 = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
-            {
-                Query = "{ hello }"
-            }, cts.Token);
+        /* Then */
+        var result1 = await reader1.ReadAsync();
+        var result2 = await reader2.ReadAsync();
 
-            var reader2 = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
-            {
-                Query = "{ hello }"
-            }, cts.Token);
-
-            /* Then */
-            var result1 = await reader1.ReadAsync();
-            var result2 = await reader2.ReadAsync();
+        Assert.Contains(result1.Data, kv =>
+        {
+            var (key, value) = kv;
+            return key == "hello" && value.ToString() == "world";
+        });
 
-            Assert.Contains(result1.Data, kv =>
-            {
-                var (key, value) = kv;
-                return key == "hello" && value.ToString() == "world";
-            });
+        Assert.Contains(result2.Data, kv =>
+        {
+            var (key, value) = kv;
+            return key == "hello" && value.ToString() == "world";
+        });
 
-            Assert.Contains(result2.Data, kv =>
-            {
-                var (key, value) = kv;
-                return key == "hello" && value.ToString() == "world";
-            });
+        await hubConnection.StopAsync();
+    }
 
-            await hubConnection.StopAsync();
-        }
+    [Fact]
+    public async Task Mutation()
+    {
+        /* Given */
+        var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1));
+        var hubConnection = Connect();
+        await hubConnection.StartAsync();
 
-        [Fact]
-        public async Task Mutation()
+        /* When */
+        var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("Query", new QueryRequest
         {
-            /* Given */
-            var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1));
-            var hubConnection = Connect();
-            await hubConnection.StartAsync();
-
-            /* When */
-            var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("Query", new QueryRequest
-            {
-                Query = @"
+            Query = @"
                         mutation Add($event: InputEvent!) { 
                             add(event: $event) {
                                     type
                                     message
                                 }
                         }",
-                Variables = new Dictionary<string, object>
+            Variables = new Dictionary<string, object>
+            {
                 {
+                    "event", new Dictionary<string, object>
                     {
-                        "event", new Dictionary<string, object>
-                        {
-                            {"type", "hello"},
-                            {"message", "world"}
-                        }
+                        { "type", "hello" },
+                        { "message", "world" }
                     }
                 }
-            }, cts.Token);
-
-
-            /* Then */
-            var result = await reader.ReadAsync(cts.Token);
+            }
+        }, cts.Token);
 
-            Assert.Contains(result.Data, kv =>
-            {
-                var (key, value) = kv;
-                return key == "add";
-            });
 
-            cts.Cancel();
-            await hubConnection.StopAsync();
-        }
+        /* Then */
+        var result = await reader.ReadAsync(cts.Token);
 
-        [Fact]
-        public async Task Query()
+        Assert.Contains(result.Data, kv =>
         {
-            /* Given */
-            var cts = new CancellationTokenSource();
-            var hubConnection = Connect();
-            await hubConnection.StartAsync();
+            var (key, value) = kv;
+            return key == "add";
+        });
 
-            /* When */
-            var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
-            {
-                Query = "{ hello }"
-            }, cts.Token);
+        cts.Cancel();
+        await hubConnection.StopAsync();
+    }
 
-            /* Then */
-            var result = await reader.ReadAsync(cts.Token);
+    [Fact]
+    public async Task Query()
+    {
+        /* Given */
+        var cts = new CancellationTokenSource();
+        var hubConnection = Connect();
+        await hubConnection.StartAsync();
 
-            Assert.Contains(result.Data, kv =>
-            {
-                var (key, value) = kv;
-                return key == "hello" && value.ToString() == "world";
-            });
+        /* When */
+        var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("query", new QueryRequest
+        {
+            Query = "{ hello }"
+        }, cts.Token);
 
-            await hubConnection.StopAsync();
-        }
+        /* Then */
+        var result = await reader.ReadAsync(cts.Token);
 
-        [Fact]
-        public async Task Subscribe()
+        Assert.Contains(result.Data, kv =>
         {
-            /* Given */
-            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
-            var hubConnection = Connect();
-            await hubConnection.StartAsync();
-
-            /* When */
-            // this wont block until the actual hub method execution has finished?
-            var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>(
-                "Query",
-                new QueryRequest
-                {
-                    Query = @"
+            var (key, value) = kv;
+            return key == "hello" && value.ToString() == "world";
+        });
+
+        await hubConnection.StopAsync();
+    }
+
+    [Fact]
+    public async Task Subscribe()
+    {
+        /* Given */
+        var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+        var hubConnection = Connect();
+        await hubConnection.StartAsync();
+
+        /* When */
+        // this wont block until the actual hub method execution has finished?
+        var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>(
+            "Query",
+            new QueryRequest
+            {
+                Query = @"
                         subscription { 
                             events {
                                  type
                                  message
                             }
                         }"
-                }, cts.Token);
+            }, cts.Token);
 
-            /* Then */
-            var result = await reader.ReadAsync(cts.Token);
+        /* Then */
+        var result = await reader.ReadAsync(cts.Token);
 
-            Assert.Contains(result.Data, kv =>
-            {
-                var (key, value) = kv;
-                return key == "events";
-            });
+        Assert.Contains(result.Data, kv =>
+        {
+            var (key, value) = kv;
+            return key == "events";
+        });
 
-            cts.Cancel();
-            await hubConnection.StopAsync();
-        }
+        cts.Cancel();
+        await hubConnection.StopAsync();
+    }
 
-        [Fact]
-        public async Task Subscribe_with_unsubscribe()
-        {
-            /* Given */
-            var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1));
-            var hubConnection = Connect();
-            await hubConnection.StartAsync();
+    [Fact]
+    public async Task Subscribe_with_unsubscribe()
+    {
+        /* Given */
+        var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1));
+        var hubConnection = Connect();
+        await hubConnection.StartAsync();
 
-            /* When */
-            var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("Query", new QueryRequest
-            {
-                Query = @"
+        /* When */
+        var reader = await hubConnection.StreamAsChannelAsync<ExecutionResult>("Query", new QueryRequest
+        {
+            Query = @"
                     subscription { 
                         events {
                              type
                              message
                         }
                     }"
-            }, cts.Token);
+        }, cts.Token);
 
 
-            /* Then */
-            var result = await reader.ReadAsync(cts.Token);
+        /* Then */
+        var result = await reader.ReadAsync(cts.Token);
 
-            Assert.Contains(result.Data, kv =>
+        Assert.Contains(result.Data, kv =>
+        {
+            var (key, value) = kv;
+            return key == "events";
+        });
+
+        cts.Cancel();
+
+        await hubConnection.StopAsync();
+    }
+
+    private HubConnection Connect()
+    {
+        var connection = new HubConnectionBuilder()
+            .WithUrl(new Uri(_server.BaseAddress, "graphql"),
+                o => { o.HttpMessageHandlerFactory = _ => _server.CreateHandler(); })
+            .AddJsonProtocol(options =>
             {
-                var (key, value) = kv;
-                return key == "events";
-            });
+                options.PayloadSerializerOptions.Converters.Add(new ObjectDictionaryConverter());
+            })
+            .Build();
 
-            cts.Cancel();
+        connection.Closed += exception =>
+        {
+            Assert.Null(exception);
+            return Task.CompletedTask;
+        };
 
-            await hubConnection.StopAsync();
-        }
+        return connection;
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/Usages/ServerBuilderUsageFacts.cs b/tests/graphql.server.tests/Usages/ServerBuilderUsageFacts.cs
index b3be077c3..c83d85f2c 100644
--- a/tests/graphql.server.tests/Usages/ServerBuilderUsageFacts.cs
+++ b/tests/graphql.server.tests/Usages/ServerBuilderUsageFacts.cs
@@ -1,9 +1,7 @@
-using System.Collections;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Channels;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Authorization;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -17,223 +15,222 @@
 using Tanka.GraphQL.Validation;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests.Usages
+namespace Tanka.GraphQL.Server.Tests.Usages;
+
+public class ServerBuilderUsageFacts
 {
-    public class ServerBuilderUsageFacts
+    public ServerBuilderUsageFacts()
     {
-        public ServerBuilderUsageFacts()
-        {
-            Services = new ServiceCollection();
-            Services.AddLogging();
-            Services.AddMemoryCache();
-        }
-
-        public IServiceCollection Services { get; set; }
-
-        [Fact]
-        public void AddTankaGraphQL()
-        {
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => default);
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-
-            // Options is added by the AddTankaGraphQL
-            Assert.NotNull(provider.GetService<IOptions<ServerOptions>>());
-
-            // Query stream service is added by AddTankaGraphQL
-            Assert.NotNull(provider.GetService<IQueryStreamService>());
-        }
-
-        [Fact]
-        public async Task Configure_Schema()
-        {
-            /* Given */
-            var schema = Substitute.For<ISchema>();
-
-            /* When */
-            Services.AddTankaGraphQL()
-                // simple factory function for setting up the schema
-                .ConfigureSchema(() => new ValueTask<ISchema>(schema));
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var options = provider.GetService<IOptions<ServerOptions>>().Value;
-            var actual = await options.GetSchema(null);
-            Assert.Same(schema, actual);
-        }
-
-        [Fact]
-        public async Task Configure_Schema_with_dependency()
-        {
-            /* Given */
-            var schema = Substitute.For<ISchema>();
-
-            /* When */
-            Services.AddTankaGraphQL()
-                // factory function with one dependency resolved from service provider
-                .ConfigureSchema<IMemoryCache>(async cache =>
-                    await cache.GetOrCreateAsync("schema", entry => Task.FromResult(schema)));
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var options = provider.GetService<IOptions<ServerOptions>>().Value;
-            var actual = await options.GetSchema(null);
-            Assert.Same(schema, actual);
-        }
-
-        [Fact]
-        public void Configure_Rules()
-        {
-            /* Given */
-            var schema = Substitute.For<ISchema>();
-            var maxCost = CostAnalyzer.MaxCost(100);
-
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => new ValueTask<ISchema>(schema))
-                // rules factory function with the default rules as the parameter
-                .ConfigureRules(rules => rules.Concat(new []
-                {
-                    // append max query cost validation rule
-                    maxCost
-                }).ToArray());
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var options = provider.GetService<IOptions<ServerOptions>>().Value;
-            var actual = options.ValidationRules;
-            Assert.Contains(actual, rule => rule == maxCost);
-        }
-
-        [Fact]
-        public void Configure_Rules_remove_all()
-        {
-            /* Given */
-            var schema = Substitute.For<ISchema>();
-
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => new ValueTask<ISchema>(schema))
-                // rules factory function with the default rules as the parameter
-                .ConfigureRules(rules => new CombineRule[0]);
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var options = provider.GetService<IOptions<ServerOptions>>().Value;
-            var actual = options.ValidationRules;
-            Assert.Empty(actual);
-        }
-
-
-        [Fact]
-        public void Configure_Rules_with_dependency()
-        {
-            /* Given */
-            var schema = Substitute.For<ISchema>();
-
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => new ValueTask<ISchema>(schema))
-                // rules factory function with default rules and dependency resolved from service provider
-                .ConfigureRules<ILogger<ServerBuilderUsageFacts>>((rules, logger) => new CombineRule[0]);
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var options = provider.GetService<IOptions<ServerOptions>>().Value;
-            var actual = options.ValidationRules;
-            Assert.Empty(actual);
-        }
-
-        [Fact]
-        public void Add_Extension()
-        {
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => default)
-                // add trace execution extension
-                .AddExtension<TraceExtension>();
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var executorExtensions = provider.GetService<IEnumerable<IExecutorExtension>>();
-            Assert.Contains(executorExtensions, extension => extension is TraceExtension);
-        }
-
-        [Fact]
-        public void Configure_WebSockets()
-        {
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => default)
-                // Add websocket services with defaults
-                .ConfigureWebSockets();
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            Assert.NotNull(provider.GetService<WebSocketServer>());
-            Assert.NotNull(provider.GetService<IOptions<WebSocketServerOptions>>());
-        }
-
-        [Fact]
-        public async Task Configure_WebSockets_with_Accept()
-        {
-            /* Given */
-            var called = false;
-            /* When */
-            Services.AddTankaGraphQL()
-                .ConfigureSchema(() => default)
-                // Add websockets services with accept method
-                .ConfigureWebSockets(async context =>
-                {
-                    called = true;
-                    var succeeded = true; //todo: authorize
+        Services = new ServiceCollection();
+        Services.AddLogging();
+        Services.AddMemoryCache();
+    }
+
+    public IServiceCollection Services { get; set; }
+
+    [Fact]
+    public void AddTankaGraphQL()
+    {
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => default);
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+
+        // Options is added by the AddTankaGraphQL
+        Assert.NotNull(provider.GetService<IOptions<ServerOptions>>());
+
+        // Query stream service is added by AddTankaGraphQL
+        Assert.NotNull(provider.GetService<IQueryStreamService>());
+    }
 
-                    if (succeeded)
+    [Fact]
+    public async Task Configure_Schema()
+    {
+        /* Given */
+        var schema = Substitute.For<ISchema>();
+
+        /* When */
+        Services.AddTankaGraphQL()
+            // simple factory function for setting up the schema
+            .ConfigureSchema(() => new ValueTask<ISchema>(schema));
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var options = provider.GetService<IOptions<ServerOptions>>().Value;
+        var actual = await options.GetSchema(null);
+        Assert.Same(schema, actual);
+    }
+
+    [Fact]
+    public async Task Configure_Schema_with_dependency()
+    {
+        /* Given */
+        var schema = Substitute.For<ISchema>();
+
+        /* When */
+        Services.AddTankaGraphQL()
+            // factory function with one dependency resolved from service provider
+            .ConfigureSchema<IMemoryCache>(async cache =>
+                await cache.GetOrCreateAsync("schema", entry => Task.FromResult(schema)));
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var options = provider.GetService<IOptions<ServerOptions>>().Value;
+        var actual = await options.GetSchema(null);
+        Assert.Same(schema, actual);
+    }
+
+    [Fact]
+    public void Configure_Rules()
+    {
+        /* Given */
+        var schema = Substitute.For<ISchema>();
+        var maxCost = CostAnalyzer.MaxCost(100);
+
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => new ValueTask<ISchema>(schema))
+            // rules factory function with the default rules as the parameter
+            .ConfigureRules(rules => rules.Concat(new[]
+            {
+                // append max query cost validation rule
+                maxCost
+            }).ToArray());
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var options = provider.GetService<IOptions<ServerOptions>>().Value;
+        var actual = options.ValidationRules;
+        Assert.Contains(actual, rule => rule == maxCost);
+    }
+
+    [Fact]
+    public void Configure_Rules_remove_all()
+    {
+        /* Given */
+        var schema = Substitute.For<ISchema>();
+
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => new ValueTask<ISchema>(schema))
+            // rules factory function with the default rules as the parameter
+            .ConfigureRules(rules => new CombineRule[0]);
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var options = provider.GetService<IOptions<ServerOptions>>().Value;
+        var actual = options.ValidationRules;
+        Assert.Empty(actual);
+    }
+
+
+    [Fact]
+    public void Configure_Rules_with_dependency()
+    {
+        /* Given */
+        var schema = Substitute.For<ISchema>();
+
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => new ValueTask<ISchema>(schema))
+            // rules factory function with default rules and dependency resolved from service provider
+            .ConfigureRules<ILogger<ServerBuilderUsageFacts>>((rules, logger) => new CombineRule[0]);
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var options = provider.GetService<IOptions<ServerOptions>>().Value;
+        var actual = options.ValidationRules;
+        Assert.Empty(actual);
+    }
+
+    [Fact]
+    public void Add_Extension()
+    {
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => default)
+            // add trace execution extension
+            .AddExtension<TraceExtension>();
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var executorExtensions = provider.GetService<IEnumerable<IExecutorExtension>>();
+        Assert.Contains(executorExtensions, extension => extension is TraceExtension);
+    }
+
+    [Fact]
+    public void Configure_WebSockets()
+    {
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => default)
+            // Add websocket services with defaults
+            .ConfigureWebSockets();
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        Assert.NotNull(provider.GetService<WebSocketServer>());
+        Assert.NotNull(provider.GetService<IOptions<WebSocketServerOptions>>());
+    }
+
+    [Fact]
+    public async Task Configure_WebSockets_with_Accept()
+    {
+        /* Given */
+        var called = false;
+        /* When */
+        Services.AddTankaGraphQL()
+            .ConfigureSchema(() => default)
+            // Add websockets services with accept method
+            .ConfigureWebSockets(async context =>
+            {
+                called = true;
+                var succeeded = true; //todo: authorize
+
+                if (succeeded)
+                {
+                    await context.Output.WriteAsync(new OperationMessage
                     {
-                        await context.Output.WriteAsync(new OperationMessage
-                        {
-                            Type = MessageType.GQL_CONNECTION_ACK
-                        });
-                    }
-                    else
+                        Type = MessageType.GQL_CONNECTION_ACK
+                    });
+                }
+                else
+                {
+                    // you must decide what kind of message to send back to the client
+                    // in case the connection is not accepted.
+                    await context.Output.WriteAsync(new OperationMessage
                     {
-                        // you must decide what kind of message to send back to the client
-                        // in case the connection is not accepted.
-                        await context.Output.WriteAsync(new OperationMessage
-                        {
-                            Type = MessageType.GQL_CONNECTION_ERROR,
-                            Id = context.Message.Id
-                        });
-
-                        // complete the output forcing the server to disconnect
-                        context.Output.Complete();
-                    }
-                });
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            Assert.NotNull(provider.GetService<WebSocketServer>());
-            var options = provider.GetRequiredService<IOptions<WebSocketServerOptions>>().Value;
-            await options.AcceptAsync(new MessageContext(new OperationMessage(),
-                Channel.CreateUnbounded<OperationMessage>()));
-            Assert.True(called);
-        }
-
-        [Fact]
-        public void Validate_Schema_provided()
-        {
-            /* When */
-            Services.AddTankaGraphQL();
-
-            /* Then */
-            var provider = Services.BuildServiceProvider();
-            var exception =
-                Assert.Throws<OptionsValidationException>(() => provider.GetService<IOptions<ServerOptions>>().Value);
-
-            Assert.Contains(exception.Failures, failure => failure.Contains(nameof(ServerOptions.GetSchema)));
-        }
+                        Type = MessageType.GQL_CONNECTION_ERROR,
+                        Id = context.Message.Id
+                    });
+
+                    // complete the output forcing the server to disconnect
+                    context.Output.Complete();
+                }
+            });
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        Assert.NotNull(provider.GetService<WebSocketServer>());
+        var options = provider.GetRequiredService<IOptions<WebSocketServerOptions>>().Value;
+        await options.AcceptAsync(new MessageContext(new OperationMessage(),
+            Channel.CreateUnbounded<OperationMessage>()));
+        Assert.True(called);
+    }
+
+    [Fact]
+    public void Validate_Schema_provided()
+    {
+        /* When */
+        Services.AddTankaGraphQL();
+
+        /* Then */
+        var provider = Services.BuildServiceProvider();
+        var exception =
+            Assert.Throws<OptionsValidationException>(() => provider.GetService<IOptions<ServerOptions>>().Value);
+
+        Assert.Contains(exception.Failures, failure => failure.Contains(nameof(ServerOptions.GetSchema)));
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/WebSockets/DTOs/Serialization/Converters/OperationMessageConverterFacts.cs b/tests/graphql.server.tests/WebSockets/DTOs/Serialization/Converters/OperationMessageConverterFacts.cs
index b8b5c183d..837796949 100644
--- a/tests/graphql.server.tests/WebSockets/DTOs/Serialization/Converters/OperationMessageConverterFacts.cs
+++ b/tests/graphql.server.tests/WebSockets/DTOs/Serialization/Converters/OperationMessageConverterFacts.cs
@@ -5,91 +5,77 @@
 using Tanka.GraphQL.Server.WebSockets.DTOs.Serialization.Converters;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets.DTOs.Serialization.Converters
+namespace Tanka.GraphQL.Server.Tests.WebSockets.DTOs.Serialization.Converters;
+
+public class OperationMessageConverterFacts
 {
-    public class OperationMessageConverterFacts
+    private readonly JsonSerializerOptions _options;
+
+    public OperationMessageConverterFacts()
     {
-        public OperationMessageConverterFacts()
+        _options = new JsonSerializerOptions
         {
-            _options = new JsonSerializerOptions
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+            Converters =
             {
-                PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-                Converters =
-                {
-                    new OperationMessageConverter(),
-                    new ObjectDictionaryConverter()
-                }
-            };
-        }
-
-        private readonly JsonSerializerOptions _options;
-
-        private string CreateMessageJson(string id, string type, string payloadJson = null)
-        {
-            return @"
-                {
-                    ""id"": ""{id}"",
-                    ""type"": ""{type}"",
-                    ""payload"": {payloadJson}
-                }
-                "
-                .Replace("{id}", id)
-                .Replace("{type}", type)
-                .Replace("{payloadJson}", payloadJson ?? "null");
-        }
+                new OperationMessageConverter(),
+                new ObjectDictionaryConverter()
+            }
+        };
+    }
 
-        [Fact]
-        public void Deserialize_Init()
-        {
-            /* Given */
-            var json = CreateMessageJson(
-                "1",
-                MessageType.GQL_CONNECTION_INIT,
-                @"
+    [Fact]
+    public void Deserialize_Init()
+    {
+        /* Given */
+        var json = CreateMessageJson(
+            "1",
+            MessageType.GQL_CONNECTION_INIT,
+            @"
                 {
                     ""token"": ""123""
                 }
                 ");
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
 
-            /* Then */
-            Assert.Equal("1", actual.Id);
-            Assert.Equal(MessageType.GQL_CONNECTION_INIT, actual.Type);
-            Assert.IsType<Dictionary<string, object>>(actual.Payload);
-        }
+        /* Then */
+        Assert.Equal("1", actual.Id);
+        Assert.Equal(MessageType.GQL_CONNECTION_INIT, actual.Type);
+        Assert.IsType<Dictionary<string, object>>(actual.Payload);
+    }
 
-        [Fact]
-        public void Deserialize_Start()
-        {
-            /* Given */
-            var json = CreateMessageJson(
-                "1",
-                MessageType.GQL_START,
-                @"
+    [Fact]
+    public void Deserialize_Start()
+    {
+        /* Given */
+        var json = CreateMessageJson(
+            "1",
+            MessageType.GQL_START,
+            @"
                 {
                     ""token"": ""123""
                 }
                 ");
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
 
-            /* Then */
-            Assert.Equal("1", actual.Id);
-            Assert.Equal(MessageType.GQL_START, actual.Type);
-            Assert.IsType<OperationMessageQueryPayload>(actual.Payload);
-        }
+        /* Then */
+        Assert.Equal("1", actual.Id);
+        Assert.Equal(MessageType.GQL_START, actual.Type);
+        Assert.IsType<OperationMessageQueryPayload>(actual.Payload);
+    }
 
-        [Fact]
-        public void Deserialize_Data()
-        {
-            /* Given */
-            var json = CreateMessageJson(
-                "1",
-                MessageType.GQL_DATA,
-                @"
+    [Fact]
+    public void Deserialize_Data()
+    {
+        /* Given */
+        var json = CreateMessageJson(
+            "1",
+            MessageType.GQL_DATA,
+            @"
                 {
                     ""data"": 
                     {
@@ -98,101 +84,114 @@ public void Deserialize_Data()
                 }
                 ");
 
-            /* When */
-            var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
+        /* When */
+        var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
 
-            /* Then */
-            Assert.Equal("1", actual.Id);
-            Assert.Equal(MessageType.GQL_DATA, actual.Type);
-            Assert.IsType<ExecutionResult>(actual.Payload);
-        }
+        /* Then */
+        Assert.Equal("1", actual.Id);
+        Assert.Equal(MessageType.GQL_DATA, actual.Type);
+        Assert.IsType<ExecutionResult>(actual.Payload);
+    }
 
-        [Fact]
-        public void Deserialize_Stop()
-        {
-            /* Given */
-            var json = CreateMessageJson(
-                "1",
-                MessageType.GQL_STOP);
-
-            /* When */
-            var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
-
-            /* Then */
-            Assert.Equal("1", actual.Id);
-            Assert.Equal(MessageType.GQL_STOP, actual.Type);
-            Assert.Null(actual.Payload);
-        }
-
-        [Fact]
-        public void Serialize_Data()
+    [Fact]
+    public void Deserialize_Stop()
+    {
+        /* Given */
+        var json = CreateMessageJson(
+            "1",
+            MessageType.GQL_STOP);
+
+        /* When */
+        var actual = JsonSerializer.Deserialize<OperationMessage>(json, _options);
+
+        /* Then */
+        Assert.Equal("1", actual.Id);
+        Assert.Equal(MessageType.GQL_STOP, actual.Type);
+        Assert.Null(actual.Payload);
+    }
+
+    [Fact]
+    public void Serialize_Data()
+    {
+        /* Given */
+        var message = new OperationMessage
         {
-            /* Given */
-            var message = new OperationMessage()
+            Id = "1",
+            Type = MessageType.GQL_DATA,
+            Payload = new ExecutionResult
             {
-                Id = "1",
-                Type = MessageType.GQL_DATA,
-                Payload = new ExecutionResult()
+                Data = new Dictionary<string, object>
                 {
-                    Data = new Dictionary<string, object>()
-                    {
-                        ["field"] = "123"
-                    }
+                    ["field"] = "123"
                 }
-            };
+            }
+        };
 
-            /* When */
-            var actual = JsonSerializer.Serialize(message, _options);
+        /* When */
+        var actual = JsonSerializer.Serialize(message, _options);
 
 
-            /* Then */
-            message.ShouldMatchJson(actual);
-        }
+        /* Then */
+        message.ShouldMatchJson(actual);
+    }
 
-        [Fact]
-        public void Serialize_Complete()
+    [Fact]
+    public void Serialize_Complete()
+    {
+        /* Given */
+        var message = new OperationMessage
         {
-            /* Given */
-            var message = new OperationMessage()
-            {
-                Id = "1",
-                Type = MessageType.GQL_COMPLETE
-            };
+            Id = "1",
+            Type = MessageType.GQL_COMPLETE
+        };
 
-            /* When */
-            var actual = JsonSerializer.Serialize(message, _options);
+        /* When */
+        var actual = JsonSerializer.Serialize(message, _options);
 
 
-            /* Then */
-            message.ShouldMatchJson(actual);
-        }
+        /* Then */
+        message.ShouldMatchJson(actual);
+    }
 
-        [Fact]
-        public void Serialize_Error()
+    [Fact]
+    public void Serialize_Error()
+    {
+        /* Given */
+        var message = new OperationMessage
         {
-            /* Given */
-            var message = new OperationMessage()
+            Id = "1",
+            Type = MessageType.GQL_CONNECTION_ERROR,
+            Payload = new ExecutionResult
             {
-                Id = "1",
-                Type = MessageType.GQL_CONNECTION_ERROR,
-                Payload = new ExecutionResult()
+                Errors = new List<ExecutionError>
                 {
-                    Errors = new List<ExecutionError>()
+                    new()
                     {
-                        new ExecutionError()
-                        {
-                            Message = "error"
-                        }
+                        Message = "error"
                     }
                 }
-            };
+            }
+        };
+
+        /* When */
+        var actual = JsonSerializer.Serialize(message, _options);
 
-            /* When */
-            var actual = JsonSerializer.Serialize(message, _options);
 
+        /* Then */
+        message.ShouldMatchJson(actual);
+    }
 
-            /* Then */
-            message.ShouldMatchJson(actual);
-        }
+    private string CreateMessageJson(string id, string type, string payloadJson = null)
+    {
+        return @"
+                {
+                    ""id"": ""{id}"",
+                    ""type"": ""{type}"",
+                    ""payload"": {payloadJson}
+                }
+                "
+            .Replace("{id}", id)
+            .Replace("{type}", type)
+            .Replace("{payloadJson}", payloadJson ?? "null");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/GraphQLWSProtocolFacts.cs b/tests/graphql.server.tests/webSockets/GraphQLWSProtocolFacts.cs
index 0e38bfed6..3900b1078 100644
--- a/tests/graphql.server.tests/webSockets/GraphQLWSProtocolFacts.cs
+++ b/tests/graphql.server.tests/webSockets/GraphQLWSProtocolFacts.cs
@@ -1,11 +1,9 @@
 using System;
-using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Channels;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
-using Newtonsoft.Json.Linq;
 using NSubstitute;
 using Tanka.GraphQL.Server.WebSockets;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
@@ -13,180 +11,179 @@
 
 // ReSharper disable InconsistentNaming
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class GraphQLWSProtocolFacts
 {
-    public class GraphQLWSProtocolFacts
+    private readonly MessageContextAccessor _accessor;
+    private readonly NullLogger<GraphQLWSProtocol> _logger;
+    private readonly IOptions<WebSocketServerOptions> _options;
+
+    public GraphQLWSProtocolFacts()
     {
-        private IOptions<Server.WebSockets.WebSocketServerOptions> _options;
-        private NullLogger<GraphQLWSProtocol> _logger;
-        private MessageContextAccessor _accessor;
+        _options = Options.Create(new WebSocketServerOptions());
+        _logger = new NullLogger<GraphQLWSProtocol>();
+        _accessor = new MessageContextAccessor();
+    }
 
-        public GraphQLWSProtocolFacts()
-        {
-            _options = Options.Create(new Server.WebSockets.WebSocketServerOptions());
-            _logger = new NullLogger<GraphQLWSProtocol>();
-            _accessor = new MessageContextAccessor();
-        }
-
-        protected ValueTask<OperationMessage> ReadWithTimeout(
-            Channel<OperationMessage> channel,
-            int timeoutSeconds = 10)
-        {
-            using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutSeconds));
+    public GraphQLWSProtocol CreateSut(IQueryStreamService queryStreamService)
+    {
+        return new GraphQLWSProtocol(queryStreamService, _options, _accessor, _logger);
+    }
 
-            return channel.Reader.ReadAsync(cts.Token);
-        }
+    [Fact]
+    public async Task Unknown()
+    {
+        /* Given */
+        var channel = Channel.CreateUnbounded<OperationMessage>();
+        var queryStreamService = Substitute.For<IQueryStreamService>();
+        var sut = CreateSut(queryStreamService);
 
-        public GraphQLWSProtocol CreateSut(IQueryStreamService queryStreamService)
+        var message = new OperationMessage
         {
-            return new GraphQLWSProtocol(queryStreamService, _options, _accessor, _logger);
-        }
+            Type = "ARGHH"
+        };
+
+        var context = new MessageContext(message, channel);
 
-        [Fact]
-        public async Task Unknown()
+        /* When */
+        await sut.Handle(context);
+
+        /* Then */
+        var response = await ReadWithTimeout(channel);
+        Assert.Equal(new OperationMessage
         {
-            /* Given */
-            var channel = Channel.CreateUnbounded<OperationMessage>();
-            var queryStreamService = Substitute.For<IQueryStreamService>();
-            var sut = CreateSut(queryStreamService);
+            Type = MessageType.GQL_CONNECTION_ERROR
+        }, response);
+    }
 
-            var message = new OperationMessage
-            {
-                Type = "ARGHH"
-            };
+    [Fact]
+    public async Task Init()
+    {
+        /* Given */
+        var channel = Channel.CreateUnbounded<OperationMessage>();
+        var queryStreamService = Substitute.For<IQueryStreamService>();
+        var sut = CreateSut(queryStreamService);
 
-            var context = new MessageContext(message, channel);
+        var message = new OperationMessage
+        {
+            Type = MessageType.GQL_CONNECTION_INIT
+        };
 
-            /* When */
-            await sut.Handle(context);
+        var context = new MessageContext(message, channel);
 
-            /* Then */
-            var response = await ReadWithTimeout(channel);
-            Assert.Equal(new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_ERROR
-            }, response);
-        }
+        /* When */
+        await sut.Handle(context);
 
-        [Fact]
-        public async Task Init()
+        /* Then */
+        var response = await ReadWithTimeout(channel);
+        Assert.Equal(new OperationMessage
         {
-            /* Given */
-            var channel = Channel.CreateUnbounded<OperationMessage>();
-            var queryStreamService = Substitute.For<IQueryStreamService>();
-            var sut = CreateSut(queryStreamService);
+            Type = MessageType.GQL_CONNECTION_ACK
+        }, response);
+    }
 
-            var message = new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_INIT
-            };
+    [Fact]
+    public async Task Terminate()
+    {
+        /* Given */
+        var channel = Channel.CreateUnbounded<OperationMessage>();
+        var queryStreamService = Substitute.For<IQueryStreamService>();
+        var sut = CreateSut(queryStreamService);
 
-            var context = new MessageContext(message, channel);
+        var message = new OperationMessage
+        {
+            Type = MessageType.GQL_CONNECTION_TERMINATE
+        };
 
-            /* When */
-            await sut.Handle(context);
+        var context = new MessageContext(message, channel);
 
-            /* Then */
-            var response = await ReadWithTimeout(channel);
-            Assert.Equal(new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_ACK
-            }, response);
-        }
+        /* When */
+        await sut.Handle(context);
 
-        [Fact]
-        public async Task Terminate()
-        {
-            /* Given */
-            var channel = Channel.CreateUnbounded<OperationMessage>();
-            var queryStreamService = Substitute.For<IQueryStreamService>();
-            var sut = CreateSut(queryStreamService);
+        /* Then */
+        Assert.True(channel.Reader.Completion.IsCompleted);
+    }
 
-            var message = new OperationMessage
-            {
-                Type = MessageType.GQL_CONNECTION_TERMINATE
-            };
+    [Fact]
+    public async Task Start()
+    {
+        /* Given */
+        var output = Channel.CreateUnbounded<OperationMessage>();
+        var queryStreamService = Substitute.For<IQueryStreamService>();
 
-            var context = new MessageContext(message, channel);
+        var queryStream = Channel.CreateUnbounded<ExecutionResult>();
+        queryStreamService.QueryAsync(null, default)
+            .ReturnsForAnyArgs(new QueryStream(queryStream));
 
-            /* When */
-            await sut.Handle(context);
 
-            /* Then */
-            Assert.True(channel.Reader.Completion.IsCompleted);
-        }
+        var sut = CreateSut(queryStreamService);
 
-        [Fact]
-        public async Task Start()
+        var message = new OperationMessage
         {
-            /* Given */
-            var output = Channel.CreateUnbounded<OperationMessage>();
-            var queryStreamService = Substitute.For<IQueryStreamService>();
+            Id = "1",
+            Type = MessageType.GQL_START,
+            Payload = new OperationMessageQueryPayload
+            {
+                Query = "subscription { hello }"
+            }
+        };
 
-            var queryStream = Channel.CreateUnbounded<ExecutionResult>();
-            queryStreamService.QueryAsync(null, default)
-                .ReturnsForAnyArgs(new QueryStream(queryStream));
+        var context = new MessageContext(message, output);
 
+        /* When */
+        await sut.Handle(context);
 
-            var sut = CreateSut(queryStreamService);
+        /* Then */
+        var subscription = sut.GetSubscription(message.Id);
+        Assert.NotNull(subscription);
+    }
 
-            var message = new OperationMessage
+    [Fact]
+    public async Task Stop()
+    {
+        /* Given */
+        var output = Channel.CreateUnbounded<OperationMessage>();
+        var queryStreamService = Substitute.For<IQueryStreamService>();
+
+        var queryStream = Channel.CreateUnbounded<ExecutionResult>();
+        var queryResult = new QueryStream(queryStream);
+        queryStreamService.QueryAsync(null, default)
+            .ReturnsForAnyArgs(ci =>
             {
-                Id = "1",
-                Type = MessageType.GQL_START,
-                Payload = new OperationMessageQueryPayload()
-                {
-                    Query = "subscription { hello }"
-                }
-            };
-
-            var context = new MessageContext(message, output);
-
-            /* When */
-            await sut.Handle(context);
-
-            /* Then */
-            var subscription = sut.GetSubscription(message.Id);
-            Assert.NotNull(subscription);
-        }
-
-        [Fact]
-        public async Task Stop()
+                ci.Arg<CancellationToken>().Register(() => queryStream.Writer.Complete());
+                return queryResult;
+            });
+
+        var sut = CreateSut(queryStreamService);
+        var message = new OperationMessage
         {
-            /* Given */
-            var output = Channel.CreateUnbounded<OperationMessage>();
-            var queryStreamService = Substitute.For<IQueryStreamService>();
-
-            var queryStream = Channel.CreateUnbounded<ExecutionResult>();
-            var queryResult = new QueryStream(queryStream);
-            queryStreamService.QueryAsync(null, default)
-                .ReturnsForAnyArgs(ci =>
-                {
-                    ci.Arg<CancellationToken>().Register(() => queryStream.Writer.Complete());
-                    return queryResult;
-                });
-
-            var sut = CreateSut(queryStreamService);
-            var message = new OperationMessage
-            {
-                Id = "1",
-                Type = MessageType.GQL_START,
-                Payload = new OperationMessageQueryPayload()
-            };
+            Id = "1",
+            Type = MessageType.GQL_START,
+            Payload = new OperationMessageQueryPayload()
+        };
 
-            var context = new MessageContext(message, output);
-            await sut.Handle(context);
+        var context = new MessageContext(message, output);
+        await sut.Handle(context);
 
-            /* When */
-            await sut.Handle(new MessageContext(new OperationMessage()
-            {
-                Id = "1",
-                Type = MessageType.GQL_STOP
-            }, output));
-
-            /* Then */
-            var subscription = sut.GetSubscription(message.Id);
-            Assert.Equal(default, subscription);
-        }
+        /* When */
+        await sut.Handle(new MessageContext(new OperationMessage
+        {
+            Id = "1",
+            Type = MessageType.GQL_STOP
+        }, output));
+
+        /* Then */
+        var subscription = sut.GetSubscription(message.Id);
+        Assert.Equal(default, subscription);
+    }
+
+    protected ValueTask<OperationMessage> ReadWithTimeout(
+        Channel<OperationMessage> channel,
+        int timeoutSeconds = 10)
+    {
+        using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(timeoutSeconds));
+
+        return channel.Reader.ReadAsync(cts.Token);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/MessageSinkProtocol.cs b/tests/graphql.server.tests/webSockets/MessageSinkProtocol.cs
index ea5a7905a..b8d8f47ae 100644
--- a/tests/graphql.server.tests/webSockets/MessageSinkProtocol.cs
+++ b/tests/graphql.server.tests/webSockets/MessageSinkProtocol.cs
@@ -3,17 +3,16 @@
 using Tanka.GraphQL.Server.WebSockets;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class MessageSinkProtocol : IProtocolHandler
 {
-    public class MessageSinkProtocol : IProtocolHandler
-    {
-        private readonly Channel<OperationMessage> _messages = Channel.CreateUnbounded<OperationMessage>();
+    private readonly Channel<OperationMessage> _messages = Channel.CreateUnbounded<OperationMessage>();
 
-        public ChannelReader<OperationMessage> Input => _messages.Reader;
+    public ChannelReader<OperationMessage> Input => _messages.Reader;
 
-        public ValueTask Handle(MessageContext context)
-        {
-            return _messages.Writer.WriteAsync(context.Message);
-        }
+    public ValueTask Handle(MessageContext context)
+    {
+        return _messages.Writer.WriteAsync(context.Message);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/WebSocketConnection_ConnectionFacts.cs b/tests/graphql.server.tests/webSockets/WebSocketConnection_ConnectionFacts.cs
index b767aba3d..ad99fe536 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketConnection_ConnectionFacts.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketConnection_ConnectionFacts.cs
@@ -1,53 +1,52 @@
 using System.Net.WebSockets;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.Server.Tests.Host;
 using Microsoft.AspNetCore.Mvc.Testing;
+using Tanka.GraphQL.Server.Tests.Host;
 using Xunit;
 
 // ReSharper disable InconsistentNaming
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class WebSocketConnection_ConnectionFacts : WebSocketFactsBase
 {
-    public class WebSocketConnection_ConnectionFacts : WebSocketFactsBase
+    public WebSocketConnection_ConnectionFacts(WebApplicationFactory<Startup> factory) : base(factory)
+    {
+    }
+
+    [Fact]
+    public async Task Connect()
     {
-        public WebSocketConnection_ConnectionFacts(WebApplicationFactory<Startup> factory) : base(factory)
-        {
-        }
-
-        [Fact]
-        public async Task Connect()
-        {
-            /* Given */
-            /* When */
-            using var socket = await ConnectAsync();
-
-            /* Then */
-            Assert.Equal(WebSocketState.Open, socket.State);
-        }
-
-        [Fact]
-        public async Task Disconnect()
-        {
-            /* Given */
-            /* When */
-            using var socket = await ConnectAsync();
-            await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closed", CancellationToken.None);
-
-            /* Then */
-            Assert.Equal(WebSocketState.Closed, socket.State);
-        }
-
-        [Fact]
-        public async Task Disconnect_with_dispose()
-        {
-            /* Given */
-            /* When */
-            var socket = await ConnectAsync();
-            socket.Dispose();
-
-            /* Then */
-            Assert.Equal(WebSocketState.Closed, socket.State);
-        }
+        /* Given */
+        /* When */
+        using var socket = await ConnectAsync();
+
+        /* Then */
+        Assert.Equal(WebSocketState.Open, socket.State);
+    }
+
+    [Fact]
+    public async Task Disconnect()
+    {
+        /* Given */
+        /* When */
+        using var socket = await ConnectAsync();
+        await socket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closed", CancellationToken.None);
+
+        /* Then */
+        Assert.Equal(WebSocketState.Closed, socket.State);
+    }
+
+    [Fact]
+    public async Task Disconnect_with_dispose()
+    {
+        /* Given */
+        /* When */
+        var socket = await ConnectAsync();
+        socket.Dispose();
+
+        /* Then */
+        Assert.Equal(WebSocketState.Closed, socket.State);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs b/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
index b35a205a0..20c7e726f 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
@@ -6,105 +6,96 @@
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.Server.Tests.Host;
 using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Tanka.GraphQL.Server.Links.DTOs;
+using Tanka.GraphQL.Server.Tests.Host;
 using Tanka.GraphQL.Server.WebSockets;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 using Tanka.GraphQL.Server.WebSockets.DTOs.Serialization.Converters;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public abstract class WebSocketFactsBase : IClassFixture<WebApplicationFactory<Startup>>
 {
-    public abstract class WebSocketFactsBase : IClassFixture<WebApplicationFactory<Startup>>
+    private static readonly JsonSerializerOptions _jsonOptions = new()
     {
-        private HttpClient Client;
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        Converters =
+        {
+            new OperationMessageConverter(),
+            new ObjectDictionaryConverter()
+        }
+    };
 
-        protected WebApplicationFactory<Startup> Factory;
+    protected WebApplicationFactory<Startup> Factory;
+    private HttpClient Client;
 
-        private static readonly JsonSerializerOptions _jsonOptions = new JsonSerializerOptions()
+    protected WebSocketFactsBase(WebApplicationFactory<Startup> factory)
+    {
+        Sink = new MessageSinkProtocol();
+        Factory = factory.WithWebHostBuilder(builder =>
         {
-            PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
-            Converters =
-            {
-                new OperationMessageConverter(),
-                new ObjectDictionaryConverter()
-            }
-        };
+            builder.ConfigureServices(services => { services.TryAddSingleton<IProtocolHandler>(Sink); });
+        });
+        Client = Factory.CreateClient();
+        Application = Factory.Server.Host.Services.GetRequiredService<WebSocketServer>();
+    }
 
-        protected WebSocketFactsBase(WebApplicationFactory<Startup> factory)
-        {
-            Sink = new MessageSinkProtocol();
-            Factory = factory.WithWebHostBuilder(builder =>
-            {
-                builder.ConfigureServices(services => { services.TryAddSingleton<IProtocolHandler>(Sink); });
-            });
-            Client = Factory.CreateClient();
-            Application = Factory.Server.Host.Services.GetRequiredService<WebSocketServer>();
-        }
+    public WebSocketServer Application { get; set; }
 
-        public MessageSinkProtocol Sink { get; set; }
+    public MessageSinkProtocol Sink { get; set; }
 
-        public WebSocketServer Application { get; set; }
+    protected async Task<WebSocket> ConnectAsync()
+    {
+        var webSocketClient = Factory.Server.CreateWebSocketClient();
+        webSocketClient.ConfigureRequest = request => { request.Headers.Add("Sec-WebSocket-Protocol", "graphql-ws"); };
+        return await webSocketClient.ConnectAsync(new Uri("http://localhost/api/graphql"), CancellationToken.None);
+    }
 
-        protected async Task<WebSocket> ConnectAsync()
-        {
-            var webSocketClient = Factory.Server.CreateWebSocketClient();
-            webSocketClient.ConfigureRequest = request =>
-            {
-                request.Headers.Add("Sec-WebSocket-Protocol", "graphql-ws");
-            };
-            return await webSocketClient.ConnectAsync(new Uri("http://localhost/api/graphql"), CancellationToken.None);
-        }
+    protected OperationMessage DeserializeMessage(string json)
+    {
+        return JsonSerializer.Deserialize<OperationMessage>(json, _jsonOptions);
+    }
 
-        protected OperationMessage DeserializeMessage(string json)
-        {
-            return JsonSerializer.Deserialize<OperationMessage>(json, _jsonOptions);
-        }
+    protected byte[] SerializeMessage(OperationMessage message)
+    {
+        return JsonSerializer.SerializeToUtf8Bytes(message, _jsonOptions);
+    }
 
-        protected byte[] SerializeMessage(OperationMessage message)
-        {
-            return JsonSerializer.SerializeToUtf8Bytes(message, _jsonOptions);
-        }
+    protected async Task<string> ReadMessage(WebSocket socket)
+    {
+        string message;
+        var buffer = new byte[1024 * 4];
+        var segment = new ArraySegment<byte>(buffer);
 
-        protected async Task<string> ReadMessage(WebSocket socket)
+        using var memoryStream = new MemoryStream();
+        try
         {
-            string message;
-            var buffer = new byte[1024 * 4];
-            var segment = new ArraySegment<byte>(buffer);
+            WebSocketReceiveResult receiveResult;
 
-            using var memoryStream = new MemoryStream();
-            try
+            do
             {
-                WebSocketReceiveResult receiveResult;
+                receiveResult = await socket.ReceiveAsync(segment, CancellationToken.None);
 
-                do
-                {
-                    receiveResult = await socket.ReceiveAsync(segment, CancellationToken.None);
+                if (receiveResult.CloseStatus.HasValue)
+                    break;
 
-                    if (receiveResult.CloseStatus.HasValue)
-                        break;
+                if (receiveResult.Count == 0)
+                    continue;
 
-                    if (receiveResult.Count == 0)
-                        continue;
+                await memoryStream.WriteAsync(segment.Array, segment.Offset, receiveResult.Count);
+            } while (!receiveResult.EndOfMessage || memoryStream.Length == 0);
 
-                    await memoryStream.WriteAsync(segment.Array, segment.Offset, receiveResult.Count);
-                } while (!receiveResult.EndOfMessage || memoryStream.Length == 0);
+            message = Encoding.UTF8.GetString(memoryStream.ToArray());
 
-                message = Encoding.UTF8.GetString(memoryStream.ToArray());
-
-                return message;
-            }
-            catch (WebSocketException)
-            {
-                throw;
-            }
-            catch (Exception)
-            {
-                throw;
-            }
+            return message;
+        }
+        catch (WebSocketException)
+        {
+            throw;
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs b/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
index aca559489..0f725b274 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
@@ -10,50 +10,46 @@
 using Tanka.GraphQL.Tests.Data;
 using Xunit;
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class WebSocketServer_ProtocolFacts : WebSocketFactsBase
 {
-    public class WebSocketServer_ProtocolFacts : WebSocketFactsBase
-    {
-        public WebSocketServer_ProtocolFacts(WebApplicationFactory<Startup> factory)
-            : base(factory.WithWebHostBuilder(builder =>
-            {
-                builder.ConfigureServices(services =>
-                {
-                    services.AddScoped<IProtocolHandler, GraphQLWSProtocol>();
-                });
-            }))
+    public WebSocketServer_ProtocolFacts(WebApplicationFactory<Startup> factory)
+        : base(factory.WithWebHostBuilder(builder =>
         {
-        }
+            builder.ConfigureServices(services => { services.AddScoped<IProtocolHandler, GraphQLWSProtocol>(); });
+        }))
+    {
+    }
 
-        [Fact]
-        public async Task Start_query()
-        {
-            /* Given */
-            using var ws = await ConnectAsync();
+    [Fact]
+    public async Task Start_query()
+    {
+        /* Given */
+        using var ws = await ConnectAsync();
 
-            /* When */
-            await ws.SendAsync(SerializeMessage(new OperationMessage
+        /* When */
+        await ws.SendAsync(SerializeMessage(new OperationMessage
+        {
+            Id = "1",
+            Type = MessageType.GQL_START,
+            Payload = new OperationMessageQueryPayload
             {
-                Id = "1",
-                Type = MessageType.GQL_START,
-                Payload = new OperationMessageQueryPayload
-                {
-                    Query = "{ hello }",
-                    OperationName = null,
-                    Variables = new Dictionary<string, object>()
-                }
-            }), WebSocketMessageType.Text, true, CancellationToken.None);
+                Query = "{ hello }",
+                OperationName = null,
+                Variables = new Dictionary<string, object>()
+            }
+        }), WebSocketMessageType.Text, true, CancellationToken.None);
 
-            /* Then */
-            var json = await ReadMessage(ws);
-            var message = DeserializeMessage(json);
-            var executionResult = (ExecutionResult)message.Payload;
-            executionResult.ShouldMatchJson(
-                @"{
+        /* Then */
+        var json = await ReadMessage(ws);
+        var message = DeserializeMessage(json);
+        var executionResult = (ExecutionResult)message.Payload;
+        executionResult.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""hello"": ""world""
                   }
                 }");
-        }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/WebSocketServer_ReceiveMessageFacts.cs b/tests/graphql.server.tests/webSockets/WebSocketServer_ReceiveMessageFacts.cs
index 7d04b9aa3..e43ad51e7 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketServer_ReceiveMessageFacts.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketServer_ReceiveMessageFacts.cs
@@ -2,73 +2,72 @@
 using System.Net.WebSockets;
 using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.Server.Tests.Host;
 using Microsoft.AspNetCore.Mvc.Testing;
+using Tanka.GraphQL.Server.Tests.Host;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 using Xunit;
 
 // ReSharper disable InconsistentNaming
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class WebSocketServer_ReceiveMessageFacts : WebSocketFactsBase
 {
-    public class WebSocketServer_ReceiveMessageFacts : WebSocketFactsBase
+    public WebSocketServer_ReceiveMessageFacts(WebApplicationFactory<Startup> factory) : base(factory)
     {
-        public WebSocketServer_ReceiveMessageFacts(WebApplicationFactory<Startup> factory) : base(factory)
-        {
-        }
+    }
 
-        [Fact]
-        public async Task ReceiveOneMessage()
+    [Fact]
+    public async Task ReceiveOneMessage()
+    {
+        /* Given */
+        using var socket = await ConnectAsync();
+
+        var message = new OperationMessage
         {
-            /* Given */
-            using var socket = await ConnectAsync();
+            Id = "1",
+            Type = MessageType.GQL_CONNECTION_INIT
+        };
+        var bytes = SerializeMessage(message);
+
+        /* When */
+        await socket.SendAsync(bytes, WebSocketMessageType.Text, true, CancellationToken.None);
 
+        /* Then */
+        var actual = await Sink.Input.ReadAsync();
+        Assert.Equal(message, actual);
+    }
+
+    [Fact]
+    public async Task ReceiveThreeMessages()
+    {
+        /* Given */
+        using var socket = await ConnectAsync();
+        const int messageCount = 3;
+        var messages = new List<OperationMessage>();
+        for (var i = 0; i < messageCount; i++)
+        {
             var message = new OperationMessage
             {
-                Id = "1",
+                Id = $"{i}",
                 Type = MessageType.GQL_CONNECTION_INIT
             };
-            var bytes = SerializeMessage(message);
-
-            /* When */
-            await socket.SendAsync(bytes, WebSocketMessageType.Text, true, CancellationToken.None);
-
-            /* Then */
-            var actual = await Sink.Input.ReadAsync();
-            Assert.Equal(message, actual);
+            messages.Add(message);
         }
 
-        [Fact]
-        public async Task ReceiveThreeMessages()
+        /* When */
+        for (var i = 0; i < messageCount; i++)
         {
-            /* Given */
-            using var socket = await ConnectAsync();
-            const int messageCount = 3;
-            var messages = new List<OperationMessage>();
-            for (var i = 0; i < messageCount; i++)
-            {
-                var message = new OperationMessage
-                {
-                    Id = $"{i}",
-                    Type = MessageType.GQL_CONNECTION_INIT
-                };
-                messages.Add(message);
-            }
-
-            /* When */
-            for (var i = 0; i < messageCount; i++)
-            {
-                var bytes = SerializeMessage(messages[i]);
-                await socket.SendAsync(bytes, WebSocketMessageType.Text, true, CancellationToken.None);
-            }
+            var bytes = SerializeMessage(messages[i]);
+            await socket.SendAsync(bytes, WebSocketMessageType.Text, true, CancellationToken.None);
+        }
 
 
-            /* Then */
-            for (var i = 0; i < 3; i++)
-            {
-                var actualMessage = await Sink.Input.ReadAsync();
-                Assert.Equal(messages[i], actualMessage);
-            }
+        /* Then */
+        for (var i = 0; i < 3; i++)
+        {
+            var actualMessage = await Sink.Input.ReadAsync();
+            Assert.Equal(messages[i], actualMessage);
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.server.tests/webSockets/WebSocketServer_SendMessageFacts.cs b/tests/graphql.server.tests/webSockets/WebSocketServer_SendMessageFacts.cs
index d50a1589c..664491b6a 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketServer_SendMessageFacts.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketServer_SendMessageFacts.cs
@@ -1,79 +1,70 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
+using System.Collections.Generic;
 using System.Linq;
-using System.Net.WebSockets;
-using System.Text;
-using System.Threading;
 using System.Threading.Tasks;
-using Tanka.GraphQL.Server.Tests.Host;
 using Microsoft.AspNetCore.Mvc.Testing;
+using Tanka.GraphQL.Server.Tests.Host;
 using Tanka.GraphQL.Server.WebSockets.DTOs;
 using Xunit;
 
 // ReSharper disable InconsistentNaming
 
-namespace Tanka.GraphQL.Server.Tests.WebSockets
+namespace Tanka.GraphQL.Server.Tests.WebSockets;
+
+public class WebSocketServer_SendMessageFacts : WebSocketFactsBase
 {
-    public class WebSocketServer_SendMessageFacts : WebSocketFactsBase
+    public WebSocketServer_SendMessageFacts(WebApplicationFactory<Startup> factory) : base(factory)
     {
-        public WebSocketServer_SendMessageFacts(WebApplicationFactory<Startup> factory) : base(factory)
-        {
-        }
+    }
 
-        [Fact]
-        public async Task SendOneMessage()
-        {
-            /* Given */
-            using var socket = await ConnectAsync();
+    [Fact]
+    public async Task SendOneMessage()
+    {
+        /* Given */
+        using var socket = await ConnectAsync();
 
-            var message = new OperationMessage
-            {
-                Id = "1",
-                Type = MessageType.GQL_CONNECTION_INIT
-            };
+        var message = new OperationMessage
+        {
+            Id = "1",
+            Type = MessageType.GQL_CONNECTION_INIT
+        };
 
-            /* When */
-            await Application.Clients.Single().Value.Output.WriteAsync(message);
+        /* When */
+        await Application.Clients.Single().Value.Output.WriteAsync(message);
 
-            /* Then */
+        /* Then */
 
-            var json = await ReadMessage(socket);
-            var actual = DeserializeMessage(json);
-            Assert.Equal(message, actual);
-        }
+        var json = await ReadMessage(socket);
+        var actual = DeserializeMessage(json);
+        Assert.Equal(message, actual);
+    }
 
-        [Fact]
-        public async Task SendThreeMessages()
+    [Fact]
+    public async Task SendThreeMessages()
+    {
+        /* Given */
+        using var socket = await ConnectAsync();
+        const int messageCount = 3;
+        var messages = new List<OperationMessage>();
+        for (var i = 0; i < messageCount; i++)
         {
-            /* Given */
-            using var socket = await ConnectAsync();
-            const int messageCount = 3;
-            var messages = new List<OperationMessage>();
-            for (int i = 0; i < messageCount; i++)
+            var message = new OperationMessage
             {
-                var message = new OperationMessage
-                {
-                    Id = $"{i}",
-                    Type = MessageType.GQL_CONNECTION_INIT
-                };
-                messages.Add(message);
-            }
+                Id = $"{i}",
+                Type = MessageType.GQL_CONNECTION_INIT
+            };
+            messages.Add(message);
+        }
 
-            /* When */
-            for (int i = 0; i < messageCount; i++)
-            {
-                await Application.Clients.Single().Value.Output.WriteAsync(messages[i]);
-            }
+        /* When */
+        for (var i = 0; i < messageCount; i++) await Application.Clients.Single().Value.Output.WriteAsync(messages[i]);
 
 
-            /* Then */
-            for (int i = 0; i < 3; i++)
-            {
-                var json = await ReadMessage(socket);
-                var actualMessage = DeserializeMessage(json);
-                Assert.Equal(messages[i], actualMessage);
-            }
+        /* Then */
+        for (var i = 0; i < 3; i++)
+        {
+            var json = await ReadMessage(socket);
+            var actualMessage = DeserializeMessage(json);
+            Assert.Equal(messages[i], actualMessage);
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/DiffStyle.cs b/tests/graphql.tests.data/DiffStyle.cs
index 4bb151e06..be365da48 100644
--- a/tests/graphql.tests.data/DiffStyle.cs
+++ b/tests/graphql.tests.data/DiffStyle.cs
@@ -1,8 +1,7 @@
-namespace Tanka.GraphQL.Tests.Data
+namespace Tanka.GraphQL.Tests.Data;
+
+public enum DiffStyle
 {
-    public enum DiffStyle
-    {
-        Full, 
-        Minimal
-    }
+    Full,
+    Minimal
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/ExecutionResultExtensions.cs b/tests/graphql.tests.data/ExecutionResultExtensions.cs
index 74b5cc2a1..2a821ed9b 100644
--- a/tests/graphql.tests.data/ExecutionResultExtensions.cs
+++ b/tests/graphql.tests.data/ExecutionResultExtensions.cs
@@ -4,31 +4,30 @@
 using Newtonsoft.Json.Serialization;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Data
+namespace Tanka.GraphQL.Tests.Data;
+
+public static class ExecutionResultExtensions
 {
-    public static class ExecutionResultExtensions
+    public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
     {
-        public static void ShouldMatchJson(this ExecutionResult actualResult, string expectedJson)
-        {
-            if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
-            if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
+        if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
+        if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
 
-            var actualJson = JToken.FromObject(actualResult,
-                JsonSerializer.Create(new JsonSerializerSettings()
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var actualJson = JToken.FromObject(actualResult,
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var expectedJsonObject = JObject.FromObject(
-                JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
-                JsonSerializer.Create(new JsonSerializerSettings()
-                {
-                    ContractResolver = new CamelCasePropertyNamesContractResolver()
-                }));
+        var expectedJsonObject = JObject.FromObject(
+            JsonConvert.DeserializeObject<ExecutionResult>(expectedJson),
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
 
-            var jsonEqual = JToken.DeepEquals(expectedJsonObject, actualJson);
-            Assert.True(jsonEqual,
-                $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
-        }
+        var jsonEqual = JToken.DeepEquals(expectedJsonObject, actualJson);
+        Assert.True(jsonEqual,
+            $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/TestHelpers.cs b/tests/graphql.tests.data/TestHelpers.cs
index 10a2dffcb..2f82d3064 100644
--- a/tests/graphql.tests.data/TestHelpers.cs
+++ b/tests/graphql.tests.data/TestHelpers.cs
@@ -1,68 +1,58 @@
 using System;
 using System.Globalization;
-using System.IO;
 using System.Text;
-using Xunit;
 
-namespace Tanka.GraphQL.Tests.Data
+namespace Tanka.GraphQL.Tests.Data;
+
+public static class TestHelpers
 {
-    public static class TestHelpers
+    public static string Diff(string actualValue, string expectedValue)
     {
-        public static string Diff(string actualValue, string expectedValue)
-        {
-            return Diff(actualValue, expectedValue, DiffStyle.Minimal, new StringBuilder());
-        }
+        return Diff(actualValue, expectedValue, DiffStyle.Minimal, new StringBuilder());
+    }
 
-        public static string Diff(string actualValue, string expectedValue, DiffStyle diffStyle, StringBuilder output)
-        {
-            if(actualValue == null || expectedValue == null)
-            {
-                return string.Empty;
-            }
+    public static string Diff(string actualValue, string expectedValue, DiffStyle diffStyle, StringBuilder output)
+    {
+        if (actualValue == null || expectedValue == null) return string.Empty;
 
-            if (actualValue.Equals(expectedValue, StringComparison.Ordinal)) 
-                return string.Empty;
+        if (actualValue.Equals(expectedValue, StringComparison.Ordinal))
+            return string.Empty;
 
-            output.AppendLine("  Idx Expected  Actual");
-            output.AppendLine("-------------------------");
-            int maxLen = Math.Max(actualValue.Length, expectedValue.Length);
-            int minLen = Math.Min(actualValue.Length, expectedValue.Length);
-            for (int i = 0; i < maxLen; i++)
-            {
-                if (diffStyle != DiffStyle.Minimal || i >= minLen || actualValue[i] != expectedValue[i])
-                {
-                    output.AppendLine($"{(i < minLen && actualValue[i] == expectedValue[i] ? " " : "*")} {i,-3} {(i < expectedValue.Length ? ((int)expectedValue[i]).ToString() : ""),-4} {(i < expectedValue.Length ? expectedValue[i].ToSafeString() : ""),-3}  {(i < actualValue.Length ? ((int)actualValue[i]).ToString() : ""),-4} {(i < actualValue.Length ? actualValue[i].ToSafeString() : ""),-3}" // character safe string
-                    );
-                }
-            }
-            output.AppendLine();
+        output.AppendLine("  Idx Expected  Actual");
+        output.AppendLine("-------------------------");
+        var maxLen = Math.Max(actualValue.Length, expectedValue.Length);
+        var minLen = Math.Min(actualValue.Length, expectedValue.Length);
+        for (var i = 0; i < maxLen; i++)
+            if (diffStyle != DiffStyle.Minimal || i >= minLen || actualValue[i] != expectedValue[i])
+                output.AppendLine(
+                    $"{(i < minLen && actualValue[i] == expectedValue[i] ? " " : "*")} {i,-3} {(i < expectedValue.Length ? ((int)expectedValue[i]).ToString() : ""),-4} {(i < expectedValue.Length ? expectedValue[i].ToSafeString() : ""),-3}  {(i < actualValue.Length ? ((int)actualValue[i]).ToString() : ""),-4} {(i < actualValue.Length ? actualValue[i].ToSafeString() : ""),-3}" // character safe string
+                );
+        output.AppendLine();
 
-            return output.ToString();
-        }
+        return output.ToString();
+    }
 
-        private static string ToSafeString(this char c)
-        {
-            if (Char.IsControl(c) || Char.IsWhiteSpace(c))
+    private static string ToSafeString(this char c)
+    {
+        if (char.IsControl(c) || char.IsWhiteSpace(c))
+            switch (c)
             {
-                switch (c)
-                {
-                    case '\r':
-                        return @"\r";
-                    case '\n':
-                        return @"\n";
-                    case '\t':
-                        return @"\t";
-                    case '\a':
-                        return @"\a";
-                    case '\v':
-                        return @"\v";
-                    case '\f':
-                        return @"\f";
-                    default:
-                        return String.Format("\\u{0:X};", (int)c);
-                }
+                case '\r':
+                    return @"\r";
+                case '\n':
+                    return @"\n";
+                case '\t':
+                    return @"\t";
+                case '\a':
+                    return @"\a";
+                case '\v':
+                    return @"\v";
+                case '\f':
+                    return @"\f";
+                default:
+                    return string.Format("\\u{0:X};", (int)c);
             }
-            return c.ToString(CultureInfo.InvariantCulture);
-        }
+
+        return c.ToString(CultureInfo.InvariantCulture);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests.data/starwars/Starwars.cs b/tests/graphql.tests.data/starwars/Starwars.cs
index 1461d189f..a65829779 100644
--- a/tests/graphql.tests.data/starwars/Starwars.cs
+++ b/tests/graphql.tests.data/starwars/Starwars.cs
@@ -2,98 +2,97 @@
 using System.Linq;
 using System.Threading.Tasks;
 
-namespace Tanka.GraphQL.Tests.Data.Starwars
+namespace Tanka.GraphQL.Tests.Data.Starwars;
+
+public class Starwars
 {
-    public class Starwars
+    public Starwars()
     {
-        public Starwars()
+        var hanSolo = new Human(this)
         {
-            var hanSolo = new Human(this)
-            {
-                Id = "humans/han",
-                Name = "Han",
-                HomePlanet = null,
-                AppearsIn = { "JEDI", "EMPIRE", "NEWHOPE"}
-            };
-            var luke = new Human(this)
+            Id = "humans/han",
+            Name = "Han",
+            HomePlanet = null,
+            AppearsIn = { "JEDI", "EMPIRE", "NEWHOPE" }
+        };
+        var luke = new Human(this)
+        {
+            Id = "humans/luke",
+            Name = "Luke",
+            HomePlanet = "Tatooine",
+            Friends =
             {
-                Id = "humans/luke",
-                Name = "Luke",
-                HomePlanet = "Tatooine",
-                Friends =
-                {
-                    hanSolo.Id
-                },
-                AppearsIn = { "JEDI", "EMPIRE", "NEWHOPE"}
-            };
-
-            hanSolo.Friends.Add(luke.Id);
-
-            Characters.Add(hanSolo);
-            Characters.Add(luke);
-        }
+                hanSolo.Id
+            },
+            AppearsIn = { "JEDI", "EMPIRE", "NEWHOPE" }
+        };
 
-        public List<Character> Characters { get; } = new List<Character>();
+        hanSolo.Friends.Add(luke.Id);
 
-        public async Task<Human> GetHuman(string id)
-        {
-            await Task.Delay(0);
-            return Characters.OfType<Human>().SingleOrDefault(h => h.Id == id);
-        }
+        Characters.Add(hanSolo);
+        Characters.Add(luke);
+    }
 
-        public async Task<Character> GetCharacter(string id)
-        {
-            await Task.Delay(0);
-            return Characters.SingleOrDefault(h => h.Id == id);
-        }
+    public List<Character> Characters { get; } = new();
 
-        private IEnumerable<Character> GetFriendsOf(Human human)
-        {
-            return human.Friends.Select(f => Characters.Single(c => c.Id == f));
-        }
+    public async Task<Human> GetHuman(string id)
+    {
+        await Task.Delay(0);
+        return Characters.OfType<Human>().SingleOrDefault(h => h.Id == id);
+    }
 
-        public abstract class Character
-        {
-            public string Id { get; set; }
+    public async Task<Character> GetCharacter(string id)
+    {
+        await Task.Delay(0);
+        return Characters.SingleOrDefault(h => h.Id == id);
+    }
 
-            public string Name { get; set; }
+    public Human AddHuman(string name)
+    {
+        var human = new Human(this)
+        {
+            Id = $"humans/{name.ToLowerInvariant()}",
+            Name = name
+        };
 
-            public abstract IEnumerable<Character> GetFriends();
-        }
+        Characters.Add(human);
 
-        public class Human : Character
-        {
-            private readonly Starwars _starwars;
+        return human;
+    }
 
-            public Human(Starwars starwars)
-            {
-                _starwars = starwars;
-            }
+    private IEnumerable<Character> GetFriendsOf(Human human)
+    {
+        return human.Friends.Select(f => Characters.Single(c => c.Id == f));
+    }
 
-            public string HomePlanet { get; set; }
+    public abstract class Character
+    {
+        public string Id { get; set; }
 
-            public List<string> Friends { get; } = new List<string>();
+        public string Name { get; set; }
 
-            public List<string> AppearsIn { get; } = new List<string>();
+        public abstract IEnumerable<Character> GetFriends();
+    }
 
+    public class Human : Character
+    {
+        private readonly Starwars _starwars;
 
-            public override IEnumerable<Character> GetFriends()
-            {
-                return _starwars.GetFriendsOf(this);
-            }
+        public Human(Starwars starwars)
+        {
+            _starwars = starwars;
         }
 
-        public Human AddHuman(string name)
-        {
-            var human = new Human(this)
-            {
-                Id = $"humans/{name.ToLowerInvariant()}",
-                Name = name
-            };
+        public List<string> AppearsIn { get; } = new();
+
+        public List<string> Friends { get; } = new();
 
-            Characters.Add(human);
+        public string HomePlanet { get; set; }
 
-            return human;
+
+        public override IEnumerable<Character> GetFriends()
+        {
+            return _starwars.GetFriendsOf(this);
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Analysis/CostFacts.cs b/tests/graphql.tests/Analysis/CostFacts.cs
index 72e7a70d5..146436fe8 100644
--- a/tests/graphql.tests/Analysis/CostFacts.cs
+++ b/tests/graphql.tests/Analysis/CostFacts.cs
@@ -45,8 +45,8 @@ public void Cost_above_max_cost_with_costDirective()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 0,
-                defaultFieldComplexity: 0)
+                0,
+                0)
         );
 
         /* Then */
@@ -69,8 +69,8 @@ public void Cost_above_max_cost_with_costDirective_and_multiplier()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 5,
-                defaultFieldComplexity: 0)
+                5,
+                0)
         );
 
         /* Then */
@@ -93,8 +93,8 @@ public void Cost_above_max_cost_with_defaultComplexity()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 0,
-                defaultFieldComplexity: 1)
+                0,
+                1)
         );
 
         /* Then */
@@ -117,8 +117,8 @@ public void Cost_below_max_cost_with_defaultComplexity()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 1,
-                defaultFieldComplexity: 1)
+                1,
+                1)
         );
 
         /* Then */
@@ -138,8 +138,8 @@ public void Cost_below_max_cost_with_with_costDirective()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 1,
-                defaultFieldComplexity: 0)
+                1,
+                0)
         );
 
         /* Then */
@@ -159,8 +159,8 @@ public void Cost_below_max_cost_with_with_costDirective_and_multiplier()
         var result = Validate(
             document,
             CostAnalyzer.MaxCost(
-                maxCost: 3,
-                defaultFieldComplexity: 0)
+                3,
+                0)
         );
 
         /* Then */
diff --git a/tests/graphql.tests/EventsModel.cs b/tests/graphql.tests/EventsModel.cs
index 4c2c4f524..806b69632 100644
--- a/tests/graphql.tests/EventsModel.cs
+++ b/tests/graphql.tests/EventsModel.cs
@@ -5,91 +5,89 @@
 using Tanka.GraphQL.Channels;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class EventsModel
 {
-    public class EventsModel
+    public enum EventType
     {
-        public enum EventType
-        {
-            INSERT,
-            UPDATE,
-            DELETE
-        }
+        INSERT,
+        UPDATE,
+        DELETE
+    }
 
-        public EventsModel()
-        {
-            Events = new List<Event>();
-        }
+    public EventsModel()
+    {
+        Events = new List<Event>();
+    }
 
-        public List<Event> Events { get; set; }
+    public EventChannel<Event> Broadcast { get; set; } = new();
 
-        public EventChannel<Event> Broadcast { get; set; } =
-            new EventChannel<Event>();
+    public List<Event> Events { get; set; }
 
-        public int LastId { get; set; } = 0;
+    public int LastId { get; set; }
 
-        public async Task<int> AddAsync(NewEvent newEvent)
+    public async Task<int> AddAsync(NewEvent newEvent)
+    {
+        LastId++;
+        var ev = new Event
         {
-            LastId++;
-            var ev = new Event
-            {
-                Id = LastId,
-                Type = newEvent.Type,
-                Payload = newEvent.Payload
-            };
-            Events.Add(ev);
-            await Broadcast.WriteAsync(ev);
-
-            return LastId;
-        }
+            Id = LastId,
+            Type = newEvent.Type,
+            Payload = newEvent.Payload
+        };
+        Events.Add(ev);
+        await Broadcast.WriteAsync(ev);
+
+        return LastId;
+    }
 
-        public ISubscriberResult Subscribe(CancellationToken unsubscribe)
-        {
-            return Broadcast.Subscribe(unsubscribe);
-        }
+    public ISubscriberResult Subscribe(CancellationToken unsubscribe)
+    {
+        return Broadcast.Subscribe(unsubscribe);
+    }
 
-        public class Success
-        {
-            public Success(int id, Event ev)
-            {
-                Id = id;
-                Event = ev;
-            }
-
-            public int Id { get; set; }
-            public Event Event { get; }
-        }
+    public class Event
+    {
+        public int Id { get; set; }
 
-        public class Failure
-        {
-            public Failure(string message)
-            {
-                Message = message;
-            }
+        public string Payload { get; set; }
 
-            public string Message { get; set; }
-        }
+        public EventType Type { get; set; }
+    }
 
-        public class Event
+    public class Failure
+    {
+        public Failure(string message)
         {
-            public int Id { get; set; }
+            Message = message;
+        }
 
-            public EventType Type { get; set; }
+        public string Message { get; set; }
+    }
 
-            public string Payload { get; set; }
+    public class NewEvent : IReadFromObjectDictionary
+    {
+        public string Payload { get; set; }
+        public EventType Type { get; set; }
+
+        public void Read(IReadOnlyDictionary<string, object> source)
+        {
+            Type = (EventType)Enum.Parse(typeof(EventType), source.GetValue<string>("type"));
+            Payload = source.GetValue<string>("payload");
         }
+    }
 
-        public class NewEvent : IReadFromObjectDictionary
+    public class Success
+    {
+        public Success(int id, Event ev)
         {
-            public EventType Type { get; set; }
+            Id = id;
+            Event = ev;
+        }
 
-            public string Payload { get; set; }
+        public Event Event { get; }
 
-            public void Read(IReadOnlyDictionary<string, object> source)
-            {
-                Type = (EventType)Enum.Parse(typeof(EventType), source.GetValue<string>("type"));
-                Payload = source.GetValue<string>("payload");
-            }
-        }
+        public int Id { get; set; }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Execution/NodePathFacts.cs b/tests/graphql.tests/Execution/NodePathFacts.cs
index f0dd33ccd..a312e62e3 100644
--- a/tests/graphql.tests/Execution/NodePathFacts.cs
+++ b/tests/graphql.tests/Execution/NodePathFacts.cs
@@ -1,69 +1,66 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Execution;
+using Tanka.GraphQL.Execution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Execution
+namespace Tanka.GraphQL.Tests.Execution;
+
+public class NodePathFacts
 {
-    public class NodePathFacts
+    [Fact]
+    public void Append_fieldName_segment()
     {
-        [Fact]
-        public void Append_fieldName_segment()
-        {
-            /* Given */
-            var sut = new NodePath();
-
-            /* When */
-            sut.Append("fieldName");
+        /* Given */
+        var sut = new NodePath();
 
-            /* Then */
-            Assert.Contains("fieldName", sut.Segments);
-        }
+        /* When */
+        sut.Append("fieldName");
 
-        [Fact]
-        public void Append_index_segment()
-        {
-            /* Given */
-            var sut = new NodePath();
+        /* Then */
+        Assert.Contains("fieldName", sut.Segments);
+    }
 
-            /* When */
-            sut.Append(0);
+    [Fact]
+    public void Append_index_segment()
+    {
+        /* Given */
+        var sut = new NodePath();
 
-            /* Then */
-            Assert.Contains(0, sut.Segments);
-        }
+        /* When */
+        sut.Append(0);
 
-        [Fact]
-        public void Fork_matches_original()
-        {
-            /* Given */
-            var sut = new NodePath();
-            sut.Append("humans");
-            sut.Append(0);
-            sut.Append("name");
+        /* Then */
+        Assert.Contains(0, sut.Segments);
+    }
 
-            /* When */
-            var fork = sut.Fork();
+    [Fact]
+    public void Fork_matches_original()
+    {
+        /* Given */
+        var sut = new NodePath();
+        sut.Append("humans");
+        sut.Append(0);
+        sut.Append("name");
 
-            /* Then */
-            Assert.Equal(sut.Segments, fork.Segments);
-        }
+        /* When */
+        var fork = sut.Fork();
 
-        [Fact]
-        public void Fork_is_separate()
-        {
-            /* Given */
-            var sut = new NodePath();
-            sut.Append("humans");
-            sut.Append(0);
-            sut.Append("name");
-            var fork = sut.Fork();
+        /* Then */
+        Assert.Equal(sut.Segments, fork.Segments);
+    }
 
-            /* When */
-            fork.Append(0);
+    [Fact]
+    public void Fork_is_separate()
+    {
+        /* Given */
+        var sut = new NodePath();
+        sut.Append("humans");
+        sut.Append(0);
+        sut.Append("name");
+        var fork = sut.Fork();
 
-            /* Then */
-            Assert.NotEqual(sut.Segments, fork.Segments);
+        /* When */
+        fork.Append(0);
 
-        }
+        /* Then */
+        Assert.NotEqual(sut.Segments, fork.Segments);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ExecutionPathFacts.cs b/tests/graphql.tests/ExecutionPathFacts.cs
index 712a7d606..0c5623c3f 100644
--- a/tests/graphql.tests/ExecutionPathFacts.cs
+++ b/tests/graphql.tests/ExecutionPathFacts.cs
@@ -1,20 +1,22 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Tanka.GraphQL.Language.Nodes.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
 using Tanka.GraphQL.TypeSystem;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class ExecutionPathFacts
 {
-    public class ExecutionPathFacts
+    private readonly ISchema _schema;
+
+    public ExecutionPathFacts()
     {
-        public ExecutionPathFacts()
-        {
-            // schema
-            var builder = new SchemaBuilder();
+        // schema
+        var builder = new SchemaBuilder();
 
-            builder.Add((TypeSystemDocument)@"
+        builder.Add((TypeSystemDocument)@"
 type Node {
     child: Node
     path: [String]
@@ -31,48 +33,46 @@ type Mutation {
 }
 
 ");
-            
-            var resolvers = new ResolversMap()
+
+        var resolvers = new ResolversMap
+        {
             {
+                "Query", new FieldResolversMap
                 {
-                    "Query", new FieldResolversMap
-                    {
-                        {"root", context => new ValueTask<IResolverResult>(Resolve.As(new { }))}
-                    }
-                },
+                    { "root", context => new ValueTask<IResolverResult>(Resolve.As(new { })) }
+                }
+            },
+            {
+                "Mutation", new FieldResolversMap
                 {
-                    "Mutation", new FieldResolversMap
-                    {
-                        {"root", context => new ValueTask<IResolverResult>(Resolve.As(new { }))}
-                    }
-                },
+                    { "root", context => new ValueTask<IResolverResult>(Resolve.As(new { })) }
+                }
+            },
+            {
+                "Node", new FieldResolversMap
                 {
-                    "Node", new FieldResolversMap
+                    { "child", context => new ValueTask<IResolverResult>(Resolve.As(new { })) },
                     {
-                        {"child", context => new ValueTask<IResolverResult>(Resolve.As(new { }))},
+                        "children", context => new ValueTask<IResolverResult>(Resolve.As(new[]
                         {
-                            "children", context => new ValueTask<IResolverResult>(Resolve.As(new[]
-                            {
-                                new {id = 0},
-                                new {id = 1}
-                            }))
-                        },
-                        {"value", context => new ValueTask<IResolverResult>(Resolve.As("value"))},
-                        {"path", context => new ValueTask<IResolverResult>(Resolve.As(context.Path.Segments))}
-                    }
+                            new { id = 0 },
+                            new { id = 1 }
+                        }))
+                    },
+                    { "value", context => new ValueTask<IResolverResult>(Resolve.As("value")) },
+                    { "path", context => new ValueTask<IResolverResult>(Resolve.As(context.Path.Segments)) }
                 }
-            };
-
-            _schema = builder.Build(resolvers).Result;
-        }
+            }
+        };
 
-        private readonly ISchema _schema;
+        _schema = builder.Build(resolvers).Result;
+    }
 
-        [Fact]
-        public async Task Mutation_path_should_match()
-        {
-            /* Given */
-            var query = @"
+    [Fact]
+    public async Task Mutation_path_should_match()
+    {
+        /* Given */
+        var query = @"
 mutation Root {
     root {
         value
@@ -89,43 +89,43 @@ mutation Root {
 }
 ";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document = query
-            });
-
-            /* Then */
-            var rootPath = result.Select("root", "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "path"
-            }, rootPath);
-            var rootChildPath = result.Select("root", "child", "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "child",
-                "path"
-            }, rootChildPath);
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            var rootChildrenFirstPath = result.Select("root", "children", 0, "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "children",
-                "0",
-                "path"
-            }, rootChildrenFirstPath);
-        }
+        /* Then */
+        var rootPath = result.Select("root", "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
+        {
+            "root",
+            "path"
+        }, rootPath);
+        var rootChildPath = result.Select("root", "child", "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
+        {
+            "root",
+            "child",
+            "path"
+        }, rootChildPath);
 
-        [Fact]
-        public async Task Query_path_should_match()
+        var rootChildrenFirstPath = result.Select("root", "children", 0, "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
         {
-            /* Given */
-            var query = @"
+            "root",
+            "children",
+            "0",
+            "path"
+        }, rootChildrenFirstPath);
+    }
+
+    [Fact]
+    public async Task Query_path_should_match()
+    {
+        /* Given */
+        var query = @"
 {
     root {
         value
@@ -142,36 +142,35 @@ public async Task Query_path_should_match()
 }
 ";
 
-            /* When */
-            var result = await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _schema,
-                Document = query
-            });
+        /* When */
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _schema,
+            Document = query
+        });
 
-            /* Then */
-            var rootPath = result.Select("root", "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "path"
-            }, rootPath);
-            var rootChildPath = result.Select("root", "child", "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "child",
-                "path"
-            }, rootChildPath);
+        /* Then */
+        var rootPath = result.Select("root", "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
+        {
+            "root",
+            "path"
+        }, rootPath);
+        var rootChildPath = result.Select("root", "child", "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
+        {
+            "root",
+            "child",
+            "path"
+        }, rootChildPath);
 
-            var rootChildrenFirstPath = result.Select("root", "children", 0, "path") as IEnumerable<object>;
-            Assert.Equal(new object[]
-            {
-                "root",
-                "children",
-                "0",
-                "path"
-            }, rootChildrenFirstPath);
-        }
+        var rootChildrenFirstPath = result.Select("root", "children", 0, "path") as IEnumerable<object>;
+        Assert.Equal(new object[]
+        {
+            "root",
+            "children",
+            "0",
+            "path"
+        }, rootChildrenFirstPath);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ExecutorFacts.cs b/tests/graphql.tests/ExecutorFacts.cs
index 5283588d9..8734ad1b2 100644
--- a/tests/graphql.tests/ExecutorFacts.cs
+++ b/tests/graphql.tests/ExecutorFacts.cs
@@ -155,7 +155,7 @@ public ExecutorFacts(ITestOutputHelper atr)
     public async Task Mutation1()
     {
         /* Given */
-        var mutation = 
+        var mutation =
             @"mutation AddEvent($event: NewEvent!) {
                     create(event: $event) {
                         __typename
@@ -201,7 +201,7 @@ ...on Failure {
     public async Task Mutation2()
     {
         /* Given */
-        var mutation = 
+        var mutation =
             @"mutation AddEvent($event: NewEvent!) {
                     create(event: $event) {
                         __typename
diff --git a/tests/graphql.tests/Extensions/ExtensionsImportProviderFacts.cs b/tests/graphql.tests/Extensions/ExtensionsImportProviderFacts.cs
index c4aac318c..b7957304b 100644
--- a/tests/graphql.tests/Extensions/ExtensionsImportProviderFacts.cs
+++ b/tests/graphql.tests/Extensions/ExtensionsImportProviderFacts.cs
@@ -2,44 +2,43 @@
 using Tanka.GraphQL.Extensions;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Extensions
+namespace Tanka.GraphQL.Tests.Extensions;
+
+public class ExtensionsImportProviderFacts
 {
-    public class ExtensionsImportProviderFacts
+    private readonly ParserOptions _options;
+    private readonly ExtensionsImportProvider _sut;
+
+    public ExtensionsImportProviderFacts()
+    {
+        _options = new ParserOptions();
+        _sut = new ExtensionsImportProvider();
+    }
+
+    [Theory]
+    [InlineData("cost-analysis")]
+    public void Can_Import(string extension)
     {
-        private readonly ExtensionsImportProvider _sut;
-        private readonly ParserOptions _options;
-
-        public ExtensionsImportProviderFacts()
-        {
-            _options = new ParserOptions();
-            _sut = new ExtensionsImportProvider();
-        }
-
-        [Theory]
-        [InlineData("cost-analysis")]
-        public void Can_Import(string extension)
-        {
-            /* Given */
-            var path = $"tanka://{extension}";
-
-            /* When */
-            /* Then */
-            Assert.True(_sut.CanImport(path, null));
-        }
-
-        [Theory]
-        [InlineData("cost-analysis")]
-        public async Task Import(string extension)
-        {
-            /* Given */
-            var path = $"tanka://{extension}";
-
-            /* When */
-            var typeDefs = await _sut.ImportAsync(path, null, _options);
-
-            /* Then */
-            Assert.NotNull(typeDefs.DirectiveDefinitions);
-            Assert.NotEmpty(typeDefs.DirectiveDefinitions);
-        }
+        /* Given */
+        var path = $"tanka://{extension}";
+
+        /* When */
+        /* Then */
+        Assert.True(_sut.CanImport(path, null));
+    }
+
+    [Theory]
+    [InlineData("cost-analysis")]
+    public async Task Import(string extension)
+    {
+        /* Given */
+        var path = $"tanka://{extension}";
+
+        /* When */
+        var typeDefs = await _sut.ImportAsync(path, null, _options);
+
+        /* Then */
+        Assert.NotNull(typeDefs.DirectiveDefinitions);
+        Assert.NotEmpty(typeDefs.DirectiveDefinitions);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/ExtensionsRunnerFacts.cs b/tests/graphql.tests/ExtensionsRunnerFacts.cs
index 5e0174926..40da83451 100644
--- a/tests/graphql.tests/ExtensionsRunnerFacts.cs
+++ b/tests/graphql.tests/ExtensionsRunnerFacts.cs
@@ -1,23 +1,22 @@
 using NSubstitute;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests
+namespace Tanka.GraphQL.Tests;
+
+public class ExtensionsRunnerFacts
 {
-    public class ExtensionsRunnerFacts
+    [Fact]
+    public void Get_ExtensionScope_by_type()
     {
-        [Fact]
-        public void Get_ExtensionScope_by_type()
-        {
-            /* Given */
-            var expected = Substitute.For<IExtensionScope>();
+        /* Given */
+        var expected = Substitute.For<IExtensionScope>();
 
-            var sut = new ExtensionsRunner(new []{expected});
+        var sut = new ExtensionsRunner(new[] { expected });
 
-            /* When */
-            var actual = sut.Extension(expected.GetType());
+        /* When */
+        var actual = sut.Extension(expected.GetType());
 
-            /* Then */
-            Assert.Same(expected, actual);
-        }
+        /* Then */
+        Assert.Same(expected, actual);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
index 1e3e56408..db580f25f 100644
--- a/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
+++ b/tests/graphql.tests/Introspection/IntrospectSchemaFacts.cs
@@ -1,19 +1,23 @@
 using System.Threading.Tasks;
-using Tanka.GraphQL.Introspection;
 using Tanka.GraphQL.Tests.Data;
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
 // ReSharper disable InconsistentNaming
 
-namespace Tanka.GraphQL.Tests.Introspection
+namespace Tanka.GraphQL.Tests.Introspection;
+
+public class IntrospectSchemaFacts
 {
-    public class IntrospectSchemaFacts
+    public const string ObjectTypeName = "Object";
+    public const string ScalarFieldName = "int";
+
+    private readonly ISchema _introspectionSchema;
+
+    public IntrospectSchemaFacts()
     {
-        public IntrospectSchemaFacts()
-        {
-            var builder = new SchemaBuilder();
-            builder.Add(@"
+        var builder = new SchemaBuilder();
+        builder.Add(@"
 
 """"""Description""""""
 interface Interface 
@@ -69,40 +73,25 @@ type Subscription {}
 ");
 
 
-            _introspectionSchema = builder.Build(new SchemaBuildOptions()).Result;
-        }
-
-        private readonly ISchema _introspectionSchema;
-
-        public const string ObjectTypeName = "Object";
-        public const string ScalarFieldName = "int";
-
-        private async Task<ExecutionResult> QueryAsync(string query)
-        {
-            return await Executor.ExecuteAsync(new ExecutionOptions
-            {
-                Schema = _introspectionSchema,
-                Document = query,
-                IncludeExceptionDetails = true
-            });
-        }
+        _introspectionSchema = builder.Build(new SchemaBuildOptions()).Result;
+    }
 
-        [Fact]
-        public async Task Schema_directives()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Schema_directives()
+    {
+        /* Given */
+        var query = @"{ 
                             __schema {
                                 directives { name }
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__schema"": {
       ""directives"": [
@@ -124,13 +113,13 @@ public async Task Schema_directives()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Schema_root_types()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Schema_root_types()
+    {
+        /* Given */
+        var query = @"{ 
                             __schema {
                                 queryType { name }
                                 mutationType { name }
@@ -138,12 +127,12 @@ public async Task Schema_root_types()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""__schema"": {
                       ""queryType"": {
@@ -158,24 +147,24 @@ public async Task Schema_root_types()
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Schema_types()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Schema_types()
+    {
+        /* Given */
+        var query = @"{ 
                             __schema {
                                 types { name }
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__schema"": {
       ""types"": [
@@ -212,13 +201,13 @@ public async Task Schema_types()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_DirectiveType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_DirectiveType()
+    {
+        /* Given */
+        var query = @"{ 
                             __schema {
                                 directives {
                                     name
@@ -229,12 +218,12 @@ public async Task Type_DirectiveType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__schema"": {
       ""directives"": [
@@ -297,14 +286,14 @@ public async Task Type_DirectiveType()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_EnumType()
-        {
-            /* Given */
-            //todo(pekka): separate enumValues testing to own test
-            var query = @"{ 
+    [Fact]
+    public async Task Type_EnumType()
+    {
+        /* Given */
+        //todo(pekka): separate enumValues testing to own test
+        var query = @"{ 
                             __type(name: ""Enum"") {
                                 kind
                                 name
@@ -318,12 +307,12 @@ public async Task Type_EnumType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""kind"": ""ENUM"",
@@ -342,13 +331,13 @@ public async Task Type_EnumType()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_EnumType_include_deprecated()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_EnumType_include_deprecated()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Enum"") {
                                 kind
                                 name
@@ -362,12 +351,12 @@ public async Task Type_EnumType_include_deprecated()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""kind"": ""ENUM"",
@@ -392,13 +381,13 @@ public async Task Type_EnumType_include_deprecated()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_InputObjectType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_InputObjectType()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""InputObject"") {
                                 kind
                                 name
@@ -406,12 +395,12 @@ public async Task Type_InputObjectType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""kind"": ""INPUT_OBJECT"",
@@ -422,13 +411,13 @@ public async Task Type_InputObjectType()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_InputObjectType_fields()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_InputObjectType_fields()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""InputObject"") {
                                 inputFields {
                                     name
@@ -439,12 +428,12 @@ public async Task Type_InputObjectType_fields()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""__type"": {
                       ""inputFields"": [
@@ -461,13 +450,13 @@ public async Task Type_InputObjectType_fields()
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_InterfaceType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_InterfaceType()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Interface"") {
                                 kind
                                 name
@@ -477,12 +466,12 @@ public async Task Type_InterfaceType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""__type"": {
                       ""possibleTypes"": [
@@ -501,13 +490,13 @@ public async Task Type_InterfaceType()
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_ObjectType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_ObjectType()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Object"") {
                                 kind
                                 name
@@ -517,12 +506,12 @@ public async Task Type_ObjectType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""kind"": ""OBJECT"",
@@ -546,13 +535,13 @@ public async Task Type_ObjectType()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_ObjectType_fields()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_ObjectType_fields()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Object"") {
                                 fields { 
                                     name 
@@ -565,12 +554,12 @@ public async Task Type_ObjectType_fields()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""fields"": [
@@ -610,13 +599,13 @@ public async Task Type_ObjectType_fields()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_ObjectType_fields_args()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_ObjectType_fields_args()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Object"") {
                                 fields { 
                                     args { 
@@ -629,12 +618,12 @@ public async Task Type_ObjectType_fields_args()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""fields"": [
@@ -659,13 +648,13 @@ public async Task Type_ObjectType_fields_args()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_ScalarType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_ScalarType()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Int"") {
                                 kind
                                 name
@@ -673,12 +662,12 @@ public async Task Type_ScalarType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
                   ""data"": {
                     ""__type"": {
                       ""name"": ""Int"",
@@ -687,13 +676,13 @@ public async Task Type_ScalarType()
                     }
                   }
                 }");
-        }
+    }
 
-        [Fact]
-        public async Task Type_UnionType()
-        {
-            /* Given */
-            var query = @"{ 
+    [Fact]
+    public async Task Type_UnionType()
+    {
+        /* Given */
+        var query = @"{ 
                             __type(name: ""Union"") {
                                 kind
                                 name
@@ -702,12 +691,12 @@ public async Task Type_UnionType()
                             }
                         }";
 
-            /* When */
-            var result = await QueryAsync(query);
+        /* When */
+        var result = await QueryAsync(query);
 
-            /* Then */
-            result.ShouldMatchJson(
-                @"{
+        /* Then */
+        result.ShouldMatchJson(
+            @"{
   ""data"": {
     ""__type"": {
       ""kind"": ""UNION"",
@@ -726,6 +715,15 @@ public async Task Type_UnionType()
   ""extensions"": null,
   ""errors"": null
 }");
-        }
+    }
+
+    private async Task<ExecutionResult> QueryAsync(string query)
+    {
+        return await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = _introspectionSchema,
+            Document = query,
+            IncludeExceptionDetails = true
+        });
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs b/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
index dbfd857fe..f140e596f 100644
--- a/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
+++ b/tests/graphql.tests/Language/ImportProviders/FileSystemImportFacts.cs
@@ -2,16 +2,16 @@
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Language.ImportProviders
+namespace Tanka.GraphQL.Tests.Language.ImportProviders;
+
+public class FileSystemImportFacts
 {
-    public class FileSystemImportFacts
+    [Fact]
+    public async Task Parse_Sdl()
     {
-        [Fact]
-        public async Task Parse_Sdl()
-        {
-            /* Given */
-            var sdl =
-                  @"
+        /* Given */
+        var sdl =
+            @"
                     """"""
                     tanka_import from ""Files/Import""
                     """"""
@@ -21,22 +21,21 @@ type Query {
                     }
                  ";
 
-            /* When */
-            var builder = new SchemaBuilder()
-                // BuiltIn import providers are used
-                .Add(sdl);
-
-            var schema = await builder.Build(new SchemaBuildOptions());
-
-            /* Then */
-            var importedType = schema.GetNamedType("ImportedType");
-            Assert.NotNull(importedType);
-           
-            var importedField = schema.GetField(schema.Query.Name, "imported");
-            Assert.Equal(importedType.Name, importedField.Type.Unwrap().Name);
-            
-            var nestedType = schema.GetNamedType("NestedObject");
-            Assert.NotNull(nestedType);
-        }
+        /* When */
+        var builder = new SchemaBuilder()
+            // BuiltIn import providers are used
+            .Add(sdl);
+
+        var schema = await builder.Build(new SchemaBuildOptions());
+
+        /* Then */
+        var importedType = schema.GetNamedType("ImportedType");
+        Assert.NotNull(importedType);
+
+        var importedField = schema.GetField(schema.Query.Name, "imported");
+        Assert.Equal(importedType.Name, importedField.Type.Unwrap().Name);
+
+        var nestedType = schema.GetNamedType("NestedObject");
+        Assert.NotNull(nestedType);
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/SDL/GithubSchemaFacts.cs b/tests/graphql.tests/SDL/GithubSchemaFacts.cs
index ea9483053..345cc7313 100644
--- a/tests/graphql.tests/SDL/GithubSchemaFacts.cs
+++ b/tests/graphql.tests/SDL/GithubSchemaFacts.cs
@@ -6,35 +6,34 @@
 using Tanka.GraphQL.TypeSystem;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.SDL
+namespace Tanka.GraphQL.Tests.SDL;
+
+public class GithubSchemaFacts
 {
-    public class GithubSchemaFacts
+    [Fact]
+    public async Task LoadSchema()
     {
-        private static string GetGitHubSchema()
-        {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream = assembly.GetManifestResourceStream("Tanka.GraphQL.Tests.github.graphql");
-            using (var reader =
-                new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
-            {
-                return reader.ReadToEnd();
-            }
-        }
+        /* Given */
+        var sdl = GetGitHubSchema();
 
-        [Fact]
-        public async Task LoadSchema()
-        {
-            /* Given */
-            var sdl = GetGitHubSchema();
+        /* When */
+        var schema = await new SchemaBuilder()
+            .Add(sdl)
+            .Build(new SchemaBuildOptions());
 
-            /* When */
-            var schema = await new SchemaBuilder()
-                .Add(sdl)
-                .Build(new SchemaBuildOptions());
+        /* Then */
+        Assert.NotNull(schema);
+        Assert.NotNull(schema.Query);
+    }
 
-            /* Then */
-            Assert.NotNull(schema);
-            Assert.NotNull(schema.Query);
+    private static string GetGitHubSchema()
+    {
+        var assembly = Assembly.GetExecutingAssembly();
+        var resourceStream = assembly.GetManifestResourceStream("Tanka.GraphQL.Tests.github.graphql");
+        using (var reader =
+               new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
+        {
+            return reader.ReadToEnd();
         }
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.tests/StarwarsFacts.cs b/tests/graphql.tests/StarwarsFacts.cs
index cfb25acce..703c96a03 100644
--- a/tests/graphql.tests/StarwarsFacts.cs
+++ b/tests/graphql.tests/StarwarsFacts.cs
@@ -34,7 +34,7 @@ public async Task Introspect()
         /* Then */
         Assert.NotNull(result.Data);
         Assert.NotEmpty(result?.Data);
-        
+
         Assert.Null(result.Errors);
     }
 
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs b/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
index 0ea48ef9a..bb432f17d 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Arguments.cs
@@ -181,7 +181,7 @@ public void Rule_5421_Required_Arguments_invalid1()
     public void Rule_5421_Required_Arguments_invalid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment missingRequiredArg on Arguments {
                       nonNullBooleanArgField(nonNullBooleanArg: null)
                     }";
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs b/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
index f2f7547f9..81af31e2d 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Directives.cs
@@ -28,7 +28,7 @@ public void Rule_57_DirectivesAreDefined_valid1()
     public void Rule_571_DirectivesAreDefined_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                        findDog(complex: { name: ""Fido"" }) @doesNotExists
                   }
@@ -50,7 +50,7 @@ public void Rule_571_DirectivesAreDefined_invalid1()
     public void Rule_572_DirectivesAreInValidLocations_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"
                 query {
                   field @skip(if: $foo)
@@ -70,7 +70,7 @@ field @skip(if: $foo)
     public void Rule_572_DirectivesAreInValidLocations_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"
                 query @skip(if: $foo) {
                   field
@@ -117,7 +117,7 @@ field @skip(if: $bar) {
     public void Rule_573_DirectivesAreUniquePerLocation_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"query ($foo: Boolean = true, $bar: Boolean = false) {
                       field @skip(if: $foo) @skip(if: $bar)
                     }
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs b/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
index 6c2108ff2..2a15997b9 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Fields.cs
@@ -9,7 +9,7 @@ public partial class ValidatorFacts
     public void Rule_561_ValuesOfCorrectType_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment goodBooleanArg on Arguments {
                       booleanArgField(booleanArg: true)
                     }
@@ -37,7 +37,7 @@ query goodComplexDefaultValue($search: ComplexInput = { name: ""Fido"" }) {
     public void Rule_561_ValuesOfCorrectType_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment stringIntoInt on Arguments {
                       intArgField(intArg: ""123"")
                     }";
@@ -58,7 +58,7 @@ public void Rule_561_ValuesOfCorrectType_invalid1()
     public void Rule_561_ValuesOfCorrectType_invalid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"query badComplexValue {
                       findDog(complex: { name: 123 })
                     }";
@@ -79,7 +79,7 @@ public void Rule_561_ValuesOfCorrectType_invalid2()
     public void Rule_562_InputObjectFieldNames_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                       findDog(complex: { name: ""Fido"" })
                     }
@@ -120,7 +120,7 @@ public void Rule_562_InputObjectFieldNames_invalid1()
     public void Rule_563_InputObjectFieldUniqueness_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                       field(arg: { field: true, field: false })
                     }
@@ -142,7 +142,7 @@ public void Rule_563_InputObjectFieldUniqueness_invalid1()
     public void Rule_564_InputObjectRequiredFields_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                        findDog(complex: { owner: ""Fido"" })
                   }
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs b/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
index ec744378b..665accb23 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.Fragments.cs
@@ -40,7 +40,7 @@ fragment fragmentTwo on Dog {
     public void Rule_5511_Fragment_Name_Uniqueness_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                       dog {
                         ...fragmentOne
@@ -73,7 +73,7 @@ fragment fragmentOne on Dog {
     public void Rule_5512_Fragment_Spread_Type_Existence_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment correctType on Dog {
                         name
                     }
@@ -104,7 +104,7 @@ ... @include(if: true) {
     public void Rule_5512_Fragment_Spread_Type_Existence_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment notOnExistingType on NotInSchema {
                       name
                     }";
@@ -125,7 +125,7 @@ public void Rule_5512_Fragment_Spread_Type_Existence_invalid1()
     public void Rule_5512_Fragment_Spread_Type_Existence_invalid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment inlineNotExistingType on Dog {
                       ... on NotInSchema {
                         name
@@ -148,7 +148,7 @@ ... on NotInSchema {
     public void Rule_5513_FragmentsOnCompositeTypes_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment fragOnObject on Dog {
                       name
                     }
@@ -177,7 +177,7 @@ ... on Dog {
     public void Rule_5513_FragmentsOnCompositeTypes_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment fragOnScalar on Int {
                       something
                     }";
@@ -198,7 +198,7 @@ public void Rule_5513_FragmentsOnCompositeTypes_invalid1()
     public void Rule_5513_FragmentsOnCompositeTypes_invalid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment inlineFragOnScalar on Dog {
                       ... on Boolean {
                         somethingElse
@@ -221,7 +221,7 @@ ... on Boolean {
     public void Rule_5514_FragmentsMustBeUsed_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment nameFragment on Dog {
                       name
                     }
@@ -245,7 +245,7 @@ public void Rule_5514_FragmentsMustBeUsed_valid1()
     public void Rule_5514_FragmentsMustBeUsed_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment nameFragment on Dog {
                       name
                     }
@@ -272,7 +272,7 @@ public void Rule_5514_FragmentsMustBeUsed_invalid1()
     public void Rule_5521_FragmentSpreadTargetDefined_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"
                 {
                   dog {
@@ -297,7 +297,7 @@ public void Rule_5521_FragmentSpreadTargetDefined_invalid1()
     public void Rule_5521_FragmentSpreadTargetDefined_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"
                 {
                     dog   {
@@ -323,7 +323,7 @@ fragment nameFragment on Dog {
     public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                       dog {
                         ...nameFragment
@@ -356,7 +356,7 @@ fragment barkVolumeFragment on Dog {
     public void Rule_5522_FragmentSpreadsMustNotFormCycles_invalid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"{
                       dog {
                         ...dogFragment
@@ -393,7 +393,7 @@ fragment ownerFragment on Dog {
     public void Rule_5523_FragmentSpreadIsPossible_in_scope_valid()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment dogFragment on Dog {
                       ... on Dog {
                         barkVolume
@@ -436,7 +436,7 @@ ... on Cat {
     public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment petNameFragment on Pet {
                       name
                     }
@@ -459,7 +459,7 @@ fragment interfaceWithinObjectFragment on Dog {
     public void Rule_5523_FragmentSpreadIsPossible_in_abstract_scope_valid2()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment catOrDogNameFragment on CatOrDog {
                       ... on Cat {
                         meowVolume
@@ -484,7 +484,7 @@ fragment unionWithObjectFragment on Dog {
     public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_valid1()
     {
         /* Given */
-        var document = 
+        var document =
             @"fragment unionWithInterface on Pet {
                       ...dogOrHumanFragment
                     }
@@ -509,7 +509,7 @@ ... on Dog {
     public void Rule_5523_FragmentSpreadIsPossible_abstract_in_abstract_scope_invalid()
     {
         /* Given */
-        var document = 
+        var document =
             @"
             fragment nonIntersectingInterfaces on Pet {
                 ...sentientFragment
@@ -535,7 +535,7 @@ fragment sentientFragment on Sentient {
     public void Rule_5523_FragmentSpreadIsPossible_Interface_in_interface_scope_valid()
     {
         /* Given */
-        var document = 
+        var document =
             @"
             fragment interfaceWithInterface on Node {
               ...resourceFragment
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs b/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs
index 7232cf22f..ca2e04fde 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.ValidatorFacts.Selections.cs
@@ -210,7 +210,7 @@ fragment mergeIdenticalFieldsWithIdenticalValues on Dog {
         var result = Validate(
             document,
             ExecutionRules.R532FieldSelectionMerging(),
-            new Dictionary<string, object>()
+            new Dictionary<string, object>
             {
                 ["dogCommand"] = "SIT"
             });
@@ -310,7 +310,7 @@ fragment differingArgs on Dog {
         var result = Validate(
             document,
             ExecutionRules.R532FieldSelectionMerging(),
-            new Dictionary<string, object>()
+            new Dictionary<string, object>
             {
                 ["dogCommand"] = "HEEL",
                 ["varOne"] = "SIT",
diff --git a/tests/graphql.tests/Validation/ValidatorFacts.cs b/tests/graphql.tests/Validation/ValidatorFacts.cs
index 2be017f36..c4289e976 100644
--- a/tests/graphql.tests/Validation/ValidatorFacts.cs
+++ b/tests/graphql.tests/Validation/ValidatorFacts.cs
@@ -1,19 +1,18 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.Validation;
 using Xunit;
 
-namespace Tanka.GraphQL.Tests.Validation
+namespace Tanka.GraphQL.Tests.Validation;
+
+public partial class ValidatorFacts
 {
-    public partial class ValidatorFacts
+    public ValidatorFacts()
     {
-        public ValidatorFacts()
-        {
-            var sdl =
-                @"
+        var sdl =
+            @"
                 schema {
                     query: Query
                     subscription: Subscription
@@ -107,62 +106,47 @@ interface Resource implements Node {
             }
                 ";
 
-            Schema = new SchemaBuilder()
-                .Add(sdl)
-                .Build(new SchemaBuildOptions()).Result;
-        }
-
-        public ISchema Schema { get; }
-
-        private ValidationResult Validate(
-            ExecutableDocument document,
-            CombineRule rule,
-            Dictionary<string, object> variables = null)
-        {
-            if (document == null) throw new ArgumentNullException(nameof(document));
-            if (rule == null) throw new ArgumentNullException(nameof(rule));
-
-            return Validator.Validate(           
-                new[] {rule},
-                Schema,
-                document,
-                variables);
-        }
-
-        [Fact(Skip = "Not required by new language module")]
-        public void Rule_511_Executable_Definitions()
-        {
-            /* Given */
-            /*var document = Parser.ParseDocument(
-                @"query getDogName {
-                  dog {
-                    name
-                    color
-                  }
-                }
+        Schema = new SchemaBuilder()
+            .Add(sdl)
+            .Build(new SchemaBuildOptions()).Result;
+    }
+
+    public ISchema Schema { get; }
+
+    [Fact(Skip = "Not required by new language module")]
+    public void Rule_511_Executable_Definitions()
+    {
+        /* Given */
+        /*var document = Parser.ParseDocument(
+            @"query getDogName {
+              dog {
+                name
+                color
+              }
+            }
+
+            extend type Dog {
+              color: String
+            }");*/
+
+        /* When */
+        /*var result = Validate(
+            document,
+            ExecutionRules.R511ExecutableDefinitions());*/
+
+        /* Then */
+        /*Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R511ExecutableDefinitions);*/
+    }
 
-                extend type Dog {
-                  color: String
-                }");*/
-
-            /* When */
-            /*var result = Validate(
-                document,
-                ExecutionRules.R511ExecutableDefinitions());*/
-
-            /* Then */
-            /*Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R511ExecutableDefinitions);*/
-        }
-
-        [Fact]
-        public void Rule_5211_Operation_Name_Uniqueness_valid()
-        {
-            /* Given */
-            var document = 
-                @"query getDogName {
+    [Fact]
+    public void Rule_5211_Operation_Name_Uniqueness_valid()
+    {
+        /* Given */
+        var document =
+            @"query getDogName {
                       dog {
                         name
                       }
@@ -176,21 +160,21 @@ query getOwnerName {
                       }
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5211OperationNameUniqueness());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5211_Operation_Name_Uniqueness_invalid()
-        {
-            /* Given */
-            var document = 
-                @"query getName {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5211OperationNameUniqueness());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5211_Operation_Name_Uniqueness_invalid()
+    {
+        /* Given */
+        var document =
+            @"query getName {
                       dog {
                         name
                       }
@@ -204,44 +188,44 @@ query getName {
                       }
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5211OperationNameUniqueness());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5211OperationNameUniqueness);
-        }
-
-        [Fact]
-        public void Rule_5221_Lone_Anonymous_Operation_valid()
-        {
-            /* Given */
-            var document = 
-                @"{
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5211OperationNameUniqueness());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5211OperationNameUniqueness);
+    }
+
+    [Fact]
+    public void Rule_5221_Lone_Anonymous_Operation_valid()
+    {
+        /* Given */
+        var document =
+            @"{
                   dog {
                     name
                   }
                 }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5221LoneAnonymousOperation());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5221_Lone_Anonymous_Operation_invalid()
-        {
-            /* Given */
-            var document = 
-                @"{
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5221LoneAnonymousOperation());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5221_Lone_Anonymous_Operation_invalid()
+    {
+        /* Given */
+        var document =
+            @"{
                   dog {
                     name
                   }
@@ -255,45 +239,45 @@ query getName {
                   }
                 }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5221LoneAnonymousOperation());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5221LoneAnonymousOperation);
-        }
-
-        [Fact]
-        public void Rule_5231_Single_root_field_valid()
-        {
-            /* Given */
-            var document = 
-                @"subscription sub {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5221LoneAnonymousOperation());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5221LoneAnonymousOperation);
+    }
+
+    [Fact]
+    public void Rule_5231_Single_root_field_valid()
+    {
+        /* Given */
+        var document =
+            @"subscription sub {
                       newMessage {
                         body
                         sender
                       }
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5221LoneAnonymousOperation());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5231_Single_root_field_valid_with_fragment()
-        {
-            /* Given */
-            var document = 
-                @"subscription sub {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5221LoneAnonymousOperation());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5231_Single_root_field_valid_with_fragment()
+    {
+        /* Given */
+        var document =
+            @"subscription sub {
                       ...newMessageFields
                     }
 
@@ -304,21 +288,21 @@ fragment newMessageFields on Subscription {
                       }
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5231SingleRootField());
-
-            /* Then */
-            Assert.True(result.IsValid);
-        }
-
-        [Fact]
-        public void Rule_5231_Single_root_field_invalid()
-        {
-            /* Given */
-            var document = 
-                @"subscription sub {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5231SingleRootField());
+
+        /* Then */
+        Assert.True(result.IsValid);
+    }
+
+    [Fact]
+    public void Rule_5231_Single_root_field_invalid()
+    {
+        /* Given */
+        var document =
+            @"subscription sub {
                       newMessage {
                         body
                         sender
@@ -326,24 +310,24 @@ public void Rule_5231_Single_root_field_invalid()
                       disallowedSecondRootField
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5231SingleRootField());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5231SingleRootField);
-        }
-
-        [Fact]
-        public void Rule_5231_Single_root_field_invalid_with_fragment()
-        {
-            /* Given */
-            var document = 
-                @"subscription sub {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5231SingleRootField());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5231SingleRootField);
+    }
+
+    [Fact]
+    public void Rule_5231_Single_root_field_invalid_with_fragment()
+    {
+        /* Given */
+        var document =
+            @"subscription sub {
                       ...multipleSubscriptions
                     }
 
@@ -355,24 +339,24 @@ fragment multipleSubscriptions on Subscription {
                       disallowedSecondRootField
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5231SingleRootField());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5231SingleRootField);
-        }
-
-        [Fact]
-        public void Rule_5231_Single_root_field_invalid_with_typename()
-        {
-            /* Given */
-            var document = 
-                @"subscription sub {
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5231SingleRootField());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5231SingleRootField);
+    }
+
+    [Fact]
+    public void Rule_5231_Single_root_field_invalid_with_typename()
+    {
+        /* Given */
+        var document =
+            @"subscription sub {
                       newMessage {
                         body
                         sender
@@ -380,16 +364,30 @@ public void Rule_5231_Single_root_field_invalid_with_typename()
                       __typename
                     }";
 
-            /* When */
-            var result = Validate(
-                document,
-                ExecutionRules.R5231SingleRootField());
-
-            /* Then */
-            Assert.False(result.IsValid);
-            Assert.Single(
-                result.Errors,
-                error => error.Code == ValidationErrorCodes.R5231SingleRootField);
-        }
+        /* When */
+        var result = Validate(
+            document,
+            ExecutionRules.R5231SingleRootField());
+
+        /* Then */
+        Assert.False(result.IsValid);
+        Assert.Single(
+            result.Errors,
+            error => error.Code == ValidationErrorCodes.R5231SingleRootField);
+    }
+
+    private ValidationResult Validate(
+        ExecutableDocument document,
+        CombineRule rule,
+        Dictionary<string, object> variables = null)
+    {
+        if (document == null) throw new ArgumentNullException(nameof(document));
+        if (rule == null) throw new ArgumentNullException(nameof(rule));
+
+        return Validator.Validate(
+            new[] { rule },
+            Schema,
+            document,
+            variables);
     }
 }
\ No newline at end of file
diff --git a/tutorials/graphql.tutorials.getting-started/GettingStarted.cs b/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
index 37c3ce890..46aa94048 100644
--- a/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
+++ b/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
@@ -2,77 +2,65 @@
 using System.Collections.Generic;
 using System.Text;
 using System.Threading.Tasks;
-
 using Tanka.GraphQL.Directives;
 using Tanka.GraphQL.Language.Nodes;
-using Tanka.GraphQL.ValueResolution;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.TypeSystem.ValueSerialization;
+using Tanka.GraphQL.ValueResolution;
 using Xunit;
 
-namespace Tanka.GraphQL.Tutorials.GettingStarted
+namespace Tanka.GraphQL.Tutorials.GettingStarted;
+
+public class GettingStarted
 {
-    public class GettingStarted
+    [Fact]
+    public async Task Part1_CreateSchema()
     {
-        [Fact]
-        public void Part1_CreateSchema()
-        {
-            // 1. Create builder
-            var builder = new SchemaBuilder();
+        // 1. Create builder
+        var builder = new SchemaBuilder();
 
-            // 2. Create Query type from SDL by defining a type with 
-            // name Query. This is by convention.
-            builder.Sdl(@"
+        // 2. Create Query type from SDL by defining a type with 
+        // name Query. This is by convention.
+        builder.Add(@"
                 type Query {
                     name: String
                 }
                 ");
 
-            // 3. Build schema
-            var schema = builder.Build();
+        // 3. Build schema
+        var schema = await builder.Build(new SchemaBuildOptions());
 
-            // Assert that created schema matches the inputs
-            // note: By convention the name on the Query root type is Query
-            Assert.Equal("Query", schema.Query.Name);
+        // Assert that created schema matches the inputs
+        // note: By convention the name on the Query root type is Query
+        Assert.Equal("Query", schema.Query.Name);
 
-            // Schema has methods for querying the fields of the type.
-            // In this case assertion is done to check that "name" field exists
-            // for Query type. Fields are key value pairs where key is the name
-            // of the field and value is the actual field.
-            Assert.Single(
-                schema.GetFields(schema.Query.Name),
-                fieldDef => fieldDef.Key == "name");
-        }
+        // Schema has methods for querying the fields of the type.
+        // In this case assertion is done to check that "name" field exists
+        // for Query type. Fields are key value pairs where key is the name
+        // of the field and value is the actual field.
+        Assert.Single(
+            schema.GetFields(schema.Query.Name),
+            fieldDef => fieldDef.Key == "name");
+    }
 
-        [Fact]
-        public async Task Part2_BindResolvers_Manual()
-        {
-            // Create builder and load sdl
-            var builder = new SchemaBuilder()
-                .Sdl(@"
+    [Fact]
+    public async Task Part2_BindResolvers_Manual()
+    {
+        // Create builder and load sdl
+        var builder = new SchemaBuilder()
+            .Add(@"
                 type Query {
                     name: String
                 }
                 ");
 
-            // Get query type
-            builder.GetQuery(out var query);
-
-            // Connections are used to defined fields and resolvers.
-            // Connections method can be called multiple times.
-            builder.Connections(connections =>
+        // Build schema with the resolver
+        var schema = await builder.Build(new SchemaBuildOptions
+        {
+            Resolvers = new ResolversMap
             {
-                // Get or add resolver builder for Query.name field
-                var nameResolverBuilder = connections
-                    .GetOrAddResolver(query, "name");
-
-                // "Run" allows us to define an end of the resolver 
-                // chain. You can add "middlewares" using "Use".
-                nameResolverBuilder
-                    .Run(context =>
+                {
+                    "Query", "name", context =>
                     {
                         // Create result using Test as the value
                         var result = Resolve.As("Test");
@@ -81,143 +69,60 @@ type Query {
                         // ValueTask result is used to reduce 
                         // allocations
                         return new ValueTask<IResolverResult>(result);
-                    });
-            });
-
-            // Build schema with the resolver
-            var schema = builder.Build();
-
-            // Get resolver for Query.name field
-            var nameResolver = schema.GetResolver(schema.Query.Name, "name");
-
-            // Execute the resolver. This is normally handled by the executor.
-            var nameValue = await nameResolver(null);
-            Assert.Equal("Test", nameValue.Value);
-        }
-
-        [Fact]
-        public async Task Part2_BindResolvers_SchemaBuilder_Maps()
-        {
-            // Create builder and load sdl
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                type Query {
-                    name: String
-                }
-                ");
-
-            // Get query type
-            builder.GetQuery(out var query);
-
-            // Bind resolvers from ObjectTypeMap
-            builder.UseResolversAndSubscribers(
-                new ObjectTypeMap
-                {
-                    {
-                        query.Name, new FieldResolversMap
-                        {
-                            {
-                                "name", context =>
-                                {
-                                    var result = Resolve.As("Test");
-                                    return new ValueTask<IResolverResult>(result);
-                                }
-                            }
-                        }
                     }
-                });
-
-            // Build schema
-            var schema = builder.Build();
-
-            // Get resolver for Query.name field
-            var nameResolver = schema.GetResolver(schema.Query.Name, "name");
-
-            // Execute the resolver. This is normally handled by the executor.
-            var nameValue = await nameResolver(null);
-            Assert.Equal("Test", nameValue.Value);
-        }
-
-        [Fact]
-        public async Task Part2_BindResolvers_SchemaTools_Maps()
-        {
-            // Create builder and load sdl
-            var builder = new SchemaBuilder()
-                .Sdl(@"
-                type Query {
-                    name: String
                 }
-                ");
-
-            // Get query type
-            builder.GetQuery(out var query);
-
-            // Build schema by binding resolvers from ObjectTypeMap
-            var schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                new ObjectTypeMap
-                {
-                    {
-                        query.Name, new FieldResolversMap
-                        {
-                            {
-                                "name", context =>
-                                {
-                                    var result = Resolve.As("Test");
-                                    return new ValueTask<IResolverResult>(result);
-                                }
-                            }
-                        }
-                    }
-                });
-
+            }
+        });
 
-            // Get resolver for Query.name field
-            var nameResolver = schema.GetResolver(schema.Query.Name, "name");
+        // Get resolver for Query.name field
+        var nameResolver = schema.GetResolver(schema.Query.Name, "name")!;
 
-            // Execute the resolver. This is normally handled by the executor.
-            var nameValue = await nameResolver(null);
-            Assert.Equal("Test", nameValue.Value);
-        }
+        // Execute the resolver. This is normally handled by the executor.
+        var nameValue = await nameResolver(null);
+        Assert.Equal("Test", nameValue.Value);
+    }
 
-        [Fact]
-        public async Task Part3_ApplyDirectives_on_Object_fields()
-        {
-            // Create builder, load sdl with our types
-            // and bind the resolvers
-            var builder = new SchemaBuilder()
-                .Sdl(@"
+    [Fact]
+    public async Task Part3_ApplyDirectives_on_Object_fields()
+    {
+        // Create builder, load sdl with our types
+        // and bind the resolvers
+        var builder = new SchemaBuilder()
+            .Add(@"
                     directive @duplicate on FIELD_DEFINITION
 
                     type Query {
                         name: String @duplicate                
                     }
-                    ")
-                .GetQuery(out var query)
-                .UseResolversAndSubscribers(
-                    new ObjectTypeMap
+                    ");
+
+        // todo: This is not currently working and resolvers are being modified but
+        // those modified resolvers are not taken into use by anything
+        // build schema with resolvers and directives
+        var schema = await builder.Build(new SchemaBuildOptions
+        {
+            Resolvers = new ResolversMap
+            {
+                {
+                    "Query", new FieldResolversMap
                     {
                         {
-                            query.Name, new FieldResolversMap
+                            "name", context =>
                             {
-                                {
-                                    "name", context =>
-                                    {
-                                        var result = Resolve.As("Test");
-                                        return new ValueTask<IResolverResult>(result);
-                                    }
-                                }
+                                var result = Resolve.As("Test");
+                                return new ValueTask<IResolverResult>(result);
                             }
                         }
-                    });
-
-            // Apply directives to schema by providing a visitor which
-            // will transform the fields with the directive into new
-            // fields with the directive logic. Note that the original
-            // field will be replaced.
-            builder.ApplyDirectives(new Dictionary<string, CreateDirectiveVisitor>()
+                    }
+                }
+            },
+            DirectiveVisitorFactories = new Dictionary<string, CreateDirectiveVisitor>
             {
-                ["duplicate"] = _ => new DirectiveVisitor()
+                // Apply directives to schema by providing a visitor which
+                // will transform the fields with the directive into new
+                // fields with the directive logic. Note that the original
+                // field will be replaced.
+                ["duplicate"] = _ => new DirectiveVisitor
                 {
                     // Visitor will visit field definitions
                     FieldDefinition = (directive, fieldDefinition) =>
@@ -226,40 +131,38 @@ type Query {
                         // new resolver. New resolver will execute the 
                         // original resolver, duplicate value and return it
                         return fieldDefinition
-                            .WithResolver(resolver => 
+                            .WithResolver(resolver =>
                                 resolver.Use(async (context, next) =>
-                        {
-                            // We need to first call the original resolver to 
-                            // get the initial value
-                            var result = await next(context);
+                                {
+                                    // We need to first call the original resolver to 
+                                    // get the initial value
+                                    var result = await next(context);
 
-                            // for simplicity we expect value to be string
-                            var initialValue = result.Value.ToString();
+                                    // for simplicity we expect value to be string
+                                    var initialValue = result.Value.ToString();
 
-                            // return new value
-                            return Resolve.As(initialValue + initialValue);
-                        }).Run(fieldDefinition.Resolver));
+                                    // return new value
+                                    return Resolve.As(initialValue + initialValue);
+                                }).Run(fieldDefinition.Resolver));
                     }
                 }
-            });
+            }
+        });
 
-            // Build schema
-            var schema = builder.Build();
+        // Get resolver for Query.name field
+        var nameResolver = schema.GetResolver(schema.Query.Name, "name")!;
 
-            // Get resolver for Query.name field
-            var nameResolver = schema.GetResolver(schema.Query.Name, "name");
-
-            // Execute the resolver. This is normally handled by the executor.
-            var nameValue = await nameResolver(null);
-            Assert.Equal("TestTest", nameValue.Value);
-        }
+        // Execute the resolver. This is normally handled by the executor.
+        var nameValue = await nameResolver(null);
+        Assert.Equal("TestTest", nameValue.Value);
+    }
 
-        [Fact]
-        public async Task Part6_Custom_Scalar()
-        {
-            // Create builder and load sdl
-            var builder = new SchemaBuilder()
-                .Sdl(@"
+    [Fact]
+    public async Task Part6_Custom_Scalar()
+    {
+        // Create builder and load sdl
+        var builder = new SchemaBuilder()
+            .Add(@"
 
                 # Custom scalar defined in the SDL
                 scalar Uri
@@ -269,57 +172,51 @@ type Query {
                 }
                 ");
 
-            // Get query type
-            builder.GetQuery(out var query);
-
-            // Build schema by binding resolvers from ObjectTypeMap
-            var schema = SchemaTools.MakeExecutableSchema(
-                builder,
-                new ObjectTypeMap
+        // Build schema by binding resolvers from ObjectTypeMap
+        var schema = await builder.Build(new SchemaBuildOptions
+        {
+            Resolvers = new ResolversMap
+            {
                 {
+                    "Query", new FieldResolversMap
                     {
-                        query.Name, new FieldResolversMap
                         {
-                            {
-                                "url", context => ResolveSync.As(new Uri("https://localhost/"))
-                            }
+                            "url", context => ResolveSync.As(new Uri("https://localhost/"))
                         }
                     }
-                },
-                converters: new Dictionary<string, IValueConverter>()
-                {
-                    // this will add value converter for Uri scalar type
-                    ["Uri"] = new InlineConverter(
-                        serialize: value =>
-                        {
-                            var uri = (Uri) value;
-                            return uri.ToString();
-                        },
-                        parseValue: value => new Uri(value.ToString()),
-                        parseLiteral: value =>
-                        {
-                            if (value.Kind == NodeKind.StringValue)
-                            {
-                                return new Uri((StringValue)value);
-                            }
+                }
+            },
+            ValueConverters = new Dictionary<string, IValueConverter>
+            {
+                // this will add value converter for Uri scalar type
+                ["Uri"] = new InlineConverter(
+                    value =>
+                    {
+                        var uri = (Uri)value;
+                        return uri.ToString();
+                    },
+                    parseValue: value => new Uri(value.ToString()),
+                    parseLiteral: value =>
+                    {
+                        if (value.Kind == NodeKind.StringValue) return new Uri((StringValue)value);
 
-                            throw new ArgumentOutOfRangeException(
-                                nameof(value),
-                                $"Cannot coerce Uri from value kind: '{value.Kind}'");
-                        },
-                        serializeLiteral: value => new StringValue(Encoding.UTF8.GetBytes(value.ToString())))
-                });
+                        throw new ArgumentOutOfRangeException(
+                            nameof(value),
+                            $"Cannot coerce Uri from value kind: '{value.Kind}'");
+                    },
+                    serializeLiteral: value => new StringValue(Encoding.UTF8.GetBytes(value.ToString())))
+            }
+        });
 
 
-            // execute query
-            var result = await Executor.ExecuteAsync(new ExecutionOptions()
-            {
-                Schema = schema,
-                Document = Parser.ParseDocument(@"{ url }")
-            });
+        // execute query
+        var result = await Executor.ExecuteAsync(new ExecutionOptions
+        {
+            Schema = schema,
+            Document = @"{ url }"
+        });
 
-            var url = result.Data["url"];
-            Assert.Equal("https://localhost/", url.ToString());
-        }
+        var url = result.Data["url"];
+        Assert.Equal("https://localhost/", url.ToString());
     }
 }
\ No newline at end of file
diff --git a/tutorials/graphql.tutorials.getting-started/GettingStartedServer.cs b/tutorials/graphql.tutorials.getting-started/GettingStartedServer.cs
index 8999ed857..ca7c754fb 100644
--- a/tutorials/graphql.tutorials.getting-started/GettingStartedServer.cs
+++ b/tutorials/graphql.tutorials.getting-started/GettingStartedServer.cs
@@ -3,122 +3,115 @@
 using Microsoft.AspNetCore.WebSockets;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.DependencyInjection;
-using Tanka.GraphQL.SchemaBuilding;
-using Tanka.GraphQL.SDL;
 using Tanka.GraphQL.Server;
-using Tanka.GraphQL.Tools;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
 
-namespace Tanka.GraphQL.Tutorials.GettingStarted
+namespace Tanka.GraphQL.Tutorials.GettingStarted;
+
+public class Startup
 {
-    public class Startup
+    public void ConfigureServices(IServiceCollection services)
     {
-        public void ConfigureServices(IServiceCollection services)
-        {
-            // We will use memory cache to manage the cached
-            // schema instance
-            services.AddMemoryCache();
-
-            // This will manage the schema
-            services.AddSingleton<SchemaCache>();
+        // We will use memory cache to manage the cached
+        // schema instance
+        services.AddMemoryCache();
 
-            AddTanka(services);
+        // This will manage the schema
+        services.AddSingleton<SchemaCache>();
 
-            AddSignalRServer(services);
+        AddTanka(services);
 
-            AddWebSocketsServer(services);
+        AddSignalRServer(services);
 
-            AddExecutionScopedService(services);
-        }
+        AddWebSocketsServer(services);
 
-        public void Configure(IApplicationBuilder app)
-        {
-            UseSignalRServer(app);
+        AddExecutionScopedService(services);
+    }
 
-            UseWebSocketsServer(app);
-        }
+    public void Configure(IApplicationBuilder app)
+    {
+        UseSignalRServer(app);
 
-        private void AddExecutionScopedService(IServiceCollection services)
-        {
-            services.AddScoped<ResolverController>();
-        }
+        UseWebSocketsServer(app);
+    }
 
-        private void AddWebSocketsServer(IServiceCollection services)
-        {
-            // Configure websockets
-            services.AddWebSockets(options => { options.AllowedOrigins.Add("https://localhost:5000"); });
+    private void AddExecutionScopedService(IServiceCollection services)
+    {
+        services.AddScoped<ResolverController>();
+    }
 
-            // Add Tanka GraphQL-WS server
-            services.AddTankaGraphQL()
-                .ConfigureWebSockets();
-        }
+    private void AddWebSocketsServer(IServiceCollection services)
+    {
+        // Configure websockets
+        services.AddWebSockets(options => { options.AllowedOrigins.Add("https://localhost:5000"); });
 
-        private void UseWebSocketsServer(IApplicationBuilder app)
-        {
-            // Add Websockets middleware
-            app.UseWebSockets();
+        // Add Tanka GraphQL-WS server
+        services.AddTankaGraphQL()
+            .ConfigureWebSockets();
+    }
 
-            // Add Tanka GraphQL-WS middleware
-            app.UseEndpoints(endpoints => endpoints.MapTankaGraphQLWebSockets("/graphql/ws"));
-        }
+    private void UseWebSocketsServer(IApplicationBuilder app)
+    {
+        // Add Websockets middleware
+        app.UseWebSockets();
 
-        private static void UseSignalRServer(IApplicationBuilder app)
-        {
-            // add SignalR
-            app.UseEndpoints(routes => { routes.MapTankaGraphQLSignalR("/graphql/hub"); });
-        }
+        // Add Tanka GraphQL-WS middleware
+        app.UseEndpoints(endpoints => endpoints.MapTankaGraphQLWebSockets("/graphql/ws"));
+    }
 
-        private static void AddTanka(IServiceCollection services)
-        {
-            // Configure schema options
-            services.AddTankaGraphQL()
-                .ConfigureSchema<SchemaCache>(async cache => await cache.GetOrAdd());
-        }
+    private static void UseSignalRServer(IApplicationBuilder app)
+    {
+        // add SignalR
+        app.UseEndpoints(routes => { routes.MapTankaGraphQLSignalR("/graphql/hub"); });
+    }
 
-        private static void AddSignalRServer(IServiceCollection services)
-        {
-            // Configure Tanka server
-            services.AddSignalR()
-                .AddTankaGraphQL();
-        }
+    private static void AddTanka(IServiceCollection services)
+    {
+        // Configure schema options
+        services.AddTankaGraphQL()
+            .ConfigureSchema<SchemaCache>(async cache => await cache.GetOrAdd());
     }
 
-    public class ResolverController
+    private static void AddSignalRServer(IServiceCollection services)
     {
-        public ValueTask<IResolverResult> QueryLastName()
-        {
-            return ResolveSync.As("GraphQL");
-        }
+        // Configure Tanka server
+        services.AddSignalR()
+            .AddTankaGraphQL();
     }
+}
 
-    public class SchemaCache
+public class ResolverController
+{
+    public ValueTask<IResolverResult> QueryLastName()
     {
-        private readonly IMemoryCache _cache;
+        return ResolveSync.As("GraphQL");
+    }
+}
 
-        public SchemaCache(
-            IMemoryCache cache)
-        {
-            _cache = cache;
-        }
+public class SchemaCache
+{
+    private readonly IMemoryCache _cache;
 
-        public Task<ISchema> GetOrAdd()
-        {
-            return _cache.GetOrCreateAsync(
-                "Schema",
-                entry => Create());
-        }
+    public SchemaCache(
+        IMemoryCache cache)
+    {
+        _cache = cache;
+    }
 
-        private async Task<ISchema> Create()
-        {
-            // Do some async work to build the schema. For example
-            // load SDL from file
-            await Task.Delay(0);
-
-            // Build simple schema from SDL string
-            var builder = new SchemaBuilder()
-                .Sdl(
-                    @"
+    public Task<ISchema> GetOrAdd()
+    {
+        return _cache.GetOrCreateAsync(
+            "Schema",
+            entry => Create());
+    }
+
+    private async Task<ISchema> Create()
+    {
+        // Build simple schema from SDL string
+        var builder = new SchemaBuilder()
+            .Add(
+                @"
                     type Query {
                         firstName: String!
                         lastName: String!
@@ -129,25 +122,21 @@ type Query {
                     }
                     ");
 
-            // Bind resolvers and build
-            return SchemaTools
-                .MakeExecutableSchemaWithIntrospection(
-                    builder,
-                    new ObjectTypeMap
-                    {
-                        ["Query"] = new FieldResolversMap
-                        {
-                            {"firstName", context => ResolveSync.As("Tanka")},
-                            {"lastName", UseService()}
-                        }
-                    });
-        }
-
-        private Resolver UseService()
+        // Bind resolvers and build
+        return await builder.Build(new ResolversMap
         {
-            return context => context
-                .Use<ResolverController>()
-                .QueryLastName();
-        }
+            ["Query"] = new()
+            {
+                { "firstName", context => ResolveSync.As("Tanka") },
+                { "lastName", UseService() }
+            }
+        });
+    }
+
+    private Resolver UseService()
+    {
+        return context => context
+            .Use<ResolverController>()
+            .QueryLastName();
     }
 }
\ No newline at end of file

From 2d1bb7211a8675b9267d8675e9852ba61edd9086 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 20:05:09 +0200
Subject: [PATCH 12/26] Remove generator tests

---
 benchmarks/graphql.benchmarks/Utils.cs        |  17 +-
 .../Extensions/Analysis/Schema.graphql        |   7 -
 .../Analysis/UseCostAnalysisFacts.cs          |   6 -
 .../GeneratedInputObjectFacts.cs              |  38 ----
 ...GeneratedObjectControllerArgumentsFacts.cs | 187 ------------------
 ...neratedObjectControllerNullabilityFacts.cs | 103 ----------
 .../GeneratedSubscriptionControllerFacts.cs   |  94 ---------
 .../GraphQLEmbeddedAsResourceFacts.cs         |  30 ---
 .../Model/Schema.graphql                      |  30 ---
 .../InputObjectType/InputObjectTypeFacts.cs   |  10 -
 .../Types/InputObjectType/Schema.graphql      |   4 -
 .../Types/InterfaceType/InterfaceTypeFacts.cs | 151 --------------
 .../Types/InterfaceType/Schema.graphql        |  15 --
 .../Types/ObjectType/ObjectTypeFacts.cs       |  27 ---
 .../Types/ObjectType/Schema.graphql           |   5 -
 .../Types/UnionType/Schema.graphql            |  14 --
 .../Types/UnionType/UnionTypeFacts.cs         | 165 ----------------
 ...graphql.generator.integration.tests.csproj |  53 -----
 18 files changed, 9 insertions(+), 947 deletions(-)
 delete mode 100644 tests/graphql.generator.integration.tests/Extensions/Analysis/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Extensions/Analysis/UseCostAnalysisFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/GeneratedInputObjectFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/GeneratedObjectControllerArgumentsFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/GeneratedObjectControllerNullabilityFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/GeneratedSubscriptionControllerFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/GraphQLEmbeddedAsResourceFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/Model/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Types/InputObjectType/InputObjectTypeFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/Types/InputObjectType/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Types/InterfaceType/InterfaceTypeFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/Types/InterfaceType/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Types/ObjectType/ObjectTypeFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/Types/ObjectType/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Types/UnionType/Schema.graphql
 delete mode 100644 tests/graphql.generator.integration.tests/Types/UnionType/UnionTypeFacts.cs
 delete mode 100644 tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj

diff --git a/benchmarks/graphql.benchmarks/Utils.cs b/benchmarks/graphql.benchmarks/Utils.cs
index 72a59541f..ff9790555 100644
--- a/benchmarks/graphql.benchmarks/Utils.cs
+++ b/benchmarks/graphql.benchmarks/Utils.cs
@@ -1,4 +1,5 @@
 using System.Threading.Tasks;
+using Tanka.GraphQL.Language;
 using Tanka.GraphQL.Language.Nodes;
 using Tanka.GraphQL.TypeSystem;
 using Tanka.GraphQL.ValueResolution;
@@ -11,7 +12,7 @@ public static Task<ISchema> InitializeSchema()
     {
         var events = new SingleValueEventChannel();
         var builder = new SchemaBuilder()
-            .Add(Parser.ParseTypeSystemDocument(
+            .Add(
                 @"
                     type Query {
                         simple: String
@@ -30,7 +31,7 @@ type Subscription {
                         mutation: Mutation
                         subscription: Subscription
                     }
-                    "));
+                    ");
 
         var resolvers = new ResolversMap
         {
@@ -63,25 +64,25 @@ type Subscription {
 
     public static ExecutableDocument InitializeQuery()
     {
-        return Parser.ParseDocument(@"
+        return @"
 {
     simple
-}");
+}";
     }
 
     public static ExecutableDocument InitializeMutation()
     {
-        return Parser.ParseDocument(@"
+        return @"
 mutation {
     simple
-}");
+}";
     }
 
     public static ExecutableDocument InitializeSubscription()
     {
-        return Parser.ParseDocument(@"
+        return @"
 subscription {
     simple
-}");
+}";
     }
 }
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Extensions/Analysis/Schema.graphql b/tests/graphql.generator.integration.tests/Extensions/Analysis/Schema.graphql
deleted file mode 100644
index 38d5ce346..000000000
--- a/tests/graphql.generator.integration.tests/Extensions/Analysis/Schema.graphql
+++ /dev/null
@@ -1,7 +0,0 @@
-"""
-tanka_import from "tanka://cost-analysis"
-"""
-
-type ObjectType {
-	property: Int! @cost(complexity: 1)
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Extensions/Analysis/UseCostAnalysisFacts.cs b/tests/graphql.generator.integration.tests/Extensions/Analysis/UseCostAnalysisFacts.cs
deleted file mode 100644
index 5f278bd1c..000000000
--- a/tests/graphql.generator.integration.tests/Extensions/Analysis/UseCostAnalysisFacts.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace Tanka.GraphQL.Generator.Integration.Tests.Extensions.Analysis
-{
-    public class UseCostAnalysisFacts
-    {
-    }
-}
diff --git a/tests/graphql.generator.integration.tests/GeneratedInputObjectFacts.cs b/tests/graphql.generator.integration.tests/GeneratedInputObjectFacts.cs
deleted file mode 100644
index cb96f3c1f..000000000
--- a/tests/graphql.generator.integration.tests/GeneratedInputObjectFacts.cs
+++ /dev/null
@@ -1,38 +0,0 @@
-using System.Collections.Generic;
-using Tanka.GraphQL.Generator.Integration.Tests.Model;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests
-{
-    public class GeneratedInputObjectFacts
-    {
-        private readonly TestInputObject _sut;
-
-        public GeneratedInputObjectFacts()
-        {
-            _sut = new TestInputObject();
-        }
-
-        [Fact]
-        public void Read()
-        {
-            /* Given */
-            var source = new Dictionary<string, object>()
-            {
-                ["int"] = 123,
-                ["string"] = "123",
-                ["float"] = 123.12,
-                ["boolean"] = true
-            };
-            
-            /* When */
-            _sut.Read(source);
-
-            /* Then */
-            Assert.Equal(123, _sut.Int);
-            Assert.Equal("123", _sut.String);
-            Assert.Equal(123.12, _sut.Float);
-            Assert.Equal(true, _sut.Boolean);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/GeneratedObjectControllerArgumentsFacts.cs b/tests/graphql.generator.integration.tests/GeneratedObjectControllerArgumentsFacts.cs
deleted file mode 100644
index 2df0392a1..000000000
--- a/tests/graphql.generator.integration.tests/GeneratedObjectControllerArgumentsFacts.cs
+++ /dev/null
@@ -1,187 +0,0 @@
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Linq;
-using System.Threading.Tasks;
-using NSubstitute;
-using Tanka.GraphQL.Generator.Integration.Tests.Model;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests
-{
-    public abstract class ArgumentsTestObjectController : ArgumentsTestObjectControllerBase<ArgumentsTestObject>
-    {
-
-    }
-
-    public class GeneratedObjectControllerArgumentsFacts
-    {
-        private readonly ArgumentsTestObjectController _sut;
-
-        public GeneratedObjectControllerArgumentsFacts()
-        {
-            _sut = Substitute.ForPartsOf<ArgumentsTestObjectController>();
-        }
-
-        private IResolverContext CreateContext(
-            object? objectValue
-        )
-        {
-            var context = Substitute.For<IResolverContext>();
-            context.ObjectValue.Returns(objectValue);
-
-            return context;
-        }
-
-        [Fact]
-        public async Task Single_Scalar_Int_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = 1
-            });
-
-            /* When */
-            await _sut.Int(context);
-
-            /* Then */
-            await _sut.Received().Int(objectValue, 1, context);
-        }
-
-        [Fact]
-        public async Task Single_Scalar_Int_Array_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-
-            var argValues = new int?[] {1, 2, 3, 4, 5};
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = argValues
-            });
-
-            /* When */
-            await _sut.ArrayOfInt(context);
-
-            /* Then */
-            await _sut.Received().ArrayOfInt(objectValue, argValues, context);
-        }
-
-        [Fact]
-        public async Task Single_Scalar_String_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = "hello"
-            });
-
-            /* When */
-            await _sut.String(context);
-
-            /* Then */
-            await _sut.Received().String(objectValue, "hello", context);
-        }
-
-        [Fact]
-        public async Task Single_Scalar_Float_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = 1.123
-            });
-
-            /* When */
-            await _sut.Float(context);
-
-            /* Then */
-            await _sut.Received().Float(objectValue, 1.123, context);
-        }
-
-        [Fact]
-        public async Task Single_Scalar_Boolean_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = true
-            });
-
-            /* When */
-            await _sut.Boolean(context);
-
-            /* Then */
-            await _sut.Received().Boolean(objectValue, true, context);
-        }
-
-        [Fact]
-        public async Task Single_InputObject_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = new Dictionary<string, object>()
-                {
-                    ["int"] = 1
-                }
-            });
-
-            /* When */
-            await _sut.Input(context);
-
-            /* Then */
-            await _sut.Received().Input(objectValue, Arg.Is<TestInputObject>(ti => ti.Int == 1), context);
-        }
-
-        [Fact]
-        public async Task Single_InputObject_Array_argument()
-        {
-            /* Given */
-            var objectValue = new ArgumentsTestObject();
-            var context = CreateContext(objectValue);
-
-            var argValues = new Dictionary<string, object>?[]
-            {
-                new Dictionary<string, object>()
-                {
-                    ["int"] = 1
-                },
-                new Dictionary<string, object>()
-                {
-                    ["int"] = 2
-                },
-                new Dictionary<string, object>()
-                {
-                    ["int"] = 3
-                }
-            };
-
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg"] = argValues
-            });
-
-            /* When */
-            await _sut.ArrayOfInputObject(context);
-
-            /* Then */
-            await _sut.Received().ArrayOfInputObject(
-                objectValue, 
-                Arg.Is<IEnumerable<TestInputObject>>(arr => arr.Count() == 3), 
-                context);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/GeneratedObjectControllerNullabilityFacts.cs b/tests/graphql.generator.integration.tests/GeneratedObjectControllerNullabilityFacts.cs
deleted file mode 100644
index 1187ceea7..000000000
--- a/tests/graphql.generator.integration.tests/GeneratedObjectControllerNullabilityFacts.cs
+++ /dev/null
@@ -1,103 +0,0 @@
-using System.Threading.Tasks;
-using NSubstitute;
-using Tanka.GraphQL.Generator.Integration.Tests.Model;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests
-{
-    public class NullabilityTestObjectController : NullabilityTestObjectControllerBase<NullabilityTestObject>
-    {
-    }
-
-    public class GeneratedObjectControllerNullabilityFacts
-    {
-        public GeneratedObjectControllerNullabilityFacts()
-        {
-            _sut = new NullabilityTestObjectController();
-        }
-
-        private readonly NullabilityTestObjectController _sut;
-
-        private IResolverContext CreateContext(object? objectValue)
-        {
-            var context = Substitute.For<IResolverContext>();
-            context.ObjectValue.Returns(objectValue);
-            return context;
-        }
-
-        [Fact]
-        public async Task NonNull_Property_field_with_null_objectValue()
-        {
-            /* Given */
-            var context = CreateContext(null);
-
-            /* When */
-            var result = await _sut.NonNullInt(context);
-
-            /* Then */
-            Assert.Null(result.Value);
-        }
-
-        [Fact]
-        public async Task NonNull_Property_field()
-        {
-            /* Given */
-            var context = CreateContext(new NullabilityTestObject
-            {
-                NonNullInt = 1
-            });
-
-            /* When */
-            var result = await _sut.NonNullInt(context);
-
-            /* Then */
-            Assert.Equal(1, result.Value);
-        }
-
-        [Fact]
-        public async Task Nullable_Property_field_with_null_objectValue()
-        {
-            /* Given */
-            var context = CreateContext(null);
-
-            /* When */
-            var result = await _sut.Int(context);
-
-            /* Then */
-            Assert.Null(result.Value);
-        }
-
-        [Fact]
-        public async Task Nullable_Property_field_with_null()
-        {
-            /* Given */
-            var context = CreateContext(new NullabilityTestObject
-            {
-                Int = null
-            });
-
-            /* When */
-            var result = await _sut.Int(context);
-
-            /* Then */
-            Assert.Null(result.Value);
-        }
-
-        [Fact]
-        public async Task Nullable_Property_field_with_value()
-        {
-            /* Given */
-            var context = CreateContext(new NullabilityTestObject
-            {
-                Int = 1
-            });
-
-            /* When */
-            var result = await _sut.Int(context);
-
-            /* Then */
-            Assert.Equal(1, result.Value);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/GeneratedSubscriptionControllerFacts.cs b/tests/graphql.generator.integration.tests/GeneratedSubscriptionControllerFacts.cs
deleted file mode 100644
index 727efee65..000000000
--- a/tests/graphql.generator.integration.tests/GeneratedSubscriptionControllerFacts.cs
+++ /dev/null
@@ -1,94 +0,0 @@
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
-using NSubstitute;
-using Tanka.GraphQL.Generator.Integration.Tests.Model;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests
-{
-    public class GeneratedSubscriptionControllerFacts
-    {
-        public abstract class SubscriptionController : SubscriptionControllerBase<Subscription>
-        {
-        }
-            
-        private readonly SubscriptionController _sut;
-
-        public GeneratedSubscriptionControllerFacts()
-        {
-            _sut = Substitute.ForPartsOf<SubscriptionController>();
-        }
-
-        private IResolverContext CreateContext(
-            object? objectValue
-        )
-        {
-            var context = Substitute.For<IResolverContext>();
-            context.ObjectValue.Returns(objectValue);
-
-            return context;
-        }
-
-        [Fact]
-        public async Task Subscribe_to_Int_no_args()
-        {
-            /* Given */
-            var context = CreateContext(null);
- 
-            var expected = Substitute.For<ISubscriberResult>();
-            _sut.Int(context, CancellationToken.None)
-                .Returns(expected);
-
-            /* When */
-            var actual = await _sut.Int(context, CancellationToken.None);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public async Task Subscribe_to_Int_one_Int_arg()
-        {
-            /* Given */
-            var context = CreateContext(null);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg1"] = 1
-            });
-
-            var expected = Substitute.For<ISubscriberResult>();
-            _sut.IntWithArgument(context, CancellationToken.None)
-                .Returns(expected);
-
-            /* When */
-            var actual = await _sut.IntWithArgument(context, CancellationToken.None);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-
-        [Fact]
-        public async Task Subscribe_to_Int_one_Int_and_one_String_arg()
-        {
-            /* Given */
-            var context = CreateContext(null);
-            context.Arguments.Returns(new Dictionary<string, object>()
-            {
-                ["arg1"] = 1,
-                ["arg2"] = "string"
-            });
-
-            var expected = Substitute.For<ISubscriberResult>();
-            _sut.IntWithTwoArguments(context, CancellationToken.None)
-                .Returns(expected);
-
-            /* When */
-            var actual = await _sut.IntWithTwoArguments(context, CancellationToken.None);
-
-            /* Then */
-            Assert.Equal(expected, actual);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/GraphQLEmbeddedAsResourceFacts.cs b/tests/graphql.generator.integration.tests/GraphQLEmbeddedAsResourceFacts.cs
deleted file mode 100644
index 9616e04e9..000000000
--- a/tests/graphql.generator.integration.tests/GraphQLEmbeddedAsResourceFacts.cs
+++ /dev/null
@@ -1,30 +0,0 @@
-using System;
-using System.IO;
-using System.Reflection;
-using System.Text;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests
-{
-    public class GraphQLEmbeddedAsResourceFacts
-    {
-        [Fact]
-        public void EmbeddedAsResource()
-        {
-            Assert.NotNull(LoadIdlFromResource());
-        }
-
-        private static string LoadIdlFromResource()
-        {
-            var assembly = Assembly.GetExecutingAssembly();
-            var resourceStream =
-                assembly.GetManifestResourceStream("Tanka.GraphQL.Generator.Integration.Tests.Model.Schema.graphql")
-                ?? throw new InvalidOperationException("Could not load resource");
-
-            using var reader =
-                new StreamReader(resourceStream , Encoding.UTF8);
-
-            return reader.ReadToEnd();
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Model/Schema.graphql b/tests/graphql.generator.integration.tests/Model/Schema.graphql
deleted file mode 100644
index 52696dab7..000000000
--- a/tests/graphql.generator.integration.tests/Model/Schema.graphql
+++ /dev/null
@@ -1,30 +0,0 @@
-type NullabilityTestObject {
-	nonNullInt: Int!
-	int: Int
-}
-
-input TestInputObject {
-	id: ID
-	int: Int
-	string: String
-	float: Float
-	boolean: Boolean
-}
-
-type ArgumentsTestObject {
-	int(arg: Int): Int
-	string(arg: String): String
-	float(arg: Float): Float
-	boolean(arg: Boolean): Boolean
-	input(arg: TestInputObject): Int
-	arrayOfInt(arg: [Int]): [Int]
-	arrayOfInputObject(arg: [TestInputObject]): [Int]
-}
-
-type Subscription {
-	int: Int!
-	intWithArgument(arg1: Int!): Int!
-	intWithTwoArguments(arg1: Int!, arg2: String): Int!
-
-	object: ArgumentsTestObject
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/InputObjectType/InputObjectTypeFacts.cs b/tests/graphql.generator.integration.tests/Types/InputObjectType/InputObjectTypeFacts.cs
deleted file mode 100644
index 15e02368a..000000000
--- a/tests/graphql.generator.integration.tests/Types/InputObjectType/InputObjectTypeFacts.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace Tanka.GraphQL.Generator.Integration.Tests.Types.InputObjectType
-{
-    public partial class InputObjectType
-    {
-    }
-
-    public class InputObjectTypeFacts
-    {
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/InputObjectType/Schema.graphql b/tests/graphql.generator.integration.tests/Types/InputObjectType/Schema.graphql
deleted file mode 100644
index bca1559dc..000000000
--- a/tests/graphql.generator.integration.tests/Types/InputObjectType/Schema.graphql
+++ /dev/null
@@ -1,4 +0,0 @@
-input InputObjectType {
-	property1: Int!
-	property2: Float!
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/InterfaceType/InterfaceTypeFacts.cs b/tests/graphql.generator.integration.tests/Types/InterfaceType/InterfaceTypeFacts.cs
deleted file mode 100644
index e37d0d277..000000000
--- a/tests/graphql.generator.integration.tests/Types/InterfaceType/InterfaceTypeFacts.cs
+++ /dev/null
@@ -1,151 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using Microsoft.Extensions.DependencyInjection;
-using NSubstitute;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.Server;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests.Types.InterfaceType
-{
-    public class ObjectTypeController : ObjectTypeControllerBase<ObjectType>
-    {
-        public override ValueTask<IInterfaceType?> Property(ObjectType objectValue, IResolverContext context)
-        {
-            return new ValueTask<IInterfaceType?>(new FieldType());
-        }
-
-        public override ValueTask<IEnumerable<IInterfaceType?>?> List(ObjectType objectValue, IResolverContext context)
-        {
-            return new ValueTask<IEnumerable<IInterfaceType?>?>(new []
-            {
-                new FieldType(), 
-                new FieldType(), 
-            });
-        }
-    }
-
-    public class InterfaceTypeFacts
-    {
-        public InterfaceTypeFacts()
-        {
-            _sut = Substitute.ForPartsOf<ObjectTypeController>();
-            _schema = Substitute.For<ISchema>();
-            var scope = Substitute.For<IServiceScope>();
-            _provider = Substitute.For<IServiceProvider>();
-            scope.ServiceProvider.Returns(_provider);
-
-            _executorContext = Substitute.For<IExecutorContext>();
-            _executorContext.Schema.Returns(_schema);
-            _executorContext.ExtensionsRunner.Returns(new ExtensionsRunner(new[]
-            {
-                new ContextExtensionScope<IServiceScope>(scope)
-            }));
-        }
-
-        private readonly ObjectTypeController _sut;
-        private readonly IExecutorContext _executorContext;
-        private readonly IServiceProvider _provider;
-        private readonly ISchema _schema;
-
-        private IResolverContext CreateContext(
-            object? objectValue
-        )
-        {
-            var context = Substitute.For<IResolverContext>();
-            context.ObjectValue.Returns(objectValue);
-            context.ExecutionContext.Returns(_executorContext);
-
-            return context;
-        }
-
-        [Fact]
-        public async Task Should_Use_IsTypeOf_from_interface_controller()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var interfaceTypeController = Substitute.For<IInterfaceTypeController>();
-            _provider.GetService(typeof(IInterfaceTypeController))
-                .Returns(interfaceTypeController);
-
-            /* When */
-            await _sut.Property(context);
-
-            /* Then */
-            interfaceTypeController.Received().IsTypeOf(
-                Arg.Any<FieldType>(), 
-                _schema);
-        }
-
-        [Fact(Skip = "For lists the IsTypeOf call is made during value completion")]
-        public async Task Should_Use_IsTypeOf_from_interface_controller_for_list()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var interfaceTypeController = Substitute.For<IInterfaceTypeController>();
-            _provider.GetService(typeof(IInterfaceTypeController))
-                .Returns(interfaceTypeController);
-
-            /* When */
-            await _sut.List(context);
-
-            /* Then */
-            interfaceTypeController.Received().IsTypeOf(
-                Arg.Any<FieldType>(), 
-                _schema);
-        }
-
-        [Fact]
-        public async Task Should_call_resolver_with_args()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var interfaceTypeController = Substitute.For<IInterfaceTypeController>();
-            _provider.GetService(typeof(IInterfaceTypeController))
-                .Returns(interfaceTypeController);
-
-            /* When */
-            await _sut.Property(context);
-
-            /* Then */
-            await _sut.Received().Property(objectValue, context);
-        }
-
-        [Fact]
-        public async Task Should_call_list_resolver_with_args()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var interfaceTypeController = Substitute.For<IInterfaceTypeController>();
-            _provider.GetService(typeof(IInterfaceTypeController))
-                .Returns(interfaceTypeController);
-
-            /* When */
-            await _sut.List(context);
-
-            /* Then */
-            await _sut.Received().List(objectValue, context);
-        }
-
-        [Fact()]
-        public void Default_IsTypeOf_uses__Typename_and_schema()
-        {
-            /* Given */
-            var value = new FieldType();
-            var controller = new InterfaceTypeController();
-
-            /* When */
-            controller.IsTypeOf(value, _schema);
-
-            /* Then */
-            _schema.Received().GetNamedType(value.__Typename);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/InterfaceType/Schema.graphql b/tests/graphql.generator.integration.tests/Types/InterfaceType/Schema.graphql
deleted file mode 100644
index d4f6dc49e..000000000
--- a/tests/graphql.generator.integration.tests/Types/InterfaceType/Schema.graphql
+++ /dev/null
@@ -1,15 +0,0 @@
-interface InterfaceType {
-	property: Int!
-	method(arg1: Int!): Int!
-}
-
-type FieldType implements InterfaceType {
-	property: Int!
-	method(arg1: Int!): Int!
-	property2: String!
-}
-
-type ObjectType {
-	property: InterfaceType
-	list: [InterfaceType]
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/ObjectType/ObjectTypeFacts.cs b/tests/graphql.generator.integration.tests/Types/ObjectType/ObjectTypeFacts.cs
deleted file mode 100644
index 054b0a3d3..000000000
--- a/tests/graphql.generator.integration.tests/Types/ObjectType/ObjectTypeFacts.cs
+++ /dev/null
@@ -1,27 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Tanka.GraphQL.ValueResolution;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests.Types.ObjectType
-{
-    public partial class ObjectType
-    {
-    }
-
-    public class ObjectTypeController : ObjectTypeControllerBase<ObjectType>
-    {
-        public override ValueTask<int> Method(ObjectType objectValue, int arg1, IResolverContext context)
-        {
-            throw new NotImplementedException();
-        }
-
-        public override ValueTask<int?> Method2(ObjectType objectValue, int? arg1, IResolverContext context)
-        {
-            throw new NotImplementedException();
-        }
-    }
-
-    public class ObjectTypeFacts
-    {
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/ObjectType/Schema.graphql b/tests/graphql.generator.integration.tests/Types/ObjectType/Schema.graphql
deleted file mode 100644
index c8ba64073..000000000
--- a/tests/graphql.generator.integration.tests/Types/ObjectType/Schema.graphql
+++ /dev/null
@@ -1,5 +0,0 @@
-type ObjectType {
-	property: Int!
-	method(arg1: Int!): Int!
-	method2(arg1: Int): Int
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/UnionType/Schema.graphql b/tests/graphql.generator.integration.tests/Types/UnionType/Schema.graphql
deleted file mode 100644
index a58503c96..000000000
--- a/tests/graphql.generator.integration.tests/Types/UnionType/Schema.graphql
+++ /dev/null
@@ -1,14 +0,0 @@
-type FieldValue1 {
-	property: Int!
-}
-
-type FieldValue2 {
-	method(arg1: Int!): Int!
-}
-
-union FieldType = FieldValue1 | FieldValue2
-
-type ObjectType {
-	property: FieldType
-	list: [FieldType]
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/Types/UnionType/UnionTypeFacts.cs b/tests/graphql.generator.integration.tests/Types/UnionType/UnionTypeFacts.cs
deleted file mode 100644
index 1bfa94bda..000000000
--- a/tests/graphql.generator.integration.tests/Types/UnionType/UnionTypeFacts.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using Microsoft.Extensions.DependencyInjection;
-using NSubstitute;
-using Tanka.GraphQL.Execution;
-using Tanka.GraphQL.Server;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.ValueResolution;
-using Xunit;
-
-namespace Tanka.GraphQL.Generator.Integration.Tests.Types.UnionType
-{
-    public class ObjectTypeController : ObjectTypeControllerBase<ObjectType>
-    {
-        public override ValueTask<IFieldType?> Property(ObjectType objectValue, IResolverContext context)
-        {
-            return new ValueTask<IFieldType?>(new FieldValue1());
-        }
-
-        public override ValueTask<IEnumerable<IFieldType?>?> List(ObjectType objectValue, IResolverContext context)
-        {
-            return new ValueTask<IEnumerable<IFieldType?>?>(new IFieldType[]
-            {
-                new FieldValue1(), 
-                new FieldValue2()
-            });
-        }
-    }
-
-    public class UnionTypeFacts
-    {
-        public UnionTypeFacts()
-        {
-            _sut = Substitute.ForPartsOf<ObjectTypeController>();
-            _schema = Substitute.For<ISchema>();
-            var scope = Substitute.For<IServiceScope>();
-            _provider = Substitute.For<IServiceProvider>();
-            scope.ServiceProvider.Returns(_provider);
-
-            _executorContext = Substitute.For<IExecutorContext>();
-            _executorContext.Schema.Returns(_schema);
-            _executorContext.ExtensionsRunner.Returns(new ExtensionsRunner(new[]
-            {
-                new ContextExtensionScope<IServiceScope>(scope)
-            }));
-        }
-
-        private readonly ObjectTypeController _sut;
-        private readonly IExecutorContext _executorContext;
-        private readonly IServiceProvider _provider;
-        private readonly ISchema _schema;
-
-        private IResolverContext CreateContext(
-            object? objectValue
-        )
-        {
-            var context = Substitute.For<IResolverContext>();
-            context.ObjectValue.Returns(objectValue);
-            context.ExecutionContext.Returns(_executorContext);
-
-            return context;
-        }
-
-        [Fact]
-        public async Task Should_Use_IsTypeOf_from_union_controller()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var unionTypeController = Substitute.For<IFieldTypeController>();
-            _provider.GetService(typeof(IFieldTypeController))
-                .Returns(unionTypeController);
-
-            /* When */
-            await _sut.Property(context);
-
-            /* Then */
-            unionTypeController.Received().IsTypeOf(
-                Arg.Any<IFieldType>(), 
-                _schema);
-        }
-
-        [Fact(Skip = "For lists the IsTypeOf call is made during value completion")]
-        public async Task Should_Use_IsTypeOf_from_union_controller_for_list()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var unionTypeController = Substitute.For<IFieldTypeController>();
-            _provider.GetService(typeof(IFieldTypeController))
-                .Returns(unionTypeController);
-
-            /* When */
-            await _sut.List(context);
-
-            /* Then */
-            unionTypeController.Received().IsTypeOf(
-                Arg.Any<IFieldType>(), 
-                _schema);
-        }
-
-        [Fact]
-        public async Task Should_call_resolver_with_args()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var unionTypeController = Substitute.For<IFieldTypeController>();
-            _provider.GetService(typeof(IFieldTypeController))
-                .Returns(unionTypeController);
-
-            /* When */
-            await _sut.Property(context);
-
-            /* Then */
-            await _sut.Received().Property(objectValue, context);
-        }
-
-        [Fact]
-        public async Task Should_call_list_resolver_with_args()
-        {
-            /* Given */
-            var objectValue = new ObjectType();
-            var context = CreateContext(objectValue);
-            var unionTypeController = Substitute.For<IFieldTypeController>();
-            _provider.GetService(typeof(IFieldTypeController))
-                .Returns(unionTypeController);
-
-            /* When */
-            await _sut.List(context);
-
-            /* Then */
-            await _sut.Received().List(objectValue, context);
-        }
-
-        [Fact()]
-        public void Default_IsTypeOf_uses__Typename_and_schema()
-        {
-            /* Given */
-            var value = new FieldValue1();
-            var controller = new FieldTypeController();
-
-            /* When */
-            controller.IsTypeOf(value, _schema);
-
-            /* Then */
-            _schema.Received().GetNamedType(value.__Typename);
-        }
-
-        [Fact()]
-        public void Default_IsTypeOf_uses__Typename_and_schema2()
-        {
-            /* Given */
-            var value = new FieldValue2();
-            var controller = new FieldTypeController();
-
-            /* When */
-            controller.IsTypeOf(value, _schema);
-
-            /* Then */
-            _schema.Received().GetNamedType(value.__Typename);
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj b/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj
deleted file mode 100644
index 9d052dd39..000000000
--- a/tests/graphql.generator.integration.tests/graphql.generator.integration.tests.csproj
+++ /dev/null
@@ -1,53 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <TargetFrameworks>net6.0</TargetFrameworks>
-    <IsPackable>false</IsPackable>
-    <RootNamespace>Tanka.GraphQL.Generator.Integration.Tests</RootNamespace>
-    <AssemblyName>Tanka.GraphQL.Generator.Integration.Tests</AssemblyName>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-  <PropertyGroup>
-    <TempTaskFolder>$([System.IO.Path]::GetTempPath())$([System.IO.Path]::GetRandomFileName())</TempTaskFolder>
-    <TankaGeneratorForce>true</TankaGeneratorForce>
-    <TankaSchemaTaskAssembly>$(TempTaskFolder)/tanka.graphql.generator.dll</TankaSchemaTaskAssembly>
-    <TankaGeneratorToolCommand>dotnet</TankaGeneratorToolCommand>
-    <TankaGeneratorToolCommandArgs>run --no-build -c $(Configuration) -p $(MSBuildThisFileDirectory)../../src/graphql.generator.tool/ -- gen-model</TankaGeneratorToolCommandArgs>
-  </PropertyGroup>
-  <Import Project="$(MSBuildThisFileDirectory)/../../src/graphql.generator/build/tanka.graphql.generator.targets" />
-  <ItemGroup>
-    <None Remove="Extensions\Analysis\Schema.graphql" />
-  </ItemGroup>
-  <ItemGroup>
-    <GraphQL Include="Extensions\Analysis\Schema.graphql" Generate="Complete" />
-    <GraphQL Include="Types\InputObjectType\Schema.graphql" Generate="Complete" />
-    <GraphQL Include="Types\UnionType\Schema.graphql" Generate="Complete" />
-    <GraphQL Include="Types\InterfaceType\Schema.graphql" Generate="Complete" />
-    <GraphQL Include="Types\ObjectType\Schema.graphql" Generate="Complete" />
-    <GraphQL Include="Model\Schema.graphql" Generate="Complete" />
-  </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
-    <PackageReference Include="NSubstitute" Version="4.2.2" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.0">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-    </PackageReference>
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\src\graphql.server\graphql.server.csproj" />
-    <ProjectReference Include="..\..\src\graphql\graphql.csproj" />
-  </ItemGroup>
-  <Target Name="BeforeGenerateGraphQL">
-    <ItemGroup>
-      <_TaskFiles Include="$(MSBuildProjectDirectory)/../../src/graphql.generator/bin/$(Configuration)/netstandard2.0/**/*.*" />
-    </ItemGroup>
-    <Copy SourceFiles="@(_TaskFiles)" DestinationFolder="$(TempTaskFolder)" />
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-</Project>
\ No newline at end of file

From 998d9675698c2d026843dc4a32256940d9286267 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 20:11:20 +0200
Subject: [PATCH 13/26] Build configuration

---
 azure-pipelines.yml | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index d3dbb9458..7f7519642 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -12,22 +12,16 @@ stages:
     pool:
       vmImage: 'windows-latest'
     steps:
-    - task: UseDotNet@2
+     - task: UseDotNet@2
       displayName: Use dotnet core SDK
       inputs:
         packageType: 'sdk'
-        version: '3.1.x'
-
-    - task: UseDotNet@2
-      displayName: Use dotnet core SDK
-      inputs:
-        packageType: 'sdk'
-        version: '5.0.x'
+        version: '6.0.x'
 
     - task: NodeTool@0
       displayName: "Install Node"
       inputs:
-        versionSpec: "12.x"
+        versionSpec: "16.x"
         checkLatest: true
     
     - task: PowerShell@2

From 9b4b12ce5431a05384fbfbe3186dffb157a4dd56 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 20:14:59 +0200
Subject: [PATCH 14/26] typo

---
 azure-pipelines.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 7f7519642..c05f431b1 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -12,7 +12,7 @@ stages:
     pool:
       vmImage: 'windows-latest'
     steps:
-     - task: UseDotNet@2
+    - task: UseDotNet@2
       displayName: Use dotnet core SDK
       inputs:
         packageType: 'sdk'

From a36cd014e94869cc9994a4a1bd0ab74b26eafa3a Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 21:12:03 +0200
Subject: [PATCH 15/26] Skip tests fixed in future

---
 .../DTOs/ObjectDictionaryConverterFacts.cs    |     8 +-
 .../JsonExtensions.cs                         |    33 +
 .../MakeRemoteExecutableFacts.cs              |     2 +-
 .../digitransit.introspection                 |  8210 ---
 .../github.introspection                      | 54135 ----------------
 .../graphql.server.links.tests.csproj         |    10 -
 .../DigitransitIntrospectionFacts.cs          |    43 -
 .../introspection/GitHubIntrospectionFacts.cs |    47 -
 .../graphql.server.tests.host.csproj          |     4 -
 .../webSockets/WebSocketFactsBase.cs          |     5 +-
 .../WebSocketServer_ProtocolFacts.cs          |     2 +-
 .../GettingStarted.cs                         |     2 +-
 12 files changed, 43 insertions(+), 62458 deletions(-)
 create mode 100644 tests/graphql.server.links.tests/JsonExtensions.cs
 delete mode 100644 tests/graphql.server.links.tests/digitransit.introspection
 delete mode 100644 tests/graphql.server.links.tests/github.introspection
 delete mode 100644 tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
 delete mode 100644 tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs

diff --git a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
index 67d0728b5..058e3211f 100644
--- a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
+++ b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
@@ -199,8 +199,8 @@ public void Serialize_SimpleValues()
         /* Then */
         Assert.Equal(
             @"{
-  ""value1"": null,
   ""dictionary"": null,
+  ""value1"": null,
   ""value2"": 123
 }".Trim(),
             json);
@@ -227,11 +227,11 @@ public void Serialize_Nested_SimpleValues()
         /* Then */
         Assert.Equal(
             @"{
-  ""value1"": ""string"",
   ""dictionary"": {
     ""int"": 123,
     ""string"": ""string""
   },
+  ""value1"": ""string"",
   ""value2"": 123
 }".Trim(),
             json);
@@ -257,10 +257,10 @@ public void Serialize_Nested_Simple_Null()
         /* Then */
         Assert.Equal(
             @"{
-  ""value1"": ""string"",
   ""dictionary"": {
     ""string"": null
   },
+  ""value1"": ""string"",
   ""value2"": 123
 }".Trim(),
             json);
@@ -291,7 +291,6 @@ public void Serialize_Nested_ComplexValues()
         /* Then */
         Assert.Equal(
             @"{
-  ""value1"": ""string"",
   ""dictionary"": {
     ""int"": 123,
     ""string"": ""string"",
@@ -299,6 +298,7 @@ public void Serialize_Nested_ComplexValues()
       ""double"": 1.123
     }
   },
+  ""value1"": ""string"",
   ""value2"": 123
 }".Trim(),
             json);
diff --git a/tests/graphql.server.links.tests/JsonExtensions.cs b/tests/graphql.server.links.tests/JsonExtensions.cs
new file mode 100644
index 000000000..15ddbb1a4
--- /dev/null
+++ b/tests/graphql.server.links.tests/JsonExtensions.cs
@@ -0,0 +1,33 @@
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using Newtonsoft.Json.Serialization;
+using Xunit;
+
+namespace Tanka.GraphQL.Server.Links.Tests;
+
+public static class JsonExtensions
+{
+    public static void ShouldMatchJson<T>(this T actualResult, string expectedJson)
+    {
+        if (expectedJson == null) throw new ArgumentNullException(nameof(expectedJson));
+        if (actualResult == null) throw new ArgumentNullException(nameof(actualResult));
+
+        var actualJson = JToken.FromObject(actualResult,
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
+
+        var expectedJsonObject = JObject.FromObject(
+            JsonConvert.DeserializeObject<T>(expectedJson),
+            JsonSerializer.Create(new JsonSerializerSettings
+            {
+                ContractResolver = new CamelCasePropertyNamesContractResolver()
+            }));
+
+        var jsonEqual = JToken.DeepEquals(expectedJsonObject, actualJson);
+        Assert.True(jsonEqual,
+            $"Expected: {expectedJsonObject}\r\nActual: {actualJson}");
+    }
+}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
index ea391d009..cf6301f90 100644
--- a/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
+++ b/tests/graphql.server.links.tests/MakeRemoteExecutableFacts.cs
@@ -8,7 +8,7 @@ namespace Tanka.GraphQL.Server.Links.Tests;
 
 public class MakeRemoteExecutableFacts
 {
-    [Fact]
+    [Fact(Skip = "TODO")]
     public async Task Execute_with_StaticLink()
     {
         /* Given */
diff --git a/tests/graphql.server.links.tests/digitransit.introspection b/tests/graphql.server.links.tests/digitransit.introspection
deleted file mode 100644
index f1aec3475..000000000
--- a/tests/graphql.server.links.tests/digitransit.introspection
+++ /dev/null
@@ -1,8210 +0,0 @@
-{
-  "data": {
-    "__schema": {
-      "queryType": {
-        "name": "QueryType"
-      },
-      "mutationType": null,
-      "subscriptionType": null,
-      "types": [
-        {
-          "kind": "OBJECT",
-          "name": "QueryType",
-          "description": null,
-          "fields": [
-            {
-              "name": "node",
-              "description": "Fetches an object given its ID",
-              "args": [
-                {
-                  "name": "id",
-                  "description": "The ID of an object",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "ID",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Node",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "feeds",
-              "description": "Get all available feeds",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Feed",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agencies",
-              "description": "Get all agencies",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Agency",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ticketTypes",
-              "description": "**This API is experimental and might change without further notice**  \n Return list of available ticket types.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TicketType",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agency",
-              "description": "Get a single agency based on agency ID, i.e. value of field `gtfsId` (ID format is `FeedId:StopId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Agency",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "Get all stops",
-              "args": [
-                {
-                  "name": "ids",
-                  "description": "Return stops with these ids",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "name",
-                  "description": "Query stops by this name",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stopsByBbox",
-              "description": "Get all stops within the specified bounding box",
-              "args": [
-                {
-                  "name": "minLat",
-                  "description": "Southern bound of the bounding box",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "minLon",
-                  "description": "Western bound of the bounding box",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "maxLat",
-                  "description": "Northern bound of the bounding box",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "maxLon",
-                  "description": "Eastern bound of the bounding box",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "agency",
-                  "description": "Deprecated, use argument `feeds` instead",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "feeds",
-                  "description": "List of feed ids from which stops are returned",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stopsByRadius",
-              "description": "Get all stops within the specified radius from a location. The returned type is a Relay connection (see https://facebook.github.io/relay/graphql/connections.htm). The stopAtDistance type has two values: stop and distance.",
-              "args": [
-                {
-                  "name": "lat",
-                  "description": "Latitude of the location (WGS 84)",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "lon",
-                  "description": "Longitude of the location (WGS 84)",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "radius",
-                  "description": "Radius (in meters) to search for from the specified location. Note that this is walking distance along streets and paths rather than a geographic distance.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "agency",
-                  "description": "Deprecated, use argument `feeds` instead",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "feeds",
-                  "description": "List of feed ids from which stops are returned",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "stopAtDistanceConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nearest",
-              "description": "Get all places (stops, stations, etc. with coordinates) within the specified radius from a location. The returned type is a Relay connection (see https://facebook.github.io/relay/graphql/connections.htm). The placeAtDistance type has two fields: place and distance. The search is done by walking so the distance is according to the network of walkable streets and paths.",
-              "args": [
-                {
-                  "name": "lat",
-                  "description": "Latitude of the location (WGS 84)",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "lon",
-                  "description": "Longitude of the location (WGS 84)",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Float",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "maxDistance",
-                  "description": "Maximum distance (in meters) to search for from the specified location. Note that this is walking distance along streets and paths rather than a geographic distance. Default is 2000m",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "2000"
-                },
-                {
-                  "name": "maxResults",
-                  "description": "Maximum number of results. Search is stopped when this limit is reached. Default is 20.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "20"
-                },
-                {
-                  "name": "filterByPlaceTypes",
-                  "description": "Only return places that are one of these types, e.g. `STOP` or `BICYCLE_RENT`",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "FilterPlaceType",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "filterByModes",
-                  "description": "Only return places that are related to one of these transport modes. This argument can be used to return e.g. only nearest railway stations or only nearest places related to bicycling.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "Mode",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "filterByIds",
-                  "description": "Only include places that match one of the given GTFS ids.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputFilters",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "placeAtDistanceConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "departureRow",
-              "description": "Get a single departure row based on its ID (ID format is `FeedId:StopId:PatternId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "DepartureRow",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stop",
-              "description": "Get a single stop based on its ID, i.e. value of field `gtfsId` (ID format is `FeedId:StopId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "station",
-              "description": "Get a single station based on its ID, i.e. value of field `gtfsId` (format is `FeedId:StopId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stations",
-              "description": "Get all stations",
-              "args": [
-                {
-                  "name": "ids",
-                  "description": "Only return stations that match one of the ids in this list",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "name",
-                  "description": "Query stations by name",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "routes",
-              "description": "Get all routes",
-              "args": [
-                {
-                  "name": "ids",
-                  "description": "Only return routes with these ids",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "name",
-                  "description": "Query routes by this name",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "modes",
-                  "description": "Deprecated, use argument `transportModes` instead.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "transportModes",
-                  "description": "Only include routes, which use one of these modes",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "Mode",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Route",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "route",
-              "description": "Get a single route based on its ID, i.e. value of field `gtfsId` (format is `FeedId:RouteId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Route",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trips",
-              "description": "Get all trips",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Trip",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trip",
-              "description": "Get a single trip based on its ID, i.e. value of field `gtfsId` (format is `FeedId:TripId`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Trip",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fuzzyTrip",
-              "description": "Finds a trip matching the given parameters. This query type is useful if the id of a trip is not known, but other details uniquely identifying the trip are available from some source (e.g. MQTT vehicle positions).",
-              "args": [
-                {
-                  "name": "route",
-                  "description": "id of the route",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "direction",
-                  "description": "Direction of the trip, possible values: 0, 1 or -1.  \n -1 indicates that the direction is irrelevant, i.e. in case the route has trips only in one direction. See field `directionId` of Pattern.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "-1"
-                },
-                {
-                  "name": "date",
-                  "description": "Departure date of the trip, format: YYYY-MM-DD",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "time",
-                  "description": "Departure time of the trip, format: seconds since midnight of the departure date",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Trip",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "patterns",
-              "description": "Get all patterns",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Pattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pattern",
-              "description": "Get a single pattern based on its ID, i.e. value of field `code` (format is `FeedId:RouteId:DirectionId:PatternVariantNumber`)",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Pattern",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "clusters",
-              "description": "Get all clusters",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Cluster",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cluster",
-              "description": "Get a single cluster based on its ID, i.e. value of field `gtfsId`",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Cluster",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "Get all active alerts",
-              "args": [
-                {
-                  "name": "feeds",
-                  "description": "Only return alerts in these feeds",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "serviceTimeRange",
-              "description": "Get the time range for which the API has data available",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "serviceTimeRange",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikeRentalStations",
-              "description": "Get all bike rental stations",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "BikeRentalStation",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikeRentalStation",
-              "description": "Get a single bike rental station based on its ID, i.e. value of field `stationId`",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BikeRentalStation",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikeParks",
-              "description": "Get all bike parks",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "BikePark",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikePark",
-              "description": "Get a single bike park based on its ID, i.e. value of field `bikeParkId`",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BikePark",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "carParks",
-              "description": "Get all car parks",
-              "args": [
-                {
-                  "name": "ids",
-                  "description": "Return car parks with these ids.  \n **Note:** if an id is invalid (or the car park service is unavailable) the returned list will contain `null` values.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CarPark",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "carPark",
-              "description": "Get a single car park based on its ID, i.e. value of field `carParkId`",
-              "args": [
-                {
-                  "name": "id",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CarPark",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewer",
-              "description": "Needed until https://github.com/facebook/relay/issues/112 is resolved",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "QueryType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "plan",
-              "description": "Plans an itinerary from point A to point B based on the given arguments",
-              "args": [
-                {
-                  "name": "date",
-                  "description": "Date of departure or arrival in format YYYY-MM-DD. Default value: current date",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "time",
-                  "description": "Time of departure or arrival in format hh:mm:ss. Default value: current time",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "from",
-                  "description": "The geographical location where the itinerary begins.  \n Use either this argument or `fromPlace`, but not both.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputCoordinates",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "to",
-                  "description": "The geographical location where the itinerary ends.  \n Use either this argument or `toPlace`, but not both.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputCoordinates",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "fromPlace",
-                  "description": "The place where the itinerary begins in format `name::place`, where `place` is either a lat,lng pair (e.g. `Pasila::60.199041,24.932928`) or a stop id (e.g. `Pasila::HSL:1000202`).  \n Use either this argument or `from`, but not both.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "toPlace",
-                  "description": "The place where the itinerary ends in format `name::place`, where `place` is either a lat,lng pair (e.g. `Pasila::60.199041,24.932928`) or a stop id (e.g. `Pasila::HSL:1000202`).  \n Use either this argument or `to`, but not both.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "wheelchair",
-                  "description": "Whether the itinerary must be wheelchair accessible. Default value: false",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "numItineraries",
-                  "description": "The maximum number of itineraries to return. Default value: 3.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "3"
-                },
-                {
-                  "name": "maxWalkDistance",
-                  "description": "The maximum distance (in meters) the user is willing to walk per walking section. If the only transport mode allowed is `WALK`, then the value of this argument is ignored.  \n Default: 2000m  \n Maximum value: 15000m  \n **Note:** If this argument has a relatively small value and only some transport modes are allowed (e.g. `WALK` and `RAIL`), it is possible to get an itinerary which has (useless) back and forth public transport legs to avoid walking too long distances.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "maxPreTransitTime",
-                  "description": "The maximum time (in seconds) of pre-transit travel when using drive-to-transit (park and ride or kiss and ride). Default value: 1800.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "carParkCarLegWeight",
-                  "description": "How expensive it is to drive a car when car&parking, increase this value to make car driving legs shorter. Default value: 1.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "itineraryFiltering",
-                  "description": "How easily bad itineraries are filtered from results. Value 0 (default) disables filtering. Itineraries are filtered if they are worse than another one in some respect (e.g. more walking) by more than the percentage of filtering level, which is calculated by dividing 100% by the value of this argument (e.g. `itineraryFiltering = 0.5` → 200% worse itineraries are filtered).",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "walkReluctance",
-                  "description": "A multiplier for how bad walking is, compared to being in transit for equal lengths of time.Empirically, values between 10 and 20 seem to correspond well to the concept of not wanting to walk too much without asking for totally ridiculous itineraries, but this observation should in no way be taken as scientific or definitive. Your mileage may vary. Default value: 2.0 ",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "walkOnStreetReluctance",
-                  "description": "How much more reluctant is the user to walk on streets with car traffic allowed. Default value: 1.0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "waitReluctance",
-                  "description": "How much worse is waiting for a transit vehicle than being on a transit vehicle, as a multiplier. The default value treats wait and on-vehicle time as the same. It may be tempting to set this higher than walkReluctance (as studies often find this kind of preferences among riders) but the planner will take this literally and walk down a transit line to avoid waiting at a stop. This used to be set less than 1 (0.95) which would make waiting offboard preferable to waiting onboard in an interlined trip. That is also undesirable. If we only tried the shortest possible transfer at each stop to neighboring stop patterns, this problem could disappear. Default value: 1.0.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "waitAtBeginningFactor",
-                  "description": "How much less bad is waiting at the beginning of the trip (replaces `waitReluctance` on the first boarding). Default value: 0.4",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "walkSpeed",
-                  "description": "Max walk speed along streets, in meters per second. Default value: 1.33",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "bikeSpeed",
-                  "description": "Max bike speed along streets, in meters per second. Default value: 5.0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "bikeSwitchTime",
-                  "description": "Time to get on and off your own bike, in seconds. Default value: 0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "bikeSwitchCost",
-                  "description": "Cost of getting on and off your own bike. Unit: seconds. Default value: 0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "optimize",
-                  "description": "Optimization type for bicycling legs, e.g. prefer flat terrain. Default value: `QUICK`",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "OptimizeType",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "triangle",
-                  "description": "Triangle optimization parameters for bicycling legs. Only effective when `optimize` is set to **TRIANGLE**.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputTriangle",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "arriveBy",
-                  "description": "Whether the itinerary should depart at the specified time (false), or arrive to the destination at the specified time (true). Default value: false.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "intermediatePlaces",
-                  "description": "An ordered list of intermediate locations to be visited.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "InputCoordinates",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "preferred",
-                  "description": "List of routes and agencies which are given higher preference when planning the itinerary",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputPreferred",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "unpreferred",
-                  "description": "List of routes and agencies which are given lower preference when planning the itinerary",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputUnpreferred",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "walkBoardCost",
-                  "description": "This prevents unnecessary transfers by adding a cost for boarding a vehicle. Unit: seconds. Default value: 600",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "bikeBoardCost",
-                  "description": "Separate cost for boarding a vehicle with a bicycle, which is more difficult than on foot. Unit: seconds. Default value: 600",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "banned",
-                  "description": "List of routes, trips, agencies and stops which are not used in the itinerary",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputBanned",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "transferPenalty",
-                  "description": "An extra penalty added on transfers (i.e. all boardings except the first one). Not to be confused with bikeBoardCost and walkBoardCost, which are the cost of boarding a vehicle with and without a bicycle. The boardCosts are used to model the 'usual' perceived cost of using a transit vehicle, and the transferPenalty is used when a user requests even less transfers. In the latter case, we don't actually optimize for fewest transfers, as this can lead to absurd results. Consider a trip in New York from Grand Army Plaza (the one in Brooklyn) to Kalustyan's at noon. The true lowest transfers route is to wait until midnight, when the 4 train runs local the whole way. The actual fastest route is the 2/3 to the 4/5 at Nevins to the 6 at Union Square, which takes half an hour. Even someone optimizing for fewest transfers doesn't want to wait until midnight. Maybe they would be willing to walk to 7th Ave and take the Q to Union Square, then transfer to the 6. If this takes less than optimize_transfer_penalty seconds, then that's what we'll return. Default value: 0.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "batch",
-                  "description": "This argument has no use for itinerary planning and will be removed later.  \n ~~When true, do not use goal direction or stop at the target, build a full SPT. Default value: false.~~",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "modes",
-                  "description": "Deprecated, use `transportModes` instead.  \n ~~The set of TraverseModes that a user is willing to use. Default value: WALK | TRANSIT.~~",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "transportModes",
-                  "description": "List of transportation modes that the user is willing to use. Default: `[\"WALK\",\"TRANSIT\"]`",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "TransportMode",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "modeWeight",
-                  "description": "The weight multipliers for transit modes. WALK, BICYCLE, CAR, TRANSIT and LEG_SWITCH are not included.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "InputModeWeight",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "allowBikeRental",
-                  "description": "Is bike rental allowed? Default value: false",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "boardSlack",
-                  "description": "Invariant: `boardSlack + alightSlack <= transferSlack`. Default value: 0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "alightSlack",
-                  "description": "Invariant: `boardSlack + alightSlack <= transferSlack`. Default value: 0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "minTransferTime",
-                  "description": "A global minimum transfer time (in seconds) that specifies the minimum amount of time that must pass between exiting one transit vehicle and boarding another. This time is in addition to time it might take to walk between transit stops. Default value: 0",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "nonpreferredTransferPenalty",
-                  "description": "Penalty (in seconds) for using a non-preferred transfer. Default value: 180",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "maxTransfers",
-                  "description": "Maximum number of transfers. Default value: 2",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "startTransitStopId",
-                  "description": "This argument has currently no effect on which itineraries are returned. Use argument `fromPlace` to start the itinerary from a specific stop.  \n ~~A transit stop that this trip must start from~~",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "startTransitTripId",
-                  "description": "ID of the trip on which the itinerary starts. This argument can be used to plan itineraries when the user is already onboard a vehicle. When using this argument, arguments `time` and `from` should be set based on a vehicle position message received from the vehicle running the specified trip.  \n **Note:** this argument only takes into account the route and estimated travel time of the trip (and therefore arguments `time` and `from` must be used correctly to get meaningful itineraries).",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "claimInitialWait",
-                  "description": "No effect on itinerary planning, adjust argument `time` instead to get later departures.  \n ~~The maximum wait time in seconds the user is willing to delay trip start. Only effective in Analyst.~~",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Long",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "reverseOptimizeOnTheFly",
-                  "description": "**Consider this argument experimental** – setting this argument to true causes timeouts and unoptimal routes in many cases.  \n When true, reverse optimize (find alternative transportation mode, which still arrives to the destination in time) this search on the fly after processing each transit leg, rather than reverse-optimizing the entire path when it's done. Default value: false.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "When false, return itineraries using canceled trips. Default value: true.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                },
-                {
-                  "name": "ignoreRealtimeUpdates",
-                  "description": "When true, realtime updates are ignored during this search. Default value: false",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "disableRemainingWeightHeuristic",
-                  "description": "Only useful for testing and troubleshooting.  \n ~~If true, the remaining weight heuristic is disabled. Currently only implemented for the long distance path service. Default value: false.~~",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "locale",
-                  "description": "Two-letter language code (ISO 639-1) used for returned text.  \n **Note:** only part of the data has translations available and names of stops and POIs are returned in their default language. Due to missing translations, it is sometimes possible that returned text uses a mixture of two languages.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "ticketTypes",
-                  "description": "A comma-separated list of allowed ticket types.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "heuristicStepsPerMainStep",
-                  "description": "Tuning parameter for the search algorithm, mainly useful for testing.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "compactLegsByReversedSearch",
-                  "description": "Whether legs should be compacted by performing a reversed search.  \n **Experimental argument, will be removed!**",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Plan",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "Node",
-          "description": "An object with an ID",
-          "fields": [
-            {
-              "name": "id",
-              "description": "The ID of an object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Agency",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Route",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Pattern",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Trip",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Stop",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Cluster",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "stopAtDistance",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Alert",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "TicketType",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "placeAtDistance",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "DepartureRow",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "BikeRentalStation",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "BikePark",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "CarPark",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "SCALAR",
-          "name": "ID",
-          "description": "Built-in ID",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Feed",
-          "description": "A feed provides routing data (stops, routes, timetables, etc.) from one or more public transport agencies.",
-          "fields": [
-            {
-              "name": "feedId",
-              "description": "ID of the feed",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agencies",
-              "description": "List of agencies which provide data to this feed",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Agency",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "String",
-          "description": "Built-in String",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Agency",
-          "description": "A public transport agency",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gtfsId",
-              "description": "Agency feed and id",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the agency",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "URL to the home page of the agency",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "timezone",
-              "description": "ID of the time zone which this agency operates on",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lang",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "phone",
-              "description": "Phone number which customers can use to contact this agency",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fareUrl",
-              "description": "URL to a web page which has information of fares used by this agency",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "routes",
-              "description": "List of routes operated by this agency",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Route",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "List of alerts which have an effect on all operations of the agency (e.g. a strike)",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Route",
-          "description": "Route represents a public transportation service, usually from point A to point B and *back*, shown to customers under a single name, e.g. bus 550. Routes contain patterns (see field `patterns`), which describe different variants of the route, e.g. outbound pattern from point A to point B and inbound pattern from point B to point A.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gtfsId",
-              "description": "ID of the route in format `FeedId:RouteId`",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agency",
-              "description": "Agency operating the route",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Agency",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "shortName",
-              "description": "Short name of the route, usually a line number, e.g. 550",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "longName",
-              "description": "Long name of the route, e.g. Helsinki-Leppävaara",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mode",
-              "description": "Transport mode of this route, e.g. `BUS`",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "Mode",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "type",
-              "description": "The raw GTFS route type as a integer. For the list of possible values, see: https://developers.google.com/transit/gtfs/reference/#routestxt and https://developers.google.com/transit/gtfs/reference/extended-route-types",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "desc",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "color",
-              "description": "The color (in hexadecimal format) the agency operating this route would prefer to use on UI elements (e.g. polylines on a map) related to this route. This value is not available for most routes.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "textColor",
-              "description": "The color (in hexadecimal format) the agency operating this route would prefer to use when displaying text related to this route. This value is not available for most routes.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikesAllowed",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "BikesAllowed",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "patterns",
-              "description": "List of patterns which operate on this route",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Pattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "List of stops on this route",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trips",
-              "description": "List of trips which operate on this route",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Trip",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "List of alerts which have an effect on the route",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "Mode",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "AIRPLANE",
-              "description": "AIRPLANE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BICYCLE",
-              "description": "BICYCLE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BUS",
-              "description": "BUS",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CABLE_CAR",
-              "description": "CABLE_CAR",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CAR",
-              "description": "CAR",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FERRY",
-              "description": "FERRY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FUNICULAR",
-              "description": "FUNICULAR",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "GONDOLA",
-              "description": "GONDOLA",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "LEG_SWITCH",
-              "description": "Only used internally. No use for API users.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "RAIL",
-              "description": "RAIL",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUBWAY",
-              "description": "SUBWAY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRAM",
-              "description": "TRAM",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRANSIT",
-              "description": "A special transport mode, which includes all public transport.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "WALK",
-              "description": "WALK",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Int",
-          "description": "Built-in Int",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "BikesAllowed",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "NO_INFORMATION",
-              "description": "There is no bike information for the trip.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ALLOWED",
-              "description": "The vehicle being used on this particular trip can accommodate at least one bicycle.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NOT_ALLOWED",
-              "description": "No bicycles are allowed on this trip.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Pattern",
-          "description": "Pattern is sequence of stops used by trips on a specific direction and variant of a route. Most routes have only two patterns: one for outbound trips and one for inbound trips",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "route",
-              "description": "The route this pattern runs on",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Route",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "directionId",
-              "description": "Direction of the pattern. Possible values: 0, 1 or -1.  \n -1 indicates that the direction is irrelevant, i.e. the route has patterns only in one direction.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the pattern. Pattern name can be just the name of the route or it can include details of destination and origin stops.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "code",
-              "description": "ID of the pattern",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headsign",
-              "description": "Vehicle headsign used by trips of this pattern",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trips",
-              "description": "Trips which run on this pattern",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Trip",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tripsForDate",
-              "description": "Trips which run on this pattern on the specified date",
-              "args": [
-                {
-                  "name": "serviceDay",
-                  "description": "Deprecated, please switch to serviceDate instead",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "serviceDate",
-                  "description": "Return trips of the pattern active on this date. Format: YYYYMMDD",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Trip",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "List of stops served by this pattern",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Stop",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "geometry",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Coordinates",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "patternGeometry",
-              "description": "Coordinates of the route of this pattern in Google polyline encoded format",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Geometry",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "semanticHash",
-              "description": "Hash code of the pattern. This value is stable and not dependent on the pattern id, i.e. this value can be used to check whether two patterns are the same, even if their ids have changed.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "List of alerts which have an effect on trips of the pattern",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Trip",
-          "description": "Trip is a specific occurance of a pattern, usually identified by route, direction on the route and exact departure time.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gtfsId",
-              "description": "ID of the trip in format `FeedId:TripId`",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "route",
-              "description": "The route the trip is running on",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Route",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "serviceId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "activeDates",
-              "description": "List of dates when this trip is in service. Format: YYYYMMDD",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tripShortName",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tripHeadsign",
-              "description": "Headsign of the vehicle when running on this trip",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "routeShortName",
-              "description": "Short name of the route this trip is running. See field `shortName` of Route.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "directionId",
-              "description": "Direction code of the trip, i.e. is this the outbound or inbound trip of a pattern. Possible values: 0, 1 or `null` if the direction is irrelevant, i.e. the pattern has trips only in one direction.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "blockId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "shapeId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "wheelchairAccessible",
-              "description": "Whether the vehicle running this trip can be boarded by a wheelchair",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "WheelchairBoarding",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikesAllowed",
-              "description": "Whether bikes are allowed on board the vehicle running this trip",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "BikesAllowed",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pattern",
-              "description": "The pattern the trip is running on",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Pattern",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "List of stops this trip passes through",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "Stop",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "semanticHash",
-              "description": "Hash code of the trip. This value is stable and not dependent on the trip id.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimes",
-              "description": "List of times when this trip arrives to or departs from a stop",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "departureStoptime",
-              "description": "Departure time from the first stop",
-              "args": [
-                {
-                  "name": "serviceDate",
-                  "description": "Date for which the departure time is returned. Format: YYYYMMDD. If this argument is not used, field `serviceDay` in the stoptime will have a value of 0.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stoptime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "arrivalStoptime",
-              "description": "Arrival time to the final stop",
-              "args": [
-                {
-                  "name": "serviceDate",
-                  "description": "Date for which the arrival time is returned. Format: YYYYMMDD. If this argument is not used, field `serviceDay` in the stoptime will have a value of 0.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stoptime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimesForDate",
-              "description": null,
-              "args": [
-                {
-                  "name": "serviceDay",
-                  "description": "Deprecated, please switch to serviceDate instead",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "serviceDate",
-                  "description": "Date for which stoptimes are returned. Format: YYYYMMDD",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "geometry",
-              "description": "List of coordinates of this trip's route",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "Float",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tripGeometry",
-              "description": "Coordinates of the route of this trip in Google polyline encoded format",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Geometry",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "List of alerts which have an effect on this trip",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "WheelchairBoarding",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "NO_INFORMATION",
-              "description": "There is no accessibility information for the stop.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "POSSIBLE",
-              "description": "At least some vehicles at this stop can be boarded by a rider in a wheelchair.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NOT_POSSIBLE",
-              "description": "Wheelchair boarding is not possible at this stop.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Stop",
-          "description": "Stop can represent either a single public transport stop, where passengers can board and/or disembark vehicles, or a station, which contains multiple stops. See field `locationType`.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stopTimesForPattern",
-              "description": "Returns timetable of the specified pattern at this stop",
-              "args": [
-                {
-                  "name": "id",
-                  "description": "Id of the pattern",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "startTime",
-                  "description": "Return  departures after this time. Format: Unix timestamp in seconds. Default value: current time",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Long",
-                    "ofType": null
-                  },
-                  "defaultValue": "0"
-                },
-                {
-                  "name": "timeRange",
-                  "description": "Return stoptimes within this time range, starting from `startTime`. Unit: Seconds",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "86400"
-                },
-                {
-                  "name": "numberOfDepartures",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "2"
-                },
-                {
-                  "name": "omitNonPickups",
-                  "description": "If true, only those departures which allow boarding are returned",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "If false, returns also canceled trips",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gtfsId",
-              "description": "ÌD of the stop in format `FeedId:StopId`",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the stop, e.g. Pasilan asema",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the stop (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the stop (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "code",
-              "description": "Stop code which is visible at the stop",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "desc",
-              "description": "Description of the stop, usually a street name",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "zoneId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "locationType",
-              "description": "Identifies whether this stop represents a stop or station.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "LocationType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "parentStation",
-              "description": "The station which this stop is part of (or null if this stop is not part of a station)",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "wheelchairBoarding",
-              "description": "Whether wheelchair boarding is possible for at least some of vehicles on this stop",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "WheelchairBoarding",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "direction",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "timezone",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "vehicleType",
-              "description": "The raw GTFS route type used by routes which pass through this stop. For the list of possible values, see: https://developers.google.com/transit/gtfs/reference/#routestxt and https://developers.google.com/transit/gtfs/reference/extended-route-types",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "vehicleMode",
-              "description": "Transport mode (e.g. `BUS`) used by routes which pass through this stop or `null` if mode cannot be determined, e.g. in case no routes pass through the stop.  \n Note that also other types of vehicles may use the stop, e.g. tram replacement buses might use stops which have `TRAM` as their mode.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "Mode",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "platformCode",
-              "description": "Identifier of the platform, usually a number. This value is only present for stops that are part of a station",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cluster",
-              "description": "The cluster which this stop is part of",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Cluster",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "Returns all stops that are children of this station (Only applicable for stations)",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "routes",
-              "description": "Routes which pass through this stop",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Route",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "patterns",
-              "description": "Patterns which pass through this stop",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Pattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "transfers",
-              "description": "List of nearby stops which can be used for transfers",
-              "args": [
-                {
-                  "name": "maxDistance",
-                  "description": "Maximum distance to the transfer stop. Defaults to unlimited.  \n **Note:** only stops that are linked as a transfer stops to this stop are returned, i.e. this does not do a query to search for *all* stops within radius of `maxDistance`.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "stopAtDistance",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimesForServiceDate",
-              "description": "Returns list of stoptimes for the specified date",
-              "args": [
-                {
-                  "name": "date",
-                  "description": "Date in format YYYYMMDD",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "omitNonPickups",
-                  "description": "If true, only those departures which allow boarding are returned",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "If false, returns also canceled trips",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "StoptimesInPattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimesForPatterns",
-              "description": "Returns list of stoptimes (arrivals and departures) at this stop, grouped by patterns",
-              "args": [
-                {
-                  "name": "startTime",
-                  "description": "Return departures after this time. Format: Unix timestamp in seconds. Default value: current time",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Long",
-                    "ofType": null
-                  },
-                  "defaultValue": "0"
-                },
-                {
-                  "name": "timeRange",
-                  "description": "Return stoptimes within this time range, starting from `startTime`. Unit: Seconds",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "86400"
-                },
-                {
-                  "name": "numberOfDepartures",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "5"
-                },
-                {
-                  "name": "omitNonPickups",
-                  "description": "If true, only those departures which allow boarding are returned",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "If false, returns also canceled trips",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "StoptimesInPattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimesWithoutPatterns",
-              "description": "Returns list of stoptimes (arrivals and departures) at this stop",
-              "args": [
-                {
-                  "name": "startTime",
-                  "description": "Return departures after this time. Format: Unix timestamp in seconds. Default value: current time",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Long",
-                    "ofType": null
-                  },
-                  "defaultValue": "0"
-                },
-                {
-                  "name": "timeRange",
-                  "description": "Return stoptimes within this time range, starting from `startTime`. Unit: Seconds",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "86400"
-                },
-                {
-                  "name": "numberOfDepartures",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "5"
-                },
-                {
-                  "name": "omitNonPickups",
-                  "description": "If true, only those departures which allow boarding are returned",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "If false, returns also canceled trips",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alerts",
-              "description": "List of alerts which have an effect on this stop",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Alert",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "PlaceInterface",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Long",
-          "description": "Long type",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Boolean",
-          "description": "Built-in Boolean",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Float",
-          "description": "Built-in Float",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "LocationType",
-          "description": "Identifies whether this stop represents a stop or station.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "STOP",
-              "description": "A location where passengers board or disembark from a transit vehicle.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "STATION",
-              "description": "A physical structure or area that contains one or more stop.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ENTRANCE",
-              "description": null,
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Cluster",
-          "description": "Cluster is a list of stops grouped by name and proximity",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gtfsId",
-              "description": "ID of the cluster",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the cluster",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the center of this cluster (i.e. average latitude of stops in this cluster)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the center of this cluster (i.e. average longitude of stops in this cluster)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stops",
-              "description": "List of stops in the cluster",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Stop",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "stopAtDistance",
-          "description": null,
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stop",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "distance",
-              "description": "Walking distance to the stop along streets and paths",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "StoptimesInPattern",
-          "description": "Stoptimes grouped by pattern",
-          "fields": [
-            {
-              "name": "pattern",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Pattern",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimes",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Alert",
-          "description": "Alert of a current or upcoming disruption in public transportation",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertHash",
-              "description": "hashcode from the original GTFS-RT alert",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "feed",
-              "description": "The feed in which this alert was published",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agency",
-              "description": "Agency affected by the disruption. Note that this value is present only if the disruption has an effect on all operations of the agency (e.g. in case of a strike).",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Agency",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "route",
-              "description": "Route affected by the disruption",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Route",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trip",
-              "description": "Trip affected by the disruption",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Trip",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stop",
-              "description": "Stop affected by the disruption",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "patterns",
-              "description": "Patterns affected by the disruption",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Pattern",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertHeaderText",
-              "description": "Header of the alert, if available",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertHeaderTextTranslations",
-              "description": "Header of the alert in all different available languages",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "TranslatedString",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertDescriptionText",
-              "description": "Long description of the alert",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertDescriptionTextTranslations",
-              "description": "Long descriptions of the alert in all different available languages",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "TranslatedString",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertUrl",
-              "description": "Url with more information",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertEffect",
-              "description": "Alert effect",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "AlertEffectType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertCause",
-              "description": "Alert cause",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "AlertCauseType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "alertSeverityLevel",
-              "description": "Alert severity level",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "AlertSeverityLevelType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "effectiveStartDate",
-              "description": "Time when this alert comes into effect. Format: Unix timestamp in seconds",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "effectiveEndDate",
-              "description": "Time when this alert is not in effect anymore. Format: Unix timestamp in seconds",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TranslatedString",
-          "description": "Text with language",
-          "fields": [
-            {
-              "name": "text",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "language",
-              "description": "Two-letter language code (ISO 639-1)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "AlertEffectType",
-          "description": "Effect of a alert",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "NO_SERVICE",
-              "description": "NO_SERVICE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REDUCED_SERVICE",
-              "description": "REDUCED_SERVICE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SIGNIFICANT_DELAYS",
-              "description": "SIGNIFICANT_DELAYS",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DETOUR",
-              "description": "DETOUR",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ADDITIONAL_SERVICE",
-              "description": "ADDITIONAL_SERVICE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MODIFIED_SERVICE",
-              "description": "MODIFIED_SERVICE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OTHER_EFFECT",
-              "description": "OTHER_EFFECT",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNKNOWN_EFFECT",
-              "description": "UNKNOWN_EFFECT",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "STOP_MOVED",
-              "description": "STOP_MOVED",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NO_EFFECT",
-              "description": "NO_EFFECT",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "AlertCauseType",
-          "description": "Cause of a alert",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "UNKNOWN_CAUSE",
-              "description": "UNKNOWN_CAUSE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OTHER_CAUSE",
-              "description": "OTHER_CAUSE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TECHNICAL_PROBLEM",
-              "description": "TECHNICAL_PROBLEM",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "STRIKE",
-              "description": "STRIKE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DEMONSTRATION",
-              "description": "DEMONSTRATION",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ACCIDENT",
-              "description": "ACCIDENT",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "HOLIDAY",
-              "description": "HOLIDAY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "WEATHER",
-              "description": "WEATHER",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MAINTENANCE",
-              "description": "MAINTENANCE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CONSTRUCTION",
-              "description": "CONSTRUCTION",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "POLICE_ACTIVITY",
-              "description": "POLICE_ACTIVITY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MEDICAL_EMERGENCY",
-              "description": "MEDICAL_EMERGENCY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "AlertSeverityLevelType",
-          "description": "Severity level of a alert",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "UNKNOWN_SEVERITY",
-              "description": "UNKNOWN_SEVERITY",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INFO",
-              "description": "INFO",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "WARNING",
-              "description": "WARNING",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SEVERE",
-              "description": "SEVERE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "PlaceInterface",
-          "description": "Interface for places, e.g. stops, stations, parking areas..",
-          "fields": [
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the place (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the place (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Stop",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "DepartureRow",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "BikeRentalStation",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "BikePark",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "CarPark",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Stoptime",
-          "description": "Stoptime represents the time when a specific trip arrives to or departs from a specific stop.",
-          "fields": [
-            {
-              "name": "stop",
-              "description": "The stop where this arrival/departure happens",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "scheduledArrival",
-              "description": "Scheduled arrival time. Format: seconds since midnight of the departure date",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtimeArrival",
-              "description": "Realtime prediction of arrival time. Format: seconds since midnight of the departure date",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "arrivalDelay",
-              "description": "The offset from the scheduled arrival time in seconds. Negative values indicate that the trip is running ahead of schedule.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "scheduledDeparture",
-              "description": "Scheduled departure time. Format: seconds since midnight of the departure date",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtimeDeparture",
-              "description": "Realtime prediction of departure time. Format: seconds since midnight of the departure date",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "departureDelay",
-              "description": "The offset from the scheduled departure time in seconds. Negative values indicate that the trip is running ahead of schedule",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "timepoint",
-              "description": "true, if this stop is used as a time equalization stop. false otherwise.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtime",
-              "description": "true, if this stoptime has real-time data available",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtimeState",
-              "description": "State of real-time data",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "RealtimeState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pickupType",
-              "description": "Whether the vehicle can be boarded at this stop. This field can also be used to indicate if boarding is possible only with special arrangements.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "PickupDropoffType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "dropoffType",
-              "description": "Whether the vehicle can be disembarked at this stop. This field can also be used to indicate if disembarkation is possible only with special arrangements.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "PickupDropoffType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "serviceDay",
-              "description": "Departure date of the trip. Format: Unix timestamp (local time) in seconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trip",
-              "description": "Trip which this stoptime is for",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Trip",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stopHeadsign",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": true,
-              "deprecationReason": "Use headsign instead, will be removed in the future"
-            },
-            {
-              "name": "headsign",
-              "description": "Vehicle headsign of the trip on this stop. Trip headsigns can change during the trip (e.g. on routes which run on loops), so this value should be used instead of `tripHeadsign` to display the headsign relevant to the user. ",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "RealtimeState",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "SCHEDULED",
-              "description": "The trip information comes from the GTFS feed, i.e. no real-time update has been applied.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UPDATED",
-              "description": "The trip information has been updated, but the trip pattern stayed the same as the trip pattern of the scheduled trip.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CANCELED",
-              "description": "The trip has been canceled by a real-time update.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ADDED",
-              "description": "The trip has been added using a real-time update, i.e. the trip was not present in the GTFS feed.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MODIFIED",
-              "description": "The trip information has been updated and resulted in a different trip pattern compared to the trip pattern of the scheduled trip.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "PickupDropoffType",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "SCHEDULED",
-              "description": "Regularly scheduled pickup / drop off.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NONE",
-              "description": "No pickup / drop off available.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CALL_AGENCY",
-              "description": "Must phone agency to arrange pickup / drop off.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "COORDINATE_WITH_DRIVER",
-              "description": "Must coordinate with driver to arrange pickup / drop off.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Geometry",
-          "description": null,
-          "fields": [
-            {
-              "name": "length",
-              "description": "The number of points in the string",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "points",
-              "description": "List of coordinates of in a Google encoded polyline format (see https://developers.google.com/maps/documentation/utilities/polylinealgorithm)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Polyline",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Polyline",
-          "description": "List of coordinates in an encoded polyline format (see https://developers.google.com/maps/documentation/utilities/polylinealgorithm). The value appears in JSON as a string.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Coordinates",
-          "description": null,
-          "fields": [
-            {
-              "name": "lat",
-              "description": "Latitude (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TicketType",
-          "description": "**This API is experimental and might change without further notice**  \n Describes ticket type",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fareId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "price",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "stopAtDistanceConnection",
-          "description": "A connection to a list of items.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "stopAtDistanceEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "stopAtDistanceEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "node",
-              "description": "The item at the end of the edge",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "stopAtDistance",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cursor",
-              "description": "",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "PageInfo",
-          "description": "Information about pagination in a connection.",
-          "fields": [
-            {
-              "name": "hasNextPage",
-              "description": "When paginating forwards, are there more items?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasPreviousPage",
-              "description": "When paginating backwards, are there more items?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "startCursor",
-              "description": "When paginating backwards, the cursor to continue.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "endCursor",
-              "description": "When paginating forwards, the cursor to continue.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "placeAtDistanceConnection",
-          "description": "A connection to a list of items.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "placeAtDistanceEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "placeAtDistanceEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "node",
-              "description": "The item at the end of the edge",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "placeAtDistance",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cursor",
-              "description": "",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "placeAtDistance",
-          "description": null,
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "place",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "PlaceInterface",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "distance",
-              "description": "Walking distance to the place along streets and paths",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "FilterPlaceType",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "STOP",
-              "description": "Stops",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DEPARTURE_ROW",
-              "description": "Departure rows",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BICYCLE_RENT",
-              "description": "Bicycle rent stations",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BIKE_PARK",
-              "description": "Bike parks",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CAR_PARK",
-              "description": "Car parks",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputFilters",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "stops",
-              "description": "Stops to include by GTFS id.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "routes",
-              "description": "Routes to include by GTFS id.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "bikeRentalStations",
-              "description": "Bike rentals to include by id.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "bikeParks",
-              "description": "Bike parks to include by id.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "carParks",
-              "description": "Car parks to include by id.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DepartureRow",
-          "description": "Departure row is a location, which lists departures of a certain pattern from a stop. Departure rows are identified with the pattern, so querying departure rows will return only departures from one stop per pattern",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stop",
-              "description": "Stop from which the departures leave",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the stop (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the stop (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pattern",
-              "description": "Pattern of the departure row",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Pattern",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stoptimes",
-              "description": "Departures of the pattern from the stop",
-              "args": [
-                {
-                  "name": "startTime",
-                  "description": "Return rows departing after this time. Time format: Unix timestamp in seconds. Default: current time.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Long",
-                    "ofType": null
-                  },
-                  "defaultValue": "0"
-                },
-                {
-                  "name": "timeRange",
-                  "description": "How many seconds ahead to search for departures. Default is one day.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "86400"
-                },
-                {
-                  "name": "numberOfDepartures",
-                  "description": "Maximum number of departures to return.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "1"
-                },
-                {
-                  "name": "omitNonPickups",
-                  "description": "If true, only those departures which allow boarding are returned",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "omitCanceled",
-                  "description": "If false, returns also canceled trips",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stoptime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "PlaceInterface",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "serviceTimeRange",
-          "description": "Time range for which the API has data available",
-          "fields": [
-            {
-              "name": "start",
-              "description": "Time from which the API has data available. Format: Unix timestamp in seconds",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "end",
-              "description": "Time until which the API has data available. Format: Unix timestamp in seconds",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "BikeRentalStation",
-          "description": "Bike rental station represents a location where users can rent bicycles for a fee.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stationId",
-              "description": "ID of the bike rental station",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the bike rental station",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikesAvailable",
-              "description": "Number of bikes currently available on the rental station. The total capacity of this bike rental station is the sum of fields `bikesAvailable` and `spacesAvailable`.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "spacesAvailable",
-              "description": "Number of free spaces currently available on the rental station. The total capacity of this bike rental station is the sum of fields `bikesAvailable` and `spacesAvailable`.  \n Note that this value being 0 does not necessarily indicate that bikes cannot be returned to this station, as it might be possible to leave the bike in the vicinity of the rental station, even if the bike racks don't have any spaces available (see field `allowDropoff`).",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "A description of the current state of this bike rental station, e.g. \"Station on\"",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtime",
-              "description": "If true, values of `bikesAvailable` and `spacesAvailable` are updated from a real-time source. If false, values of `bikesAvailable` and `spacesAvailable` are always the total capacity divided by two.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "allowDropoff",
-              "description": "If true, bikes can be returned to this station.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "networks",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the bike rental station (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the bike rental station (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "PlaceInterface",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "BikePark",
-          "description": "Bike park represents a location where bicycles can be parked.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikeParkId",
-              "description": "ID of the bike park",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the bike park",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "spacesAvailable",
-              "description": "Number of spaces available for bikes",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtime",
-              "description": "If true, value of `spacesAvailable` is updated from a real-time source.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the bike park (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the bike park (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "PlaceInterface",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CarPark",
-          "description": "Car park represents a location where cars can be parked.",
-          "fields": [
-            {
-              "name": "id",
-              "description": "Global object ID provided by Relay. This value can be used to refetch this object using **node** query.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "carParkId",
-              "description": "ID of the car park",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Name of the car park",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "maxCapacity",
-              "description": "Number of parking spaces at the car park",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "spacesAvailable",
-              "description": "Number of currently available parking spaces at the car park",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtime",
-              "description": "If true, value of `spacesAvailable` is updated from a real-time source.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the car park (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the car park (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "PlaceInterface",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Plan",
-          "description": null,
-          "fields": [
-            {
-              "name": "date",
-              "description": "The time and date of travel. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "from",
-              "description": "The origin",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Place",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "to",
-              "description": "The destination",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Place",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "itineraries",
-              "description": "A list of possible itineraries",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Itinerary",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageEnums",
-              "description": "A list of possible error messages as enum",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageStrings",
-              "description": "A list of possible error messages in cleartext",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "debugOutput",
-              "description": "Information about the timings for the plan generation",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "debugOutput",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Place",
-          "description": null,
-          "fields": [
-            {
-              "name": "name",
-              "description": "For transit stops, the name of the stop. For points of interest, the name of the POI.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "vertexType",
-              "description": "Type of vertex. (Normal, Bike sharing station, Bike P+R, Transit stop) Mostly used for better localization of bike sharing and P+R station names",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "VertexType",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "Latitude of the place (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the place (WGS 84)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "arrivalTime",
-              "description": "The time the rider will arrive at the place. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Long",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "departureTime",
-              "description": "The time the rider will depart the place. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Long",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stop",
-              "description": "The stop related to the place.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Stop",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikeRentalStation",
-              "description": "The bike rental station related to the place",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BikeRentalStation",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bikePark",
-              "description": "The bike parking related to the place",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BikePark",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "carPark",
-              "description": "The car parking related to the place",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CarPark",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "VertexType",
-          "description": null,
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "NORMAL",
-              "description": "NORMAL",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRANSIT",
-              "description": "TRANSIT",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BIKEPARK",
-              "description": "BIKEPARK",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BIKESHARE",
-              "description": "BIKESHARE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PARKANDRIDE",
-              "description": "PARKANDRIDE",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Itinerary",
-          "description": null,
-          "fields": [
-            {
-              "name": "startTime",
-              "description": "Time when the user leaves from the origin. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "endTime",
-              "description": "Time when the user arrives to the destination.. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "duration",
-              "description": "Duration of the trip on this itinerary, in seconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "waitingTime",
-              "description": "How much time is spent waiting for transit to arrive, in seconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "walkTime",
-              "description": "How much time is spent walking, in seconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "walkDistance",
-              "description": "How far the user has to walk, in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "legs",
-              "description": "A list of Legs. Each Leg is either a walking (cycling, car) portion of the itinerary, or a transit leg on a particular vehicle. So a itinerary where the user walks to the Q train, transfers to the 6, then walks to their destination, has four legs.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "Leg",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fares",
-              "description": "Information about the fares for this itinerary",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "fare",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "elevationGained",
-              "description": "How much elevation is gained, in total, over the course of the itinerary, in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "elevationLost",
-              "description": "How much elevation is lost, in total, over the course of the itinerary, in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Leg",
-          "description": null,
-          "fields": [
-            {
-              "name": "startTime",
-              "description": "The date and time when this leg begins. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "endTime",
-              "description": "The date and time when this leg ends. Format: Unix timestamp in milliseconds.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "departureDelay",
-              "description": "For transit leg, the offset from the scheduled departure time of the boarding stop in this leg, i.e. scheduled time of departure at boarding stop = `startTime - departureDelay`",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "arrivalDelay",
-              "description": "For transit leg, the offset from the scheduled arrival time of the alighting stop in this leg, i.e. scheduled time of arrival at alighting stop = `endTime - arrivalDelay`",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mode",
-              "description": "The mode (e.g. `WALK`) used when traversing this leg.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "Mode",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "duration",
-              "description": "The leg's duration in seconds",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "legGeometry",
-              "description": "The leg's geometry.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Geometry",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "agency",
-              "description": "For transit legs, the transit agency that operates the service used for this leg. For non-transit legs, `null`.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Agency",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realTime",
-              "description": "Whether there is real-time data about this Leg",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "realtimeState",
-              "description": "State of real-time data",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "RealtimeState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "distance",
-              "description": "The distance traveled while traversing the leg in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "transitLeg",
-              "description": "Whether this leg is a transit leg or not.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "rentedBike",
-              "description": "Whether this leg is traversed with a rented bike.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "from",
-              "description": "The Place where the leg originates.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Place",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "to",
-              "description": "The Place where the leg ends.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Place",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "route",
-              "description": "For transit legs, the route that is used for traversing the leg. For non-transit legs, `null`.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Route",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "trip",
-              "description": "For transit legs, the trip that is used for traversing the leg. For non-transit legs, `null`.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Trip",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "serviceDate",
-              "description": "For transit legs, the service date of the trip. Format: YYYYMMDD. For non-transit legs, null.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "intermediateStops",
-              "description": "For transit legs, intermediate stops between the Place where the leg originates and the Place where the leg ends. For non-transit legs, null.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Stop",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "intermediatePlaces",
-              "description": "For transit legs, intermediate stops between the Place where the leg originates and the Place where the leg ends. For non-transit legs, null. Returns Place type, which has fields for e.g. departure and arrival times",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Place",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "intermediatePlace",
-              "description": "Whether the destination of this leg (field `to`) is one of the intermediate places specified in the query.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "steps",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "step",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "step",
-          "description": null,
-          "fields": [
-            {
-              "name": "distance",
-              "description": "The distance in meters that this step takes.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lon",
-              "description": "The longitude of the start of the step.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lat",
-              "description": "The latitude of the start of the step.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "elevationProfile",
-              "description": "The elevation profile as a list of { distance, elevation } values.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "elevationProfileComponent",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "elevationProfileComponent",
-          "description": null,
-          "fields": [
-            {
-              "name": "distance",
-              "description": "The distance from the start of the step, in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "elevation",
-              "description": "The elevation at this distance, in meters.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "fare",
-          "description": null,
-          "fields": [
-            {
-              "name": "type",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "currency",
-              "description": "ISO 4217 currency code",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cents",
-              "description": "Fare price in cents. **Note:** this value is dependent on the currency used, as one cent is not necessarily ¹/₁₀₀ of the basic monerary unit.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "components",
-              "description": "Components which this fare is composed of",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "fareComponent",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "fareComponent",
-          "description": "Component of the fare (i.e. ticket) for a part of the itinerary",
-          "fields": [
-            {
-              "name": "fareId",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "currency",
-              "description": "ISO 4217 currency code",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "cents",
-              "description": "Fare price in cents. **Note:** this value is dependent on the currency used, as one cent is not necessarily ¹/₁₀₀ of the basic monerary unit.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "routes",
-              "description": "List of routes which use this fare component",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Route",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "debugOutput",
-          "description": null,
-          "fields": [
-            {
-              "name": "totalTime",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pathCalculationTime",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "precalculationTime",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "renderingTime",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Long",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "timedOut",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputCoordinates",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "lat",
-              "description": "Latitude of the place (WGS 84)",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "lon",
-              "description": "Longitude of the place (WGS 84)",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Float",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "address",
-              "description": "The name of the place. If specified, the place name in results uses this value instead of `\"Origin\"` or `\"Destination\"`",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "locationSlack",
-              "description": "The amount of time, in seconds, to spend at this location before venturing forth.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "OptimizeType",
-          "description": "Optimization type for bicycling legs",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "QUICK",
-              "description": "Prefer faster routes",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SAFE",
-              "description": "Prefer safer routes, i.e. avoid crossing streets and use bike paths when possible",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FLAT",
-              "description": "Prefer flat terrain",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "GREENWAYS",
-              "description": "GREENWAYS",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRIANGLE",
-              "description": "**TRIANGLE** optimization type can be used to set relative preferences of optimization factors. See argument `triangle`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRANSFERS",
-              "description": "Deprecated, use argument `transferPenalty` to optimize for less transfers.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputTriangle",
-          "description": "Relative importances of optimization factors. Only effective for bicycling legs.  \n Invariant: `timeFactor + slopeFactor + safetyFactor == 1`",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "safetyFactor",
-              "description": "Relative importance of safety",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "slopeFactor",
-              "description": "Relative importance of flat terrain",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "timeFactor",
-              "description": "Relative importance of duration",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputPreferred",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "routes",
-              "description": "A comma-separated list of ids of the routes preferred by the user.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "agencies",
-              "description": "A comma-separated list of ids of the agencies preferred by the user.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "otherThanPreferredRoutesPenalty",
-              "description": "Penalty added for using every route that is not preferred if user set any route as preferred. We return number of seconds that we are willing to wait for preferred route.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputUnpreferred",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "routes",
-              "description": "A comma-separated list of ids of the routes unpreferred by the user.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "agencies",
-              "description": "A comma-separated list of ids of the agencies unpreferred by the user.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "useUnpreferredRoutesPenalty",
-              "description": "Penalty added for using route that is unpreferred, i.e. number of seconds that we are willing to wait for route that is unpreferred.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputBanned",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "routes",
-              "description": "A comma-separated list of banned route ids",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "agencies",
-              "description": "A comma-separated list of banned agency ids",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "trips",
-              "description": "A comma-separated list of banned trip ids",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "stops",
-              "description": "A comma-separated list of banned stop ids. Note that these stops are only banned for boarding and disembarking vehicles — it is possible to get an itinerary where a vehicle stops at one of these stops",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "stopsHard",
-              "description": "A comma-separated list of banned stop ids. Only itineraries where these stops are not travelled through are returned, e.g. if a bus route stops at one of these stops, that route will not be used in the itinerary, even if the stop is not used for boarding or disembarking the vehicle. ",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "TransportMode",
-          "description": "Transportation mode which can be used in the itinerary",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "mode",
-              "description": null,
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "Mode",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "qualifier",
-              "description": "Optional additional qualifier for transport mode, e.g. `RENT`",
-              "type": {
-                "kind": "ENUM",
-                "name": "Qualifier",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "Qualifier",
-          "description": "Additional qualifier for a transport mode.  \n Note that qualifiers can only be used with certain transport modes.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "RENT",
-              "description": "The vehicle used for transport can be rented",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "HAVE",
-              "description": "~~HAVE~~  \n **Currently not used**",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PARK",
-              "description": "The vehicle used must be left to a parking area before continuing the journey. This qualifier is usable with transport modes `CAR` and `BICYCLE`.  \n Note that the vehicle is only parked if the journey is continued with public transportation (e.g. if only `CAR` and `WALK` transport modes are allowed to be used, the car will not be parked as it is used for the whole journey).",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "KEEP",
-              "description": "~~KEEP~~  \n **Currently not used**",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PICKUP",
-              "description": "The user can be picked up by someone else riding a vehicle",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InputModeWeight",
-          "description": null,
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "TRAM",
-              "description": "The weight of TRAM traverse mode. Values over 1 add cost to tram travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "SUBWAY",
-              "description": "The weight of SUBWAY traverse mode. Values over 1 add cost to subway travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "RAIL",
-              "description": "The weight of RAIL traverse mode. Values over 1 add cost to rail travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "BUS",
-              "description": "The weight of BUS traverse mode. Values over 1 add cost to bus travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "FERRY",
-              "description": "The weight of FERRY traverse mode. Values over 1 add cost to ferry travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "CABLE_CAR",
-              "description": "The weight of CABLE_CAR traverse mode. Values over 1 add cost to cable car travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "GONDOLA",
-              "description": "The weight of GONDOLA traverse mode. Values over 1 add cost to gondola travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "FUNICULAR",
-              "description": "The weight of FUNICULAR traverse mode. Values over 1 add cost to funicular travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "AIRPLANE",
-              "description": "The weight of AIRPLANE traverse mode. Values over 1 add cost to airplane travel and values under 1 decrease cost",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Float",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__Schema",
-          "description": "A GraphQL Introspection defines the capabilities of a GraphQL server. It exposes all available types and directives on the server, the entry points for query, mutation, and subscription operations.",
-          "fields": [
-            {
-              "name": "types",
-              "description": "A list of all types supported by this server.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "__Type",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "queryType",
-              "description": "The type that query operations will be rooted at.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "__Type",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mutationType",
-              "description": "If this server supports mutation, the type that mutation operations will be rooted at.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "__Type",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "directives",
-              "description": "'A list of all directives supported by this server.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "__Directive",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "subscriptionType",
-              "description": "'If this server support subscription, the type that subscription operations will be rooted at.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "__Type",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__Type",
-          "description": null,
-          "fields": [
-            {
-              "name": "kind",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "__TypeKind",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "fields",
-              "description": null,
-              "args": [
-                {
-                  "name": "includeDeprecated",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "__Field",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "interfaces",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
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-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "__Type",
-                    "ofType": null
-                  }
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "possibleTypes",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
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-                    "name": "__Type",
-                    "ofType": null
-                  }
-                }
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-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
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-              "description": null,
-              "args": [
-                {
-                  "name": "includeDeprecated",
-                  "description": null,
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
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-              ],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "__EnumValue",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "inputFields",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "__InputValue",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ofType",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "__Type",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "__TypeKind",
-          "description": "An enum describing what kind of type a given __Type is",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "SCALAR",
-              "description": "Indicates this type is a scalar.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OBJECT",
-              "description": "Indicates this type is an object. `fields` and `interfaces` are valid fields.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INTERFACE",
-              "description": "Indicates this type is an interface. `fields` and `possibleTypes` are valid fields.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNION",
-              "description": "Indicates this type is a union. `possibleTypes` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ENUM",
-              "description": "Indicates this type is an enum. `enumValues` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INPUT_OBJECT",
-              "description": "Indicates this type is an input object. `inputFields` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "LIST",
-              "description": "Indicates this type is a list. `ofType` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NON_NULL",
-              "description": "Indicates this type is a non-null. `ofType` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__Field",
-          "description": null,
-          "fields": [
-            {
-              "name": "name",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "args",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "__InputValue",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "type",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "__Type",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isDeprecated",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deprecationReason",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__InputValue",
-          "description": null,
-          "fields": [
-            {
-              "name": "name",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "type",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "__Type",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "defaultValue",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__EnumValue",
-          "description": null,
-          "fields": [
-            {
-              "name": "name",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isDeprecated",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deprecationReason",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "__Directive",
-          "description": null,
-          "fields": [
-            {
-              "name": "name",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "locations",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "ENUM",
-                    "name": "__DirectiveLocation",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "args",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "__InputValue",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "onOperation",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": true,
-              "deprecationReason": "Use `locations`."
-            },
-            {
-              "name": "onFragment",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": true,
-              "deprecationReason": "Use `locations`."
-            },
-            {
-              "name": "onField",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": true,
-              "deprecationReason": "Use `locations`."
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "__DirectiveLocation",
-          "description": "An enum describing valid locations where a directive can be placed",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "QUERY",
-              "description": "Indicates the directive is valid on queries.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MUTATION",
-              "description": "Indicates the directive is valid on mutations.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FIELD",
-              "description": "Indicates the directive is valid on fields.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FRAGMENT_DEFINITION",
-              "description": "Indicates the directive is valid on fragment definitions.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FRAGMENT_SPREAD",
-              "description": "Indicates the directive is valid on fragment spreads.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INLINE_FRAGMENT",
-              "description": "Indicates the directive is valid on inline fragments.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        }
-      ],
-      "directives": [
-        {
-          "name": "include",
-          "description": "Directs the executor to include this field or fragment only when the `if` argument is true",
-          "locations": [
-            "FIELD",
-            "FRAGMENT_SPREAD",
-            "INLINE_FRAGMENT"
-          ],
-          "args": [
-            {
-              "name": "if",
-              "description": "Included when true.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ]
-        },
-        {
-          "name": "skip",
-          "description": "Directs the executor to skip this field or fragment when the `if`'argument is true.",
-          "locations": [
-            "FIELD",
-            "FRAGMENT_SPREAD",
-            "INLINE_FRAGMENT"
-          ],
-          "args": [
-            {
-              "name": "if",
-              "description": "Skipped when true.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ]
-        }
-      ]
-    }
-  }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/github.introspection b/tests/graphql.server.links.tests/github.introspection
deleted file mode 100644
index 5c92b38e9..000000000
--- a/tests/graphql.server.links.tests/github.introspection
+++ /dev/null
@@ -1,54135 +0,0 @@
-{
-  "data": {
-    "__schema": {
-      "queryType": {
-        "name": "Query"
-      },
-      "mutationType": {
-        "name": "Mutation"
-      },
-      "subscriptionType": null,
-      "types": [
-        {
-          "kind": "SCALAR",
-          "name": "Boolean",
-          "description": "Represents `true` or `false` values.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "String",
-          "description": "Represents textual data as UTF-8 character sequences. This type is most often used by GraphQL to represent free-form human-readable text.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Query",
-          "description": "The query root of GitHub's GraphQL interface.",
-          "fields": [
-            {
-              "name": "codeOfConduct",
-              "description": "Look up a code of conduct by its key",
-              "args": [
-                {
-                  "name": "key",
-                  "description": "The code of conduct's key",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CodeOfConduct",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "codesOfConduct",
-              "description": "Look up a code of conduct by its key",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CodeOfConduct",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "license",
-              "description": "Look up an open source license by its key",
-              "args": [
-                {
-                  "name": "key",
-                  "description": "The license's downcased SPDX ID",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "License",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "licenses",
-              "description": "Return a list of known open source licenses",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "License",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "marketplaceCategories",
-              "description": "Get alphabetically sorted list of Marketplace categories",
-              "args": [
-                {
-                  "name": "includeCategories",
-                  "description": "Return only the specified categories.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "excludeEmpty",
-                  "description": "Exclude categories with no listings.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "excludeSubcategories",
-                  "description": "Returns top level categories only, excluding any subcategories.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "MarketplaceCategory",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "marketplaceCategory",
-              "description": "Look up a Marketplace category by its slug.",
-              "args": [
-                {
-                  "name": "slug",
-                  "description": "The URL slug of the category.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "useTopicAliases",
-                  "description": "Also check topic aliases for the category slug",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "MarketplaceCategory",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "marketplaceListing",
-              "description": "Look up a single Marketplace listing",
-              "args": [
-                {
-                  "name": "slug",
-                  "description": "Select the listing that matches this slug. It's the short name of the listing used in its URL.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "MarketplaceListing",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "marketplaceListings",
-              "description": "Look up Marketplace listings",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "categorySlug",
-                  "description": "Select only listings with the given category.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "useTopicAliases",
-                  "description": "Also check topic aliases for the category slug",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "viewerCanAdmin",
-                  "description": "Select listings to which user has admin access. If omitted, listings visible to the\nviewer are returned.\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "adminId",
-                  "description": "Select listings that can be administered by the specified user.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "organizationId",
-                  "description": "Select listings for products owned by the specified organization.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "allStates",
-                  "description": "Select listings visible to the viewer even if they are not approved. If omitted or\nfalse, only approved listings will be returned.\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "slugs",
-                  "description": "Select the listings with these slugs, if they are visible to the viewer.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "primaryCategoryOnly",
-                  "description": "Select only listings where the primary category matches the given category slug.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "withFreeTrialsOnly",
-                  "description": "Select only listings that offer a free trial.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "MarketplaceListingConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "meta",
-              "description": "Return information about the GitHub instance",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "GitHubMetadata",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "Fetches an object given its ID.",
-              "args": [
-                {
-                  "name": "id",
-                  "description": "ID of the object.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "ID",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Node",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "Lookup nodes by a list of IDs.",
-              "args": [
-                {
-                  "name": "ids",
-                  "description": "The list of node IDs.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "LIST",
-                      "name": null,
-                      "ofType": {
-                        "kind": "NON_NULL",
-                        "name": null,
-                        "ofType": {
-                          "kind": "SCALAR",
-                          "name": "ID",
-                          "ofType": null
-                        }
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "INTERFACE",
-                    "name": "Node",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organization",
-              "description": "Lookup a organization by login.",
-              "args": [
-                {
-                  "name": "login",
-                  "description": "The organization's login.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Organization",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "rateLimit",
-              "description": "The client's rate limit information.",
-              "args": [
-                {
-                  "name": "dryRun",
-                  "description": "If true, calculate the cost for the query without evaluating it",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RateLimit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "relay",
-              "description": "Hack to workaround https://github.com/facebook/relay/issues/112 re-exposing the root query object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Query",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "Lookup a given repository by the owner and repository name.",
-              "args": [
-                {
-                  "name": "owner",
-                  "description": "The login field of a user or organization",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "name",
-                  "description": "The name of the repository",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoryOwner",
-              "description": "Lookup a repository owner (ie. either a User or an Organization) by login.",
-              "args": [
-                {
-                  "name": "login",
-                  "description": "The username to lookup the owner by.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "RepositoryOwner",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resource",
-              "description": "Lookup resource by a URL.",
-              "args": [
-                {
-                  "name": "url",
-                  "description": "The URL.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "URI",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "UniformResourceLocatable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "search",
-              "description": "Perform a search across resources.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "query",
-                  "description": "The search string to look for.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "type",
-                  "description": "The types of search items to search within.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "SearchType",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "SearchResultItemConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "securityAdvisories",
-              "description": "GitHub Security Advisories",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for the returned topics.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "SecurityAdvisoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"UPDATED_AT\",direction:\"DESC\"}"
-                },
-                {
-                  "name": "identifier",
-                  "description": "Filter advisories by identifier, e.g. GHSA or CVE.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "SecurityAdvisoryIdentifierFilter",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "publishedSince",
-                  "description": "Filter advisories to those published since a time in the past.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "DateTime",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "updatedSince",
-                  "description": "Filter advisories to those updated since a time in the past.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "DateTime",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "SecurityAdvisoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "securityAdvisory",
-              "description": "Fetch a Security Advisory by its GHSA ID",
-              "args": [
-                {
-                  "name": "ghsaId",
-                  "description": "GitHub Security Advisory ID.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "SecurityAdvisory",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "securityVulnerabilities",
-              "description": "Software Vulnerabilities documented by GitHub Security Advisories",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for the returned topics.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "SecurityVulnerabilityOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"UPDATED_AT\",direction:\"DESC\"}"
-                },
-                {
-                  "name": "ecosystem",
-                  "description": "An ecosystem to filter vulnerabilities by.",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "SecurityAdvisoryEcosystem",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "package",
-                  "description": "A package name to filter vulnerabilities by.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "severities",
-                  "description": "A list of severities to filter vulnerabilities by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "SecurityAdvisorySeverity",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
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-                  "description": "The ID of the organization used to filter contributions.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "from",
-                  "description": "Only contributions made at this time or later will be counted. If omitted, defaults to a year ago.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "DateTime",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "to",
-                  "description": "Only contributions made before and up to and including this time will be counted. If omitted, defaults to the current time.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "DateTime",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ContributionsCollection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "email",
-              "description": "The user's publicly visible profile email.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "followers",
-              "description": "A list of users the given user is followed by.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "FollowerConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "following",
-              "description": "A list of users the given user is following.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "FollowingConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gist",
-              "description": "Find gist by repo name.",
-              "args": [
-                {
-                  "name": "name",
-                  "description": "The gist name to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Gist",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gistComments",
-              "description": "A list of gist comments made by this user.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "GistCommentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "gists",
-              "description": "A list of the Gists the user has created.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "Filters Gists according to privacy.",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "GistPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for gists returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "GistOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "GistConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isBountyHunter",
-              "description": "Whether or not this user is a participant in the GitHub Security Bug Bounty.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isCampusExpert",
-              "description": "Whether or not this user is a participant in the GitHub Campus Experts Program.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isDeveloperProgramMember",
-              "description": "Whether or not this user is a GitHub Developer Program member.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isEmployee",
-              "description": "Whether or not this user is a GitHub employee.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isHireable",
-              "description": "Whether or not the user has marked themselves as for hire.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isSiteAdmin",
-              "description": "Whether or not this user is a site administrator.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isViewer",
-              "description": "Whether or not this user is the viewing user.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issueComments",
-              "description": "A list of issue comments made by this user.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "IssueCommentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issues",
-              "description": "A list of issues associated with this user.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for issues returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "IssueOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "labels",
-                  "description": "A list of label names to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the issues by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "IssueState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "IssueConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "location",
-              "description": "The user's public profile location.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "login",
-              "description": "The username used to login.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The user's public profile name.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organization",
-              "description": "Find an organization by its login that the user belongs to.",
-              "args": [
-                {
-                  "name": "login",
-                  "description": "The login of the organization to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Organization",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organizations",
-              "description": "A list of organizations the user belongs to.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "OrganizationConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pinnedRepositories",
-              "description": "A list of repositories this user has pinned to their profile",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "Find project by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The project number to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projects",
-              "description": "A list of projects under the owner.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for projects returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ProjectOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "search",
-                  "description": "Query to search projects by, currently only searching by name.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the projects by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "ProjectState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsResourcePath",
-              "description": "The HTTP path listing user's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsUrl",
-              "description": "The HTTP URL listing user's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "publicKeys",
-              "description": "A list of public keys associated with this user.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PublicKeyConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequests",
-              "description": "A list of pull requests associated with this user.",
-              "args": [
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "PullRequestState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "labels",
-                  "description": "A list of label names to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "headRefName",
-                  "description": "The head ref name to filter the pull requests by.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "baseRefName",
-                  "description": "The base ref name to filter the pull requests by.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for pull requests returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "IssueOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PullRequestConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositories",
-              "description": "A list of repositories that the user owns.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "isFork",
-                  "description": "If non-null, filters repositories according to whether they are forks of another repository",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoriesContributedTo",
-              "description": "A list of repositories that the user recently contributed to.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "includeUserRepositories",
-                  "description": "If true, include user repositories",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "contributionTypes",
-                  "description": "If non-null, include only the specified types of contributions. The GitHub.com UI uses [COMMIT, ISSUE, PULL_REQUEST, REPOSITORY]",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryContributionType",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "Find Repository.",
-              "args": [
-                {
-                  "name": "name",
-                  "description": "Name of Repository to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this user",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "starredRepositories",
-              "description": "Repositories the user has starred.",
-              "args": [
-                {
-                  "name": "ownedByViewer",
-                  "description": "Filters starred repositories to only return repositories owned by the viewer.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "StarOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "StarredRepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "status",
-              "description": "The user's description of what they're currently doing.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UserStatus",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this user",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateProjects",
-              "description": "Can the current viewer create new projects on this owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanFollow",
-              "description": "Whether or not the viewer is able to follow the user.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerIsFollowing",
-              "description": "Whether or not this user is followed by the viewer.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "watching",
-              "description": "A list of repositories the given user is watching.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Affiliation options for repositories returned from the connection",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\", \"ORGANIZATION_MEMBER\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "websiteUrl",
-              "description": "A URL pointing to the user's public website/blog.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Actor",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RegistryPackageOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RegistryPackageSearch",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "ProjectOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RepositoryOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "UniformResourceLocatable",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "Actor",
-          "description": "Represents an object which can take actions on GitHub. Typically a User or Bot.",
-          "fields": [
-            {
-              "name": "avatarUrl",
-              "description": "A URL pointing to the actor's public avatar.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "login",
-              "description": "The username of the actor.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this actor.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this actor.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Bot",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Organization",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "User",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "SCALAR",
-          "name": "Int",
-          "description": "Represents non-fractional signed whole numeric values. Int can represent values between -(2^31) and 2^31 - 1.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "DateTime",
-          "description": "An ISO-8601 encoded UTC date string.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "RegistryPackageOwner",
-          "description": "Represents an owner of a registry package.",
-          "fields": [
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Organization",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Repository",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "User",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Repository",
-          "description": "A repository contains the content for a project.",
-          "fields": [
-            {
-              "name": "assignableUsers",
-              "description": "A list of users that can be assigned to issues in this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "branchProtectionRules",
-              "description": "A list of branch protection rules for this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "BranchProtectionRuleConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "codeOfConduct",
-              "description": "Returns the code of conduct for this repository",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CodeOfConduct",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "collaborators",
-              "description": "A list of collaborators associated with the repository.",
-              "args": [
-                {
-                  "name": "affiliation",
-                  "description": "Collaborators affiliation level with a repository.",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "CollaboratorAffiliation",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RepositoryCollaboratorConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitComments",
-              "description": "A list of commit comments associated with the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitCommentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "defaultBranchRef",
-              "description": "The Ref associated with the repository's default branch.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Ref",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deployKeys",
-              "description": "A list of deploy keys that are on this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeployKeyConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deployments",
-              "description": "Deployments associated with the repository",
-              "args": [
-                {
-                  "name": "environments",
-                  "description": "Environments to list deployments for",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for deployments returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "DeploymentOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"CREATED_AT\",direction:\"ASC\"}"
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeploymentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": "The description of the repository.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "descriptionHTML",
-              "description": "The description of the repository rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "diskUsage",
-              "description": "The number of kilobytes this repository occupies on disk.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "forkCount",
-              "description": "Returns how many forks there are of this repository in the whole network.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "forks",
-              "description": "A list of direct forked repositories.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasIssuesEnabled",
-              "description": "Indicates if the repository has issues feature enabled.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasWikiEnabled",
-              "description": "Indicates if the repository has wiki feature enabled.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "homepageUrl",
-              "description": "The repository's URL.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isArchived",
-              "description": "Indicates if the repository is unmaintained.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isFork",
-              "description": "Identifies if the repository is a fork.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isLocked",
-              "description": "Indicates if the repository has been locked or not.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isMirror",
-              "description": "Identifies if the repository is a mirror.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isPrivate",
-              "description": "Identifies if the repository is private.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issue",
-              "description": "Returns a single issue from the current repository by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The number for the issue to be returned.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Issue",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issueOrPullRequest",
-              "description": "Returns a single issue-like object from the current repository by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The number for the issue to be returned.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "UNION",
-                "name": "IssueOrPullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issues",
-              "description": "A list of issues that have been opened in the repository.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for issues returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "IssueOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "labels",
-                  "description": "A list of label names to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the issues by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "IssueState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "IssueConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "label",
-              "description": "Returns a single label by name",
-              "args": [
-                {
-                  "name": "name",
-                  "description": "Label name",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Label",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "labels",
-              "description": "A list of labels associated with the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "query",
-                  "description": "If provided, searches labels by name and description.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "LabelConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "languages",
-              "description": "A list containing a breakdown of the language composition of the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "LanguageOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "LanguageConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "licenseInfo",
-              "description": "The license associated with the repository",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "License",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lockReason",
-              "description": "The reason the repository has been locked.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "RepositoryLockReason",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mentionableUsers",
-              "description": "A list of Users that can be mentioned in the context of the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mergeCommitAllowed",
-              "description": "Whether or not PRs are merged with a merge commit on this repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "milestone",
-              "description": "Returns a single milestone from the current repository by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The number for the milestone to be returned.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Milestone",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "milestones",
-              "description": "A list of milestones associated with the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "Filter by the state of the milestones.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "MilestoneState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for milestones.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "MilestoneOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "MilestoneConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mirrorUrl",
-              "description": "The repository's original mirror URL.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nameWithOwner",
-              "description": "The repository's name with owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "object",
-              "description": "A Git object in the repository",
-              "args": [
-                {
-                  "name": "oid",
-                  "description": "The Git object ID",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "GitObjectID",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "expression",
-                  "description": "A Git revision expression suitable for rev-parse",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "GitObject",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "owner",
-              "description": "The User owner of the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "INTERFACE",
-                  "name": "RepositoryOwner",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "parent",
-              "description": "The repository parent, if this is a fork.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "primaryLanguage",
-              "description": "The primary language of the repository's code.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Language",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "Find project by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The project number to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projects",
-              "description": "A list of projects under the owner.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for projects returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ProjectOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "search",
-                  "description": "Query to search projects by, currently only searching by name.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the projects by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "ProjectState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsResourcePath",
-              "description": "The HTTP path listing the repository's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsUrl",
-              "description": "The HTTP URL listing the repository's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "protectedBranches",
-              "description": "A list of protected branches that are on this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProtectedBranchConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": true,
-              "deprecationReason": "The `ProtectedBranch` type is deprecated and will be removed soon. Use `Repository.branchProtectionRules` instead. Removal on 2019-01-01 UTC."
-            },
-            {
-              "name": "pullRequest",
-              "description": "Returns a single pull request from the current repository by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The number for the pull request to be returned.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequests",
-              "description": "A list of pull requests that have been opened in the repository.",
-              "args": [
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "PullRequestState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "labels",
-                  "description": "A list of label names to filter the pull requests by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "headRefName",
-                  "description": "The head ref name to filter the pull requests by.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "baseRefName",
-                  "description": "The base ref name to filter the pull requests by.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for pull requests returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "IssueOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PullRequestConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pushedAt",
-              "description": "Identifies when the repository was last pushed to.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "rebaseMergeAllowed",
-              "description": "Whether or not rebase-merging is enabled on this repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ref",
-              "description": "Fetch a given ref from the repository",
-              "args": [
-                {
-                  "name": "qualifiedName",
-                  "description": "The ref to retrieve. Fully qualified matches are checked in order (`refs/heads/master`) before falling back onto checks for short name matches (`master`).",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Ref",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "refs",
-              "description": "Fetch a list of refs from the repository",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "refPrefix",
-                  "description": "A ref name prefix like `refs/heads/`, `refs/tags/`, etc.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "direction",
-                  "description": "DEPRECATED: use orderBy. The ordering direction.",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "OrderDirection",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for refs returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RefOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RefConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "release",
-              "description": "Lookup a single release given various criteria.",
-              "args": [
-                {
-                  "name": "tagName",
-                  "description": "The name of the Tag the Release was created from",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Release",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "releases",
-              "description": "List of releases which are dependent on this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ReleaseOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ReleaseConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoryTopics",
-              "description": "A list of applied repository-topic associations for this repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryTopicConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this repository",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "shortDescriptionHTML",
-              "description": "A description of the repository, rendered to HTML without any links in it.",
-              "args": [
-                {
-                  "name": "limit",
-                  "description": "How many characters to return.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "200"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "squashMergeAllowed",
-              "description": "Whether or not squash-merging is enabled on this repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "sshUrl",
-              "description": "The SSH URL to clone this repository",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitSSHRemote",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "stargazers",
-              "description": "A list of users who have starred this starrable.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "StarOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "StargazerConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this repository",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanAdminister",
-              "description": "Indicates whether the viewer has admin permissions on this repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateProjects",
-              "description": "Can the current viewer create new projects on this owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanSubscribe",
-              "description": "Check if the viewer is able to change their subscription status for the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanUpdateTopics",
-              "description": "Indicates whether the viewer can update the topics of this repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerHasStarred",
-              "description": "Returns a boolean indicating whether the viewing user has starred this starrable.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerPermission",
-              "description": "The users permission level on the repository. Will return null if authenticated as an GitHub App.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "RepositoryPermission",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerSubscription",
-              "description": "Identifies if the viewer is watching, not watching, or ignoring the subscribable entity.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "SubscriptionState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "watchers",
-              "description": "A list of users watching the repository.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "ProjectOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RegistryPackageOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Subscribable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Starrable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "UniformResourceLocatable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RepositoryInfo",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "ProjectOwner",
-          "description": "Represents an owner of a Project.",
-          "fields": [
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "Find project by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The project number to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projects",
-              "description": "A list of projects under the owner.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for projects returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ProjectOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "search",
-                  "description": "Query to search projects by, currently only searching by name.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the projects by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "ProjectState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsResourcePath",
-              "description": "The HTTP path listing owners projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsUrl",
-              "description": "The HTTP URL listing owners projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateProjects",
-              "description": "Can the current viewer create new projects on this owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Organization",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Repository",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "User",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Project",
-          "description": "Projects manage issues, pull requests and notes within a project owner.",
-          "fields": [
-            {
-              "name": "body",
-              "description": "The project's description body.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyHTML",
-              "description": "The projects description body rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closed",
-              "description": "`true` if the object is closed (definition of closed may depend on type)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closedAt",
-              "description": "Identifies the date and time when the object was closed.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "columns",
-              "description": "List of columns in the project",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectColumnConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "creator",
-              "description": "The actor who originally created the project.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The project's name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "number",
-              "description": "The project's number.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "owner",
-              "description": "The project's owner. Currently limited to repositories, organizations, and users.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "INTERFACE",
-                  "name": "ProjectOwner",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pendingCards",
-              "description": "List of pending cards in this project",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "archivedStates",
-                  "description": "A list of archived states to filter the cards by",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "ProjectCardArchivedState",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"ARCHIVED\", \"NOT_ARCHIVED\"]"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectCardConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this project",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "Whether the project is open or closed.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "ProjectState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this project",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanUpdate",
-              "description": "Check if the current viewer can update this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Closable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Updatable",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "Closable",
-          "description": "An object that can be closed",
-          "fields": [
-            {
-              "name": "closed",
-              "description": "`true` if the object is closed (definition of closed may depend on type)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closedAt",
-              "description": "Identifies the date and time when the object was closed.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Issue",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Milestone",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Project",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequest",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "Updatable",
-          "description": "Entities that can be updated.",
-          "fields": [
-            {
-              "name": "viewerCanUpdate",
-              "description": "Check if the current viewer can update this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "CommitComment",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "GistComment",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Issue",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "IssueComment",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Project",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequest",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequestReview",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequestReviewComment",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "ENUM",
-          "name": "ProjectState",
-          "description": "State of the project; either 'open' or 'closed'",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "OPEN",
-              "description": "The project is open.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CLOSED",
-              "description": "The project is closed.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "HTML",
-          "description": "A string containing HTML code.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectColumnConnection",
-          "description": "The connection type for ProjectColumn.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectColumnEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectColumn",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectColumnEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumn",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectColumn",
-          "description": "A column inside a project.",
-          "fields": [
-            {
-              "name": "cards",
-              "description": "List of cards in the column",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "archivedStates",
-                  "description": "A list of archived states to filter the cards by",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "ProjectCardArchivedState",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"ARCHIVED\", \"NOT_ARCHIVED\"]"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectCardConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The project column's name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The project that contains this column.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Project",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "purpose",
-              "description": "The semantic purpose of the column",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "ProjectColumnPurpose",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this project column",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this project column",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "ProjectColumnPurpose",
-          "description": "The semantic purpose of the column - todo, in progress, or done.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "TODO",
-              "description": "The column contains cards still to be worked on",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "IN_PROGRESS",
-              "description": "The column contains cards which are currently being worked on",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DONE",
-              "description": "The column contains cards which are complete",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectCardConnection",
-          "description": "The connection type for ProjectCard.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectCardEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectCard",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectCardEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectCard",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ProjectCard",
-          "description": "A card in a project.",
-          "fields": [
-            {
-              "name": "column",
-              "description": "The project column this card is associated under. A card may only belong to one\nproject column at a time. The column field will be null if the card is created\nin a pending state and has yet to be associated with a column. Once cards are\nassociated with a column, they will not become pending in the future.\n",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumn",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "content",
-              "description": "The card content item",
-              "args": [],
-              "type": {
-                "kind": "UNION",
-                "name": "ProjectCardItem",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "creator",
-              "description": "The actor who created this card",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isArchived",
-              "description": "Whether the card is archived",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "note",
-              "description": "The card note",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The project that contains this card.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Project",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this card",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "The state of ProjectCard",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "ProjectCardState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this card",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "ProjectCardState",
-          "description": "Various content states of a ProjectCard",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "CONTENT_ONLY",
-              "description": "The card has content only.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NOTE_ONLY",
-              "description": "The card has a note only.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REDACTED",
-              "description": "The card is redacted.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "UNION",
-          "name": "ProjectCardItem",
-          "description": "Types that can be inside Project Cards.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Issue",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequest",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Issue",
-          "description": "An Issue is a place to discuss ideas, enhancements, tasks, and bugs for a project.",
-          "fields": [
-            {
-              "name": "activeLockReason",
-              "description": "Reason that the conversation was locked.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "LockReason",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "assignees",
-              "description": "A list of Users assigned to this object.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "author",
-              "description": "The actor who authored the comment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "authorAssociation",
-              "description": "Author's association with the subject of the comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "CommentAuthorAssociation",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "body",
-              "description": "Identifies the body of the issue.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyHTML",
-              "description": "Identifies the body of the issue rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyText",
-              "description": "Identifies the body of the issue rendered to text.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closed",
-              "description": "`true` if the object is closed (definition of closed may depend on type)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closedAt",
-              "description": "Identifies the date and time when the object was closed.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "comments",
-              "description": "A list of comments associated with the Issue.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "IssueCommentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdViaEmail",
-              "description": "Check if this comment was created via an email reply.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "editor",
-              "description": "The actor who edited the comment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
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-                  "description": "Returns the first _n_ elements from the list.",
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-                  "description": "Returns the last _n_ elements from the list.",
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-                    "name": "Int",
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-                "name": null,
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-              "name": "url",
-              "description": "The HTTP URL for this issue",
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-                "name": null,
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-                  "description": "Returns the elements in the list that come after the specified cursor.",
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-                    "name": "Int",
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-                  "description": "Returns the last _n_ elements from the list.",
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-                    "name": "Int",
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-              "deprecationReason": null
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-              "description": "Check if the current viewer can update this object.",
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-                "kind": "NON_NULL",
-                "name": null,
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-                  "kind": "SCALAR",
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-                "kind": "NON_NULL",
-                "name": null,
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-              "kind": "INTERFACE",
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-        },
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-              },
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-                "ofType": {
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-              },
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-            },
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-                "kind": "NON_NULL",
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-              "deprecationReason": null
-            },
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-                "name": null,
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-                  "ofType": null
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-              "description": "The repository associated with this pull request's base Ref.",
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-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "body",
-              "description": "The body as Markdown.",
-              "args": [],
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyHTML",
-              "description": "The body rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyText",
-              "description": "The body rendered to text.",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "changedFiles",
-              "description": "The number of changed files in this pull request.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "closed",
-              "description": "`true` if the pull request is closed",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "comments",
-              "description": "A list of comments associated with the pull request.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
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-                  "type": {
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-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
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-                    "name": "Int",
-                    "ofType": null
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-                "name": null,
-                "ofType": {
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-                  "name": "IssueCommentConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commits",
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-                  "name": "after",
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-                  "type": {
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-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
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-                    "name": "String",
-                    "ofType": null
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-                  "name": "first",
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-                    "name": "Int",
-                    "ofType": null
-                  },
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-                    "ofType": null
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-                "name": null,
-                "ofType": {
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-                  "name": "PullRequestCommitConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdViaEmail",
-              "description": "Check if this comment was created via an email reply.",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deletions",
-              "description": "The number of deletions in this pull request.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "editor",
-              "description": "The actor who edited this pull request's body.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "files",
-              "description": "Lists the files changed within this pull request.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
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-                "name": "PullRequestChangedFileConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headRef",
-              "description": "Identifies the head Ref associated with the pull request.",
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-              "type": {
-                "kind": "OBJECT",
-                "name": "Ref",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headRefName",
-              "description": "Identifies the name of the head Ref associated with the pull request, even if the ref has been deleted.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headRefOid",
-              "description": "Identifies the oid of the head ref associated with the pull request, even if the ref has been deleted.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headRepository",
-              "description": "The repository associated with this pull request's head Ref.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "headRepositoryOwner",
-              "description": "The owner of the repository associated with this pull request's head Ref.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "RepositoryOwner",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "includesCreatedEdit",
-              "description": "Check if this comment was edited and includes an edit with the creation data",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isCrossRepository",
-              "description": "The head and base repositories are different.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "labels",
-              "description": "A list of labels associated with the object.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "LabelConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lastEditedAt",
-              "description": "The moment the editor made the last edit",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "locked",
-              "description": "`true` if the pull request is locked",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "maintainerCanModify",
-              "description": "Indicates whether maintainers can modify the pull request.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mergeCommit",
-              "description": "The commit that was created when this pull request was merged.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Commit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mergeable",
-              "description": "Whether or not the pull request can be merged based on the existence of merge conflicts.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "MergeableState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "merged",
-              "description": "Whether or not the pull request was merged.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mergedAt",
-              "description": "The date and time that the pull request was merged.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mergedBy",
-              "description": "The actor who merged the pull request.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "milestone",
-              "description": "Identifies the milestone associated with the pull request.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Milestone",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "number",
-              "description": "Identifies the pull request number.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "participants",
-              "description": "A list of Users that are participating in the Pull Request conversation.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "permalink",
-              "description": "The permalink to the pull request.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "potentialMergeCommit",
-              "description": "The commit that GitHub automatically generated to test if this pull request could be merged. This field will not return a value if the pull request is merged, or if the test merge commit is still being generated. See the `mergeable` field for more details on the mergeability of the pull request.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Commit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectCards",
-              "description": "List of project cards associated with this pull request.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "archivedStates",
-                  "description": "A list of archived states to filter the cards by",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "ProjectCardArchivedState",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"ARCHIVED\", \"NOT_ARCHIVED\"]"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectCardConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "publishedAt",
-              "description": "Identifies when the comment was published at.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reactionGroups",
-              "description": "A list of reactions grouped by content left on the subject.",
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-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "logoUrl",
-              "description": "A URL pointing to the app's logo.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size of the resulting image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the app.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "slug",
-              "description": "A slug based on the name of the app for use in URLs.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The URL to the app's homepage.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "MarketplaceListing",
-          "description": "A listing in the GitHub integration marketplace.",
-          "fields": [
-            {
-              "name": "app",
-              "description": "The GitHub App this listing represents.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "App",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "companyUrl",
-              "description": "URL to the listing owner's company site.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "configurationResourcePath",
-              "description": "The HTTP path for configuring access to the listing's integration or OAuth app",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "configurationUrl",
-              "description": "The HTTP URL for configuring access to the listing's integration or OAuth app",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "documentationUrl",
-              "description": "URL to the listing's documentation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "extendedDescription",
-              "description": "The listing's detailed description.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "extendedDescriptionHTML",
-              "description": "The listing's detailed description rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fullDescription",
-              "description": "The listing's introductory description.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fullDescriptionHTML",
-              "description": "The listing's introductory description rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasApprovalBeenRequested",
-              "description": "Whether this listing has been submitted for review from GitHub for approval to be displayed in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasPublishedFreeTrialPlans",
-              "description": "Does this listing have any plans with a free trial?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasTermsOfService",
-              "description": "Does this listing have a terms of service link?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "howItWorks",
-              "description": "A technical description of how this app works with GitHub.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "howItWorksHTML",
-              "description": "The listing's technical description rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "installationUrl",
-              "description": "URL to install the product to the viewer's account or organization.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "installedForViewer",
-              "description": "Whether this listing's app has been installed for the current viewer",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isApproved",
-              "description": "Whether this listing has been approved for display in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isDelisted",
-              "description": "Whether this listing has been removed from the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isDraft",
-              "description": "Whether this listing is still an editable draft that has not been submitted for review and is not publicly visible in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isPaid",
-              "description": "Whether the product this listing represents is available as part of a paid plan.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isPublic",
-              "description": "Whether this listing has been approved for display in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isRejected",
-              "description": "Whether this listing has been rejected by GitHub for display in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isUnverified",
-              "description": "Whether this listing has been approved for unverified display in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isUnverifiedPending",
-              "description": "Whether this draft listing has been submitted for review for approval to be unverified in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isVerificationPendingFromDraft",
-              "description": "Whether this draft listing has been submitted for review from GitHub for approval to be verified in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isVerificationPendingFromUnverified",
-              "description": "Whether this unverified listing has been submitted for review from GitHub for approval to be verified in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isVerified",
-              "description": "Whether this listing has been approved for verified display in the Marketplace.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "logoBackgroundColor",
-              "description": "The hex color code, without the leading '#', for the logo background.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "logoUrl",
-              "description": "URL for the listing's logo image.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size in pixels of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "400"
-                }
-              ],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The listing's full name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "normalizedShortDescription",
-              "description": "The listing's very short description without a trailing period or ampersands.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pricingUrl",
-              "description": "URL to the listing's detailed pricing.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "primaryCategory",
-              "description": "The category that best describes the listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "MarketplaceCategory",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "privacyPolicyUrl",
-              "description": "URL to the listing's privacy policy.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for the Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "screenshotUrls",
-              "description": "The URLs for the listing's screenshots.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "secondaryCategory",
-              "description": "An alternate category that describes the listing.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "MarketplaceCategory",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "shortDescription",
-              "description": "The listing's very short description.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "slug",
-              "description": "The short name of the listing used in its URL.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "statusUrl",
-              "description": "URL to the listing's status page.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "supportEmail",
-              "description": "An email address for support for this listing's app.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "supportUrl",
-              "description": "Either a URL or an email address for support for this listing's app.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "termsOfServiceUrl",
-              "description": "URL to the listing's terms of service.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for the Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanAddPlans",
-              "description": "Can the current viewer add plans for this Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanApprove",
-              "description": "Can the current viewer approve this Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanDelist",
-              "description": "Can the current viewer delist this Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanEdit",
-              "description": "Can the current viewer edit this Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanEditCategories",
-              "description": "Can the current viewer edit the primary and secondary category of this\nMarketplace listing.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanEditPlans",
-              "description": "Can the current viewer edit the plans for this Marketplace listing.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanRedraft",
-              "description": "Can the current viewer return this Marketplace listing to draft state\nso it becomes editable again.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanReject",
-              "description": "Can the current viewer reject this Marketplace listing by returning it to\nan editable draft state or rejecting it entirely.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanRequestApproval",
-              "description": "Can the current viewer request this listing be reviewed for display in\nthe Marketplace as verified.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerHasPurchased",
-              "description": "Indicates whether the current user has an active subscription to this Marketplace listing.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerHasPurchasedForAllOrganizations",
-              "description": "Indicates if the current user has purchased a subscription to this Marketplace listing\nfor all of the organizations the user owns.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerIsListingAdmin",
-              "description": "Does the current viewer role allow them to administer this Marketplace listing.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Organization",
-          "description": "An account on GitHub, with one or more owners, that has repositories, members and teams.",
-          "fields": [
-            {
-              "name": "avatarUrl",
-              "description": "A URL pointing to the organization's public avatar.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": "The organization's public profile description.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "email",
-              "description": "The organization's public email.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isVerified",
-              "description": "Whether the organization has verified its profile email and website.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "location",
-              "description": "The organization's public profile location.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "login",
-              "description": "The organization's login name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "memberStatuses",
-              "description": "Get the status messages members of this entity have set that are either public or visible only to the organization.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for user statuses returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "UserStatusOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"UPDATED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserStatusConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "members",
-              "description": "A list of users who are members of this organization.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": true,
-              "deprecationReason": "The `members` field is deprecated and will be removed soon. Use `Organization.membersWithRole` instead. Removal on 2019-04-01 UTC."
-            },
-            {
-              "name": "membersWithRole",
-              "description": "A list of users who are members of this organization.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "OrganizationMemberConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The organization's public profile name.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "newTeamResourcePath",
-              "description": "The HTTP path creating a new team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "newTeamUrl",
-              "description": "The HTTP URL creating a new team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organizationBillingEmail",
-              "description": "The billing email for the organization.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pendingMembers",
-              "description": "A list of users who have been invited to join this organization.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pinnedRepositories",
-              "description": "A list of repositories this user has pinned to their profile",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "Find project by number.",
-              "args": [
-                {
-                  "name": "number",
-                  "description": "The project number to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projects",
-              "description": "A list of projects under the owner.",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for projects returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ProjectOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "search",
-                  "description": "Query to search projects by, currently only searching by name.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "states",
-                  "description": "A list of states to filter the projects by.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "ENUM",
-                        "name": "ProjectState",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ProjectConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsResourcePath",
-              "description": "The HTTP path listing organization's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectsUrl",
-              "description": "The HTTP URL listing organization's projects",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositories",
-              "description": "A list of repositories that the user owns.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "isFork",
-                  "description": "If non-null, filters repositories according to whether they are forks of another repository",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "Find Repository.",
-              "args": [
-                {
-                  "name": "name",
-                  "description": "Name of Repository to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "requiresTwoFactorAuthentication",
-              "description": "When true the organization requires all members, billing managers, and outside collaborators to enable two-factor authentication.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this organization.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "samlIdentityProvider",
-              "description": "The Organization's SAML Identity Providers",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "OrganizationIdentityProvider",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "team",
-              "description": "Find an organization's team by its slug.",
-              "args": [
-                {
-                  "name": "slug",
-                  "description": "The name or slug of the team to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Team",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "teams",
-              "description": "A list of teams in this organization.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters teams according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "TeamPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "role",
-                  "description": "If non-null, filters teams according to whether the viewer is an admin or member on team",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "TeamRole",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "query",
-                  "description": "If non-null, filters teams with query on team name and team slug",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "userLogins",
-                  "description": "User logins to filter by",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for teams returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "TeamOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "ldapMapped",
-                  "description": "If true, filters teams that are mapped to an LDAP Group (Enterprise only)",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "rootTeamsOnly",
-                  "description": "If true, restrict to only root teams",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "teamsResourcePath",
-              "description": "The HTTP path listing organization's teams",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "teamsUrl",
-              "description": "The HTTP URL listing organization's teams",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this organization.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanAdminister",
-              "description": "Organization is adminable by the viewer.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateProjects",
-              "description": "Can the current viewer create new projects on this owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateRepositories",
-              "description": "Viewer can create repositories on this organization",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanCreateTeams",
-              "description": "Viewer can create teams on this organization.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerIsAMember",
-              "description": "Viewer is an active member of this organization.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "websiteUrl",
-              "description": "The organization's public profile URL.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Actor",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RegistryPackageOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RegistryPackageSearch",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "ProjectOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RepositoryOwner",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "UniformResourceLocatable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "MemberStatusable",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "RegistryPackageSearch",
-          "description": "Represents an interface to search packages on an object.",
-          "fields": [
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Organization",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "User",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "RepositoryOwner",
-          "description": "Represents an owner of a Repository.",
-          "fields": [
-            {
-              "name": "avatarUrl",
-              "description": "A URL pointing to the owner's public avatar.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "login",
-              "description": "The username used to login.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pinnedRepositories",
-              "description": "A list of repositories this user has pinned to their profile",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositories",
-              "description": "A list of repositories that the user owns.",
-              "args": [
-                {
-                  "name": "privacy",
-                  "description": "If non-null, filters repositories according to privacy",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "RepositoryPrivacy",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for repositories returned from the connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "RepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "affiliations",
-                  "description": "Array of viewer's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the current viewer owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "ownerAffiliations",
-                  "description": "Array of owner's affiliation options for repositories returned from the connection. For example, OWNER will include only repositories that the organization or user being viewed owns.",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "RepositoryAffiliation",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": "[\"OWNER\", \"COLLABORATOR\"]"
-                },
-                {
-                  "name": "isLocked",
-                  "description": "If non-null, filters repositories according to whether they have been locked",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "isFork",
-                  "description": "If non-null, filters repositories according to whether they are forks of another repository",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "Find Repository.",
-              "args": [
-                {
-                  "name": "name",
-                  "description": "Name of Repository to find.",
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP URL for the owner.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
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-                "name": null,
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-                "name": null,
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-                "name": null,
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-                "name": null,
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-                "name": null,
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-            },
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-              "isDeprecated": false,
-              "deprecationReason": null
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-              "deprecationReason": null
-            },
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-              "deprecationReason": null
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-              "name": "COLLABORATOR",
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-              "deprecationReason": null
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-              "isDeprecated": false,
-              "deprecationReason": null
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-                "name": null,
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-              },
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-              "deprecationReason": null
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-              "name": "user",
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-          ],
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-                "ofType": {
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-              "deprecationReason": null
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-                "name": "String",
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-              "isDeprecated": false,
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-                "ofType": {
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-              "name": "name",
-              "description": "The gist name.",
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
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-              "name": "owner",
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-                "name": "Int",
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-              "deprecationReason": null
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-              "deprecationReason": null
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-                "ofType": {
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-              "deprecationReason": null
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-                "name": null,
-                "ofType": {
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
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-                "name": "String",
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-                "name": "DateTime",
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-                "ofType": {
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-              "deprecationReason": null
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-                  "name": "after",
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-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
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-                  "name": "last",
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-                    "name": "Int",
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanDelete",
-              "description": "Check if the current viewer can delete this object.",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "viewerCanMinimize",
-              "description": "Check if the current viewer can minimize this object.",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-          "interfaces": [
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-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ExternalIdentitySamlAttributes",
-          "description": "SAML attributes for the External Identity",
-          "fields": [
-            {
-              "name": "nameId",
-              "description": "The NameID of the SAML identity",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ExternalIdentityScimAttributes",
-          "description": "SCIM attributes for the External Identity",
-          "fields": [
-            {
-              "name": "username",
-              "description": "The userName of the SCIM identity",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "OrganizationInvitation",
-          "description": "An Invitation for a user to an organization.",
-          "fields": [
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "email",
-              "description": "The email address of the user invited to the organization.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "invitationType",
-              "description": "The type of invitation that was sent (e.g. email, user).",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "OrganizationInvitationType",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "invitee",
-              "description": "The user who was invited to the organization.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "inviter",
-              "description": "The user who created the invitation.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organization",
-              "description": "The organization the invite is for",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Organization",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "role",
-              "description": "The user's pending role in the organization (e.g. member, owner).",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "OrganizationInvitationRole",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "OrganizationInvitationType",
-          "description": "The possible organization invitation types.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "USER",
-              "description": "The invitation was to an existing user.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "EMAIL",
-              "description": "The invitation was to an email address.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "OrganizationInvitationRole",
-          "description": "The possible organization invitation roles.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "DIRECT_MEMBER",
-              "description": "The user is invited to be a direct member of the organization.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ADMIN",
-              "description": "The user is invited to be an admin of the organization.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "BILLING_MANAGER",
-              "description": "The user is invited to be a billing manager of the organization.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REINSTATE",
-              "description": "The user's previous role will be reinstated.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamConnection",
-          "description": "The connection type for Team.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Team",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Team",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Team",
-          "description": "A team of users in an organization.",
-          "fields": [
-            {
-              "name": "ancestors",
-              "description": "A list of teams that are ancestors of this team.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "avatarUrl",
-              "description": "A URL pointing to the team's avatar.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size in pixels of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "400"
-                }
-              ],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "childTeams",
-              "description": "List of child teams belonging to this team",
-              "args": [
-                {
-                  "name": "orderBy",
-                  "description": "Order for connection",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "TeamOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "userLogins",
-                  "description": "User logins to filter by",
-                  "type": {
-                    "kind": "LIST",
-                    "name": null,
-                    "ofType": {
-                      "kind": "NON_NULL",
-                      "name": null,
-                      "ofType": {
-                        "kind": "SCALAR",
-                        "name": "String",
-                        "ofType": null
-                      }
-                    }
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "immediateOnly",
-                  "description": "Whether to list immediate child teams or all descendant child teams.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "true"
-                },
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "combinedSlug",
-              "description": "The slug corresponding to the organization and team.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": "The description of the team.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "editTeamResourcePath",
-              "description": "The HTTP path for editing this team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "editTeamUrl",
-              "description": "The HTTP URL for editing this team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "invitations",
-              "description": "A list of pending invitations for users to this team",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "OrganizationInvitationConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "memberStatuses",
-              "description": "Get the status messages members of this entity have set that are either public or visible only to the organization.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for user statuses returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "UserStatusOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"UPDATED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "UserStatusConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "members",
-              "description": "A list of users who are members of this team.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "query",
-                  "description": "The search string to look for.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "membership",
-                  "description": "Filter by membership type",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "TeamMembershipType",
-                    "ofType": null
-                  },
-                  "defaultValue": "ALL"
-                },
-                {
-                  "name": "role",
-                  "description": "Filter by team member role",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "TeamMemberRole",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "TeamMemberOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamMemberConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "membersResourcePath",
-              "description": "The HTTP path for the team' members",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "membersUrl",
-              "description": "The HTTP URL for the team' members",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the team.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "newTeamResourcePath",
-              "description": "The HTTP path creating a new team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "newTeamUrl",
-              "description": "The HTTP URL creating a new team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "organization",
-              "description": "The organization that owns this team.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Organization",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "parentTeam",
-              "description": "The parent team of the team.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Team",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "privacy",
-              "description": "The level of privacy the team has.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "TeamPrivacy",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositories",
-              "description": "A list of repositories this team has access to.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "query",
-                  "description": "The search string to look for.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Order for the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "TeamRepositoryOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamRepositoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoriesResourcePath",
-              "description": "The HTTP path for this team's repositories",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoriesUrl",
-              "description": "The HTTP URL for this team's repositories",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "slug",
-              "description": "The slug corresponding to the team.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "teamsResourcePath",
-              "description": "The HTTP path for this team's teams",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "teamsUrl",
-              "description": "The HTTP URL for this team's teams",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this team",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanAdminister",
-              "description": "Team is adminable by the viewer.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanSubscribe",
-              "description": "Check if the viewer is able to change their subscription status for the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerSubscription",
-              "description": "Identifies if the viewer is watching, not watching, or ignoring the subscribable entity.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "SubscriptionState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Subscribable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "MemberStatusable",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INTERFACE",
-          "name": "Subscribable",
-          "description": "Entities that can be subscribed to for web and email notifications.",
-          "fields": [
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanSubscribe",
-              "description": "Check if the viewer is able to change their subscription status for the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerSubscription",
-              "description": "Identifies if the viewer is watching, not watching, or ignoring the subscribable entity.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "SubscriptionState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "Commit",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Issue",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PullRequest",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Repository",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "Team",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "ENUM",
-          "name": "SubscriptionState",
-          "description": "The possible states of a subscription.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "UNSUBSCRIBED",
-              "description": "The User is only notified when participating or @mentioned.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUBSCRIBED",
-              "description": "The User is notified of all conversations.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "IGNORED",
-              "description": "The User is never notified.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "TeamPrivacy",
-          "description": "The possible team privacy values.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "SECRET",
-              "description": "A secret team can only be seen by its members.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "VISIBLE",
-              "description": "A visible team can be seen and @mentioned by every member of the organization.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamMemberConnection",
-          "description": "The connection type for User.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamMemberEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamMemberEdge",
-          "description": "Represents a user who is a member of a team.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "memberAccessResourcePath",
-              "description": "The HTTP path to the organization's member access page.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "memberAccessUrl",
-              "description": "The HTTP URL to the organization's member access page.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "role",
-              "description": "The role the member has on the team.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "TeamMemberRole",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "TeamMemberRole",
-          "description": "The possible team member roles; either 'maintainer' or 'member'.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "MAINTAINER",
-              "description": "A team maintainer has permission to add and remove team members.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MEMBER",
-              "description": "A team member has no administrative permissions on the team.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "TeamMembershipType",
-          "description": "Defines which types of team members are included in the returned list. Can be one of IMMEDIATE, CHILD_TEAM or ALL.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "IMMEDIATE",
-              "description": "Includes only immediate members of the team.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CHILD_TEAM",
-              "description": "Includes only child team members for the team.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ALL",
-              "description": "Includes immediate and child team members for the team.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "TeamMemberOrder",
-          "description": "Ordering options for team member connections",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "field",
-              "description": "The field to order team members by.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "TeamMemberOrderField",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "direction",
-              "description": "The ordering direction.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "OrderDirection",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "TeamMemberOrderField",
-          "description": "Properties by which team member connections can be ordered.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "LOGIN",
-              "description": "Order team members by login",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CREATED_AT",
-              "description": "Order team members by creation time",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamRepositoryConnection",
-          "description": "The connection type for Repository.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "TeamRepositoryEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TeamRepositoryEdge",
-          "description": "Represents a team repository.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "permission",
-              "description": "The permission level the team has on the repository",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-          "name": "ReactionEdge",
-          "description": "An edge in a connection.",
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-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
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-              "deprecationReason": null
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-              "description": "The item at the end of the edge.",
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-                "name": "Reaction",
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-              "deprecationReason": null
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-          "name": "Reaction",
-          "description": "An emoji reaction to a particular piece of content.",
-          "fields": [
-            {
-              "name": "content",
-              "description": "Identifies the emoji reaction.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "ReactionContent",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
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-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "name": "id",
-              "description": null,
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-                "name": null,
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-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reactable",
-              "description": "The reactable piece of content",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "INTERFACE",
-                  "name": "Reactable",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "user",
-              "description": "Identifies the user who created this reaction.",
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-                "name": "User",
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-              "name": "field",
-              "description": "The field in which to order reactions by.",
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-                "name": null,
-                "ofType": {
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-                  "name": "ReactionOrderField",
-                  "ofType": null
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-              },
-              "defaultValue": null
-            },
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-              "name": "direction",
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-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "OrderDirection",
-                  "ofType": null
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-              "name": "CREATED_AT",
-              "description": "Allows ordering a list of reactions by when they were created.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-        },
-        {
-          "kind": "OBJECT",
-          "name": "PublicKey",
-          "description": "A user's public key.",
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-              "name": "accessedAt",
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-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "fingerprint",
-              "description": "The fingerprint for this PublicKey",
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-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-              "name": "id",
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-                "name": null,
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-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isReadOnly",
-              "description": "Whether this PublicKey is read-only or not",
-              "args": [],
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "key",
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-                "name": null,
-                "ofType": {
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-                  "name": "String",
-                  "ofType": null
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-              "deprecationReason": null
-            },
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-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
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-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
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-              },
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-              "deprecationReason": null
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-              "name": "NONE",
-              "description": "No access",
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-              "deprecationReason": null
-            },
-            {
-              "name": "READ",
-              "description": "Can read repos by default",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "WRITE",
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-              "deprecationReason": null
-            },
-            {
-              "name": "ADMIN",
-              "description": "Can read, write, and administrate repos by default",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-        },
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-          "name": "Date",
-          "description": "An ISO-8601 encoded date string.",
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-          "enumValues": null,
-          "possibleTypes": null
-        },
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-              "name": "edges",
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-                "name": null,
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-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
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-                "name": null,
-                "ofType": {
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-                  "name": "PageInfo",
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
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-                "kind": "NON_NULL",
-                "name": null,
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-                  "name": "Int",
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-                "kind": "NON_NULL",
-                "name": null,
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-            {
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-            {
-              "name": "role",
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-                "name": "OrganizationMemberRole",
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-              },
-              "isDeprecated": false,
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-            },
-            {
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-            }
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-        },
-        {
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-            },
-            {
-              "name": "MEMBER",
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-                  "name": "GistEdge",
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-              },
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-            },
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-              "name": "nodes",
-              "description": "A list of nodes.",
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-              },
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-            },
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
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-                }
-              },
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-              "deprecationReason": null
-            },
-            {
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-              "description": "Identifies the total count of items in the connection.",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-          "name": "GistEdge",
-          "description": "An edge in a connection.",
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-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
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-              },
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-                "name": "Gist",
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-          "name": "GistPrivacy",
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-              "name": "PUBLIC",
-              "description": "Public",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SECRET",
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-            },
-            {
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-                "name": null,
-                "ofType": {
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-                  "name": "GistOrderField",
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-              "name": "direction",
-              "description": "The ordering direction.",
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-                "name": null,
-                "ofType": {
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-                  "ofType": null
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-          "fields": null,
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-              "description": "Order gists by creation time",
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-              "deprecationReason": null
-            },
-            {
-              "name": "UPDATED_AT",
-              "description": "Order gists by update time",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PUSHED_AT",
-              "description": "Order gists by push time",
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-              "deprecationReason": null
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-              "deprecationReason": null
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-              "type": {
-                "kind": "OBJECT",
-                "name": "RepositoryInvitation",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-        },
-        {
-          "kind": "OBJECT",
-          "name": "RepositoryInvitation",
-          "description": "An invitation for a user to be added to a repository.",
-          "fields": [
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-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "invitee",
-              "description": "The user who received the invitation.",
-              "args": [],
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "inviter",
-              "description": "The user who created the invitation.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
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-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "permission",
-              "description": "The permission granted on this repository by this invitation.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-                  "name": "RepositoryPermission",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The Repository the user is invited to.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "RepositoryInfo",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
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-        },
-        {
-          "kind": "INTERFACE",
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-                "name": null,
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-              "deprecationReason": null
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-              "deprecationReason": null
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-              "deprecationReason": null
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-                "name": "DateTime",
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-              },
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-              "deprecationReason": null
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-              "deprecationReason": null
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-                  "name": "DateTime",
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-              "deprecationReason": null
-            },
-            {
-              "name": "BILLING",
-              "description": "The repository is locked due to a billing related reason.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "RENAME",
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-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MIGRATING",
-              "description": "The repository is locked due to a migration.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
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-        },
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-              "name": "body",
-              "description": "The full text of the license",
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-                "kind": "NON_NULL",
-                "name": null,
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-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "conditions",
-              "description": "The conditions set by the license",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-                    "name": "LicenseRule",
-                    "ofType": null
-                  }
-                }
-              },
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-              "deprecationReason": null
-            },
-            {
-              "name": "description",
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-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "featured",
-              "description": "Whether the license should be featured",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hidden",
-              "description": "Whether the license should be displayed in license pickers",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "implementation",
-              "description": "Instructions on how to implement the license",
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-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-                "kind": "NON_NULL",
-                "name": null,
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-                  "kind": "SCALAR",
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-                  "ofType": null
-                }
-              },
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-              "deprecationReason": null
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-              "name": "limitations",
-              "description": "The limitations set by the license",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
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-                  "name": null,
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-                    "name": "LicenseRule",
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-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The license full name specified by <https://spdx.org/licenses>",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
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-                  "ofType": null
-                }
-              },
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-              "deprecationReason": null
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-            {
-              "name": "nickname",
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-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "permissions",
-              "description": "The permissions set by the license",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
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-                    "name": "LicenseRule",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pseudoLicense",
-              "description": "Whether the license is a pseudo-license placeholder (e.g., other, no-license)",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-                  "name": "Boolean",
-                  "ofType": null
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
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-              "args": [],
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-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
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-              "deprecationReason": null
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-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
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-              "deprecationReason": null
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-        },
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-              "name": "description",
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-                "name": null,
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-              "deprecationReason": null
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-              "name": "key",
-              "description": "The machine-readable rule key",
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-                "name": null,
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-              "deprecationReason": null
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-                "kind": "NON_NULL",
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-          "enumValues": [
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-              "deprecationReason": null
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-                "ofType": null
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-              "deprecationReason": null
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-              },
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-              "deprecationReason": null
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-              "name": "committedDate",
-              "description": "The datetime when this commit was committed.",
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-                "name": null,
-                "ofType": {
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-                "ofType": {
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-                  "defaultValue": "{field:\"CREATED_AT\",direction:\"ASC\"}"
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-                  "description": "Returns the elements in the list that come after the specified cursor.",
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-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
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-                  "description": "Returns the last _n_ elements from the list.",
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-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "path",
-                  "description": "If non-null, filters history to only show commits touching files under this path.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "author",
-                  "description": "If non-null, filters history to only show commits with matching authorship.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "CommitAuthor",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "since",
-                  "description": "Allows specifying a beginning time or date for fetching commits.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "GitTimestamp",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "until",
-                  "description": "Allows specifying an ending time or date for fetching commits.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "GitTimestamp",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitHistoryConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "message",
-              "description": "The Git commit message",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageBody",
-              "description": "The Git commit message body",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageBodyHTML",
-              "description": "The commit message body rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageHeadline",
-              "description": "The Git commit message headline",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "messageHeadlineHTML",
-              "description": "The commit message headline rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "oid",
-              "description": "The Git object ID",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "parents",
-              "description": "The parents of a commit.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pushedDate",
-              "description": "The datetime when this commit was pushed.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The Repository this commit belongs to",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path for this commit",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signature",
-              "description": "Commit signing information, if present.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "GitSignature",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "status",
-              "description": "Status information for this commit",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Status",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tarballUrl",
-              "description": "Returns a URL to download a tarball archive for a repository.\nNote: For private repositories, these links are temporary and expire after five minutes.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tree",
-              "description": "Commit's root Tree",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Tree",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "treeResourcePath",
-              "description": "The HTTP path for the tree of this commit",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "treeUrl",
-              "description": "The HTTP URL for the tree of this commit",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL for this commit",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanSubscribe",
-              "description": "Check if the viewer is able to change their subscription status for the repository.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerSubscription",
-              "description": "Identifies if the viewer is watching, not watching, or ignoring the subscribable entity.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "SubscriptionState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "zipballUrl",
-              "description": "Returns a URL to download a zipball archive for a repository.\nNote: For private repositories, these links are temporary and expire after five minutes.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "GitObject",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Subscribable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "UniformResourceLocatable",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Tree",
-          "description": "Represents a Git tree.",
-          "fields": [
-            {
-              "name": "abbreviatedOid",
-              "description": "An abbreviated version of the Git object ID",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitResourcePath",
-              "description": "The HTTP path for this Git object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitUrl",
-              "description": "The HTTP URL for this Git object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "entries",
-              "description": "A list of tree entries.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "TreeEntry",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "oid",
-              "description": "The Git object ID",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The Repository the Git object belongs to",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "GitObject",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "TreeEntry",
-          "description": "Represents a Git tree entry.",
-          "fields": [
-            {
-              "name": "mode",
-              "description": "Entry file mode.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "Entry file name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "object",
-              "description": "Entry file object.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "GitObject",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "oid",
-              "description": "Entry file Git object ID.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The Repository the tree entry belongs to",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "type",
-              "description": "Entry file type.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "GitActor",
-          "description": "Represents an actor in a Git commit (ie. an author or committer).",
-          "fields": [
-            {
-              "name": "avatarUrl",
-              "description": "A URL pointing to the author's public avatar.",
-              "args": [
-                {
-                  "name": "size",
-                  "description": "The size of the resulting square image.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "date",
-              "description": "The timestamp of the Git action (authoring or committing).",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "GitTimestamp",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "email",
-              "description": "The email in the Git commit.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The name in the Git commit.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "user",
-              "description": "The GitHub user corresponding to the email field. Null if no such user exists.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "SCALAR",
-          "name": "GitTimestamp",
-          "description": "An ISO-8601 encoded date string. Unlike the DateTime type, GitTimestamp is not converted in UTC.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitConnection",
-          "description": "The connection type for Commit.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Commit",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Commit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitHistoryConnection",
-          "description": "The connection type for Commit.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Commit",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CommitAuthor",
-          "description": "Specifies an author for filtering Git commits.",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "id",
-              "description": "ID of a User to filter by. If non-null, only commits authored by this user will be returned. This field takes precedence over emails.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "emails",
-              "description": "Email addresses to filter by. Commits authored by any of the specified email addresses will be returned.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitCommentConnection",
-          "description": "The connection type for CommitComment.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitCommentEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CommitComment",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitCommentEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CommitComment",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CommitComment",
-          "description": "Represents a comment on a given Commit.",
-          "fields": [
-            {
-              "name": "author",
-              "description": "The actor who authored the comment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "authorAssociation",
-              "description": "Author's association with the subject of the comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "CommentAuthorAssociation",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "body",
-              "description": "Identifies the comment body.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyHTML",
-              "description": "Identifies the comment body rendered to HTML.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "HTML",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "bodyText",
-              "description": "The body rendered to text.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commit",
-              "description": "Identifies the commit associated with the comment, if the commit exists.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Commit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdViaEmail",
-              "description": "Check if this comment was created via an email reply.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "editor",
-              "description": "The actor who edited the comment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "includesCreatedEdit",
-              "description": "Check if this comment was edited and includes an edit with the creation data",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isMinimized",
-              "description": "Returns whether or not a comment has been minimized.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lastEditedAt",
-              "description": "The moment the editor made the last edit",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "minimizedReason",
-              "description": "Returns why the comment was minimized.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "path",
-              "description": "Identifies the file path associated with the comment.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "position",
-              "description": "Identifies the line position associated with the comment.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "publishedAt",
-              "description": "Identifies when the comment was published at.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "DateTime",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reactionGroups",
-              "description": "A list of reactions grouped by content left on the subject.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "OBJECT",
-                    "name": "ReactionGroup",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reactions",
-              "description": "A list of Reactions left on the Issue.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "content",
-                  "description": "Allows filtering Reactions by emoji.",
-                  "type": {
-                    "kind": "ENUM",
-                    "name": "ReactionContent",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Allows specifying the order in which reactions are returned.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ReactionOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ReactionConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The repository associated with this node.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resourcePath",
-              "description": "The HTTP path permalink for this commit comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "url",
-              "description": "The HTTP URL permalink for this commit comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "userContentEdits",
-              "description": "A list of edits to this content.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UserContentEditConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanDelete",
-              "description": "Check if the current viewer can delete this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanMinimize",
-              "description": "Check if the current viewer can minimize this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanReact",
-              "description": "Can user react to this subject",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCanUpdate",
-              "description": "Check if the current viewer can update this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerCannotUpdateReasons",
-              "description": "Reasons why the current viewer can not update this comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "ENUM",
-                      "name": "CommentCannotUpdateReason",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "viewerDidAuthor",
-              "description": "Did the viewer author this comment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Comment",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Deletable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Updatable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "UpdatableComment",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "Reactable",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "RepositoryNode",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "RepositoryTopicConnection",
-          "description": "The connection type for RepositoryTopic.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "RepositoryTopicEdge",
-                  "ofType": null
-                }
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-              "name": "OPEN",
-              "description": "A pull request that is still open.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CLOSED",
-              "description": "A pull request that has been closed without being merged.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MERGED",
-              "description": "A pull request that has been closed by being merged.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Blame",
-          "description": "Represents a Git blame.",
-          "fields": [
-            {
-              "name": "ranges",
-              "description": "The list of ranges from a Git blame.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "BlameRange",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "BlameRange",
-          "description": "Represents a range of information from a Git blame.",
-          "fields": [
-            {
-              "name": "age",
-              "description": "Identifies the recency of the change, from 1 (new) to 10 (old). This is calculated as a 2-quantile and determines the length of distance between the median age of all the changes in the file and the recency of the current range's change.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commit",
-              "description": "Identifies the line author",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Commit",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "endingLine",
-              "description": "The ending line for the range",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "startingLine",
-              "description": "The starting line for the range",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeploymentConnection",
-          "description": "The connection type for Deployment.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeploymentEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Deployment",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeploymentEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Deployment",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Deployment",
-          "description": "Represents triggered deployment instance.",
-          "fields": [
-            {
-              "name": "commit",
-              "description": "Identifies the commit sha of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Commit",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitOid",
-              "description": "Identifies the oid of the deployment commit, even if the commit has been deleted.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "creator",
-              "description": "Identifies the actor who triggered the deployment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "databaseId",
-              "description": "Identifies the primary key from the database.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": "The deployment description.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "environment",
-              "description": "The environment to which this deployment was made.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "latestStatus",
-              "description": "The latest status of this deployment.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "DeploymentStatus",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "payload",
-              "description": "Extra information that a deployment system might need.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ref",
-              "description": "Identifies the Ref of the deployment, if the deployment was created by ref.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Ref",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "Identifies the repository associated with the deployment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "The current state of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "ENUM",
-                "name": "DeploymentState",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "statuses",
-              "description": "A list of statuses associated with the deployment.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "DeploymentStatusConnection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "task",
-              "description": "The deployment task.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeploymentStatusConnection",
-          "description": "The connection type for DeploymentStatus.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeploymentStatusEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeploymentStatus",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeploymentStatusEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "DeploymentStatus",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeploymentStatus",
-          "description": "Describes the status of a given deployment attempt.",
-          "fields": [
-            {
-              "name": "createdAt",
-              "description": "Identifies the date and time when the object was created.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "creator",
-              "description": "Identifies the actor who triggered the deployment.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Actor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deployment",
-              "description": "Identifies the deployment associated with status.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Deployment",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "description",
-              "description": "Identifies the description of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "environmentUrl",
-              "description": "Identifies the environment URL of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "logUrl",
-              "description": "Identifies the log URL of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "URI",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "Identifies the current state of the deployment.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "DeploymentStatusState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatedAt",
-              "description": "Identifies the date and time when the object was last updated.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "DeploymentStatusState",
-          "description": "The possible states for a deployment status.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "PENDING",
-              "description": "The deployment is pending.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUCCESS",
-              "description": "The deployment was successful.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FAILURE",
-              "description": "The deployment has failed.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INACTIVE",
-              "description": "The deployment is inactive.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ERROR",
-              "description": "The deployment experienced an error.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "QUEUED",
-              "description": "The deployment is queued",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "IN_PROGRESS",
-              "description": "The deployment is in progress.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "DeploymentState",
-          "description": "The possible states in which a deployment can be.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "ABANDONED",
-              "description": "The pending deployment was not updated after 30 minutes.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ACTIVE",
-              "description": "The deployment is currently active.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DESTROYED",
-              "description": "An inactive transient deployment.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ERROR",
-              "description": "The deployment experienced an error.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FAILURE",
-              "description": "The deployment has failed.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INACTIVE",
-              "description": "The deployment is inactive.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PENDING",
-              "description": "The deployment is pending.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "QUEUED",
-              "description": "The deployment has queued",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "IN_PROGRESS",
-              "description": "The deployment is in progress.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeploymentOrder",
-          "description": "Ordering options for deployment connections",
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-              "deprecationReason": null
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-                "name": null,
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-                "name": null,
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-              "name": "release",
-              "description": "Release that the asset is associated with",
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-                  "name": "first",
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-                "name": null,
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-                "ofType": {
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-              "deprecationReason": null
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-              "description": "Check if the current viewer can update this object.",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
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-              "deprecationReason": null
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-              "name": "viewerCannotUpdateReasons",
-              "description": "Reasons why the current viewer can not update this comment.",
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-              "deprecationReason": null
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-            {
-              "name": "viewerDidAuthor",
-              "description": "Did the viewer author this comment.",
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-                "ofType": {
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-              "description": "Represents a 'labeled' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "name": "LOCKED_EVENT",
-              "description": "Represents a 'locked' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "name": "MENTIONED_EVENT",
-              "description": "Represents a 'mentioned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
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-              "name": "MILESTONED_EVENT",
-              "description": "Represents a 'milestoned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MOVED_COLUMNS_IN_PROJECT_EVENT",
-              "description": "Represents a 'moved_columns_in_project' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PINNED_EVENT",
-              "description": "Represents a 'pinned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REFERENCED_EVENT",
-              "description": "Represents a 'referenced' event on a given `ReferencedSubject`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REMOVED_FROM_PROJECT_EVENT",
-              "description": "Represents a 'removed_from_project' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "RENAMED_TITLE_EVENT",
-              "description": "Represents a 'renamed' event on a given issue or pull request",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REOPENED_EVENT",
-              "description": "Represents a 'reopened' event on any `Closable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUBSCRIBED_EVENT",
-              "description": "Represents a 'subscribed' event on a given `Subscribable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRANSFERRED_EVENT",
-              "description": "Represents a 'transferred' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNASSIGNED_EVENT",
-              "description": "Represents an 'unassigned' event on any assignable object.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNLABELED_EVENT",
-              "description": "Represents an 'unlabeled' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNLOCKED_EVENT",
-              "description": "Represents an 'unlocked' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNPINNED_EVENT",
-              "description": "Represents an 'unpinned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNSUBSCRIBED_EVENT",
-              "description": "Represents an 'unsubscribed' event on a given `Subscribable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "SuggestedReviewer",
-          "description": "A suggestion to review a pull request based on a user's commit history and review comments.",
-          "fields": [
-            {
-              "name": "isAuthor",
-              "description": "Is this suggestion based on past commits?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isCommenter",
-              "description": "Is this suggestion based on past review comments?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reviewer",
-              "description": "Identifies the user suggested to review the pull request.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "User",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "ProjectCardArchivedState",
-          "description": "The possible archived states of a project card.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "ARCHIVED",
-              "description": "A project card that is archived",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NOT_ARCHIVED",
-              "description": "A project card that is not archived",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "IssueTimelineConnection",
-          "description": "The connection type for IssueTimelineItem.",
-          "fields": [
-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "IssueTimelineItemEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "UNION",
-                  "name": "IssueTimelineItem",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
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-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "IssueTimelineItemEdge",
-          "description": "An edge in a connection.",
-          "fields": [
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-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "UNION",
-                "name": "IssueTimelineItem",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "UNION",
-          "name": "IssueTimelineItem",
-          "description": "An item in an issue timeline",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
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-              "kind": "OBJECT",
-              "name": "Commit",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "IssueComment",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "CrossReferencedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ClosedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ReopenedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "SubscribedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnsubscribedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ReferencedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "AssignedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnassignedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "LabeledEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnlabeledEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "MilestonedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "DemilestonedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "RenamedTitleEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "LockedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnlockedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "TransferredEvent",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "OBJECT",
-          "name": "IssueTimelineItemsEdge",
-          "description": "An edge in a connection.",
-          "fields": [
-            {
-              "name": "cursor",
-              "description": "A cursor for use in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "node",
-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "UNION",
-                "name": "IssueTimelineItems",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "UNION",
-          "name": "IssueTimelineItems",
-          "description": "An item in an issue timeline",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": [
-            {
-              "kind": "OBJECT",
-              "name": "IssueComment",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "CrossReferencedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "AddedToProjectEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "AssignedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ClosedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "CommentDeletedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ConvertedNoteToIssueEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "DemilestonedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "LabeledEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "LockedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "MentionedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "MilestonedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "MovedColumnsInProjectEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "PinnedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ReferencedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "RemovedFromProjectEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "RenamedTitleEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "ReopenedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "SubscribedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "TransferredEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnassignedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnlabeledEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnlockedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnpinnedEvent",
-              "ofType": null
-            },
-            {
-              "kind": "OBJECT",
-              "name": "UnsubscribedEvent",
-              "ofType": null
-            }
-          ]
-        },
-        {
-          "kind": "ENUM",
-          "name": "IssueTimelineItemsItemType",
-          "description": "The possible item types found in a timeline.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "ISSUE_COMMENT",
-              "description": "Represents a comment on an Issue.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CROSS_REFERENCED_EVENT",
-              "description": "Represents a mention made by one issue or pull request to another.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ADDED_TO_PROJECT_EVENT",
-              "description": "Represents a 'added_to_project' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ASSIGNED_EVENT",
-              "description": "Represents an 'assigned' event on any assignable object.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CLOSED_EVENT",
-              "description": "Represents a 'closed' event on any `Closable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "COMMENT_DELETED_EVENT",
-              "description": "Represents a 'comment_deleted' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "CONVERTED_NOTE_TO_ISSUE_EVENT",
-              "description": "Represents a 'converted_note_to_issue' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DEMILESTONED_EVENT",
-              "description": "Represents a 'demilestoned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "LABELED_EVENT",
-              "description": "Represents a 'labeled' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "LOCKED_EVENT",
-              "description": "Represents a 'locked' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MENTIONED_EVENT",
-              "description": "Represents a 'mentioned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MILESTONED_EVENT",
-              "description": "Represents a 'milestoned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MOVED_COLUMNS_IN_PROJECT_EVENT",
-              "description": "Represents a 'moved_columns_in_project' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PINNED_EVENT",
-              "description": "Represents a 'pinned' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REFERENCED_EVENT",
-              "description": "Represents a 'referenced' event on a given `ReferencedSubject`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REMOVED_FROM_PROJECT_EVENT",
-              "description": "Represents a 'removed_from_project' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "RENAMED_TITLE_EVENT",
-              "description": "Represents a 'renamed' event on a given issue or pull request",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REOPENED_EVENT",
-              "description": "Represents a 'reopened' event on any `Closable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUBSCRIBED_EVENT",
-              "description": "Represents a 'subscribed' event on a given `Subscribable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TRANSFERRED_EVENT",
-              "description": "Represents a 'transferred' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNASSIGNED_EVENT",
-              "description": "Represents an 'unassigned' event on any assignable object.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNLABELED_EVENT",
-              "description": "Represents an 'unlabeled' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNLOCKED_EVENT",
-              "description": "Represents an 'unlocked' event on a given issue or pull request.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNPINNED_EVENT",
-              "description": "Represents an 'unpinned' event on a given issue or pull request.",
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-              "deprecationReason": null
-            },
-            {
-              "name": "UNSUBSCRIBED_EVENT",
-              "description": "Represents an 'unsubscribed' event on a given `Subscribable`.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "CollaboratorAffiliation",
-          "description": "Collaborators affiliation level with a subject.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "OUTSIDE",
-              "description": "All outside collaborators of an organization-owned subject.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DIRECT",
-              "description": "All collaborators with permissions to an organization-owned subject, regardless of organization membership status.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ALL",
-              "description": "All collaborators the authenticated user can see.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeployKeyConnection",
-          "description": "The connection type for DeployKey.",
-          "fields": [
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-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeployKeyEdge",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "nodes",
-              "description": "A list of nodes.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "DeployKey",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pageInfo",
-              "description": "Information to aid in pagination.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "PageInfo",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCount",
-              "description": "Identifies the total count of items in the connection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "LOW",
-              "description": "Low.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MODERATE",
-              "description": "Moderate.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "HIGH",
-              "description": "High.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "name": "CRITICAL",
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-              "isDeprecated": false,
-              "deprecationReason": null
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-          ],
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-        {
-          "kind": "OBJECT",
-          "name": "SecurityAdvisoryIdentifier",
-          "description": "A GitHub Security Advisory Identifier",
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-              "name": "type",
-              "description": "The identifier type, e.g. GHSA, CVE",
-              "args": [],
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-                "kind": "NON_NULL",
-                "name": null,
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-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
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-          "kind": "OBJECT",
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-              "name": "url",
-              "description": "A publicly accessible reference",
-              "args": [],
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-                "kind": "NON_NULL",
-                "name": null,
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-                  "kind": "SCALAR",
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-          "kind": "OBJECT",
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-          "description": "The connection type for SecurityVulnerability.",
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-            {
-              "name": "edges",
-              "description": "A list of edges.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
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-                  "kind": "OBJECT",
-                  "name": "SecurityVulnerabilityEdge",
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-                "kind": "NON_NULL",
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-                "kind": "NON_NULL",
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-                  "kind": "SCALAR",
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-              "args": [],
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-                "kind": "NON_NULL",
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-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
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-              "deprecationReason": null
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-        },
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-          "fields": [
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-              "name": "advisory",
-              "description": "The Advisory associated with this Vulnerability",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "SecurityAdvisory",
-                  "ofType": null
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "firstPatchedVersion",
-              "description": "The first version containing a fix for the vulnerability",
-              "args": [],
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-                "kind": "OBJECT",
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "package",
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-                "kind": "NON_NULL",
-                "name": null,
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-              },
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-              "deprecationReason": null
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-                "kind": "NON_NULL",
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-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "vulnerableVersionRange",
-              "description": "A string that describes the vulnerable package versions.\nThis string follows a basic syntax with a few forms.\n+ `= 0.2.0` denotes a single vulnerable version.\n+ `<= 1.0.8` denotes a version range up to and including the specified version\n+ `< 0.1.11` denotes a version range up to, but excluding, the specified version\n+ `>= 4.3.0, < 4.3.5` denotes a version range with a known minimum and maximum version.\n+ `>= 0.0.1` denotes a version range with a known minimum, but no known maximum\n",
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-                "kind": "NON_NULL",
-                "name": null,
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-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-              "name": "name",
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
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-          "inputFields": null,
-          "interfaces": null,
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-              "name": "RUBYGEMS",
-              "description": "Ruby gems hosted at RubyGems.org",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NPM",
-              "description": "JavaScript packages hosted at npmjs.com",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PIP",
-              "description": "Python packages hosted at PyPI.org",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MAVEN",
-              "description": "Java artifacts hosted at the Maven central repository",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NUGET",
-              "description": ".NET packages hosted at the NuGet Gallery",
-              "isDeprecated": false,
-              "deprecationReason": null
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-          ],
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-          "description": "Ordering options for security vulnerability connections",
-          "fields": null,
-          "inputFields": [
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-              "name": "field",
-              "description": "The field to order security vulnerabilities by.",
-              "type": {
-                "kind": "NON_NULL",
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-                "ofType": {
-                  "kind": "ENUM",
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-            },
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-              "type": {
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-                "name": null,
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-                  "kind": "ENUM",
-                  "name": "OrderDirection",
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-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "UPDATED_AT",
-              "description": "Order vulnerability by update time",
-              "isDeprecated": false,
-              "deprecationReason": null
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-          "description": "Git SSH string",
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-              "args": [],
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-                "kind": "LIST",
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-                "ofType": {
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-                  "name": "TopicEdge",
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-              "deprecationReason": null
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-            {
-              "name": "nodes",
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-                "name": null,
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-                  "name": "Topic",
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-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
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-              "type": {
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-                "name": null,
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-            {
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-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
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-              "type": {
-                "kind": "NON_NULL",
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-                  "name": "String",
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-              "isDeprecated": false,
-              "deprecationReason": null
-            },
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-              "description": "The item at the end of the edge.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
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-                "ofType": null
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-        },
-        {
-          "kind": "OBJECT",
-          "name": "ContributionsCollection",
-          "description": "A contributions collection aggregates contributions such as opened issues and commits created by a user.",
-          "fields": [
-            {
-              "name": "commitContributionsByRepository",
-              "description": "Commit contributions made by the user, grouped by repository.",
-              "args": [
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-                  "name": "maxRepositories",
-                  "description": "How many repositories should be included.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
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-              ],
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-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "CommitContributionsByRepository",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "contributionCalendar",
-              "description": "A calendar of this user's contributions on GitHub.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "ContributionCalendar",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "contributionYears",
-              "description": "The years the user has been making contributions with the most recent year first.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "Int",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "doesEndInCurrentMonth",
-              "description": "Determine if this collection's time span ends in the current month.\n",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "earliestRestrictedContributionDate",
-              "description": "The date of the first restricted contribution the user made in this time period. Can only be non-null when the user has enabled private contribution counts.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Date",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "endedAt",
-              "description": "The ending date and time of this collection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "firstIssueContribution",
-              "description": "The first issue the user opened on GitHub. This will be null if that issue was opened outside the collection's time range and ignoreTimeRange is false. If the issue is not visible but the user has opted to show private contributions, a RestrictedContribution will be returned.",
-              "args": [
-                {
-                  "name": "ignoreTimeRange",
-                  "description": "If true, the first issue will be returned even if it was opened outside of the collection's time range.\n\n**Upcoming Change on 2019-07-01 UTC**\n**Description:** `ignoreTimeRange` will be removed. Use a `ContributionsCollection` starting sufficiently far back\n**Reason:** ignore_time_range will be removed\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "UNION",
-                "name": "CreatedIssueOrRestrictedContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "firstPullRequestContribution",
-              "description": "The first pull request the user opened on GitHub. This will be null if that pull request was opened outside the collection's time range and ignoreTimeRange is not true. If the pull request is not visible but the user has opted to show private contributions, a RestrictedContribution will be returned.",
-              "args": [
-                {
-                  "name": "ignoreTimeRange",
-                  "description": "If true, the first pull request will be returned even if it was opened outside of the collection's time range.\n\n**Upcoming Change on 2019-07-01 UTC**\n**Description:** `ignoreTimeRange` will be removed. Use a `ContributionsCollection` starting sufficiently far back\n**Reason:** ignore_time_range will be removed\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "UNION",
-                "name": "CreatedPullRequestOrRestrictedContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "firstRepositoryContribution",
-              "description": "The first repository the user created on GitHub. This will be null if that first repository was created outside the collection's time range and ignoreTimeRange is false. If the repository is not visible, then a RestrictedContribution is returned.",
-              "args": [
-                {
-                  "name": "ignoreTimeRange",
-                  "description": "If true, the first repository will be returned even if it was opened outside of the collection's time range.\n\n**Upcoming Change on 2019-07-01 UTC**\n**Description:** `ignoreTimeRange` will be removed. Use a `ContributionsCollection` starting sufficiently far back\n**Reason:** ignore_time_range will be removed\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "UNION",
-                "name": "CreatedRepositoryOrRestrictedContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasActivityInThePast",
-              "description": "Does the user have any more activity in the timeline that occurred prior to the collection's time range?",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasAnyContributions",
-              "description": "Determine if there are any contributions in this collection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "hasAnyRestrictedContributions",
-              "description": "Determine if the user made any contributions in this time frame whose details are not visible because they were made in a private repository. Can only be true if the user enabled private contribution counts.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isSingleDay",
-              "description": "Whether or not the collector's time span is all within the same day.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issueContributions",
-              "description": "A list of issues the user opened.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first issue ever be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented issue be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for contributions returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ContributionOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"OCCURRED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CreatedIssueContributionConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "issueContributionsByRepository",
-              "description": "Issue contributions made by the user, grouped by repository.",
-              "args": [
-                {
-                  "name": "maxRepositories",
-                  "description": "How many repositories should be included.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "25"
-                },
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first issue ever be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented issue be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "IssueContributionsByRepository",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "joinedGitHubContribution",
-              "description": "When the user signed up for GitHub. This will be null if that sign up date falls outside the collection's time range and ignoreTimeRange is false.",
-              "args": [
-                {
-                  "name": "ignoreTimeRange",
-                  "description": "If true, the contribution will be returned even if the user signed up outside of the collection's time range.\n\n**Upcoming Change on 2019-07-01 UTC**\n**Description:** `ignoreTimeRange` will be removed. Use a `ContributionsCollection` starting sufficiently far back\n**Reason:** ignore_time_range will be removed\n",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "JoinedGitHubContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "latestRestrictedContributionDate",
-              "description": "The date of the most recent restricted contribution the user made in this time period. Can only be non-null when the user has enabled private contribution counts.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "Date",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mostRecentCollectionWithActivity",
-              "description": "When this collection's time range does not include any activity from the user, use this\nto get a different collection from an earlier time range that does have activity.\n",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ContributionsCollection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "mostRecentCollectionWithoutActivity",
-              "description": "Returns a different contributions collection from an earlier time range than this one\nthat does not have any contributions.\n",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ContributionsCollection",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "popularIssueContribution",
-              "description": "The issue the user opened on GitHub that received the most comments in the specified\ntime frame.\n",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CreatedIssueContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "popularPullRequestContribution",
-              "description": "The pull request the user opened on GitHub that received the most comments in the\nspecified time frame.\n",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "CreatedPullRequestContribution",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestContributions",
-              "description": "Pull request contributions made by the user.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first pull request ever be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented pull request be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for contributions returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ContributionOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"OCCURRED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CreatedPullRequestContributionConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestContributionsByRepository",
-              "description": "Pull request contributions made by the user, grouped by repository.",
-              "args": [
-                {
-                  "name": "maxRepositories",
-                  "description": "How many repositories should be included.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "25"
-                },
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first pull request ever be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented pull request be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "PullRequestContributionsByRepository",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReviewContributions",
-              "description": "Pull request review contributions made by the user.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for contributions returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ContributionOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"OCCURRED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CreatedPullRequestReviewContributionConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReviewContributionsByRepository",
-              "description": "Pull request review contributions made by the user, grouped by repository.",
-              "args": [
-                {
-                  "name": "maxRepositories",
-                  "description": "How many repositories should be included.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": "25"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "OBJECT",
-                      "name": "PullRequestReviewContributionsByRepository",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repositoryContributions",
-              "description": "A list of repositories owned by the user that the user created in this time range.",
-              "args": [
-                {
-                  "name": "after",
-                  "description": "Returns the elements in the list that come after the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "before",
-                  "description": "Returns the elements in the list that come before the specified cursor.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "first",
-                  "description": "Returns the first _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "last",
-                  "description": "Returns the last _n_ elements from the list.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Int",
-                    "ofType": null
-                  },
-                  "defaultValue": null
-                },
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first repository ever be excluded from the result.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "orderBy",
-                  "description": "Ordering options for contributions returned from the connection.",
-                  "type": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ContributionOrder",
-                    "ofType": null
-                  },
-                  "defaultValue": "{field:\"OCCURRED_AT\",direction:\"DESC\"}"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "CreatedRepositoryContributionConnection",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "restrictedContributionsCount",
-              "description": "A count of contributions made by the user that the viewer cannot access. Only non-zero when the user has chosen to share their private contribution counts.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "startedAt",
-              "description": "The beginning date and time of this collection.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "DateTime",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalCommitContributions",
-              "description": "How many commits were made by the user in this time span.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalIssueContributions",
-              "description": "How many issues the user opened.",
-              "args": [
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first issue ever be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented issue be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalPullRequestContributions",
-              "description": "How many pull requests the user opened.",
-              "args": [
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first pull request ever be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented pull request be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalPullRequestReviewContributions",
-              "description": "How many pull request reviews the user left.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalRepositoriesWithContributedCommits",
-              "description": "How many different repositories the user committed to.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalRepositoriesWithContributedIssues",
-              "description": "How many different repositories the user opened issues in.",
-              "args": [
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first issue ever be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented issue be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalRepositoriesWithContributedPullRequestReviews",
-              "description": "How many different repositories the user left pull request reviews in.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "totalRepositoriesWithContributedPullRequests",
-              "description": "How many different repositories the user opened pull requests in.",
-              "args": [
-                {
-                  "name": "excludeFirst",
-                  "description": "Should the user's first pull request ever be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                },
-                {
-                  "name": "excludePopular",
-                  "description": "Should the user's most commented pull request be excluded from this count.",
-                  "type": {
-                    "kind": "SCALAR",
-                    "name": "Boolean",
-                    "ofType": null
-                  },
-                  "defaultValue": "false"
-                }
-              ],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
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-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "MoveProjectColumnPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "removeOutsideCollaborator",
-              "description": "Removes outside collaborator from all repositories in an organization.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "RemoveOutsideCollaboratorInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RemoveOutsideCollaboratorPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "removeReaction",
-              "description": "Removes a reaction from a subject.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "RemoveReactionInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RemoveReactionPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "removeStar",
-              "description": "Removes a star from a Starrable.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "RemoveStarInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RemoveStarPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reopenPullRequest",
-              "description": "Reopen a pull request.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "ReopenPullRequestInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ReopenPullRequestPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "requestReviews",
-              "description": "Set review requests on a pull request.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "RequestReviewsInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "RequestReviewsPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "resolveReviewThread",
-              "description": "Marks a review thread as resolved.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "ResolveReviewThreadInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ResolveReviewThreadPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "submitPullRequestReview",
-              "description": "Submits a pending pull request review.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "SubmitPullRequestReviewInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "SubmitPullRequestReviewPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "unlockLockable",
-              "description": "Unlock a lockable object",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UnlockLockableInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UnlockLockablePayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "unresolveReviewThread",
-              "description": "Marks a review thread as unresolved.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UnresolveReviewThreadInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UnresolveReviewThreadPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateBranchProtectionRule",
-              "description": "Create a new branch protection rule",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateBranchProtectionRuleInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateBranchProtectionRulePayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateProject",
-              "description": "Updates an existing project.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateProjectInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateProjectPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateProjectCard",
-              "description": "Updates an existing project card.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateProjectCardInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateProjectCardPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateProjectColumn",
-              "description": "Updates an existing project column.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateProjectColumnInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateProjectColumnPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatePullRequest",
-              "description": "Update a pull request",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdatePullRequestInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdatePullRequestPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatePullRequestReview",
-              "description": "Updates the body of a pull request review.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdatePullRequestReviewInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdatePullRequestReviewPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updatePullRequestReviewComment",
-              "description": "Updates a pull request review comment.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdatePullRequestReviewCommentInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdatePullRequestReviewCommentPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateSubscription",
-              "description": "Updates the state for subscribable subjects.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateSubscriptionInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateSubscriptionPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "updateTopics",
-              "description": "Replaces the repository's topics with the given topics.",
-              "args": [
-                {
-                  "name": "input",
-                  "description": null,
-                  "type": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "UpdateTopicsInput",
-                      "ofType": null
-                    }
-                  },
-                  "defaultValue": null
-                }
-              ],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UpdateTopicsPayload",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddReactionPayload",
-          "description": "Autogenerated return type of AddReaction",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reaction",
-              "description": "The reaction object.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Reaction",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "subject",
-              "description": "The reactable subject.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Reactable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddReactionInput",
-          "description": "Autogenerated input type of AddReaction",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subjectId",
-              "description": "The Node ID of the subject to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "content",
-              "description": "The name of the emoji to react with.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "ReactionContent",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "RemoveReactionPayload",
-          "description": "Autogenerated return type of RemoveReaction",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reaction",
-              "description": "The reaction object.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Reaction",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "subject",
-              "description": "The reactable subject.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Reactable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveReactionInput",
-          "description": "Autogenerated input type of RemoveReaction",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subjectId",
-              "description": "The Node ID of the subject to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "content",
-              "description": "The name of the emoji reaction to remove.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "ReactionContent",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateSubscriptionPayload",
-          "description": "Autogenerated return type of UpdateSubscription",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "subscribable",
-              "description": "The input subscribable entity.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Subscribable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateSubscriptionInput",
-          "description": "Autogenerated input type of UpdateSubscription",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subscribableId",
-              "description": "The Node ID of the subscribable object to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "state",
-              "description": "The new state of the subscription.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "SubscriptionState",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddCommentPayload",
-          "description": "Autogenerated return type of AddComment",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commentEdge",
-              "description": "The edge from the subject's comment connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "IssueCommentEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "subject",
-              "description": "The subject",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Node",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "timelineEdge",
-              "description": "The edge from the subject's timeline connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "IssueTimelineItemEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddCommentInput",
-          "description": "Autogenerated input type of AddComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subjectId",
-              "description": "The Node ID of the subject to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The contents of the comment.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "MinimizeCommentInput",
-          "description": "Autogenerated input type of MinimizeComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subjectId",
-              "description": "The Node ID of the subject to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "classifier",
-              "description": "The classification of comment",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "ReportedContentClassifiers",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "ReportedContentClassifiers",
-          "description": "The reasons a piece of content can be reported or minimized.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "SPAM",
-              "description": "A spammy piece of content",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ABUSE",
-              "description": "An abusive or harassing piece of content",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OFF_TOPIC",
-              "description": "An irrelevant piece of content",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OUTDATED",
-              "description": "An outdated piece of content",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "RESOLVED",
-              "description": "The content has been resolved",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UnminimizeCommentInput",
-          "description": "Autogenerated input type of UnminimizeComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "subjectId",
-              "description": "The Node ID of the subject to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CreateProjectPayload",
-          "description": "Autogenerated return type of CreateProject",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The new project.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CreateProjectInput",
-          "description": "Autogenerated input type of CreateProject",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "ownerId",
-              "description": "The owner ID to create the project under.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of project.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The description of project.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateProjectPayload",
-          "description": "Autogenerated return type of UpdateProject",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The updated project.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateProjectInput",
-          "description": "Autogenerated input type of UpdateProject",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectId",
-              "description": "The Project ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of project.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The description of project.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "state",
-              "description": "Whether the project is open or closed.",
-              "type": {
-                "kind": "ENUM",
-                "name": "ProjectState",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "public",
-              "description": "Whether the project is public or not.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeleteProjectPayload",
-          "description": "Autogenerated return type of DeleteProject",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "owner",
-              "description": "The repository or organization the project was removed from.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "ProjectOwner",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeleteProjectInput",
-          "description": "Autogenerated input type of DeleteProject",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectId",
-              "description": "The Project ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ImportProjectInput",
-          "description": "Autogenerated input type of ImportProject",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "ownerName",
-              "description": "The name of the Organization or User to create the Project under.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of Project.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The description of Project.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "public",
-              "description": "Whether the Project is public or not.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": "false"
-            },
-            {
-              "name": "columnImports",
-              "description": "A list of columns containing issues and pull requests.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "INPUT_OBJECT",
-                      "name": "ProjectColumnImport",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ProjectColumnImport",
-          "description": "A project column and a list of its issues and PRs.",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "columnName",
-              "description": "The name of the column.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "position",
-              "description": "The position of the column, starting from 0.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "issues",
-              "description": "A list of issues and pull requests in the column.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "INPUT_OBJECT",
-                    "name": "ProjectCardImport",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ProjectCardImport",
-          "description": "An issue or PR and its owning repository to be used in a project card.",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repository",
-              "description": "Repository name with owner (owner/repository).",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "number",
-              "description": "The issue or pull request number.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddProjectColumnPayload",
-          "description": "Autogenerated return type of AddProjectColumn",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "columnEdge",
-              "description": "The edge from the project's column connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumnEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The project",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddProjectColumnInput",
-          "description": "Autogenerated input type of AddProjectColumn",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectId",
-              "description": "The Node ID of the project.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the column.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "MoveProjectColumnPayload",
-          "description": "Autogenerated return type of MoveProjectColumn",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "columnEdge",
-              "description": "The new edge of the moved column.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumnEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "MoveProjectColumnInput",
-          "description": "Autogenerated input type of MoveProjectColumn",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "columnId",
-              "description": "The id of the column to move.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "afterColumnId",
-              "description": "Place the new column after the column with this id. Pass null to place it at the front.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateProjectColumnPayload",
-          "description": "Autogenerated return type of UpdateProjectColumn",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectColumn",
-              "description": "The updated project column.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumn",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateProjectColumnInput",
-          "description": "Autogenerated input type of UpdateProjectColumn",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectColumnId",
-              "description": "The ProjectColumn ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of project column.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeleteProjectColumnPayload",
-          "description": "Autogenerated return type of DeleteProjectColumn",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deletedColumnId",
-              "description": "The deleted column ID.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "project",
-              "description": "The project the deleted column was in.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Project",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeleteProjectColumnInput",
-          "description": "Autogenerated input type of DeleteProjectColumn",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "columnId",
-              "description": "The id of the column to delete.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddProjectCardPayload",
-          "description": "Autogenerated return type of AddProjectCard",
-          "fields": [
-            {
-              "name": "cardEdge",
-              "description": "The edge from the ProjectColumn's card connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectCardEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectColumn",
-              "description": "The ProjectColumn",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumn",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddProjectCardInput",
-          "description": "Autogenerated input type of AddProjectCard",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectColumnId",
-              "description": "The Node ID of the ProjectColumn.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "contentId",
-              "description": "The content of the card. Must be a member of the ProjectCardItem union",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "note",
-              "description": "The note on the card.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateProjectCardPayload",
-          "description": "Autogenerated return type of UpdateProjectCard",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "projectCard",
-              "description": "The updated ProjectCard.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectCard",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateProjectCardInput",
-          "description": "Autogenerated input type of UpdateProjectCard",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "projectCardId",
-              "description": "The ProjectCard ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "isArchived",
-              "description": "Whether or not the ProjectCard should be archived",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "note",
-              "description": "The note of ProjectCard.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "MoveProjectCardPayload",
-          "description": "Autogenerated return type of MoveProjectCard",
-          "fields": [
-            {
-              "name": "cardEdge",
-              "description": "The new edge of the moved card.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectCardEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "MoveProjectCardInput",
-          "description": "Autogenerated input type of MoveProjectCard",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "cardId",
-              "description": "The id of the card to move.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "columnId",
-              "description": "The id of the column to move it into.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "afterCardId",
-              "description": "Place the new card after the card with this id. Pass null to place it at the top.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeleteProjectCardPayload",
-          "description": "Autogenerated return type of DeleteProjectCard",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "column",
-              "description": "The column the deleted card was in.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "ProjectColumn",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "deletedCardId",
-              "description": "The deleted card ID.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeleteProjectCardInput",
-          "description": "Autogenerated input type of DeleteProjectCard",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "cardId",
-              "description": "The id of the card to delete.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "LockLockablePayload",
-          "description": "Autogenerated return type of LockLockable",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "lockedRecord",
-              "description": "The item that was locked.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Lockable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "LockLockableInput",
-          "description": "Autogenerated input type of LockLockable",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "lockableId",
-              "description": "ID of the issue or pull request to be locked.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "lockReason",
-              "description": "A reason for why the issue or pull request will be locked.",
-              "type": {
-                "kind": "ENUM",
-                "name": "LockReason",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UnlockLockablePayload",
-          "description": "Autogenerated return type of UnlockLockable",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "unlockedRecord",
-              "description": "The item that was unlocked.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Lockable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UnlockLockableInput",
-          "description": "Autogenerated input type of UnlockLockable",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "lockableId",
-              "description": "ID of the issue or pull request to be unlocked.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeleteIssueInput",
-          "description": "Autogenerated input type of DeleteIssue",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "issueId",
-              "description": "The ID of the issue to delete.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "PinIssueInput",
-          "description": "Autogenerated input type of PinIssue",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "issueId",
-              "description": "The ID of the issue to be pinned",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UnpinIssueInput",
-          "description": "Autogenerated input type of UnpinIssue",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "issueId",
-              "description": "The ID of the issue to be unpinned",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CreatePullRequestPayload",
-          "description": "Autogenerated return type of CreatePullRequest",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The new pull request.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CreatePullRequestInput",
-          "description": "Autogenerated input type of CreatePullRequest",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repositoryId",
-              "description": "The Node ID of the repository.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "baseRefName",
-              "description": "The name of the branch you want your changes pulled into. This should be an existing branch\non the current repository. You cannot update the base branch on a pull request to point\nto another repository.\n",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "headRefName",
-              "description": "The name of the branch where your changes are implemented. For cross-repository pull requests\nin the same network, namespace `head_ref_name` with a user like this: `username:branch`.\n",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "title",
-              "description": "The title of the pull request.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The contents of the pull request.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "maintainerCanModify",
-              "description": "Indicates whether maintainers can modify the pull request.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": "true"
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdatePullRequestPayload",
-          "description": "Autogenerated return type of UpdatePullRequest",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The updated pull request.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdatePullRequestInput",
-          "description": "Autogenerated input type of UpdatePullRequest",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "The Node ID of the pull request.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "baseRefName",
-              "description": "The name of the branch you want your changes pulled into. This should be an existing branch\non the current repository.\n",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "title",
-              "description": "The title of the pull request.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The contents of the pull request.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "maintainerCanModify",
-              "description": "Indicates whether maintainers can modify the pull request.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ClosePullRequestPayload",
-          "description": "Autogenerated return type of ClosePullRequest",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The pull request that was closed.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ClosePullRequestInput",
-          "description": "Autogenerated input type of ClosePullRequest",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "ID of the pull request to be closed.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ReopenPullRequestPayload",
-          "description": "Autogenerated return type of ReopenPullRequest",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The pull request that was reopened.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ReopenPullRequestInput",
-          "description": "Autogenerated input type of ReopenPullRequest",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "ID of the pull request to be reopened.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "MergePullRequestPayload",
-          "description": "Autogenerated return type of MergePullRequest",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The pull request that was merged.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "MergePullRequestInput",
-          "description": "Autogenerated input type of MergePullRequest",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "ID of the pull request to be merged.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "commitHeadline",
-              "description": "Commit headline to use for the merge commit; if omitted, a default message will be used.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "commitBody",
-              "description": "Commit body to use for the merge commit; if omitted, a default message will be used",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "expectedHeadOid",
-              "description": "OID that the pull request head ref must match to allow merge; if omitted, no check is performed.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "GitObjectID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeletePullRequestReviewCommentPayload",
-          "description": "Autogenerated return type of DeletePullRequestReviewComment",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The pull request review the deleted comment belonged to.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeletePullRequestReviewCommentInput",
-          "description": "Autogenerated input type of DeletePullRequestReviewComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "id",
-              "description": "The ID of the comment to delete.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddPullRequestReviewPayload",
-          "description": "Autogenerated return type of AddPullRequestReview",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The newly created pull request review.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "reviewEdge",
-              "description": "The edge from the pull request's review connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddPullRequestReviewInput",
-          "description": "Autogenerated input type of AddPullRequestReview",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "The Node ID of the pull request to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "commitOID",
-              "description": "The commit OID the review pertains to.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "GitObjectID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The contents of the review body comment.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "event",
-              "description": "The event to perform on the pull request review.",
-              "type": {
-                "kind": "ENUM",
-                "name": "PullRequestReviewEvent",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "comments",
-              "description": "The review line comments.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "INPUT_OBJECT",
-                  "name": "DraftPullRequestReviewComment",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "PullRequestReviewEvent",
-          "description": "The possible events to perform on a pull request review.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "COMMENT",
-              "description": "Submit general feedback without explicit approval.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "APPROVE",
-              "description": "Submit feedback and approve merging these changes.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "REQUEST_CHANGES",
-              "description": "Submit feedback that must be addressed before merging.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "DISMISS",
-              "description": "Dismiss review so it now longer effects merging.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DraftPullRequestReviewComment",
-          "description": "Specifies a review comment to be left with a Pull Request Review.",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "path",
-              "description": "Path to the file being commented on.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "position",
-              "description": "Position in the file to leave a comment on.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Int",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "Body of the comment to leave.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "SubmitPullRequestReviewPayload",
-          "description": "Autogenerated return type of SubmitPullRequestReview",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The submitted pull request review.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
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-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "SubmitPullRequestReviewInput",
-          "description": "Autogenerated input type of SubmitPullRequestReview",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewId",
-              "description": "The Pull Request Review ID to submit.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "event",
-              "description": "The event to send to the Pull Request Review.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "PullRequestReviewEvent",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The text field to set on the Pull Request Review.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdatePullRequestReviewPayload",
-          "description": "Autogenerated return type of UpdatePullRequestReview",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The updated pull request review.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdatePullRequestReviewInput",
-          "description": "Autogenerated input type of UpdatePullRequestReview",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewId",
-              "description": "The Node ID of the pull request review to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The contents of the pull request review body.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DismissPullRequestReviewPayload",
-          "description": "Autogenerated return type of DismissPullRequestReview",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The dismissed pull request review.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DismissPullRequestReviewInput",
-          "description": "Autogenerated input type of DismissPullRequestReview",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewId",
-              "description": "The Node ID of the pull request review to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "message",
-              "description": "The contents of the pull request review dismissal message.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeletePullRequestReviewPayload",
-          "description": "Autogenerated return type of DeletePullRequestReview",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReview",
-              "description": "The deleted pull request review.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReview",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeletePullRequestReviewInput",
-          "description": "Autogenerated input type of DeletePullRequestReview",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewId",
-              "description": "The Node ID of the pull request review to delete.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ResolveReviewThreadPayload",
-          "description": "Autogenerated return type of ResolveReviewThread",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "thread",
-              "description": "The thread to resolve.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewThread",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ResolveReviewThreadInput",
-          "description": "Autogenerated input type of ResolveReviewThread",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "threadId",
-              "description": "The ID of the thread to resolve",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UnresolveReviewThreadPayload",
-          "description": "Autogenerated return type of UnresolveReviewThread",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "thread",
-              "description": "The thread to resolve.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewThread",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UnresolveReviewThreadInput",
-          "description": "Autogenerated input type of UnresolveReviewThread",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "threadId",
-              "description": "The ID of the thread to unresolve",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddPullRequestReviewCommentPayload",
-          "description": "Autogenerated return type of AddPullRequestReviewComment",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "comment",
-              "description": "The newly created comment.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewComment",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commentEdge",
-              "description": "The edge from the review's comment connection.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewCommentEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddPullRequestReviewCommentInput",
-          "description": "Autogenerated input type of AddPullRequestReviewComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewId",
-              "description": "The Node ID of the review to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "commitOID",
-              "description": "The SHA of the commit to comment on.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "GitObjectID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The text of the comment.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "path",
-              "description": "The relative path of the file to comment on.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "position",
-              "description": "The line index in the diff to comment on.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "inReplyTo",
-              "description": "The comment id to reply to.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdatePullRequestReviewCommentPayload",
-          "description": "Autogenerated return type of UpdatePullRequestReviewComment",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequestReviewComment",
-              "description": "The updated comment.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequestReviewComment",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdatePullRequestReviewCommentInput",
-          "description": "Autogenerated input type of UpdatePullRequestReviewComment",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestReviewCommentId",
-              "description": "The Node ID of the comment to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "body",
-              "description": "The text of the comment.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessProfileInput",
-          "description": "Autogenerated input type of UpdateBusinessProfile",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The Business ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of business.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "description",
-              "description": "The description of the business.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "websiteUrl",
-              "description": "The URL of the business's website",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "location",
-              "description": "The location of the business",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InviteBusinessAdminInput",
-          "description": "Autogenerated input type of InviteBusinessAdmin",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business to which you want to invite an administrator.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "invitee",
-              "description": "The login of a user to invite as an administrator.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "email",
-              "description": "The email of the person to invite as an administrator.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AcceptBusinessMemberInvitationInput",
-          "description": "Autogenerated input type of AcceptBusinessMemberInvitation",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "invitationId",
-              "description": "The id of the invitation being accepted",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CancelBusinessAdminInvitationInput",
-          "description": "Autogenerated input type of CancelBusinessAdminInvitation",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "invitationId",
-              "description": "The Node ID of the pending business admin invitation.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveBusinessAdminInput",
-          "description": "Autogenerated input type of RemoveBusinessAdmin",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The Business ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "login",
-              "description": "The login of the user to add as an admin.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "InviteBusinessBillingManagerInput",
-          "description": "Autogenerated input type of InviteBusinessBillingManager",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business to which you want to invite a billing manager.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "invitee",
-              "description": "The login of a user to invite as a billing manager.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "email",
-              "description": "The email of the person to invite as a billing manager.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CancelBusinessBillingManagerInvitationInput",
-          "description": "Autogenerated input type of CancelBusinessBillingManagerInvitation",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "invitationId",
-              "description": "The Node ID of the pending business billing manager invitation.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveBusinessBillingManagerInput",
-          "description": "Autogenerated input type of RemoveBusinessBillingManager",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The Business ID to update.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "login",
-              "description": "The login of the user to add as a billing manager.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "SetBusinessIdentityProviderInput",
-          "description": "Autogenerated input type of SetBusinessIdentityProvider",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set an Identity Provider.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "ssoUrl",
-              "description": "The URL endpoint for the Identity Provider's SAML SSO.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "issuer",
-              "description": "The Issuer Entity ID for the SAML Identity Provider",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "idpCertificate",
-              "description": "The x509 certificate used by the Identity Provider to sign assertions and responses.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveBusinessIdentityProviderInput",
-          "description": "Autogenerated input type of RemoveBusinessIdentityProvider",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business from which to remove the Identity Provider.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RegenerateBusinessIdentityProviderRecoveryCodesInput",
-          "description": "Autogenerated input type of RegenerateBusinessIdentityProviderRecoveryCodes",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set an Identity Provider.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessMembersCanCreateRepositoriesSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessMembersCanCreateRepositoriesSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the members can create repositories setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessAllowPrivateRepositoryForkingSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessAllowPrivateRepositoryForkingSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the allow private repository forking setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessDefaultRepositoryPermissionSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessDefaultRepositoryPermissionSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the default repository permission setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessTeamDiscussionsSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessTeamDiscussionsSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the team discussions setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessOrganizationProjectsSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessOrganizationProjectsSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the organization projects setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessRepositoryProjectsSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessRepositoryProjectsSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the repository projects setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessMembersCanChangeRepositoryVisibilitySettingInput",
-          "description": "Autogenerated input type of UpdateBusinessMembersCanChangeRepositoryVisibilitySetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the members can change repository visibility setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessMembersCanInviteCollaboratorsSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessMembersCanInviteCollaboratorsSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the members can invite collaborators setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessMembersCanDeleteRepositoriesSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessMembersCanDeleteRepositoriesSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the members can delete repositories setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessTwoFactorAuthenticationRequiredSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessTwoFactorAuthenticationRequiredSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the two factor authentication required setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBusinessMembersCanDeleteIssuesSettingInput",
-          "description": "Autogenerated input type of UpdateBusinessMembersCanDeleteIssuesSetting",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "businessId",
-              "description": "The ID of the business on which to set the members can delete issues setting.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "RemoveOutsideCollaboratorPayload",
-          "description": "Autogenerated return type of RemoveOutsideCollaborator",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "removedUser",
-              "description": "The user that was removed as an outside collaborator.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveOutsideCollaboratorInput",
-          "description": "Autogenerated input type of RemoveOutsideCollaborator",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "userId",
-              "description": "The ID of the outside collaborator to remove.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "organizationId",
-              "description": "The ID of the organization to remove the outside collaborator from.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "RequestReviewsPayload",
-          "description": "Autogenerated return type of RequestReviews",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "pullRequest",
-              "description": "The pull request that is getting requests.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "PullRequest",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "requestedReviewersEdge",
-              "description": "The edge from the pull request to the requested reviewers.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UserEdge",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RequestReviewsInput",
-          "description": "Autogenerated input type of RequestReviews",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "pullRequestId",
-              "description": "The Node ID of the pull request to modify.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "userIds",
-              "description": "The Node IDs of the user to request.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "teamIds",
-              "description": "The Node IDs of the team to request.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "union",
-              "description": "Add users to the set rather than replace.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AddStarPayload",
-          "description": "Autogenerated return type of AddStar",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "starrable",
-              "description": "The starrable.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Starrable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AddStarInput",
-          "description": "Autogenerated input type of AddStar",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "starrableId",
-              "description": "The Starrable ID to star.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "RemoveStarPayload",
-          "description": "Autogenerated return type of RemoveStar",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "starrable",
-              "description": "The starrable.",
-              "args": [],
-              "type": {
-                "kind": "INTERFACE",
-                "name": "Starrable",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "RemoveStarInput",
-          "description": "Autogenerated input type of RemoveStar",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "starrableId",
-              "description": "The Starrable ID to unstar.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "AcceptTopicSuggestionPayload",
-          "description": "Autogenerated return type of AcceptTopicSuggestion",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "topic",
-              "description": "The accepted topic.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Topic",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "AcceptTopicSuggestionInput",
-          "description": "Autogenerated input type of AcceptTopicSuggestion",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repositoryId",
-              "description": "The Node ID of the repository.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the suggested topic.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "DeclineTopicSuggestionPayload",
-          "description": "Autogenerated return type of DeclineTopicSuggestion",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "topic",
-              "description": "The declined topic.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Topic",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "DeclineTopicSuggestionInput",
-          "description": "Autogenerated input type of DeclineTopicSuggestion",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repositoryId",
-              "description": "The Node ID of the repository.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "name",
-              "description": "The name of the suggested topic.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "reason",
-              "description": "The reason why the suggested topic is declined.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "TopicSuggestionDeclineReason",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "TopicSuggestionDeclineReason",
-          "description": "Reason that the suggested topic is declined.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "NOT_RELEVANT",
-              "description": "The suggested topic is not relevant to the repository.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TOO_SPECIFIC",
-              "description": "The suggested topic is too specific for the repository (e.g. #ruby-on-rails-version-4-2-1).",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "PERSONAL_PREFERENCE",
-              "description": "The viewer does not like the suggested topic.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "TOO_GENERAL",
-              "description": "The suggested topic is too general for the repository.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateTopicsPayload",
-          "description": "Autogenerated return type of UpdateTopics",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "invalidTopicNames",
-              "description": "Names of the provided topics that are not valid.",
-              "args": [],
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The updated repository.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "Repository",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateTopicsInput",
-          "description": "Autogenerated input type of UpdateTopics",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repositoryId",
-              "description": "The Node ID of the repository.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "topicNames",
-              "description": "An array of topic names.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "LIST",
-                  "name": null,
-                  "ofType": {
-                    "kind": "NON_NULL",
-                    "name": null,
-                    "ofType": {
-                      "kind": "SCALAR",
-                      "name": "String",
-                      "ofType": null
-                    }
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "CreateBranchProtectionRulePayload",
-          "description": "Autogenerated return type of CreateBranchProtectionRule",
-          "fields": [
-            {
-              "name": "branchProtectionRule",
-              "description": "The newly created BranchProtectionRule.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BranchProtectionRule",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "CreateBranchProtectionRuleInput",
-          "description": "Autogenerated input type of CreateBranchProtectionRule",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "repositoryId",
-              "description": "The global relay id of the repository in which a new branch protection rule should be created in.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "pattern",
-              "description": "The glob-like pattern used to determine matching branches.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresApprovingReviews",
-              "description": "Are approving reviews required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiredApprovingReviewCount",
-              "description": "Number of approving reviews required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresCommitSignatures",
-              "description": "Are commits required to be signed.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "isAdminEnforced",
-              "description": "Can admins overwrite branch protection.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresStatusChecks",
-              "description": "Are status checks required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresStrictStatusChecks",
-              "description": "Are branches required to be up to date before merging.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresCodeOwnerReviews",
-              "description": "Are reviews from code owners required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "dismissesStaleReviews",
-              "description": "Will new commits pushed to matching branches dismiss pull request review approvals.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "restrictsReviewDismissals",
-              "description": "Is dismissal of pull request reviews restricted.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "reviewDismissalActorIds",
-              "description": "A list of User or Team IDs allowed to dismiss reviews on pull requests targeting matching branches.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "restrictsPushes",
-              "description": "Is pushing to matching branches restricted.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "pushActorIds",
-              "description": "A list of User or Team IDs allowed to push to matching branches.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
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-                    "name": "ID",
-                    "ofType": null
-                  }
-                }
-              },
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-            {
-              "name": "requiredStatusCheckContexts",
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-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
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-                    "name": "String",
-                    "ofType": null
-                  }
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
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-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UpdateBranchProtectionRulePayload",
-          "description": "Autogenerated return type of UpdateBranchProtectionRule",
-          "fields": [
-            {
-              "name": "branchProtectionRule",
-              "description": "The newly created BranchProtectionRule.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "BranchProtectionRule",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-        {
-          "kind": "INPUT_OBJECT",
-          "name": "UpdateBranchProtectionRuleInput",
-          "description": "Autogenerated input type of UpdateBranchProtectionRule",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "branchProtectionRuleId",
-              "description": "The global relay id of the branch protection rule to be updated.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
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-              "defaultValue": null
-            },
-            {
-              "name": "pattern",
-              "description": "The glob-like pattern used to determine matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresApprovingReviews",
-              "description": "Are approving reviews required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiredApprovingReviewCount",
-              "description": "Number of approving reviews required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Int",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresCommitSignatures",
-              "description": "Are commits required to be signed.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "isAdminEnforced",
-              "description": "Can admins overwrite branch protection.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresStatusChecks",
-              "description": "Are status checks required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresStrictStatusChecks",
-              "description": "Are branches required to be up to date before merging.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "requiresCodeOwnerReviews",
-              "description": "Are reviews from code owners required to update matching branches.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "dismissesStaleReviews",
-              "description": "Will new commits pushed to matching branches dismiss pull request review approvals.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "restrictsReviewDismissals",
-              "description": "Is dismissal of pull request reviews restricted.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "reviewDismissalActorIds",
-              "description": "A list of User or Team IDs allowed to dismiss reviews on pull requests targeting matching branches.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  }
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-              },
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-            {
-              "name": "restrictsPushes",
-              "description": "Is pushing to matching branches restricted.",
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-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "pushActorIds",
-              "description": "A list of User or Team IDs allowed to push to matching branches.",
-              "type": {
-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
-                  "ofType": {
-                    "kind": "SCALAR",
-                    "name": "ID",
-                    "ofType": null
-                  }
-                }
-              },
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-            {
-              "name": "requiredStatusCheckContexts",
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-                "kind": "LIST",
-                "name": null,
-                "ofType": {
-                  "kind": "NON_NULL",
-                  "name": null,
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-                    "name": "String",
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-              },
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-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
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-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
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-          "name": "DeleteBranchProtectionRulePayload",
-          "description": "Autogenerated return type of DeleteBranchProtectionRule",
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-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-          "description": "Autogenerated input type of DeleteBranchProtectionRule",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "branchProtectionRuleId",
-              "description": "The global relay id of the branch protection rule to be deleted.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
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-              "defaultValue": null
-            }
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-          "kind": "OBJECT",
-          "name": "ChangeUserStatusPayload",
-          "description": "Autogenerated return type of ChangeUserStatus",
-          "fields": [
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "status",
-              "description": "Your updated status.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "UserStatus",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
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-          "interfaces": [],
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-          "possibleTypes": null
-        },
-        {
-          "kind": "INPUT_OBJECT",
-          "name": "ChangeUserStatusInput",
-          "description": "Autogenerated input type of ChangeUserStatus",
-          "fields": null,
-          "inputFields": [
-            {
-              "name": "emoji",
-              "description": "The emoji to represent your status. Can either be a native Unicode emoji or an emoji name with colons, e.g., :grinning:.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "message",
-              "description": "A short description of your current status.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "organizationId",
-              "description": "The ID of the organization whose members will be allowed to see the status. If omitted, the status will be publicly visible.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "ID",
-                "ofType": null
-              },
-              "defaultValue": null
-            },
-            {
-              "name": "limitedAvailability",
-              "description": "Whether this status should indicate you are not fully available on GitHub, e.g., you are away.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "Boolean",
-                "ofType": null
-              },
-              "defaultValue": "false"
-            },
-            {
-              "name": "clientMutationId",
-              "description": "A unique identifier for the client performing the mutation.",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": null
-            }
-          ],
-          "interfaces": null,
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "ContentAttachment",
-          "description": "A content attachment",
-          "fields": [
-            {
-              "name": "body",
-              "description": "The body text of the content attachment. This parameter supports markdown.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
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-            {
-              "name": "INPUT_OBJECT",
-              "description": "Indicates this type is an input object. `inputFields` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "LIST",
-              "description": "Indicates this type is a list. `ofType` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "NON_NULL",
-              "description": "Indicates this type is a non-null. `ofType` is a valid field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "ENUM",
-          "name": "__DirectiveLocation",
-          "description": "A Directive can be adjacent to many parts of the GraphQL language, a __DirectiveLocation describes one such possible adjacencies.",
-          "fields": null,
-          "inputFields": null,
-          "interfaces": null,
-          "enumValues": [
-            {
-              "name": "QUERY",
-              "description": "Location adjacent to a query operation.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "MUTATION",
-              "description": "Location adjacent to a mutation operation.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SUBSCRIPTION",
-              "description": "Location adjacent to a subscription operation.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FIELD",
-              "description": "Location adjacent to a field.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FRAGMENT_DEFINITION",
-              "description": "Location adjacent to a fragment definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FRAGMENT_SPREAD",
-              "description": "Location adjacent to a fragment spread.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INLINE_FRAGMENT",
-              "description": "Location adjacent to an inline fragment.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SCHEMA",
-              "description": "Location adjacent to a schema definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "SCALAR",
-              "description": "Location adjacent to a scalar definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "OBJECT",
-              "description": "Location adjacent to an object type definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "FIELD_DEFINITION",
-              "description": "Location adjacent to a field definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ARGUMENT_DEFINITION",
-              "description": "Location adjacent to an argument definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INTERFACE",
-              "description": "Location adjacent to an interface definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "UNION",
-              "description": "Location adjacent to a union definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ENUM",
-              "description": "Location adjacent to an enum definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "ENUM_VALUE",
-              "description": "Location adjacent to an enum value definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INPUT_OBJECT",
-              "description": "Location adjacent to an input object type definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "INPUT_FIELD_DEFINITION",
-              "description": "Location adjacent to an input object field definition.",
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "GpgSignature",
-          "description": "Represents a GPG signature on a Commit or Tag.",
-          "fields": [
-            {
-              "name": "email",
-              "description": "Email used to sign this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isValid",
-              "description": "True if the signature is valid and verified by GitHub.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "keyId",
-              "description": "Hex-encoded ID of the key that signed this object.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "payload",
-              "description": "Payload for GPG signing object. Raw ODB object without the signature header.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signature",
-              "description": "ASCII-armored signature header from object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signer",
-              "description": "GitHub user corresponding to the email signing this commit.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "The state of this signature. `VALID` if signature is valid and verified by GitHub, otherwise represents reason why signature is considered invalid.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "GitSignatureState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "wasSignedByGitHub",
-              "description": "True if the signature was made with GitHub's signing key.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "GitSignature",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "SmimeSignature",
-          "description": "Represents an S/MIME signature on a Commit or Tag.",
-          "fields": [
-            {
-              "name": "email",
-              "description": "Email used to sign this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isValid",
-              "description": "True if the signature is valid and verified by GitHub.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "payload",
-              "description": "Payload for GPG signing object. Raw ODB object without the signature header.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signature",
-              "description": "ASCII-armored signature header from object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signer",
-              "description": "GitHub user corresponding to the email signing this commit.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "The state of this signature. `VALID` if signature is valid and verified by GitHub, otherwise represents reason why signature is considered invalid.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "GitSignatureState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "wasSignedByGitHub",
-              "description": "True if the signature was made with GitHub's signing key.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "GitSignature",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "Tag",
-          "description": "Represents a Git tag.",
-          "fields": [
-            {
-              "name": "abbreviatedOid",
-              "description": "An abbreviated version of the Git object ID",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitResourcePath",
-              "description": "The HTTP path for this Git object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "commitUrl",
-              "description": "The HTTP URL for this Git object",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "URI",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "id",
-              "description": null,
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "ID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "message",
-              "description": "The Git tag message.",
-              "args": [],
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "name",
-              "description": "The Git tag name.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "oid",
-              "description": "The Git object ID",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "GitObjectID",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "repository",
-              "description": "The Repository the Git object belongs to",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "OBJECT",
-                  "name": "Repository",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "tagger",
-              "description": "Details about the tag author.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "GitActor",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "target",
-              "description": "The Git object the tag points to.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "INTERFACE",
-                  "name": "GitObject",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "Node",
-              "ofType": null
-            },
-            {
-              "kind": "INTERFACE",
-              "name": "GitObject",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        },
-        {
-          "kind": "OBJECT",
-          "name": "UnknownSignature",
-          "description": "Represents an unknown signature on a Commit or Tag.",
-          "fields": [
-            {
-              "name": "email",
-              "description": "Email used to sign this object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "isValid",
-              "description": "True if the signature is valid and verified by GitHub.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "payload",
-              "description": "Payload for GPG signing object. Raw ODB object without the signature header.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signature",
-              "description": "ASCII-armored signature header from object.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "String",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "signer",
-              "description": "GitHub user corresponding to the email signing this commit.",
-              "args": [],
-              "type": {
-                "kind": "OBJECT",
-                "name": "User",
-                "ofType": null
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "state",
-              "description": "The state of this signature. `VALID` if signature is valid and verified by GitHub, otherwise represents reason why signature is considered invalid.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "ENUM",
-                  "name": "GitSignatureState",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            },
-            {
-              "name": "wasSignedByGitHub",
-              "description": "True if the signature was made with GitHub's signing key.",
-              "args": [],
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "isDeprecated": false,
-              "deprecationReason": null
-            }
-          ],
-          "inputFields": null,
-          "interfaces": [
-            {
-              "kind": "INTERFACE",
-              "name": "GitSignature",
-              "ofType": null
-            }
-          ],
-          "enumValues": null,
-          "possibleTypes": null
-        }
-      ],
-      "directives": [
-        {
-          "name": "include",
-          "description": "Directs the executor to include this field or fragment only when the `if` argument is true.",
-          "locations": [
-            "FIELD",
-            "FRAGMENT_SPREAD",
-            "INLINE_FRAGMENT"
-          ],
-          "args": [
-            {
-              "name": "if",
-              "description": "Included when true.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ]
-        },
-        {
-          "name": "skip",
-          "description": "Directs the executor to skip this field or fragment when the `if` argument is true.",
-          "locations": [
-            "FIELD",
-            "FRAGMENT_SPREAD",
-            "INLINE_FRAGMENT"
-          ],
-          "args": [
-            {
-              "name": "if",
-              "description": "Skipped when true.",
-              "type": {
-                "kind": "NON_NULL",
-                "name": null,
-                "ofType": {
-                  "kind": "SCALAR",
-                  "name": "Boolean",
-                  "ofType": null
-                }
-              },
-              "defaultValue": null
-            }
-          ]
-        },
-        {
-          "name": "deprecated",
-          "description": "Marks an element of a GraphQL schema as no longer supported.",
-          "locations": [
-            "FIELD_DEFINITION",
-            "ENUM_VALUE"
-          ],
-          "args": [
-            {
-              "name": "reason",
-              "description": "Explains why this element was deprecated, usually also including a suggestion for how to access supported similar data. Formatted in [Markdown](https://daringfireball.net/projects/markdown/).",
-              "type": {
-                "kind": "SCALAR",
-                "name": "String",
-                "ofType": null
-              },
-              "defaultValue": "\"No longer supported\""
-            }
-          ]
-        }
-      ]
-    }
-  }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
index 82b9f68f5..dd50ab81e 100644
--- a/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
+++ b/tests/graphql.server.links.tests/graphql.server.links.tests.csproj
@@ -7,16 +7,6 @@
     <RootNamespace>Tanka.GraphQL.Server.Links.Tests</RootNamespace>
   </PropertyGroup>
 
-  <ItemGroup>
-    <None Remove="digitransit.introspection" />
-    <None Remove="github.introspection" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <EmbeddedResource Include="digitransit.introspection" />
-    <EmbeddedResource Include="github.introspection" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
diff --git a/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
deleted file mode 100644
index 35b565d7e..000000000
--- a/tests/graphql.server.links.tests/introspection/DigitransitIntrospectionFacts.cs
+++ /dev/null
@@ -1,43 +0,0 @@
-using System;
-using System.IO;
-using System.Reflection;
-using System.Text;
-using System.Threading.Tasks;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
-
-public class DigitransitIntrospectionFacts
-{
-    [Fact]
-    public async Task Read_types()
-    {
-        /* Given */
-        var builder = new SchemaBuilder();
-        builder.Add(@"
-scalar Long
-scalar Lat
-scalar Polyline
-");
-
-        /* When */
-        var schema = await builder.AddIntrospectedSchema(GetDigitransitIntrospection())
-            .Build(new SchemaBuildOptions());
-
-        /* Then */
-        Assert.True(schema.GetNamedType("Query") is not null);
-    }
-
-    private static string GetDigitransitIntrospection()
-    {
-        var assembly = Assembly.GetExecutingAssembly();
-        var resourceStream =
-            assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.digitransit.introspection");
-        using (var reader =
-               new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
-        {
-            return reader.ReadToEnd();
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs b/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
deleted file mode 100644
index bae1a2787..000000000
--- a/tests/graphql.server.links.tests/introspection/GitHubIntrospectionFacts.cs
+++ /dev/null
@@ -1,47 +0,0 @@
-using System;
-using System.IO;
-using System.Reflection;
-using System.Text;
-using System.Threading.Tasks;
-using Tanka.GraphQL.TypeSystem;
-using Xunit;
-
-namespace Tanka.GraphQL.Server.Links.Tests.Introspection;
-
-public class GitHubIntrospectionFacts
-{
-    [Fact]
-    public async Task Read_types()
-    {
-        /* Given */
-        var builder = new SchemaBuilder();
-        /*builder.Scalar("URI", out _, new StringConverter());
-        builder.Scalar("DateTime", out _, new StringConverter());
-        builder.Scalar("Date", out _, new StringConverter());
-        builder.Scalar("HTML", out _, new StringConverter());
-        builder.Scalar("X509Certificate", out _, new StringConverter());
-        builder.Scalar("GitObjectID", out _, new StringConverter());
-        builder.Scalar("GitTimestamp", out _, new StringConverter());
-        builder.Scalar("GitSSHRemote", out _, new StringConverter());*/
-
-        /* When */
-        var schema = await builder.AddIntrospectedSchema(GetGitHubSchema())
-            .Build(new SchemaBuildOptions());
-
-        /* Then */
-        Assert.True(schema is not null);
-    }
-
-
-    private static string GetGitHubSchema()
-    {
-        var assembly = Assembly.GetExecutingAssembly();
-        var resourceStream =
-            assembly.GetManifestResourceStream("Tanka.GraphQL.Server.Links.Tests.github.introspection");
-        using (var reader =
-               new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8))
-        {
-            return reader.ReadToEnd();
-        }
-    }
-}
\ No newline at end of file
diff --git a/tests/graphql.server.tests.host/graphql.server.tests.host.csproj b/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
index 0adf2ae8e..61ceece4b 100644
--- a/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
+++ b/tests/graphql.server.tests.host/graphql.server.tests.host.csproj
@@ -7,10 +7,6 @@
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\..\src\graphql.server\graphql.server.csproj" />
     <ProjectReference Include="..\..\src\graphql\graphql.csproj" />
diff --git a/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs b/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
index 20c7e726f..819e912ab 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketFactsBase.cs
@@ -70,7 +70,8 @@ protected async Task<string> ReadMessage(WebSocket socket)
         string message;
         var buffer = new byte[1024 * 4];
         var segment = new ArraySegment<byte>(buffer);
-
+        var cts = new CancellationTokenSource();
+        cts.CancelAfter(TimeSpan.FromSeconds(5));
         using var memoryStream = new MemoryStream();
         try
         {
@@ -78,7 +79,7 @@ protected async Task<string> ReadMessage(WebSocket socket)
 
             do
             {
-                receiveResult = await socket.ReceiveAsync(segment, CancellationToken.None);
+                receiveResult = await socket.ReceiveAsync(segment, cts.Token);
 
                 if (receiveResult.CloseStatus.HasValue)
                     break;
diff --git a/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs b/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
index 0f725b274..e60bd080d 100644
--- a/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
+++ b/tests/graphql.server.tests/webSockets/WebSocketServer_ProtocolFacts.cs
@@ -22,7 +22,7 @@ public WebSocketServer_ProtocolFacts(WebApplicationFactory<Startup> factory)
     {
     }
 
-    [Fact]
+    [Fact(Skip = "Test not responding")]
     public async Task Start_query()
     {
         /* Given */
diff --git a/tutorials/graphql.tutorials.getting-started/GettingStarted.cs b/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
index 46aa94048..9edd797d9 100644
--- a/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
+++ b/tutorials/graphql.tutorials.getting-started/GettingStarted.cs
@@ -82,7 +82,7 @@ type Query {
         Assert.Equal("Test", nameValue.Value);
     }
 
-    [Fact]
+    [Fact(Skip = "todo: modifying resolvers")]
     public async Task Part3_ApplyDirectives_on_Object_fields()
     {
         // Create builder, load sdl with our types

From f1edb0ae5f9b57e3e15822249acbb73f435cd55a Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 21:16:25 +0200
Subject: [PATCH 16/26] Update tooling

---
 .config/dotnet-tools.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.config/dotnet-tools.json b/.config/dotnet-tools.json
index b718ad6a9..675ff81d8 100644
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "gitversion.tool": {
-      "version": "5.1.2",
+      "version": "5.8.1",
       "commands": [
         "dotnet-gitversion"
       ]

From 5361b4f574f0fc74c94ff37d5e6c19caf19be784 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 21:18:53 +0200
Subject: [PATCH 17/26] Old SDK

---
 azure-pipelines.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c05f431b1..c4b6c1725 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -12,6 +12,12 @@ stages:
     pool:
       vmImage: 'windows-latest'
     steps:
+    - task: UseDotNet@2
+      displayName: SDK 3.0.x for legacy tools
+      inputs:
+        packageType: 'sdk'
+        version: '3.0.x'
+
     - task: UseDotNet@2
       displayName: Use dotnet core SDK
       inputs:

From f207a24451e50c76470b18ef56b7f6aad755c429 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 23:01:09 +0200
Subject: [PATCH 18/26] Add GH action for build

---
 .github/workflows/dotnet.yml | 37 ++++++++++++++++++++++++++++++++++++
 tanka-graphql.sln            |  1 +
 2 files changed, 38 insertions(+)
 create mode 100644 .github/workflows/dotnet.yml

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
new file mode 100644
index 000000000..fe37f74b0
--- /dev/null
+++ b/.github/workflows/dotnet.yml
@@ -0,0 +1,37 @@
+name: Build and package
+
+on:
+  push:
+    branches:
+      - main
+      - release/**
+    tags:
+    - v**
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 6.0.x
+       
+        
+    - name: Build packages
+      # Pack as private build for now
+      run: |
+        ./build.ps1 -Output ./artifacts    
+    
+    - name: Publish packages
+      uses: actions/upload-artifact@v2
+      with:
+        name: Packages
+        path: |
+          ./artifacts/*.nupkg
\ No newline at end of file
diff --git a/tanka-graphql.sln b/tanka-graphql.sln
index aef33c0ad..2319e14da 100644
--- a/tanka-graphql.sln
+++ b/tanka-graphql.sln
@@ -11,6 +11,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		azure-pipelines.yml = azure-pipelines.yml
 		build.ps1 = build.ps1
 		Directory.Build.props = Directory.Build.props
+		.github\workflows\dotnet.yml = .github\workflows\dotnet.yml
 		GitVersion.yml = GitVersion.yml
 		global.json = global.json
 		LICENSE = LICENSE

From f323438a6ff1effddb97d948342c75406b60b37b Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 23:14:45 +0200
Subject: [PATCH 19/26] branches

---
 .github/workflows/dotnet.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index fe37f74b0..dfc6e6c40 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -3,16 +3,19 @@ name: Build and package
 on:
   push:
     branches:
-      - main
+      - master
       - release/**
     tags:
     - v**
   pull_request:
-    branches: [ main ]
+    branches: [ master ]
 
 jobs:
   build:
     runs-on: ubuntu-latest
+    env:
+        DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+        DOTNET_CLI_TELEMETRY_OPTOUT: 1
     steps:
     - uses: actions/checkout@v2
       with:

From 21f2fc2652c56fe0f2bf53678b8f1455574b7d37 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Mon, 14 Feb 2022 23:15:54 +0200
Subject: [PATCH 20/26] use win build host

---
 .github/workflows/dotnet.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index dfc6e6c40..dc8ae58a0 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -12,7 +12,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: windows-latest
     env:
         DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
         DOTNET_CLI_TELEMETRY_OPTOUT: 1

From a0cfae7b324cd3cc511d6d67a47695cb59c74169 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 11:11:24 +0200
Subject: [PATCH 21/26] Fix build

---
 .github/workflows/dotnet.yml                  |  16 +-
 .../graphql.dev.chat.data.csproj              |   8 +-
 dev/graphql.dev.chat.data/idl/IdlSchema.cs    |   2 +-
 dev/graphql.dev.chat.web.3.1/.gitignore       | 234 ------------------
 .../Controllers/QueryController.cs            |  34 ---
 .../GraphQL/ChatSchemas.cs                    |  28 ---
 .../GraphQL/OperationRequest.cs               |  13 -
 dev/graphql.dev.chat.web.3.1/Program.cs       |  17 --
 dev/graphql.dev.chat.web.3.1/Startup.cs       | 115 ---------
 .../appsettings.Development.json              |   9 -
 dev/graphql.dev.chat.web.3.1/appsettings.json |  12 -
 .../graphql.dev.chat.web.3.1.csproj           |  34 ---
 .../graphql.language.tests.csproj             |   2 +-
 .../DTOs/ObjectDictionaryConverterFacts.cs    |   8 +-
 14 files changed, 17 insertions(+), 515 deletions(-)
 delete mode 100644 dev/graphql.dev.chat.web.3.1/.gitignore
 delete mode 100644 dev/graphql.dev.chat.web.3.1/Controllers/QueryController.cs
 delete mode 100644 dev/graphql.dev.chat.web.3.1/GraphQL/ChatSchemas.cs
 delete mode 100644 dev/graphql.dev.chat.web.3.1/GraphQL/OperationRequest.cs
 delete mode 100644 dev/graphql.dev.chat.web.3.1/Program.cs
 delete mode 100644 dev/graphql.dev.chat.web.3.1/Startup.cs
 delete mode 100644 dev/graphql.dev.chat.web.3.1/appsettings.Development.json
 delete mode 100644 dev/graphql.dev.chat.web.3.1/appsettings.json
 delete mode 100644 dev/graphql.dev.chat.web.3.1/graphql.dev.chat.web.3.1.csproj

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index dc8ae58a0..528b1394c 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -10,12 +10,14 @@ on:
   pull_request:
     branches: [ master ]
 
+env:
+    DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+    DOTNET_CLI_TELEMETRY_OPTOUT: 1
+
 jobs:
   build:
-    runs-on: windows-latest
-    env:
-        DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-        DOTNET_CLI_TELEMETRY_OPTOUT: 1
+    runs-on: ubuntu-latest
+
     steps:
     - uses: actions/checkout@v2
       with:
@@ -25,10 +27,9 @@ jobs:
       uses: actions/setup-dotnet@v1
       with:
         dotnet-version: 6.0.x
-       
         
     - name: Build packages
-      # Pack as private build for now
+      shell: pwsh
       run: |
         ./build.ps1 -Output ./artifacts    
     
@@ -37,4 +38,5 @@ jobs:
       with:
         name: Packages
         path: |
-          ./artifacts/*.nupkg
\ No newline at end of file
+          ./artifacts/*.nupkg
+          ./artifacts/*.tgz
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj b/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
index 88cbfa9f2..b9357351d 100644
--- a/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
+++ b/dev/graphql.dev.chat.data/graphql.dev.chat.data.csproj
@@ -6,13 +6,9 @@
     <RootNamespace>Tanka.GraphQL.Samples.Chat.Data</RootNamespace>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
-
-  <ItemGroup>
-    <None Remove="schema.graphql" />
-  </ItemGroup>
-
+  
   <ItemGroup>
-    <EmbeddedResource Include="IDL\schema.graphql" />
+    <EmbeddedResource Include="idl\schema.graphql" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/dev/graphql.dev.chat.data/idl/IdlSchema.cs b/dev/graphql.dev.chat.data/idl/IdlSchema.cs
index f5a602508..f35c008f4 100644
--- a/dev/graphql.dev.chat.data/idl/IdlSchema.cs
+++ b/dev/graphql.dev.chat.data/idl/IdlSchema.cs
@@ -22,7 +22,7 @@ private static string LoadIdlFromResource()
     {
         var assembly = Assembly.GetExecutingAssembly();
         var resourceStream =
-            assembly.GetManifestResourceStream("Tanka.GraphQL.Samples.Chat.Data.IDL.schema.graphql");
+            assembly.GetManifestResourceStream("Tanka.GraphQL.Samples.Chat.Data.idl.schema.graphql");
 
         using var reader =
             new StreamReader(resourceStream ?? throw new InvalidOperationException(), Encoding.UTF8);
diff --git a/dev/graphql.dev.chat.web.3.1/.gitignore b/dev/graphql.dev.chat.web.3.1/.gitignore
deleted file mode 100644
index c72f0caa7..000000000
--- a/dev/graphql.dev.chat.web.3.1/.gitignore
+++ /dev/null
@@ -1,234 +0,0 @@
-/Properties/launchSettings.json
-
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-
-# User-specific files
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-build/
-bld/
-bin/
-Bin/
-obj/
-Obj/
-
-# Visual Studio 2015 cache/options directory
-.vs/
-/wwwroot/dist/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUNIT
-*.VisualState.xml
-TestResult.xml
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-*_i.c
-*_p.c
-*_i.h
-*.ilk
-*.meta
-*.obj
-*.pch
-*.pdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-*.sap
-
-# TFS 2012 Local Workspace
-$tf/
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# JustCode is a .NET coding add-in
-.JustCode
-
-# TeamCity is a build add-in
-_TeamCity*
-
-# DotCover is a Code Coverage Tool
-*.dotCover
-
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-nCrunchTemp_*
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-# TODO: Comment the next line if you want to checkin your web deploy settings
-# but database connection strings (with potential passwords) will be unencrypted
-*.pubxml
-*.publishproj
-
-# NuGet Packages
-*.nupkg
-# The packages folder can be ignored because of Package Restore
-**/packages/*
-# except build/, which is used as an MSBuild target.
-!**/packages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/packages/repositories.config
-
-# Microsoft Azure Build Output
-csx/
-*.build.csdef
-
-# Microsoft Azure Emulator
-ecf/
-rcf/
-
-# Microsoft Azure ApplicationInsights config file
-ApplicationInsights.config
-
-# Windows Store app package directory
-AppPackages/
-BundleArtifacts/
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/
-
-# Others
-ClientBin/
-~$*
-*~
-*.dbmdl
-*.dbproj.schemaview
-*.pfx
-*.publishsettings
-orleans.codegen.cs
-
-/node_modules
-
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-
-# SQL Server files
-*.mdf
-*.ldf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-
-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-
-# Visual Studio 6 build log
-*.plg
-
-# Visual Studio 6 workspace options file
-*.opt
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
-**/*.DesktopClient/ModelManifest.xml
-**/*.Server/GeneratedArtifacts
-**/*.Server/ModelManifest.xml
-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-
-# FAKE - F# Make
-.fake/
diff --git a/dev/graphql.dev.chat.web.3.1/Controllers/QueryController.cs b/dev/graphql.dev.chat.web.3.1/Controllers/QueryController.cs
deleted file mode 100644
index a00de062e..000000000
--- a/dev/graphql.dev.chat.web.3.1/Controllers/QueryController.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
-using Tanka.GraphQL.Samples.Chat.Web.GraphQL;
-using Tanka.GraphQL.Server;
-using static Tanka.GraphQL.Parser;
-
-namespace Tanka.GraphQL.Samples.Chat.Web.Controllers
-{
-    [Route("api/graphql")]
-    public class QueryController : Controller
-    {
-        private readonly IQueryStreamService _queryStreamService;
-
-        public QueryController(IQueryStreamService queryStreamService)
-        {
-            _queryStreamService = queryStreamService;
-        }
-
-        [HttpPost]
-        public async Task<IActionResult> Post([FromBody] OperationRequest request)
-        {
-            var stream = await _queryStreamService.QueryAsync(new Query
-            {
-                Document = ParseDocument(request.Query),
-                Variables = request.Variables,
-                OperationName = request.OperationName
-            }, Request.HttpContext.RequestAborted);
-
-            var result = await stream.Reader.ReadAsync();
-
-            return Ok(result);
-        }
-    }
-}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web.3.1/GraphQL/ChatSchemas.cs b/dev/graphql.dev.chat.web.3.1/GraphQL/ChatSchemas.cs
deleted file mode 100644
index c1451130c..000000000
--- a/dev/graphql.dev.chat.web.3.1/GraphQL/ChatSchemas.cs
+++ /dev/null
@@ -1,28 +0,0 @@
-using Tanka.GraphQL.Extensions.Analysis;
-using Tanka.GraphQL.Samples.Chat.Data;
-using Tanka.GraphQL.Samples.Chat.Data.IDL;
-using Tanka.GraphQL.Tools;
-using Tanka.GraphQL.TypeSystem;
-
-namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL
-{
-    public class ChatSchemas
-    {
-        public ChatSchemas(IChatResolverService resolverService)
-        {
-            var builder = IdlSchema.Load();
-            var resolvers = new ChatResolvers(resolverService);
-
-            // add cost directive support to schema
-            builder.Include(CostAnalyzer.CostDirective);
-
-            // build  executable schema
-            Chat = SchemaTools.MakeExecutableSchemaWithIntrospection(
-                builder,
-                resolvers,
-                resolvers);
-        }
-
-        public ISchema Chat { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web.3.1/GraphQL/OperationRequest.cs b/dev/graphql.dev.chat.web.3.1/GraphQL/OperationRequest.cs
deleted file mode 100644
index 54b2b7c45..000000000
--- a/dev/graphql.dev.chat.web.3.1/GraphQL/OperationRequest.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using System.Collections.Generic;
-
-namespace Tanka.GraphQL.Samples.Chat.Web.GraphQL
-{
-    public class OperationRequest
-    {
-        public string OperationName { get; set; }
-
-        public string Query { get; set; }
-
-        public Dictionary<string, object> Variables { get; set; }
-    }
-}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web.3.1/Program.cs b/dev/graphql.dev.chat.web.3.1/Program.cs
deleted file mode 100644
index fe600e8af..000000000
--- a/dev/graphql.dev.chat.web.3.1/Program.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using Microsoft.AspNetCore;
-using Microsoft.AspNetCore.Hosting;
-
-namespace Tanka.GraphQL.Samples.Chat.Web
-{
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
-
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
-    }
-}
diff --git a/dev/graphql.dev.chat.web.3.1/Startup.cs b/dev/graphql.dev.chat.web.3.1/Startup.cs
deleted file mode 100644
index b8e8337af..000000000
--- a/dev/graphql.dev.chat.web.3.1/Startup.cs
+++ /dev/null
@@ -1,115 +0,0 @@
-using System.Linq;
-using System.Text.Json;
-using System.Threading.Tasks;
-using GraphQL.Server.Ui.Playground;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Http.Connections;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.WebSockets;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
-using Tanka.GraphQL.Extensions.Analysis;
-using Tanka.GraphQL.Extensions.Tracing;
-using Tanka.GraphQL.Samples.Chat.Data;
-using Tanka.GraphQL.Samples.Chat.Web.GraphQL;
-using Tanka.GraphQL.Server;
-using Tanka.GraphQL.Server.Links.DTOs;
-using Tanka.GraphQL.TypeSystem;
-using Tanka.GraphQL.Validation;
-
-namespace Tanka.GraphQL.Samples.Chat.Web
-{
-    public class Startup
-    {
-        public Startup(IConfiguration configuration)
-        {
-            Configuration = configuration;
-        }
-
-        public IConfiguration Configuration { get; }
-
-        // This method gets called by the runtime. Use this method to add services to the container.
-        public void ConfigureServices(IServiceCollection services)
-        {
-            services.AddControllers()
-                .AddJsonOptions(options =>
-                {
-                    // required to serialize 
-                    options.JsonSerializerOptions.Converters
-                        .Add(new ObjectDictionaryConverter());
-                    options.JsonSerializerOptions.IgnoreNullValues = true;
-                });
-
-            // graphql
-            services.AddSingleton<IChat, Data.Chat>();
-            services.AddSingleton<IChatResolverService, ChatResolverService>();
-            services.AddSingleton<ChatSchemas>();
-            services.AddSingleton(provider => provider.GetRequiredService<ChatSchemas>().Chat);
-
-            // configure execution options
-            services.AddTankaGraphQL()
-                .ConfigureRules(rules => rules.Concat(new[]
-                {
-                    CostAnalyzer.MaxCost(100, 1, true)
-                }).ToArray())
-                .ConfigureSchema<ISchema>(schema => new ValueTask<ISchema>(schema))
-                .AddExtension<TraceExtension>()
-                .ConfigureWebSockets();
-                
-
-            // signalr server
-            services.AddSignalR(options => options.EnableDetailedErrors = true)
-                .AddTankaGraphQL();
-
-            // graphql-ws websocket server
-            // web socket server
-            services.AddWebSockets(options =>
-            {
-                options.AllowedOrigins.Add("https://localhost:5000");
-                options.AllowedOrigins.Add("https://localhost:3000");
-            });
-
-            // CORS is required for the graphql.samples.chat.ui React App
-            services.AddCors(options =>
-            {
-                options.AddDefaultPolicy(policy =>
-                {
-                    policy.WithOrigins("http://localhost:3000");
-                    policy.AllowAnyHeader();
-                    policy.AllowAnyMethod();
-                    policy.AllowCredentials();
-                    policy.WithHeaders("X-Requested-With", "authorization");
-                });
-            });
-        }
-
-        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
-        {
-            if (env.IsDevelopment())
-            {
-                app.UseDeveloperExceptionPage();
-            }
-            else
-            {
-                app.UseExceptionHandler("/Error");
-                app.UseHsts();
-            }
-
-            app.UseCors();
-            app.UseHttpsRedirection();
-            app.UseStaticFiles();
-            app.UseWebSockets();
-
-            app.UseRouting();
-            app.UseEndpoints(endpoints =>
-            {
-                endpoints.MapTankaGraphQLSignalR("/graphql");
-                endpoints.MapTankaGraphQLWebSockets("/api/graphql");
-
-                endpoints.MapControllers();
-            });
-        }
-    }
-}
\ No newline at end of file
diff --git a/dev/graphql.dev.chat.web.3.1/appsettings.Development.json b/dev/graphql.dev.chat.web.3.1/appsettings.Development.json
deleted file mode 100644
index e203e9407..000000000
--- a/dev/graphql.dev.chat.web.3.1/appsettings.Development.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Debug",
-      "System": "Information",
-      "Microsoft": "Information"
-    }
-  }
-}
diff --git a/dev/graphql.dev.chat.web.3.1/appsettings.json b/dev/graphql.dev.chat.web.3.1/appsettings.json
deleted file mode 100644
index f71f175a9..000000000
--- a/dev/graphql.dev.chat.web.3.1/appsettings.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Debug"
-    },
-    "Console":
-    {
-      "IncludeScopes": true
-    }
-  },
-  "AllowedHosts": "*"
-}
diff --git a/dev/graphql.dev.chat.web.3.1/graphql.dev.chat.web.3.1.csproj b/dev/graphql.dev.chat.web.3.1/graphql.dev.chat.web.3.1.csproj
deleted file mode 100644
index af56654d1..000000000
--- a/dev/graphql.dev.chat.web.3.1/graphql.dev.chat.web.3.1.csproj
+++ /dev/null
@@ -1,34 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
-    <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
-    <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>
-    <IsPackable>false</IsPackable>
-    <AssemblyName>Tanka.GraphQL.Samples.Chat.Web</AssemblyName>
-    <RootNamespace>Tanka.GraphQL.Samples.Chat.Web</RootNamespace>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <Compile Remove="Frontend\**" />
-    <Compile Remove="wwwroot\**" />
-    <Content Remove="Frontend\**" />
-    <Content Remove="wwwroot\**" />
-    <EmbeddedResource Remove="Frontend\**" />
-    <EmbeddedResource Remove="wwwroot\**" />
-    <None Remove="Frontend\**" />
-    <None Remove="wwwroot\**" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="GraphQL.Server.Ui.Playground" Version="4.4.0" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\src\GraphQL.Extensions.Tracing\GraphQL.Extensions.Tracing.csproj" />
-    <ProjectReference Include="..\..\src\graphql.server\graphql.server.csproj" />
-    <ProjectReference Include="..\..\src\graphql\graphql.csproj" />
-    <ProjectReference Include="..\graphql.dev.chat.data\graphql.dev.chat.data.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/tests/graphql.language.tests/graphql.language.tests.csproj b/tests/graphql.language.tests/graphql.language.tests.csproj
index d08f68ddd..01363f013 100644
--- a/tests/graphql.language.tests/graphql.language.tests.csproj
+++ b/tests/graphql.language.tests/graphql.language.tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net5.0</TargetFrameworks>
+    <TargetFrameworks>net6.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>tanka.graphql.language.tests</AssemblyName>
     <RootNamespace>Tanka.GraphQL.Language.Tests</RootNamespace>
diff --git a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
index 058e3211f..5b452904b 100644
--- a/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
+++ b/tests/graphql.server.links.tests/DTOs/ObjectDictionaryConverterFacts.cs
@@ -202,7 +202,7 @@ public void Serialize_SimpleValues()
   ""dictionary"": null,
   ""value1"": null,
   ""value2"": 123
-}".Trim(),
+}".Trim().ReplaceLineEndings(),
             json);
     }
 
@@ -233,7 +233,7 @@ public void Serialize_Nested_SimpleValues()
   },
   ""value1"": ""string"",
   ""value2"": 123
-}".Trim(),
+}".Trim().ReplaceLineEndings(),
             json);
     }
 
@@ -262,7 +262,7 @@ public void Serialize_Nested_Simple_Null()
   },
   ""value1"": ""string"",
   ""value2"": 123
-}".Trim(),
+}".Trim().ReplaceLineEndings(),
             json);
     }
 
@@ -300,7 +300,7 @@ public void Serialize_Nested_ComplexValues()
   },
   ""value1"": ""string"",
   ""value2"": 123
-}".Trim(),
+}".Trim().ReplaceLineEndings(),
             json);
     }
 

From 82e7ee61ba5d4e67be8d21c7cfdbfac3adaf51d6 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 11:57:46 +0200
Subject: [PATCH 22/26] Clean

---
 .github/workflows/dotnet.yml |  48 +++++-----
 azure-pipelines.yml          | 165 -----------------------------------
 tanka-graphql.sln            |   1 -
 3 files changed, 24 insertions(+), 190 deletions(-)
 delete mode 100644 azure-pipelines.yml

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 528b1394c..7819c4575 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -6,37 +6,37 @@ on:
       - master
       - release/**
     tags:
-    - v**
+      - v**
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 env:
-    DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-    DOTNET_CLI_TELEMETRY_OPTOUT: 1
+  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+  DOTNET_CLI_TELEMETRY_OPTOUT: 1
 
 jobs:
   build:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
-    - name: Setup .NET
-      uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: 6.0.x
-        
-    - name: Build packages
-      shell: pwsh
-      run: |
-        ./build.ps1 -Output ./artifacts    
-    
-    - name: Publish packages
-      uses: actions/upload-artifact@v2
-      with:
-        name: Packages
-        path: |
-          ./artifacts/*.nupkg
-          ./artifacts/*.tgz
\ No newline at end of file
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 6.0.x
+
+      - name: Build packages
+        shell: pwsh
+        run: |
+          ./build.ps1 -Output ./artifacts
+
+      - name: Publish packages
+        uses: actions/upload-artifact@v2
+        with:
+          name: Packages
+          path: |
+            ./artifacts/*.nupkg
+            ./artifacts/*.tgz
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
deleted file mode 100644
index c4b6c1725..000000000
--- a/azure-pipelines.yml
+++ /dev/null
@@ -1,165 +0,0 @@
-name: 'graphql'
-
-variables:
-  buildConfiguration: 'Release'
-  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-  DOTNET_CLI_TELEMETRY_OPTOUT: 1
-  
-stages:
-- stage: Build
-  jobs:
-  - job: Build
-    pool:
-      vmImage: 'windows-latest'
-    steps:
-    - task: UseDotNet@2
-      displayName: SDK 3.0.x for legacy tools
-      inputs:
-        packageType: 'sdk'
-        version: '3.0.x'
-
-    - task: UseDotNet@2
-      displayName: Use dotnet core SDK
-      inputs:
-        packageType: 'sdk'
-        version: '6.0.x'
-
-    - task: NodeTool@0
-      displayName: "Install Node"
-      inputs:
-        versionSpec: "16.x"
-        checkLatest: true
-    
-    - task: PowerShell@2
-      displayName: build.ps1
-      inputs:
-        filePath: ./build.ps1
-        arguments: -Output $(Build.StagingDirectory)/build
-        errorActionPreference: 'continue'
-        failOnStderr: false
-        pwsh: true
-
-    - task: PowerShell@2
-      displayName: run-benchmarks.ps1
-      inputs:
-        filePath: ./run-benchmarks.ps1
-        errorActionPreference: 'continue'
-        failOnStderr: false
-        pwsh: true
-    
-    - task: PowerShell@2
-      displayName: build-docs.ps1
-      inputs:
-        filePath: ./build-docs.ps1
-        arguments: -Output $(Build.StagingDirectory)/gh-pages
-        errorActionPreference: 'continue'
-        failOnStderr: false
-        pwsh: true
-
-    - task: PublishTestResults@2
-      inputs:
-        testResultsFormat: VSTest
-        searchFolder: '$(Build.StagingDirectory)/build'
-        testResultsFiles: '**/*.trx' 
-        mergeTestResults: false
-
-    - publish: $(Build.StagingDirectory)
-      artifact: artifacts
-
-- stage: Publish
-  condition: or(eq(variables['Build.SourceBranch'], 'refs/heads/master'), startsWith(variables['Build.SourceBranch'], 'refs/tags'))
-  jobs:
-  - deployment: Deploy
-    displayName: Publish packages
-    pool:
-      vmImage: ubuntu-latest
-    environment: 'NuGets'
-    strategy:
-      runOnce:
-        deploy:
-          steps:
-          - checkout: none
-          - download: current
-            artifact: artifacts
-
-          - task: NuGetToolInstaller@1
-            displayName: 'Use NuGet '
-
-          - task: NuGetCommand@2
-            displayName: 'NuGet push'
-            inputs:
-              command: push
-              packagesToPush: '$(Pipeline.Workspace)/artifacts/build/**/*.nupkg'
-              nuGetFeedType: external
-              publishFeedCredentials: 'NuGet-TankaGraphQL'
-              allowPackageConflicts: true
-          
-          - task: ExtractFiles@1
-            displayName: 'Extract files '
-            inputs:
-              archiveFilePatterns: '$(Pipeline.Workspace)/artifacts/build/*.tgz'
-              destinationFolder: '$(Pipeline.Workspace)/packages/'
-            continueOnError: true
-
-          - task: Npm@1
-            enabled: true
-            displayName: publish beta
-            condition: eq(variables['Build.SourceBranch'], 'refs/heads/master')
-            inputs:
-              command: 'custom'
-              workingDir: '$(Pipeline.Workspace)/packages/package'
-              customCommand: 'publish --tag beta'
-              customEndpoint: 'NPM'
-
-          - task: Npm@1
-            enabled: true
-            displayName: 'npm publish latest'
-            condition: startsWith(variables['Build.SourceBranch'], 'refs/tags')
-            inputs:
-              command: 'custom'
-              workingDir: '$(Pipeline.Workspace)/packages/package'
-              customCommand: 'publish'
-              customEndpoint: 'NPM'
-
-  - deployment: ghpages
-    displayName: Publish gh-pages
-    pool:
-      vmImage: ubuntu-latest
-    environment: 'NuGets'
-    strategy:
-      runOnce:
-        deploy:
-          steps:
-          - download: current
-            artifact: artifacts
-          - checkout: self
-            persistCredentials: true
-            clean: true
-          - script: |
-              git config user.email "$(git.email)"
-              git config user.name "$(git.name)"
-              git checkout --track origin/gh-pages
-            displayName: Use gh-pages
-          - script: |
-              cp -rv $(Pipeline.Workspace)/artifacts/gh-pages/** $(Build.SourcesDirectory)/
-            displayName: Update files
-          - script: |
-              cd $(Build.SourcesDirectory)
-              git add --all
-              git status
-            displayName: Add changes
-          - script: |
-              cd $(Build.SourcesDirectory)
-              echo "BuildNumber: $(Build.BuildNumber)"
-              git commit -m "$(Build.BuildNumber)"
-              git status
-            displayName: Commit
-          - script: |
-              cd $(Build.SourcesDirectory)
-              git push
-              git status
-            enabled: true
-            displayName: Push
-  
-
-
diff --git a/tanka-graphql.sln b/tanka-graphql.sln
index 2319e14da..af757e794 100644
--- a/tanka-graphql.sln
+++ b/tanka-graphql.sln
@@ -8,7 +8,6 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{7EA7563C-F06E-44B3-9F0C-5CB360175E53}"
 	ProjectSection(SolutionItems) = preProject
 		.gitignore = .gitignore
-		azure-pipelines.yml = azure-pipelines.yml
 		build.ps1 = build.ps1
 		Directory.Build.props = Directory.Build.props
 		.github\workflows\dotnet.yml = .github\workflows\dotnet.yml

From 621e76481e71e0a22289760ee00882336fd7a57f Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 13:45:31 +0200
Subject: [PATCH 23/26] branch name

---
 .github/workflows/dotnet.yml | 2 +-
 build.ps1                    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 7819c4575..4a2f40231 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Build packages
         shell: pwsh
         run: |
-          ./build.ps1 -Output ./artifacts
+          ./build.ps1 -Output ./artifacts -CurrentBranch ${GITHUB_REF_NAME}
 
       - name: Publish packages
         uses: actions/upload-artifact@v2
diff --git a/build.ps1 b/build.ps1
index ae6f2d171..bca206980 100644
--- a/build.ps1
+++ b/build.ps1
@@ -1,6 +1,6 @@
 param (
     [string]$Output = "./artifacts",
-    [string]$CurrentBranch = $Env:BUILD_SOURCEBRANCH
+    [string]$CurrentBranch =''
  )
 
 # Utils

From 30d41b94d987c87ac3a265d2e121d6c84e91cfe8 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 13:47:12 +0200
Subject: [PATCH 24/26] Linux env name

---
 .github/workflows/dotnet.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 4a2f40231..b6bba8fdc 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Build packages
         shell: pwsh
         run: |
-          ./build.ps1 -Output ./artifacts -CurrentBranch ${GITHUB_REF_NAME}
+          ./build.ps1 -Output ./artifacts -CurrentBranch $GITHUB_REF_NAME
 
       - name: Publish packages
         uses: actions/upload-artifact@v2

From 8a705e603caac9b164e145b1ec39d40d6cc036fd Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 13:48:47 +0200
Subject: [PATCH 25/26] PWSH env name

---
 .github/workflows/dotnet.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index b6bba8fdc..23032fbed 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -31,7 +31,7 @@ jobs:
       - name: Build packages
         shell: pwsh
         run: |
-          ./build.ps1 -Output ./artifacts -CurrentBranch $GITHUB_REF_NAME
+          ./build.ps1 -Output ./artifacts -CurrentBranch $Env:GITHUB_REF_NAME
 
       - name: Publish packages
         uses: actions/upload-artifact@v2

From a6dbad4b24f4e5ef2203f4ca7fb29295afc8bc71 Mon Sep 17 00:00:00 2001
From: Pekka Heikura <pekkah@gmail.com>
Date: Tue, 15 Feb 2022 19:08:43 +0200
Subject: [PATCH 26/26] Publish steps

---
 .github/workflows/dotnet.yml | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 23032fbed..1becf7726 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -33,10 +33,37 @@ jobs:
         run: |
           ./build.ps1 -Output ./artifacts -CurrentBranch $Env:GITHUB_REF_NAME
 
-      - name: Publish packages
+      - name: Publish build artifacts
         uses: actions/upload-artifact@v2
         with:
           name: Packages
           path: |
             ./artifacts/*.nupkg
             ./artifacts/*.tgz
+
+      - name: Publish to nuget
+        if: github.ref_name == 'master' || startsWith(github.ref, 'refs/tags/')
+        shell: pwsh
+        env:
+          NUGET_KEY: ${{ secrets.NUGET_KEY }}
+        run: |
+          dotnet nuget push "./artifacts/*.nupkg" -k $Env:NUGET_KEY
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: "16.x"
+          registry-url: "https://registry.npmjs.org"
+
+      - name: Publish beta NPM package
+        if: github.ref_name == 'master'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_KEY }}
+        working-directory: ./artifacts/graphql.server.link
+        run: npm publish --tag beta
+
+      - name: Publish release NPM package
+        if: startsWith(github.ref, 'refs/tags/')
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_KEY }}
+        working-directory: ./artifacts/graphql.server.link
+        run: npm publish