Update the implicit operator

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/ReferenceTypeAttribute.cs

@@ -0,0 +1,15 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+
+namespace Azure.ResourceManager.Core
+{
+    /// <summary>
+    /// An attribute class indicating a reference type for code generation.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class)]
+    public class ReferenceTypeAttribute : Attribute
+    {
+    }
+}

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/Resource.cs

@@ -8,6 +8,7 @@ namespace Azure.ResourceManager.Core
     /// <summary>
     /// A class representing the base resource used by all azure resources.
     /// </summary>
+    [ReferenceType]
     public abstract class Resource : IEquatable<Resource>, IEquatable<string>, IComparable<Resource>,
         IComparable<string>
     {

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/ResourceType.cs

@@ -66,7 +66,7 @@ public ResourceType Parent
         /// <summary>
         /// Implicit operator for initializing a <see cref="ResourceType"/> instance from a string.
         /// </summary>
-        /// <param name="other"> String to be conferted into a <see cref="ResourceType"/> object. </param>
+        /// <param name="other"> String to be converted into a <see cref="ResourceType"/> object. </param>
         public static implicit operator ResourceType(string other)
         {
             if (other is null)
@@ -75,6 +75,18 @@ public static implicit operator ResourceType(string other)
             return new ResourceType(other);
         }
 
+        /// <summary>
+        /// Implicit operator for initializing a string instance from a ResourceType.
+        /// </summary>
+        /// <param name="other"> <see cref="ResourceType"/> to be converted into a string object. </param>
+        public static implicit operator string(ResourceType other)
+        {
+            if (other is null)
+                return null;
+
+            return other.ToString();
+        }
+
         /// <summary>
         /// Compares a <see cref="ResourceType"/> object with a <see cref="string"/>.
         /// </summary>
@@ -175,7 +187,7 @@ public int CompareTo(ResourceType other)
             int compareResult = 0;
             if ((compareResult = string.Compare(Namespace, other.Namespace, StringComparison.InvariantCultureIgnoreCase)) == 0 &&
                 (compareResult = string.Compare(Type, other.Type, StringComparison.InvariantCultureIgnoreCase)) == 0 &&
-                (other.Parent != null))
+                (!(other.Parent is null)))
             {
                 return Parent.CompareTo(other.Parent);
             }
@@ -236,7 +248,7 @@ public override bool Equals(object obj)
 
             var resourceObj = obj as ResourceType;
 
-            if (resourceObj != null)
+            if (!(resourceObj is null))
                 return Equals(resourceObj);
 
             var stringObj = obj as string;
@@ -311,7 +323,7 @@ private void Parse(string resourceIdOrType)
                     throw new ArgumentOutOfRangeException(nameof(resourceIdOrType));
                 }
                 Namespace = parts[1];
-                
+
                 Type = string.Join("/", parts.Skip(2).Take(parts.Count - 3));
             }
             // Handle resource types (Micsrsoft.Compute/virtualMachines, Microsoft.Network/virtualNetworks/subnets)

sdk/resourcemanager/Azure.ResourceManager.Core/src/Resources/TrackedResource.cs

@@ -9,6 +9,7 @@ namespace Azure.ResourceManager.Core
     /// <summary>
     /// Generic representation of a tracked resource.  All tracked resources should extend this class
     /// </summary>
+    [ReferenceType]
     public abstract class TrackedResource : Resource
     {
         /// <summary>