Minor PR feedback

src/StreamJsonRpc/MessagePackFormatter.cs

@@ -1346,6 +1346,7 @@ public void Serialize(ref MessagePackWriter writer, T? value, MessagePackSeriali
     /// 3. Declare a constructor with a signature of (<see cref="SerializationInfo"/>, <see cref="StreamingContext"/>).
     /// </remarks>
     [RequiresDynamicCode(RuntimeReasons.CloseGenerics)]
+    [RequiresUnreferencedCode(RuntimeReasons.LoadType)]
     private class MessagePackExceptionResolver : IFormatterResolver
     {
         /// <summary>

src/StreamJsonRpc/Reflection/MessageFormatterEnumerableTracker.cs

@@ -100,19 +100,13 @@ private interface IGeneratingEnumeratorTracker : System.IAsyncDisposable
     /// </summary>
     /// <param name="objectType">The type which may implement <see cref="IAsyncEnumerable{T}"/>.</param>
     /// <returns>true if given <see cref="Type"/> implements <see cref="IAsyncEnumerable{T}"/>; otherwise, false.</returns>
-    /// <devremarks>
-    /// We use <see langword="int"/> as a generic type argument in this because what we use doesn't matter, but we must use *something*.
-    /// </devremarks>
     public static bool CanSerialize(Type objectType) => TrackerHelpers.FindIAsyncEnumerableInterfaceImplementedBy(objectType) is not null;
 
     /// <summary>
     /// Checks if a given <see cref="Type"/> is exactly some closed generic type based on <see cref="IAsyncEnumerable{T}"/>.
     /// </summary>
     /// <param name="objectType">The type which may be <see cref="IAsyncEnumerable{T}"/>.</param>
     /// <returns>true if given <see cref="Type"/> is <see cref="IAsyncEnumerable{T}"/>; otherwise, false.</returns>
-    /// <devremarks>
-    /// We use <see langword="int"/> as a generic type argument in this because what we use doesn't matter, but we must use *something*.
-    /// </devremarks>
     public static bool CanDeserialize(Type objectType) => TrackerHelpers.IsIAsyncEnumerable(objectType);
 
     /// <summary>

src/StreamJsonRpc/Reflection/MessageFormatterProgressTracker.cs

@@ -70,8 +70,7 @@ public MessageFormatterProgressTracker(JsonRpc jsonRpc, IJsonRpcFormatterState f
     /// </summary>
     /// <param name="objectType">The type which may implement <see cref="IProgress{T}"/>.</param>
     /// <returns>The <see cref="IProgress{T}"/> from given <see cref="Type"/> object, or <see langword="null"/>  if no such interface was found in the given <paramref name="objectType" />.</returns>
-    public static Type? FindIProgressOfT(Type objectType)
-        => TrackerHelpers.FindIProgressInterfaceImplementedBy(objectType);
+    public static Type? FindIProgressOfT(Type objectType) => TrackerHelpers.FindIProgressInterfaceImplementedBy(objectType);
 
     /// <summary>
     /// Checks if a given <see cref="Type"/> implements <see cref="IProgress{T}"/>.

src/StreamJsonRpc/Reflection/RpcMarshalableOptionalInterfaceAttribute.cs

@@ -37,7 +37,7 @@ public class RpcMarshalableOptionalInterfaceAttribute : Attribute
     /// updating RPC interfaces.</param>
     /// <param name="optionalInterface">The <see cref="Type"/> of the known optional interface that the marshalable
     /// object may implement.</param>
-    public RpcMarshalableOptionalInterfaceAttribute(int optionalInterfaceCode, Type optionalInterface)
+    public RpcMarshalableOptionalInterfaceAttribute(int optionalInterfaceCode, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] Type optionalInterface)
     {
         this.OptionalInterfaceCode = optionalInterfaceCode;
         this.OptionalInterface = optionalInterface;