Exclude the CreateActionModel method from trimming

Author: mkArtakMSFT

src/Mvc/Mvc.Core/src/ApplicationModels/DefaultApplicationModelProvider.cs

@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using Microsoft.AspNetCore.Http;
@@ -355,6 +356,8 @@ internal PropertyModel CreatePropertyModel(PropertyInfo propertyInfo)
         return actionModel;
     }
 
+    [UnconditionalSuppressMessage("AssemblyLoadTrimming", "IL2026:RequiresUnreferencedCode",
+        Justification = "The method utilizes reflection to get information about the return type of an action")]
     internal static void AddReturnTypeMetadata(IList<SelectorModel> selectors, MethodInfo methodInfo)
     {
         // Get metadata from return type
@@ -372,7 +375,7 @@ internal static void AddReturnTypeMetadata(IList<SelectorModel> selectors, Metho
             invokeArgs[0] = methodInfo;
             invokeArgs[1] = builder;
             EndpointMetadataPopulator.PopulateMetadataForEndpointMethod.MakeGenericMethod(returnType).Invoke(null, invokeArgs);
-            
+
             // The metadata is added to the builder's metadata collection.
             // We need to populate the selectors with that metadata.
             foreach (var metadata in builder.Metadata)