Avoid duplicating code and utilize the code from EndpointMetdataPopulator

Author: mkArtakMSFT

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

@@ -21,8 +21,6 @@ namespace Microsoft.AspNetCore.Mvc.ApplicationModels;
 internal class DefaultApplicationModelProvider : IApplicationModelProvider
 #pragma warning restore CA1852 // Seal internal types
 {
-    private static readonly MethodInfo PopulateMetadataForEndpointMethod = typeof(EndpointMetadataPopulator).GetMethod(nameof(PopulateMetadataForEndpoint), BindingFlags.NonPublic | BindingFlags.Static)!;
-
     private readonly MvcOptions _mvcOptions;
     private readonly IModelMetadataProvider _modelMetadataProvider;
     private readonly Func<ActionContext, bool> _supportsAllRequests;
@@ -374,8 +372,8 @@ internal static void AddReturnTypeMetadata(IList<SelectorModel> selectors, Metho
             var invokeArgs = new object[2];
             invokeArgs[0] = methodInfo;
             invokeArgs[1] = builder;
-            PopulateMetadataForEndpointMethod.MakeGenericMethod(returnType).Invoke(null, invokeArgs);
-
+            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)
@@ -712,12 +710,6 @@ private static void AddRange<T>(IList<T> list, IEnumerable<T> items)
         }
     }
 
-    private static void PopulateMetadataForEndpoint<T>(MethodInfo method, EndpointBuilder builder)
-        where T : IEndpointMetadataProvider
-    {
-        T.PopulateMetadata(method, builder);
-    }
-
     private sealed class InertEndpointBuilder : EndpointBuilder
     {
         public override Endpoint Build()

src/Shared/EndpointMetadataPopulator.cs

@@ -16,7 +16,7 @@ namespace Microsoft.AspNetCore.Http;
 internal static class EndpointMetadataPopulator
 {
     private static readonly MethodInfo PopulateMetadataForParameterMethod = typeof(EndpointMetadataPopulator).GetMethod(nameof(PopulateMetadataForParameter), BindingFlags.NonPublic | BindingFlags.Static)!;
-    private static readonly MethodInfo PopulateMetadataForEndpointMethod = typeof(EndpointMetadataPopulator).GetMethod(nameof(PopulateMetadataForEndpoint), BindingFlags.NonPublic | BindingFlags.Static)!;
+    internal static readonly MethodInfo PopulateMetadataForEndpointMethod = typeof(EndpointMetadataPopulator).GetMethod(nameof(PopulateMetadataForEndpoint), BindingFlags.NonPublic | BindingFlags.Static)!;
 
     public static void PopulateMetadata(MethodInfo methodInfo, EndpointBuilder builder, IEnumerable<ParameterInfo>? parameters = null)
     {