Change contentType parameter in GetSupportedContentTypes to nullable

Author: bkoelman

src/Mvc/Mvc.Core/src/ApiExplorer/IApiRequestFormatMetadataProvider.cs

@@ -25,6 +25,6 @@ public interface IApiRequestFormatMetadataProvider
  /// </param>
  /// <returns>Content types which are supported by the <see cref="Formatters.IInputFormatter"/>.</returns>
  IReadOnlyList<string>? GetSupportedContentTypes(
- string contentType,
+ string? contentType,
  Type objectType);
 }

src/Mvc/Mvc.Core/src/ApiExplorer/IApiResponseTypeMetadataProvider.cs

@@ -25,6 +25,6 @@ public interface IApiResponseTypeMetadataProvider
  /// </param>
  /// <returns>Content types which are supported by the <see cref="Formatters.IOutputFormatter"/>.</returns>
  IReadOnlyList<string>? GetSupportedContentTypes(
- string contentType,
+ string? contentType,
  Type objectType);
 }

src/Mvc/Mvc.Core/src/Formatters/InputFormatter.cs

@@ -118,7 +118,7 @@ public virtual Task<InputFormatterResult> ReadAsync(InputFormatterContext contex
  public abstract Task<InputFormatterResult> ReadRequestBodyAsync(InputFormatterContext context);
 
  /// <inheritdoc />
- public virtual IReadOnlyList<string>? GetSupportedContentTypes(string contentType, Type objectType)
+ public virtual IReadOnlyList<string>? GetSupportedContentTypes(string? contentType, Type objectType)
  {
  if (SupportedMediaTypes.Count == 0)
  {

src/Mvc/Mvc.Core/src/Formatters/OutputFormatter.cs

@@ -30,7 +30,7 @@ protected virtual bool CanWriteType(Type? type)
 
  /// <inheritdoc />
  public virtual IReadOnlyList<string>? GetSupportedContentTypes(
- string contentType,
+ string? contentType,
  Type objectType)
  {
  if (SupportedMediaTypes.Count == 0)

src/Mvc/Mvc.Core/src/PublicAPI.Unshipped.txt

@@ -1,8 +1,12 @@
 #nullable enable
+Microsoft.AspNetCore.Mvc.ApiExplorer.IApiRequestFormatMetadataProvider.GetSupportedContentTypes(string? contentType, System.Type! objectType) -> System.Collections.Generic.IReadOnlyList<string!>?
 Microsoft.AspNetCore.Mvc.ApiExplorer.IApiResponseMetadataProvider.Description.get -> string?
+Microsoft.AspNetCore.Mvc.ApiExplorer.IApiResponseTypeMetadataProvider.GetSupportedContentTypes(string? contentType, System.Type! objectType) -> System.Collections.Generic.IReadOnlyList<string!>?
 Microsoft.AspNetCore.Mvc.ProducesAttribute.Description.get -> string?
 Microsoft.AspNetCore.Mvc.ProducesAttribute.Description.set -> void
 Microsoft.AspNetCore.Mvc.ProducesDefaultResponseTypeAttribute.Description.get -> string?
 Microsoft.AspNetCore.Mvc.ProducesDefaultResponseTypeAttribute.Description.set -> void
 Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute.Description.get -> string?
 Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute.Description.set -> void
+virtual Microsoft.AspNetCore.Mvc.Formatters.InputFormatter.GetSupportedContentTypes(string? contentType, System.Type! objectType) -> System.Collections.Generic.IReadOnlyList<string!>?
+virtual Microsoft.AspNetCore.Mvc.Formatters.OutputFormatter.GetSupportedContentTypes(string? contentType, System.Type! objectType) -> System.Collections.Generic.IReadOnlyList<string!>?