Fix nullability on `IDesignerSerializationProvider.GetSerializer` (#81203)

* Fix nullability on IDesignerSerializationProvider.GetSerializer

* Add nullability to ref IDesignerSerializationProvider interface

diff --git a/src/libraries/System.ComponentModel.TypeConverter/ref/System.ComponentModel.TypeConverter.cs b/src/libraries/System.ComponentModel.TypeConverter/ref/System.ComponentModel.TypeConverter.cs
index 6eb4fe0..571f81e 100644 (file)
--- a/src/libraries/System.ComponentModel.TypeConverter/ref/System.ComponentModel.TypeConverter.cs
+++ b/src/libraries/System.ComponentModel.TypeConverter/ref/System.ComponentModel.TypeConverter.cs
@@ -2203,7 +2203,7 @@ namespace System.ComponentModel.Design.Serialization
     }
     public partial interface IDesignerSerializationProvider
     {
-        object? GetSerializer(System.ComponentModel.Design.Serialization.IDesignerSerializationManager manager, object currentSerializer, System.Type objectType, System.Type serializerType);
+        object? GetSerializer(System.ComponentModel.Design.Serialization.IDesignerSerializationManager manager, object? currentSerializer, System.Type? objectType, System.Type serializerType);
     }
     public partial interface IDesignerSerializationService
     {

diff --git a/src/libraries/System.ComponentModel.TypeConverter/src/System/ComponentModel/Design/Serialization/IDesignerSerializationProvider.cs b/src/libraries/System.ComponentModel.TypeConverter/src/System/ComponentModel/Design/Serialization/IDesignerSerializationProvider.cs
index 780fac8..c38751a 100644 (file)
--- a/src/libraries/System.ComponentModel.TypeConverter/src/System/ComponentModel/Design/Serialization/IDesignerSerializationProvider.cs
+++ b/src/libraries/System.ComponentModel.TypeConverter/src/System/ComponentModel/Design/Serialization/IDesignerSerializationProvider.cs
@@ -27,6 +27,6 @@ namespace System.ComponentModel.Design.Serialization
         /// either return it or return null to prevent an infinite
         /// loop.
         /// </summary>
-        object? GetSerializer(IDesignerSerializationManager manager, object currentSerializer, Type objectType, Type serializerType);
+        object? GetSerializer(IDesignerSerializationManager manager, object? currentSerializer, Type? objectType, Type serializerType);
     }
 }