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New nullable annotation in AssociatedMetadataTypeTypeDescriptionProvider

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In .NET 6, a nullability annotation has been added to AssociatedMetadataTypeTypeDescriptionProvider.GetTypeDescriptor(Type, Object). This method was previously unannotated for nullable reference types.

Previous behavior

The affected method was treated as "oblivious" with regard to reference type nullability.

New behavior

The parameters of the affected method are now annotated with accurate nullability conditions.

Version introduced

6.0 RC 2

Type of breaking change

This change can affect source compatibility.

Reason for change

This method had dependencies on other APIs that were previously unannotated. The dependencies have since been annotated, allowing this API to also be annotated. This change completes our nullable reference type annotations for the shared framework libraries.

Update code that calls this method to reflect the revised nullability contract.

Affected APIs

API What changed
System.ComponentModel.DataAnnotations.AssociatedMetadataTypeTypeDescriptionProvider.GetTypeDescriptor(Type, Object) instance parameter type is nullable