google.golang.org/protobuf/reflect/protoregistry.Types.FindExtensionByNumber (method, view implemented interface methods)

one use

	google.golang.org/protobuf/reflect/protoregistry (current package)
		registry.go#L707: func (r *Types) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {