const google.golang.org/protobuf/internal/genid.OneofDescriptorProto_message_fullname

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L255: 	OneofDescriptorProto_message_fullname protoreflect.FullName = "google.protobuf.OneofDescriptorProto"