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

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L104: 	DescriptorProto_Field_field_fullname          protoreflect.FullName = "google.protobuf.DescriptorProto.field"