return call_op->Execute(outputs, &num_outputs);
}

Status VerifySupportedSignature(TaggedValue signature) {
  if (signature.type() == TaggedValue::Type::TENSOR_SPEC) {
    return ::tensorflow::OkStatus();
  }
  if (signature.type() == TaggedValue::Type::TUPLE) {
    for (const auto& t : signature.tuple()) {
      if (t.type() != TaggedValue::Type::TENSOR_SPEC) {
        break;
      }
    }
    return ::tensorflow::OkStatus();