const TF_SignatureDefFunctionMetadata* list) {
  return tensorflow::wrap(&tensorflow::unwrap(list)->arguments());
}

extern const TF_SignatureDefParamList* TF_SignatureDefFunctionMetadataReturns(
    const TF_SignatureDefFunctionMetadata* list) {
  return tensorflow::wrap(&tensorflow::unwrap(list)->returns());
}

// Retrieves the returns of the SignatureDefFunction. The caller is not
// responsible for freeing the returned pointer.
TF_CAPI_EXPORT extern const TF_SignatureDefParamList*
TF_SignatureDefFunctionMetadataReturns(
    const TF_SignatureDefFunctionMetadata* list);

#ifdef __cplusplus
}  // end extern "C"
#endif  // __cplusplus

      TF_SignatureDefFunctionGetMetadata(serving_default);

  const TF_SignatureDefParamList* args =
      TF_SignatureDefFunctionMetadataArgs(metadata);
  const TF_SignatureDefParamList* returns =
      TF_SignatureDefFunctionMetadataReturns(metadata);

  EXPECT_EQ(TF_SignatureDefParamListSize(args), 2);
  const TF_SignatureDefParam* param_a = TF_SignatureDefParamListGet(args, 0);