SignatureDefFunctionMetadata(std::vector<SignatureDefParam> arguments,
                               std::vector<SignatureDefParam> returns);

  const std::vector<SignatureDefParam>& arguments() const;
  const std::vector<SignatureDefParam>& returns() const;

 private:
  std::vector<SignatureDefParam> arguments_;
  std::vector<SignatureDefParam> returns_;
};

}  // namespace tensorflow

namespace tensorflow {

SignatureDefParam::SignatureDefParam(std::string name, TensorSpec spec)
    : name_(std::move(name)), spec_(std::move(spec)) {}

const std::string& SignatureDefParam::name() const { return name_; }

const TensorSpec& SignatureDefParam::spec() const { return spec_; }

SignatureDefFunctionMetadata::SignatureDefFunctionMetadata(
    std::vector<SignatureDefParam> arguments,

                                       TensorSpec(*named_param.second)));
  }
  std::sort(result.begin(), result.end(),
            [](const SignatureDefParam& x, const SignatureDefParam& y) {
              return x.name() < y.name();
            });

  return result;
}

// SignatureDefArgsFromInputs takes the "canonicalized_input_signature"

#include "tensorflow/c/experimental/saved_model/core/signature_def_function_metadata.h"

typedef struct TF_SignatureDefParamList TF_SignatureDefParamList;

namespace tensorflow {

DEFINE_CONVERSION_FUNCTIONS(std::vector<SignatureDefParam>,
                            TF_SignatureDefParamList)

}  // namespace tensorflow

#include "tensorflow/c/experimental/saved_model/core/signature_def_function_metadata.h"

typedef struct TF_SignatureDefParam TF_SignatureDefParam;

namespace tensorflow {

DEFINE_CONVERSION_FUNCTIONS(tensorflow::SignatureDefParam, TF_SignatureDefParam)

}  // namespace tensorflow