// subject to change. Primarily intended for internal libraries
TF_CAPI_EXPORT extern void TF_ColocateWith(TF_OperationDescription* desc,
                                           TF_Operation* op);

// Call some TF_SetAttr*() function for every attr that is not
// inferred from an input and doesn't have a default value you wish to
// keep.

// `value` must point to a string of length `length` bytes.

      absl::Span<const int64_t> input_tensor_id,
      absl::Span<const tensorflow::DataType> input_dtypes,
      const std::function<BackwardFunction*()>& backward_function_getter,
      const std::function<void(BackwardFunction*)>& backward_function_deleter);

  void DeleteTrace(int64_t tensor_id);

  // Consumes the internal state of the tape (so cannot be called more than