const AbstractOperation* value) override;
  Status SetAttrFunctionName(const char* attr_name, const char* value,
                             size_t length) override;
  Status SetAttrTensor(const char* attr_name,
                       AbstractTensorInterface* tensor) override;
  Status SetAttrStringList(const char* attr_name, const void* const* values,

      "SetAttrFunctionName has not been implemented "
      "yet.");
}
Status TapeOperation::SetAttrTensor(const char* attr_name,
                                    AbstractTensorInterface* tensor) {
  return tensorflow::errors::Unimplemented(
      "SetAttrTensor has not been implemented yet.");
}
Status TapeOperation::SetAttrStringList(const char* attr_name,

                                 const AbstractOperation* value) = 0;
  virtual Status SetAttrFunctionName(const char* attr_name, const char* value,
                                     size_t length) = 0;
  virtual Status SetAttrTensor(const char* attr_name,
                               AbstractTensorInterface* tensor) = 0;
  virtual Status SetAttrStringList(const char* attr_name,
                                   const void* const* values,

Status SetAttrFunctionName(AbstractOperation*, const char* attr_name,
                           const char* value, size_t length, ForwardOperation*);
Status SetAttrTensor(AbstractOperation*, const char* attr_name,
                     AbstractTensorInterface* tensor, ForwardOperation*);
Status SetAttrStringList(AbstractOperation*, const char* attr_name,

    op_->node_builder.Attr(attr_name, func_name);
    return absl::OkStatus();
  }
  Status SetAttrTensor(const char* attr_name,
                       AbstractTensorInterface* tensor) override {
    return tensorflow::errors::Unimplemented(
        "SetAttrTensor has not been implemented yet.");
  }
  Status SetAttrStringList(const char* attr_name, const void* const* values,

      "SetAttrFunctionName has not been implemented "
      "yet.");
}
Status SetAttrTensor(AbstractOperation* op_, const char* attr_name,
                     AbstractTensorInterface* tensor,
                     ForwardOperation* forward_op_) {
  return tensorflow::errors::Unimplemented(
      "SetAttrTensor has not been implemented yet.");
}
Status SetAttrStringList(AbstractOperation* op_, const char* attr_name,

  return op;
}

void ConstHelper(TF_Tensor* t, TF_Graph* graph, TF_Status* s, const char* name,
                 TF_Operation** op) {
  TF_OperationDescription* desc = TF_NewOperation(graph, "Const", name);
  TF_SetAttrTensor(desc, "value", t, s);
  ASSERT_EQ(TF_OK, TF_GetCode(s)) << TF_Message(s);
  TF_SetAttrType(desc, "dtype", TF_TensorType(t));
  *op = TF_FinishOperation(desc, s);
  ASSERT_EQ(TF_OK, TF_GetCode(s)) << TF_Message(s);

                              const float* values, const char* name) {
    unique_tensor_ptr tensor(FloatTensor2x2(values), TF_DeleteTensor);
    TF_OperationDescription* desc = TF_NewOperation(graph, "Const", name);
    TF_SetAttrTensor(desc, "value", tensor.get(), s);
    if (TF_GetCode(s) != TF_OK) return nullptr;
    TF_SetAttrType(desc, "dtype", TF_FLOAT);
    TF_Operation* op = TF_FinishOperation(desc, s);

                         TF_Status* status) {
  tensorflow::Tensor t;
  status->status = TF_TensorToTensor(tensor, &t);
  tensorflow::TensorInterface interface(t);
  status->status = tensorflow::unwrap(op)->SetAttrTensor(attr_name, &interface);
}

void TFE_OpSetAttrStringList(TFE_Op* op, const char* attr_name,
                             const void* const* values, const size_t* lengths,
                             int num_values) {

    TF_OperationDescription* desc, const char* attr_name,
    const void* const* protos, const size_t* proto_lens, int num_shapes,
    TF_Status* status);

TF_CAPI_EXPORT extern void TF_SetAttrTensor(TF_OperationDescription* desc,
                                            const char* attr_name,
                                            TF_Tensor* value,
                                            TF_Status* status);