saveError(messages -> messages.addErrorsUnknownVersionForUpgrade(GLOBAL));
        }
        return redirect(getClass());
    }

    private void upgradeFrom13_0() {
        UpgradeUtil.addData(searchEngineClient, ".fess_config.scheduled_job", "label_updater",

    CompareTensors(out0, expected_out0);
    CompareTensors(out1, expected_out1);
  }

  void CompareTensors(TF_Tensor* a, TF_Tensor* b) {
    float* a_data = static_cast<float*>(TF_TensorData(a));
    float* b_data = static_cast<float*>(TF_TensorData(b));
    EXPECT_EQ(*a_data, *b_data);
  }

  void AddGradients(bool grad_inputs_provided, const char* prefix,
                    TF_Output* inputs, int ninputs, TF_Output* outputs,