code: def test_fit_eval_creator(self):
      data_creator = get_train_data_creator()
      validation_data_creator = get_val_data_creator()
      modelBuilder_keras = KerasModelBuilder(model_creator_keras)
      model = modelBuilder_keras.build(
          config={
              "lr": 1e-2,
              "batch_size": 32,
          }
      )
      val_result = model.fit_eval(
          data=data_creator,
          validation_data=validation_data_creator,
          metric="mse",
          epochs=20,
      )
      assert val_result.get("mse")
  
file_path: BigDL/python/orca/test/bigdl/orca/automl/model/test_base_keras_model.py
imports: from unittest import TestCase
  from bigdl.orca.automl.model.base_keras_model import KerasBaseModel, KerasModelBuilder
  import numpy
  import tensorflow
  import pytest
label_desc: Use image node_id 2 for calling the TestBaseKerasModel obj's underlying member method code with example usage: obj.test_fit_eval_creator() without return types