code: def test_format_objective(
      self, objective, direction, expected_oracle_obj
  ):
      formatted_objective = utils.format_objective(objective, direction)
      self.assertEqual(formatted_objective, expected_oracle_obj)
  
imports: import copy
  from absl.testing import parameterized
  from keras_tuner.engine import hyperparameters
  from keras_tuner.engine import oracle
  from keras_tuner.engine import trial
  import tensorflow
  from tensorboard.plugins.hparams import api
  from tensorflow_cloud.tuner.tuner import utils
label_desc: Use image node_id 18 for calling the CloudTunerUtilsTest obj's underlying member method code with example usage: obj.test_format_objective(objective, direction, expected_oracle_obj) without return types