code: def ray_mock_dir():
      path = (
          os.path.join(
              ray._private.utils.get_user_temp_dir(),
              f"mock-client-{uuid.uuid4().hex[:4]}",
          )
          + os.sep
      )
      os.makedirs(path, exist_ok=True)
      try:
          yield path
      finally:
          shutil.rmtree(path)
  
imports: import os.path
  import shutil
  import uuid
  from unittest.mock import patch
  import pytest
  from ludwig.api import LudwigModel
  from ludwig.callbacks import Callback
  from ludwig.constants import ACCURACY, AUTO, BATCH_SIZE, EXECUTOR, MAX_CONCURRENT_TRIALS, TRAINER
  from ludwig.globals import HYPEROPT_STATISTICS_FILE_NAME
  from ludwig.hyperopt.results import HyperoptResults
  from ludwig.hyperopt.run import hyperopt
  from ludwig.hyperopt.utils import update_hyperopt_params_with_defaults
  from ludwig.schema.model_config import ModelConfig
  from tests.integration_tests.utils import binary_feature, create_data_set_to_use, generate_data, number_feature
label_desc: Use image node_id 3 for calling a global function with example usage: ray_mock_dir() without return types