code: def __init__(self, host, client_id, namespace):
      config = {
          "host": host,
          "client_id": client_id,
          "namespace": namespace,
      }  # pylint: disable=invalid-name, unused-variable
      self._output_dir = os.path.join(
          tempfile.gettempdir(), "output_dir"
      )
  
imports: import os
  import sys
  import tempfile
  from unittest import mock
  import tensorflow
  from tfx.tools.cli import labels
  from tfx.tools.cli.handler import beam_handler
  from tfx.tools.cli.handler import handler_factory
  from tfx.tools.cli.handler import local_handler
label_desc: Use image node_id 1 to create a new _MockClientClass object  with example: obj = _MockClientClass(host, client_id, namespace)