code: def testCreateHandlerAirflow(self):
      try:
          from tfx.tools.cli.handler import (
              airflow_handler,
          )  # pylint: disable=g-import-not-at-top
      except ImportError:
          self.skipTest("Airflow is not available.")
  
      self.flags_dict[labels.ENGINE_FLAG] = "airflow"
      with mock.patch.object(
          airflow_handler, "AirflowHandler", autospec=True
      ) as mock_airflow_handler:
          handler_factory.create_handler(self.flags_dict)
          mock_airflow_handler.assert_called_once_with(self.flags_dict)
  
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 3 for calling the HandlerFactoryTest obj's underlying member method code with example usage: obj.testCreateHandlerAirflow() without return types