code: def testDetectHandlerMissing(self):
      self.flags_dict[labels.ENGINE_FLAG] = "auto"
      self.assertIs(
          type(handler_factory.detect_handler(self.flags_dict)),
          local_handler.LocalHandler,
      )
  
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 9 for calling the HandlerFactoryTest obj's underlying member method code with example usage: obj.testDetectHandlerMissing() without return types