code: def assertNotPushed(self):
      self.assertDirectoryEmpty(self._serving_model_dir)
      self.assertDirectoryEmpty(self._model_push.uri)
      self.assertEqual(
          0, self._model_push.get_int_custom_property("pushed")
      )
  
imports: import json
  import os
  import tensorflow
  from tfx.components.pusher import executor
  from tfx.dsl.io import fileio
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import io_utils
  from tfx.utils import path_utils
label_desc: Use image node_id 6 for calling the ExecutorTest obj's underlying member method code with example usage: obj.assertNotPushed() without return types