code: def testDoWithoutCustomCaipTuneArgs(self):
      executor = ai_platform_tuner_executor.Executor()
      self._exec_properties = {"custom_config": {}}
      with self.assertRaises(ValueError):
          executor.Do(
              self._inputs,
              self._outputs,
              self._serialize_custom_config_under_test(),
          )
  
imports: import copy
  import os
  from typing import Any, Dict
  from unittest import mock
  import tensorflow
  from tfx.extensions.google_cloud_ai_platform import constants
  from tfx.extensions.google_cloud_ai_platform.trainer import executor
  from tfx.extensions.google_cloud_ai_platform.tuner import executor
  from tfx.proto import tuner_pb2
  from tfx.types import standard_component_specs
  from tfx.utils import json_utils
  from tfx.utils import name_utils
  from tfx.utils import proto_utils
label_desc: Use image node_id 6 for calling the ExecutorTest obj's underlying member method code with example usage: obj.testDoWithoutCustomCaipTuneArgs() without return types