code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self._ref = None
  
file_path: mars/mars/services/tests/test_svcs/test_svc2/supervisor.py
imports: from .....None import oscar
  from ....core import AbstractService
label_desc: Use image node_id 1 to create a new TestService2 object from inherited base classes: AbstractService with example: obj = TestService2()