code: def get_arg(self):
      return self._arg
  
file_path: mars/mars/services/tests/test_svcs/test_svc1/supervisor.py
imports: from .....None import oscar
  from ....core import AbstractService
label_desc: Use image node_id 2 for calling the SvcActor1 obj's underlying member method code with example usage: obj.get_arg() and returns: self