code: def _run(self):
      asyncio.set_event_loop(self.loop)
      self._stopped = asyncio.Event()
      self.loop.run_until_complete(self._stopped.wait())
  
file_path: mars/mars/lib/aio/isolation.py
imports: import asyncio
  import atexit
  import threading
  from typing import Dict, Optional
label_desc: Use image node_id 2 for calling the Isolation obj's underlying member method code with example usage: obj._run() without return types