code: def thread_ident(self):
      return self._thread_ident
  
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 4 for calling the Isolation obj's underlying member method code with example usage: obj.thread_ident() and returns: self