code: def lock(self):
      try:
          self._lock.acquire()
          yield
      finally:
          self._lock.release()
  
file_path: ColossalAI/examples/tutorial/opt/inference/cache.py
imports: from collections import OrderedDict
  from contextlib import contextmanager
  from threading import Lock
  from typing import Any, Dict, Hashable, List
label_desc: Use image node_id 4 for calling the ListCache obj's underlying member method code with example usage: obj.lock() without return types