code: def __call__(self, weight, id):
      return ANullContextManager()
  
file_path: hail/batch/batch/semaphore.py
imports: import asyncio
  import collections
  import logging
  from typing import Deque, Tuple
label_desc: Use image node_id 1 for calling the NullWeightedSemaphore obj's underlying member method code with example usage: obj.__call__(weight, id) and returns: ANullContextManager