code: def open_if_main(*args):
      return open_if_master(*args)
  
imports: import contextlib
  import logging
  import os
  import pickle
  import socket
  import subprocess
  import warnings
  from itertools import chain
  import torch
  from mmf.common.registry import registry
  from torch import distributed
label_desc: Use image node_id 21 for calling a global function with example usage: open_if_main() and returns: open_if_master