code: def if_main_process():
      """Checks if the current process is the main local process and authorized to run
      I/O commands. In DDP mode, the main local process is the one with LOCAL_RANK == 0.
      In standard mode, the process will not have `LOCAL_RANK` Unix var and will be
      authorized to run the I/O commands.
      """
      if "LOCAL_RANK" in os.environ:
          if os.environ["LOCAL_RANK"] == "":
              return False
          else:
              if int(os.environ["LOCAL_RANK"]) == 0:
                  return True
              return False
      return True
  
file_path: speechbrain/speechbrain/utils/distributed.py
imports: import datetime
  import os
  import torch
  from functools import wraps
label_desc: Use image node_id 2 for calling a global function with example usage: if_main_process() and returns: True, False, False, True