code: def set_start_method(method):
      """Set multiprocess start method."""
      assert method in ("fork", "spawn", "forkserver")
      return multiprocessing.set_start_method(method)
  
file_path: espnet/espnet/distributed/pytorch_backend/launch.py
imports: import multiprocessing
  import os
  import signal
  import socket
  import time
label_desc: Use image node_id 1 for calling a global function with example usage: set_start_method(method) and returns: multiprocessing