code: def barrier(self):
      # Barrier has special semantics
      self._send_recv(_store_actions.Barrier())
  
imports: import atexit
  from ctypes import sizeof
  import multiprocessing
  import threading
  import socket
  import time
  from cupyx.distributed import _klv_utils
  from cupyx.distributed import _store_actions
label_desc: Use image node_id 5 for calling the TCPStoreProxy obj's underlying member method code with example usage: obj.barrier() without return types