code: def unlock_file(path):
      """Unlock the file at the given path"""
      if the_boundary is None:
          return
      q = queue.Queue()
      start_lock_thread()
      __lock_queue.put((None, UNLOCK_REQUEST, path, q))
      result = q.get()
      if result != UNLOCK_OK:
          raise result
      lock_path = get_lock_path(path)
      os.remove(lock_path)
  
imports: import errno
  import json
  import logging
  import os
  import queue
  import sys
  import threading
  import uuid
  import numpy
  import zmq
  import cellprofiler_core.utilities.grid
  from cellprofiler_core.utilities.zmq._boundary import Boundary
  from cellprofiler_core.utilities.zmq.communicable.reply import LockStatusReply, Reply
  from cellprofiler_core.utilities.zmq.communicable.request import LockStatusRequest, Request
label_desc: Use image node_id 16 for calling a global function with example usage: unlock_file(path) without return types