code: def _finalize_join(twr):
      debug("joining queue thread")
      thread = twr()
      if thread is not None:
          thread.join()
          debug("... queue thread joined")
      else:
          debug("... queue thread already dead")
  
imports: import sys
  import os
  import threading
  import collections
  import time
  import types
  import weakref
  import errno
  from queue import Empty, Full
  import _multiprocessing
  from .None import connection
  from .None import context
  from .util import debug, info, Finalize, register_after_fork, is_exiting
label_desc: Use image node_id 17 for calling the Queue obj's underlying member method code with example usage: obj._finalize_join(twr) without return types