code: def cancel_join_thread(self):
      debug("Queue.cancel_join_thread()")
      self._joincancelled = True
      try:
          self._jointhread.cancel()
      except AttributeError:
          pass
  
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 15 for calling the Queue obj's underlying member method code with example usage: obj.cancel_join_thread() without return types