code: def stop(self):
      all_success = True
      for c in self._coordinators:
          c._stop()
      for c in self._coordinators:
          success = c._wait_finish()
          all_success = all_success and success
      self._coordinators = []
      return all_success
  
imports: import logging
  import threading
  import atexit
  import time
  import collections
  import traceback
  from abc import ABCMeta, abstractmethod
label_desc: Use image node_id 6 for calling the GlobalWorkerCoordinator obj's underlying member method code with example usage: obj.stop() and returns: all_success