code: def add(self, coordinator):
      self._coordinators.append(coordinator)
  
imports: import logging
  import threading
  import atexit
  import time
  import collections
  import traceback
  from abc import ABCMeta, abstractmethod
label_desc: Use image node_id 2 for calling the GlobalWorkerCoordinator obj's underlying member method code with example usage: obj.add(coordinator) without return types