code: def __init__(self, key, nic, manager):
      super(WorkerNotificationService, self).__init__(
          WorkerNotificationService.NAME, key, nic
      )
      self._manager = manager
  
imports: import os
  import threading
  from enum import IntFlag
  from horovod.runner.common.util import network, secret
  from horovod.runner.elastic.rendezvous import PUT_WORKER_ADDRESSES
  from horovod.runner.http.http_client import put_data_into_kvstore
label_desc: Use image node_id 1 to create a new WorkerNotificationService object from inherited base classes: network with example: obj = WorkerNotificationService(key, nic, manager)