code: def notify_initial_registration_complete(self):
      self._send(NotifyInitialRegistrationCompleteRequest())
  
imports: import threading
  import time
  from bluefog.run.horovodrun.common.util import network
  from bluefog.run.horovodrun.common.util import safe_shell_exec
label_desc: Use image node_id 3 for calling the BasicTaskClient obj's underlying member method code with example usage: obj.notify_initial_registration_complete() without return types