code: def register_task(self, index, task_addresses, host_hash):
      self._send(RegisterTaskRequest(index, task_addresses, host_hash))
  
imports: import threading
  from horovod.runner.common.util import network
label_desc: Use image node_id 2 for calling the BasicDriverClient obj's underlying member method code with example usage: obj.register_task(index, task_addresses, host_hash) without return types