code: def hostname(self) -> str:
      # TODO: This is probably not the right way to retrieve
      # the intended hostname.
      return socket.gethostname()
  
file_path: horovod/horovod/ray/worker.py
imports: from typing import Dict, List
  import socket
  import ray
  import os
  from horovod.ray import ray_logger
label_desc: Use image node_id 3 for calling the BaseHorovodWorker obj's underlying member method code with example usage: obj.hostname() and returns: socket