code: def close(self) -> None:
      self._sub_socket.close()
      self._push_socket.close()
  
imports: import logging
  import os
  import selectors
  import signal
  import socket
  import subprocess
  import time
  from typing import Any, Callable, Dict, List, Optional, Tuple, Union
  import determined
label_desc: Use image node_id 5 for calling the ZMQBroadcastClient obj's underlying member method code with example usage: obj.close() without return types