code: def is_connected(self) -> bool:
      if self.client_worker is None:
          return False
      return self.client_worker.is_connected()
  
imports: import logging
  import os
  import sys
  import threading
  from typing import Any, Dict, List, Optional, Tuple
  import ray._private.ray_constants
  from ray._private.client_mode_hook import _explicitly_disable_client_mode, _explicitly_enable_client_mode
  from ray._private.ray_logging import setup_logger
  from ray.job_config import JobConfig
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 8 for calling the _ClientContext obj's underlying member method code with example usage: obj.is_connected() and returns: self, False