class_docstr: A ZMQ socket wrapper
docstr: Test whether the channel is alive.
code: def is_alive(self) -> bool:
      """Test whether the channel is alive."""
      return self.socket is not None
  
imports: import asyncio
  import atexit
  import time
  import typing
  from queue import Empty
  from threading import Event, Thread
  import zmq.asyncio
  from jupyter_core.utils import ensure_async
  from ._version import protocol_version_info
  from .channelsabc import HBChannelABC
  from .session import Session
label_desc: Use image node_id 7 for calling the ZMQSocketChannel obj's underlying member method code with example usage: obj.is_alive() and returns: unknown