code: def _maybe_register_cmd_notify():
      port = _try_cmd_notify_port()
      if port:
          from guild import cmd_notify
  
          cmd_notify.init_cmd_context_handler(port)
  
imports: import logging
  import os
  from guild import cli
  from guild import config
  from guild import log
label_desc: Use image node_id 15 for calling a global function with example usage: _maybe_register_cmd_notify() without return types