code: def stop(self):
      self.running = False
  
file_path: catboost/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/asyncio_win32.py
imports: from __future__ import unicode_literals
  from .base import EventLoop, INPUT_TIMEOUT
  from ..terminal.win32_input import ConsoleInputReader
  from .callbacks import EventLoopCallbacks
  from .asyncio_base import AsyncioTimeout
  import asyncio
label_desc: Use image node_id 3 for calling the Win32AsyncioEventLoop obj's underlying member method code with example usage: obj.stop() without return types