code: def stop(self):
      self._to_stop = True
  
imports: import time
  from mindsdb_sql.parser.ast import Identifier, Select, Insert
  from mindsdb.utilities import log
  from mindsdb.utilities.context import context
  from .types import ChatBotMessage, BotException
label_desc: Use image node_id 5 for calling the MessageCountPolling obj's underlying member method code with example usage: obj.stop() without return types