code: def set_webhook(self, webhook_path: Optional[str] = None, request_handler: Any = WebhookRequestHandler,
                      route_name: str = DEFAULT_ROUTE_NAME, web_app: Optional[Application] = None):
          
          self._prepare_webhook(webhook_path, request_handler, route_name, web_app)
          self.loop.run_until_complete(self._startup_webhook())
docs: Set webhook for bot
  
          :param webhook_path: Optional[str] (default: None)
          :param request_handler: Any (default: WebhookRequestHandler)
          :param route_name: str Name of webhook handler route (default: 'webhook_handler')
          :param web_app: Optional[Application] (default: None)
          :return: