code: def clear_all_cookies(self, path: str = "/", domain: str = None) -> None:
          
          for name in self.request.cookies:
              self.clear_cookie(name, path=path, domain=domain)
docs: Deletes all the cookies the user sent with this request.
  
          See `clear_cookie` for more information on the path and domain
          parameters.
  
          Similar to `set_cookie`, the effect of this method will not be
          seen until the following request.
  
          .. versionchanged:: 3.2
  
             Added the ``path`` and ``domain`` parameters.