code: def can_fetch(self, url_info: URLInfo, user_agent: str):
          '''Return whether the URL can be fetched.'''
          key = self.url_info_key(url_info)
  
          parser = self._parsers[key]
          return parser.is_allowed(user_agent, url_info.urlf can_fetch(self, url_info: URLInfo, user_agent: str):
          '''Return whether the URL can be fetched.'''
          key = self.url_info_key(url_info)
  
          parser = self._parsers[key]
          return parser.is_allowed(user_agent, url_info.url)
docs: Return whether the URL can be fetched.