code: def _get_token_from_query_string(self, request, refresh_token):
          
          if refresh_token:
              query_string_token_name_key = "query_string_refresh_token_name"
          else:
              query_string_token_name_key = "query_string_access_token_name"
          query_string_token_name = getattr(
              self.config, query_string_token_name_key
          )
          return request.args.get(query_string_token_name(), None)
docs: Extract the token if present from the request args.