code: def get_result(self):
          
          result = get_json_from_remote_server(self.call)
          referrers = list(result)
          for referrer in referrers:
              referrer['sum_visit_length'] = stringify_seconds(referrer['sum_visit_length'])
          return sorted(referrers, key=itemgetter('nb_visits'), reverse=True)[0:10]
docs: Perform the call and return a list of referrers