code: def check_if_ready(self):
          
          try:
              results = self.manager.check(self.results_id)
          except exceptions.ResultsNotReady as e:
              self._is_ready = False
              self._not_ready_exception = e
          except exceptions.ResultsExpired as e:
              self._is_ready = True
              self._expired_exception = e
          else:
              failures = self.get_failed_requests(results)
              members = self.get_new_members(results)
              self.results = self.__class__.Results(list(members), list(failures))
              self._is_ready = True
              self._not_ready_exception = None
docs: Check for and fetch the results if ready.