code: def _poll_for_refresh(self, check_id):
          
          logger.warning('Polling for TA check %s refresh...', check_id)
          if self.refresh_timeout is None:
              # no timeout...
              cutoff = datetime_now() + timedelta(days=365)
          else:
              cutoff = datetime_now() + timedelta(seconds=self.refresh_timeout)
          last_status = None
          while datetime_now() <= cutoff:
              logger.debug('Checking refresh status')
              status = self.conn.describe_trusted_advisor_check_refresh_statuses(
                  checkIds=[check_id]
              )['statuses'][0]['status']
              if status in ['success', 'abandoned']:
                  logger.info('Refresh status: %s; done polling', status)
                  break
              if status == 'none' and last_status not in ['none', None]:
                  logger.warning('Trusted Advisor check refresh status went '
                                 'from "%s" to "%s"; refresh is either complete '
                                 'or timed out on AWS side. Continuing',
                                 last_status, status)
                  break
              last_status = status
              logger.info('Refresh status: %s; sleeping 30s', status)
              sleep(30)
          else:
              logger.error('Timed out waiting for TA Check refresh; status=%s',
                           status)
          logger.info('Done polling for check refresh')
          result, last_dt = self._get_check_result(check_id)
          logger.debug('Check shows last refresh time of: %s', last_dt)
          return result
docs: Given a Trusted Advisor check_id that has just been refreshed, poll
          until the refresh is complete. Once complete, return the check result.
  
          :param check_id: the Trusted Advisor check ID
          :type check_id: str
          :returns: dict check result. The return value of
            :py:meth:`Support.Client.describe_trusted_advisor_check_result`
          :rtype: dict