code: def _commit_timer_stopped(self, lCall):
          
          if self._commit_looper is not lCall:
              log.warning('_commit_timer_stopped with wrong timer:%s not:%s',
                          lCall, self._commit_looper)
          else:
              log.debug('_commit_timer_stopped: %s %s', lCall,
                        self._commit_looper)
              self._commit_looper = None
              self._commit_looper_d = None
docs: We're shutting down, clean up our looping call...