docs: public IntervalFrequency getRefreshFrequency() {
          switch (mRefreshInterval) {
              case REALTIME_REFRESH_INTERVAL:
                  return IntervalFrequency.REALTIME;
              case HIGH_REFRESH_INTERVAL:
                  return IntervalFrequency.HIGH;
              case LOW_REFRESH_INTERVAL:
                  return IntervalFrequency.LOW;
              case MEDIUM_REFRESH_INTERVAL:
                  return IntervalFrequency.MEDIUM;
              default:
                  return IntervalFrequency.NONE;
          }
      }