docs: ReadIteratorResource<Read, ReadGroupSet, Reference> queryForInterval(GA4GHQueryInterval interval) {
      try {
        return dataSource.getReads(readSetId, interval.getSequence(),
            interval.getStart(), interval.getEnd());
      } catch (Exception ex) {
        LOG.warning("Error getting data for interval " + ex.toString());
      }
      return null;
    }