docs: public static RoaringBitmap xor(final Iterator<? extends RoaringBitmap> bitmaps,
        final long rangeStart, final long rangeEnd) {
      rangeSanityCheck(rangeStart, rangeEnd);
      Iterator<RoaringBitmap> bitmapsIterator;
      bitmapsIterator = selectRangeWithoutCopy(bitmaps, rangeStart, rangeEnd);
      return FastAggregation.xor(bitmapsIterator);
    }