docs: public static boolean intersects(final RoaringBitmap x1, final RoaringBitmap x2) {
      final int length1 = x1.highLowContainer.size(), length2 = x2.highLowContainer.size();
      int pos1 = 0, pos2 = 0;
  
      while (pos1 < length1 && pos2 < length2) {
        final short s1 = x1.highLowContainer.getKeyAtIndex(pos1);
        final short s2 = x2.highLowContainer.getKeyAtIndex(pos2);
        if (s1 == s2) {
          final Container c1 = x1.highLowContainer.getContainerAtIndex(pos1);
          final Container c2 = x2.highLowContainer.getContainerAtIndex(pos2);
          if (c1.intersects(c2)) {
            return true;
          }
          ++pos1;
          ++pos2;
        } else if (Util.compareUnsigned(s1, s2) < 0) { // s1 < s2
          pos1 = x1.highLowContainer.advanceUntil(s2, pos1);
        } else { // s1 > s2
          pos2 = x2.highLowContainer.advanceUntil(s1, pos2);
        }
      }
      return false;
    }