docs: @Override
    public void remove(final int x) {
      final short hb = BufferUtil.highbits(x);
      final int i = highLowContainer.getIndex(hb);
      if (i < 0) {
        return;
      }
      getMappeableRoaringArray().setContainerAtIndex(i,
          highLowContainer.getContainerAtIndex(i).remove(BufferUtil.lowbits(x)));
      if (highLowContainer.getContainerAtIndex(i).isEmpty()) {
        getMappeableRoaringArray().removeAtIndex(i);
      }
    }