docs: @Override
    public int getCurrentBytes(final boolean compact) { //compact is ignored here
      final int preLongs = getCurrentPreambleLongs(true);
      final boolean empty = PreambleUtil.isEmpty(mem_);
      if (preLongs == 1) {
        return (empty) ? 8 : 16; //empty or singleItem
      }
      //preLongs > 1
      final int curCount = extractCurCount(mem_);
      return (preLongs + curCount) << 3;
    }