docs: @Override
    public long getLongSizeInBytes() {
      long size = 4;
      for (int i = 0; i < this.highLowContainer.size(); ++i) {
        if (this.highLowContainer.getContainerAtIndex(i) instanceof MappeableRunContainer) {
          MappeableRunContainer thisRunContainer =
              (MappeableRunContainer) this.highLowContainer.getContainerAtIndex(i);
          size += 4 + BufferUtil.getSizeInBytesFromCardinalityEtc(0, thisRunContainer.nbrruns, true);
        } else {
          size += 4 + BufferUtil
              .getSizeInBytesFromCardinalityEtc(this.highLowContainer.getCardinality(i), 0, false);
        }
      }
      return size;
    }