public void serialize(LittleEndianOutput out) {
    _range.serialize(out);

    _guid.serialize(out);
    out.writeInt(0x00000002); // TODO const
    out.writeInt(_linkOpts);

    if ((_linkOpts & HLINK_LABEL) != 0) {
      out.writeInt(_label.length());
      StringUtil.putUnicodeLE(_label, out);
    }
    if ((_linkOpts & HLINK_TARGET_FRAME) != 0) {
      out.writeInt(_targetFrame.length());
      StringUtil.putUnicodeLE(_targetFrame, out);
    }

    if ((_linkOpts & HLINK_URL) != 0 && (_linkOpts & HLINK_UNC_PATH) != 0) {
      out.writeInt(_address.length());
      StringUtil.putUnicodeLE(_address, out);
    }

    if ((_linkOpts & HLINK_URL) != 0 && (_linkOpts & HLINK_UNC_PATH) == 0) {
      _moniker.serialize(out);
      if (URL_MONIKER.equals(_moniker)) {
        if (_uninterpretedTail == null) {
          out.writeInt(_address.length() * 2);
          StringUtil.putUnicodeLE(_address, out);
        } else {
          out.writeInt(_address.length() * 2 + TAIL_SIZE);
          StringUtil.putUnicodeLE(_address, out);
          writeTail(_uninterpretedTail, out);
        }
      } else if (FILE_MONIKER.equals(_moniker)) {
        out.writeShort(_fileOpts);
        out.writeInt(_shortFilename.length());
        StringUtil.putCompressedUnicode(_shortFilename, out);
        writeTail(_uninterpretedTail, out);
        if (_address == null) {
          out.writeInt(0);
        } else {
          int addrLen = _address.length() * 2;
          out.writeInt(addrLen + 6);
          out.writeInt(addrLen);
          out.writeShort(0x0003); // TODO const
          StringUtil.putUnicodeLE(_address, out);
        }
      }
    }
    if ((_linkOpts & HLINK_PLACE) != 0) {
      out.writeInt(_textMark.length());
      StringUtil.putUnicodeLE(_textMark, out);
    }
  }
  public void serialize(LittleEndianOutput out) {

    int formulaSize =
        field_2_refPtg == null ? field_2_unknownFormulaData.length : field_2_refPtg.getSize();
    int idOffset = getStreamIDOffset(formulaSize);
    int dataSize = getDataSize(idOffset);

    out.writeShort(sid);
    out.writeShort(dataSize);

    out.writeShort(idOffset);
    out.writeShort(formulaSize);
    out.writeInt(field_1_unknown_int);

    int pos = 12;

    if (field_2_refPtg == null) {
      out.write(field_2_unknownFormulaData);
    } else {
      field_2_refPtg.write(out);
    }
    pos += formulaSize;

    int stringLen;
    if (field_4_ole_classname == null) {
      // don't write 0x03, stringLen, flag, text
      stringLen = 0;
    } else {
      out.writeByte(0x03);
      pos += 1;
      stringLen = field_4_ole_classname.length();
      out.writeShort(stringLen);
      pos += 2;
      if (stringLen > 0) {
        out.writeByte(field_3_unicode_flag ? 0x01 : 0x00);
        pos += 1;

        if (field_3_unicode_flag) {
          StringUtil.putUnicodeLE(field_4_ole_classname, out);
          pos += stringLen * 2;
        } else {
          StringUtil.putCompressedUnicode(field_4_ole_classname, out);
          pos += stringLen;
        }
      }
    }

    // pad to next 2-byte boundary (requires 0 or 1 bytes)
    switch (idOffset - (pos - 6)) { // 6 for 3 shorts: sid, dataSize, idOffset
      case 1:
        out.writeByte(field_4_unknownByte == null ? 0x00 : field_4_unknownByte.intValue());
        pos++;
      case 0:
        break;
      default:
        throw new IllegalStateException("Bad padding calculation (" + idOffset + ", " + pos + ")");
    }

    if (field_5_stream_id != null) {
      out.writeInt(field_5_stream_id.intValue());
      pos += 4;
    }
    out.write(field_6_unknown);
  }