text: public void serialize(LittleEndianOutput out) {out.writeShort(field_1_number_of_sheets);if(isExternalReferences()) {StringUtil.writeUnicodeString(out, field_2_encoded_url);for (String field_3_sheet_name : field_3_sheet_names) {StringUtil.writeUnicodeString(out, field_3_sheet_name);}} else {int field2val = _isAddInFunctions ? TAG_ADD_IN_FUNCTIONS : TAG_INTERNAL_REFERENCES;out.writeShort(field2val);}}