if(bdayType.hasExtendedParams()) {
boolean initWithParamTypes = bdayType.hasParams() || bdayType.hasExtendedParams();
buildExtendParameters(bdayType, initWithParamTypes, tmpSb);
}
ISOFormat isoFormat = bdayType.getISO8601Format();
tmpSb.append(":");
tmpSb.append(ISOUtils.formatISO8601Date(bdayType.getBirthday(), isoFormat));
String tmpBdayLine = tmpSb.toString();
String foldedBdayLine = VCardUtils.foldLine(tmpBdayLine, eol, foldingScheme);