private JsonArrayNodeBuilder getHolidayInRegion(Date begin, Date end, Region region) {
JsonArrayNodeBuilder builder = anArrayBuilder();
List<Holiday> holidays = calendarService.getHolidaysOnlyForRegion(begin, end, region);
for (Holiday holiday : holidays) {
builder.withElement(
aStringBuilder(dateToString(holiday.getCalDate().getCalDate(), VIEW_DATE_PATTERN)));
}
return builder;
}
