docs: private int getDaysToNextMatch(WeekDay weekDay) {
  
          for (WeekDay wd : m_weekDays) {
              if (wd.compareTo(weekDay) > 0) {
                  return wd.toInt() - weekDay.toInt();
              }
          }
          return (m_weekDays.iterator().next().toInt() + (m_interval * I_CmsSerialDateValue.NUM_OF_WEEKDAYS))
              - weekDay.toInt();
      }