code: public Calendar setWeekData(WeekData wdata) {
          setFirstDayOfWeek(wdata.firstDayOfWeek);
          setMinimalDaysInFirstWeek(wdata.minimalDaysInFirstWeek);
  
          weekendOnset       = wdata.weekendOnset;
          weekendOnsetMillis = wdata.weekendOnsetMillis;
          weekendCease       = wdata.weekendCease;
          weekendCeaseMillis = wdata.weekendCeaseMillis;
          return this;
      }
docs: <strong>[icu]</strong> Set data in this calendar based on the WeekData input.
  @param wdata The week data to use
  @return this, for chaining