/**
  * Sets the first day of week.
  *
  * @param firstDayOfWeek The first day of the week conforming to the {@link CalendarView} APIs.
  * @see Calendar#SUNDAY
  * @see Calendar#MONDAY
  * @see Calendar#TUESDAY
  * @see Calendar#WEDNESDAY
  * @see Calendar#THURSDAY
  * @see Calendar#FRIDAY
  * @see Calendar#SATURDAY
  * @attr ref android.R.styleable#DatePicker_firstDayOfWeek
  */
 public void setFirstDayOfWeek(int firstDayOfWeek) {
   if (firstDayOfWeek < Calendar.SUNDAY || firstDayOfWeek > Calendar.SATURDAY) {
     throw new IllegalArgumentException("firstDayOfWeek must be between 1 and 7");
   }
   mDelegate.setFirstDayOfWeek(firstDayOfWeek);
 }