code: public boolean areAllDaysExcluded ()
    {
      return isDayExcluded (Calendar.SUNDAY) &&
             isDayExcluded (Calendar.MONDAY) &&
             isDayExcluded (Calendar.TUESDAY) &&
             isDayExcluded (Calendar.WEDNESDAY) &&
             isDayExcluded (Calendar.THURSDAY) &&
             isDayExcluded (Calendar.FRIDAY) &&
             isDayExcluded (Calendar.SATURDAY);
    }
docs: <p>
  Check if all week days are excluded. That is no day is included.
  </p>
  
  @return boolean