class OpeningHoursInterval {

    public int getNumberOfDays() {
        if (mEndDay == sNoEndDay) {
            return 1;
        }
        return (mEndDay - mStartDay) + 1;
    }

    public  OpeningHoursInterval(int startDay, int endDay, String openingHours);
    public  OpeningHoursInterval(int startDay, String openingHours);

}