public boolean occur(int weekNumber) { return (weekNumber % getWorkWeekNumber() == 0);
public boolean occur(int weekNumber, int maxWorkWeek) { int result = weekNumber % maxWorkWeek; if (result == 0) { result = maxWorkWeek; } return result == getWorkWeekNumber();
    public boolean occur(int weekNumber) {        return (weekNumber % getWorkWeekNumber() == 0);    }