public Tuple <Payment, int> RegisterVacation(VacationDto vacationData)
        {
            Payment payment = FindById(vacationData.idPayment);

            if (payment.VacationList.Count >= 3)
            {
                throw new SgException("VacationLimit");
            }
            Vacation vacation = new Vacation
            {
                Payment  = payment,
                InitDate = vacationData.initDate,
                EndDate  = vacationData.endDate,
            };

            payment.VacationList.Add(vacation);
            if (payment.GetVacationDays() > 30)
            {
                throw new SgException("VacationDaysLimit");
            }
            Save(payment);
            return(Tuple.Create(payment, vacation.GetDuration().Days));
        }