public async Task <SavingsTransaction> CreateSavingsTransactionWhen(BankTransferAdded notification)
        {
            var isSavingsAccount =
                await _savingsAccountRepository.IsSavingsAccount(notification.Iban);

            if (isSavingsAccount)
            {
                var savingsTransaction = _savingsTransactionFactory.CreateFrom(SavingsTransactionType.BankTransfer, notification.Value, notification.PaymentDate, notification.RecipientName, notification.Details, notification.BankTransferId);
                return(savingsTransaction);
            }

            return(null);
        }
        public async Task <Income> CreateIncomeWhen(CollectionAdded notification)
        {
            var isSavingsAccount =
                await _savingsAccountRepository.IsSavingsAccount(notification.FromIban);

            if (isSavingsAccount)
            {
                return(null);
            }

            var income = _incomeFactory.CreateFrom(IncomeType.Collection, notification.Value, notification.IncomeDate, notification.From, notification.FromIban, notification.Details, notification.CollectionId);

            return(income);
        }