outstandingLoanBalance = outstandingLoanBalance.minus(period.principalDue());
period.updateOutstandingLoanBalance(outstandingLoanBalance);
Money principalDue = Money.of(currency, period.principalDue());
Money interestDue = Money.of(currency, period.interestDue());
Money feeChargesDue = Money.of(currency, period.feeChargesDue());
Money penaltyChargesDue = Money.of(currency, period.penaltyChargesDue());
Money totalDue = principalDue.plus(interestDue).plus(feeChargesDue).plus(penaltyChargesDue);