public Loan(decimal netAmount, int totalPaymentsCount, /* LoanPeriodType periodType,*/ double annualInterestRate, [CanBeNull] IRounder rounder = null)
{
Verifiers.ArgVerify(netAmount > 0, "The amount of the loan can't be less or equal to 0", nameof(netAmount));
Verifiers.ArgVerify(totalPaymentsCount > 0, "The number of payments over the life of the loan can't be less or equal to 0", nameof(netAmount));
Verifiers.ArgVerify(annualInterestRate > 0, "(The Annual Percentage Rate can't be less or equal to 0", nameof(netAmount));
_netAmount = netAmount;
TotalPaymentsCount = totalPaymentsCount;
//_periodType = periodType;
InterestRate = annualInterestRate / 100 / TotalPaymentsCount;
_rounder = rounder ?? new DefaultRounder();
}