public void AddPaymentRule(ISupplier supplier, ICustomer customer, BookingType bookingType, decimal percentage,
int daysOffset, BaseDate baseDate, PaymentType paymentType)
{
Supplier supp = (Supplier)supplier;
Customer cust = (Customer)customer;
supp.AddPaymentRule(cust, bookingType, percentage, daysOffset, baseDate, paymentType);
}
