class DiscountingNotionalExchangePricer implements SwapPaymentEventPricer<NotionalExchange> {

  @Override
  public PointSensitivityBuilder presentValueSensitivity(NotionalExchange event, RatesProvider provider) {
    return paymentPricer.presentValueSensitivity(event.getPayment(), provider);
  }

  public  DiscountingNotionalExchangePricer(DiscountingPaymentPricer paymentPricer);

}