class CouponONArithmeticAverageSpreadSimplified extends Coupon {

  @Override
  public Coupon withNotional(double notional) {
    return null; // TODO
  }

  private  CouponONArithmeticAverageSpreadSimplified(Currency currency, double paymentTime, double paymentYearFraction, double notional, IndexON index, final double fixingPeriodStartTime,
      double fixingPeriodEndTime, double fixingPeriodAccrualFactor, final double spread);

}