class YieldAndDiscountCurve implements InterestRateModel<Double>, Serializable {

public abstract double[] getInterestRateParameterSensitivity(final double time)public abstract double[] getInterestRateParameterSensitivity(final double time);

public abstract double[] getInterestRateParameterSensitivity(final double time)public  YieldAndDiscountCurve(final String name);

}