//-------------------------------------------------------------------------
/// <summary>
/// Calculates the present value sensitivity to the strike value.
/// <para>
/// The present value sensitivity of the leg is the sensitivity of the present value to the strike value.
/// This is not relevant for CMS coupons and an exception is thrown in the underlying pricer.
///
/// </para>
/// </summary>
/// <param name="cmsLeg"> the CMS leg </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="swaptionVolatilities"> the swaption volatilities </param>
/// <returns> the present value sensitivity </returns>
public virtual double presentValueSensitivityStrike(ResolvedCmsLeg cmsLeg, RatesProvider ratesProvider, SabrSwaptionVolatilities swaptionVolatilities)
{
validate(ratesProvider, swaptionVolatilities);
//JAVA TO C# CONVERTER TODO TASK: Most Java stream collectors are not converted by Java to C# Converter:
return(cmsLeg.CmsPeriods.Select(cmsPeriod => cmsPeriodPricer.presentValueSensitivityStrike(cmsPeriod, ratesProvider, swaptionVolatilities)).collect(Collectors.summingDouble(double?.doubleValue)));
}