SABRFormulaData dataC = null;
SABRFormulaData dataB = sabrData;
SABRFormulaData dataA = null;
final Function1D<SABRFormulaData, Double> func = FUNCTION.getVolatilityFunction(optionData, forward);
FiniteDifferenceType fdType = null;
switch (param) {
case Strike:
final double strike = optionData.getStrike();
if (strike >= delta) {