.TILMedia.Internals.GasConfigurations.AnalyticDerivatives.GasObjectFunctions.saturationMassFraction_pTxidg .TILMedia.Internals.GasConfigurations.AnalyticDerivatives.GasObjectFunctions.saturationMassFraction_pTxidgfunction saturationMassFraction_pTxidg = TILMedia.Internals.GasObjectFunctions.saturationMassFraction_pTxidg;