function der_dewPressure_Txi extends TILMedia.BaseClasses.PartialVLEFluidObjectFunction; input SI.Temperature T "Temperature"; input SI.MassFraction[:] xi "Mass fractions of the first nc-1 components"; input TILMedia.Internals.TILMediaExternalObject vleFluidPointer; input Real der_T "Temperature"; input Real[:] der_xi "Mass fractions of the first nc-1 components"; output Real der_p_dew "Pressure at dew point"; end der_dewPressure_Txi;