.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourMassFraction_phxin .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourMassFraction_phxinpartial function vapourMassFraction_phxin = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.vapourMassFraction_phxin;