.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.steamMassFraction_phxi .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.steamMassFraction_phxipartial function steamMassFraction_phxi = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.steamMassFraction_phxi;