.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourDensity_phxi .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourDensity_phxipartial function vapourDensity_phxi = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.vapourDensity_phxi;