.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.densityDerivativeWRTspecificEnthalpy_phxi .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.densityDerivativeWRTspecificEnthalpy_phxipartial function densityDerivativeWRTspecificEnthalpy_phxi = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.densityDerivativeWRTspecificEnthalpy_phxi;