.TILMedia.BaseClasses.PartialGasObjectFunctions.densityDerivativeWRTspecificEnthalpy_phxi .TILMedia.BaseClasses.PartialGasObjectFunctions.densityDerivativeWRTspecificEnthalpy_phxipartial function densityDerivativeWRTspecificEnthalpy_phxi = TILMedia.BaseClasses.PartialGasObjectFunctionPrototypes.densityDerivativeWRTspecificEnthalpy_phxi;