function steamMassFraction_dTxi extends TILMedia.BaseClasses.PartialVLEFluidFunction; input SI.Density d "Density"; input SI.Temperature T "Temperature"; input SI.MassFraction[:] xi "Mass fractions of the first nc-1 components"; input TILMedia.Internals.VLEFluidName vleFluidName "VLEFluid name"; input Integer nc "Number of components"; output SI.MassFraction q "Vapor quality (steam mass fraction)"; end steamMassFraction_dTxi;