function dd_dxi_pT_pTxin extends TILMedia.BaseClasses.PartialGasObjectFunction; input SI.AbsolutePressure p "Pressure"; input SI.Temperature T "Temperature"; input SI.MassFraction xi[:] "Mass fraction"; input Integer compNo "Component ID"; input TILMedia.Internals.TILMediaExternalObject gasPointer; output Real dd_dxi_pT; end dd_dxi_pT_pTxin;