.AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.MassTransfer.PartialMassTransfer.Medium .AixLib.Fluid.MassExchangers.MembraneBasedEnthalpyExchangers.BaseClasses.MassTransfer.PartialMassTransfer.MediumMedium in the component
package Medium = Modelica.Media.Interfaces.PartialMedium;