.Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.TransportWaterAir.MediumA .Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.TransportWaterAir.MediumAMedium in the duct
package MediumA = Buildings.Media.Air(extraPropertiesNames = {"CO2"});