.Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.BaseClasses.ZoneWithAHUConventional.MediumA .Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.BaseClasses.ZoneWithAHUConventional.MediumApackage MediumA = Buildings.Media.Air(extraPropertiesNames = {"CO2"});