.BuildSysPro.IBPSA.Media.Specialized.Water.Examples.TemperatureDependentDensityDerivativeCheck.Medium .BuildSysPro.IBPSA.Media.Specialized.Water.Examples.TemperatureDependentDensityDerivativeCheck.Mediumpackage Medium = IBPSA.Media.Specialized.Water.TemperatureDependentDensity;