< All Topics Main Developer Guide Assembly Derived Types Derived Types PostedNovember 5, 2021 UpdatedNovember 5, 2021 ByKasper Vestrup To create a list that contains all derived types just call: Experior.Core.Assemblies.Assembly.DerivedItems<TDerived>The example below shows how to create a list of all Feeders in the current model: var feeders = Experior.Core.Assemblies.Assembly.DerivedItems<Experior.Catalog.Logistic.Feeder>();