A simulation extender is an object responsible for extending certain editor features with respect to a certain type of clothing simulation. The supported simulation factory class should be returned from GetSupportedSimulationFactoryClass. The engine will call into various interface functions to perform editor functions as outlined in the interface API As this is a modular feature it should be registered under FClothingSystemEditorInterfaceModule::ExtenderFeatureName To be accessible through the clothing editor interface module.