To be honest it is already hard to support a single generic type with GUI, serialization and AOT 🙂 and double templates like this are definetely a lot harder. With that said, I am currently looking for a way to be able to add a GenericTypeDefinition into the Preferred Types List and by doing that, allow “open” generic type variables in the blackboard and in the menu of the “Add Variable” blackboard, to select a closed definition (based on constraints of the generic type definition) similar to how it is done for Lists<T> for example currently.
It is somewhat complex, but I hope to manage it soon. Will that work for you?
Gavalakis
