Quote Originally Posted by Daher View Post
the only choice i can see right now is to setup a 4th model which will use every model for its own subtree, but this seems too harsh to implement. I was wondering if someone can give me a hint about a simpler solution.
The simplest idea I can think of is to implement a simple proxy model that will add three fake top-level items and serve their children from real models. Shouldn't be more than 30 lines of code...