Hello, I have following problem in wicket 6 with trees: Constructor of class org.apache.wicket.extensions.markup.html.repeater.tree.AbstractTree have following signature: protected AbstractTree(String id, ITreeProvider<T> provider, IModel<Set<T>> state) The problem is in "IModel<Set<T>> state" argument and fact that Model.ofSet return IModel<Set<? extends C>>, so it's not possible directly pass IModel<Set<? extends C>> to constructor. It seems that either Model.ofSet should be changed or AbstractTree.
What do you think? Regards, Ilia
