TODO: We should merge this withIStateTreeEditorPropertyBindingsOwnerandFStateTreeEditorPropertyBindings. CurrentlyFStateTreeEditorPropertyBindingsis meant to be used as a member for just to store things,IStateTreeEditorPropertyBindingsOwneris meant return model specific stuff, andIStateTreeBindingLookupis used in non-editor code and it cannot be inFStateTreeEditorPropertyBindingsbecause bindings don't know about the owner.