Tree widget in LRC SDK

Hi *,

has anyone managed to create a tree-like-widget in a LRC SDK view? I mean a widget to view/edit hierarchical data with the possibility to expand/collapse nodes in the list. Obviously there is no ready to use solution in the API, but I already saw some closed source plugins, which use similar widgets, and I was wondering if someone would share his approach. 🙂

Many thanks in advance.

Bastian