I would like to add something like a listener to a projection annotation,
which will be notified when a folding will be extended. In dependence of the
information in this node which was expanded I would like to expand several
other nodes. All in all the extension should do a context related expansion
of folding elements.
My first idea was this extension where I was able to add my own folding
strategy. But I dont know how to go further....any ideas?