List of functions is ES

Hello,
Is there a way to list all functions (or eventually all “state fragment”) used in an xchange scenario diagram ?
The semantic browser does not display those in the Referenced Elements tab.
As the state framents eventually point toward the ES (Related diagrams), I would have thought the opposite would be posssible.
Otherwise, I was thinking of generating a doc with M2doc and manage this as an aql query.
Thanks,
Mathias