After some nice work by @koen.berends, the vegetation formula
of Vaestilae & Jaervelae (2017) and Jarvela (2004) has been
added to D-Flow FM. As an added bonus an error in the Baptist
formula (trachytope number 154) was also discovered. Tests and
documentation were included as well. The full test bench is now
running and without any update to this message, the functionality
should be available from version 63589 onwards. Thanks again Koen,
on behalf of the River Lab.