Is there a new Usermod system?

Hi,
After a few months break I pulled the latest 0.15 release for my WLED-branch and now my compiling throws these errors/hints:


On the website I couldn’t find a new tutorial, how to set up usermods, so I’m confused now?

How am I supposed to get this working?

Really appreciate you help :folded_hands:
Thanks,
Hannes

if you look at code for 0.15, you can see how other usermods do it:
UsermodManager::add(new StairwayWipeUsermod());

be aware that it was recently updated (again) in 0.16