Looks like shillner is no longer maintaining the unleash-maven-plugin, see: https://github.com/shillner/unleash-maven-plugin/

So I think this Jenkins plug-in is also no longer maintained?

If so, it might be an idea to also add the "This plugin is up for adoption!" text to this plug-in so users know what they are getting into.

The unleash-maven-plugin does not work with Java 17 because the old Weld version it is using is incompatible. It will throw an exception which is fixed in newer versions, see: https://issues.redhat.com/browse/WELD-2572

So it is probably not a good idea for users to invest time in installing and using the plug-in when it has no future.