When setting the org.jboss.weld.se.shutdownHook property programmatically, the following warning is logged:

WARN: WELD-001904: Unsupported configuration key found and ignored: org.jboss.weld.se.shutdownHook

This can be reproduced with the org.jboss.weld.environment.se.test.shutdown.hook.ShutdownHookNotRegisteredBuilderTest test.