Not urgent, just something I noticed when looking at https://github.com/wildfly/wildfly/pull/12014/.

The org.jboss.metadata module just depends on and exports a bunch of other ones. It's jboss-api=private and It's only use within Wildfly is org.wildfly.extension.clustering.singleton which could presumably depend directly on what it needs.

We'd want to check some with dependent projects in case they use it and do any removal fairly early in a release cycle.