Security configuration principal-role mapping

[Rodger]

Previously and in a common way, we do  principal-role mapping in a
deployment plan (such as geronimo-web.xml,openejb-jar.xml),
like:

<role-mappings>
        <role role-name="user">
            <principal
class="o.a.g.s.r.providers.GeronimoGroupPrincipal" name="UserGrp"/>
        </role>
...
</role-mappings>

But in Geronimo2.2 , after a jira
https://issues.apache.org/jira/browse/GERONIMO-4523
It seems that we can do the principal-role mapping without the need for
Geronimo-specific deployment plans.
Has the feature been implemented? If so, how to do the mapping?
-- 
Best Regards,
Rodger.