"alesj" wrote : | I don't get this "instance of"? | Wouldn't ControllerContext implement this ServiceTracking mixin? | No, you can't add new methods to a public interface in a stable branch. It breaks any code that implements the interface directly rather than using the Abstract helper class (users of AbstractControllerContext should get the new methods with default implementations like I described above). MC-3.0.x would be the time when you can change the public api. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4267038#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...