Why does it have to be on a MutableX in the first place? I guess having a custom interface is OK, but then you need to separate your AOP code as well, to have this part in configurable (depending on the actuall Reflect impl) class. e.g. org.jboss.aop.bodyt.BodyTranslator org.jboss.aop.bodyt.javassist.JavassistBodyTranslator org.jboss.aop.bodyt.cglib.CGLibBodyTranslator View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4215128#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...