When used with JBoss Retro, we will replace access to Constructor.getGenericParameterTypes() with a call to some other class that does this. We will also replace all occurrences of java.lang.reflect.Type with org.jboss.lang.reflect.Type etc. The "some other class that does this" will need to use javassist to get hold of the generic info, similarly to how the JBoss Retro AnnotationHelper uses javassist to get hold of the annotations from the bytecode attributes. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002298#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...