If I recall correctly, these methods were created back when the GPD manipulated the definition classes directly. After a while it became apparent that manipulating the definition classes directly was not practical. The only use case I can think of is to modify the definition after deployment. However, this requires much more than update and remove methods. IMO we should deprecate them. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4037662#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...