Interceptor with generics, applied on a bean, isn't invoked

A user has reported that a interceptor which involves generics and subclassing, as follows:

public abstract class AbstractServiceInitializer<T> {
@PostConstruct
public void init(InvocationContext ctx) {
Object o = ctx.getTarget();
try

{ T service = (T) o; init(service); }

catch (ClassCastException e) {
log.warn("Class {} is not supported... doing nothing", o.getClass().getName());
return;
}
}
public abstract void init(T service);
}

public class MyEjbImplInitializer extends AbstractServiceInitializer<MyEjbImpl>{
@Override
public void init(MyEjbImpl service)

{ // specific init stuff }

}

doesn't get invoked when the interceptor is applied to a EJB.

Please see the referenced forum thread for details.