Make sure that the @Persistable annotation also works correctly on overloaded methods

Currently, the code below might have or have not the @Persistable correctly added to doAction, as it depends on which method name is added with which annotations when :

@Persistable
public void doAction(HstRequest request, HstResponse response) throws HstComponentException {

@SomeOtherAnnotation
publlc void doAction() { }

Obviously, there are now two doAction methods having their own annotations