This method expects a UserVo1 object. So amfPHP must receive a typed UserVo1 object, and the CustomClassConverter plugin
This method accepts any object. The idea here is that you send an object that is typed(see client example prjects) and it will be returned. This allows you to use typing on the client side without needing to create corresponding PHP VO classes. If you do this exclusively, you can disable the CustomClassConverter plugin, which will increase performance.