Request Factory and extra proxy attributes

Hi,
I'm trying RequestFactory and have one problem. I have this entity:

public class Album {

private String name;
private List<Photo> photos;
...
// getters/setters
...
}

public class Photo {

private String description;
private string src;
....
// getters/setters
...
}

and the Proxys:

@ProxyFor(value = Album.class)
public interface AlbumProxy extends EntityProxy {
String getName();
List<PhotoProxy> getPhotos();
....
}

@ProxyFor(value = Photo.class)
public interface PhotoProxy extends EntityProxy {
String getDescription();
String getSrc();
....
}

On the client side I need to display albums names with count of photos
in the album. I want to transfer all infos about photos with:

Request<AlbumProxy> req =
factory.context().getAlbum(albumId).with("photos");

and than call size() on the recived list of photos. I want to change
my entities and add there methods getPhotosCount()

In RPC I used DTO with extra attribute int photosCount; Is it possible
with RF adding to the proxy extra method getPhotosCount() and map it
on the server side to some service method or exists another solution
for this problem?

Thanks Pavel

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