using xstream to serialize a class without its extended class

Question

I have two classes:

class ObjectCollection {
    Object[] collection;
}

and

class Object extends AnotherObject {

}

Now, on serializing these with XStream, it gets everything right, but it also adds data from AnotherObject to each Object. Is there a way to tell XStream to ignore elements from the extended class not wanted?

Answer 1

See this post. However, if the objects should be the same, why have 2 classes?