Wicket: How to implement an IDataProvider/LoadableDetachableModel for indexed lists

class Customer {
    List<Adress> adresses;
}

class AdressDataProvider implements IDataProvider {

public Iterator iterator() {
    Customer c = (Customer)Component.this.getModel(); // somehow get the customer model
    return c.getAdresses().iterator();
}

public IModel model(Object o) {
    Adress a = (Adress) o;
    // Return an LDM which loads the adress by id.
    return new AdressLoadableDetachableModel(a.getId());
}

}