changed = true;
                current++;
            }
        }
        return changed;
    }

    @Override
    protected IndexedElementSource<T> getStore() {
        return (IndexedElementSource<T>) super.getStore();
    }

    @Override
    public T get(int index) {
        return getStore().get(index);
    }

    @Override
    public T set(int index, T element) {