* @param sw
*/
public void setUp(AssessmentInstance assessInstance, Element el_orig_item, Switches sw) {
this.assessInstance = assessInstance;
this.el_shuffled_item = shuffle(el_orig_item);
this.qtiItem = new Item(el_shuffled_item);
if (sw == null) { // no section switches dominate, take item switches
// retrieve item switches
Element el_control = (Element) el_orig_item.selectSingleNode("itemcontrol");
if (el_control != null) {