public void addHandler(final PTInstruction addHandler, final UIService uiService) {
final String handlerType = addHandler.getString(HANDLER.KEY);
if (handlerType.equals(HANDLER.KEY_.SELECTION_HANDLER)) {
final StackLayoutPanel stackLayoutPanel = uiObject;
stackLayoutPanel.addSelectionHandler(new SelectionHandler<Integer>() {
@Override
public void onSelection(final SelectionEvent<Integer> event) {
final PTInstruction eventInstruction = new PTInstruction();
eventInstruction.setObjectID(addHandler.getObjectID());