private void setupWorkItems(final ListBox workItemsListBox) {
workItemsListBox.clear();
workItemsListBox.addItem(Constants.INSTANCE.NoWorkItemsAvailable());
workItemsListBox.setEnabled(false);
WorkItemServiceAsync workItemService= GWT.create(WorkItemService.class);
workItemService.loadWorkItemDefinitions( packageUUID,
new GenericCallback<Set<PortableWorkDefinition>>() {
public void onSuccess(Set<PortableWorkDefinition> result) {
//Add list of Work Item Definitions to list box