if (selection instanceof IStructuredSelection) {
boolean editEnabled = true;
boolean removeEnabled = true;
IStructuredSelection sSelection = (IStructuredSelection) selection;
Object[] selectedItems = sSelection.toArray();
for (Object selectedItem : selectedItems) {
if (selectedItem instanceof CloudServerURL) {
CloudServerURL cloudUrl = (CloudServerURL) selectedItem;
if (!cloudUrl.getUserDefined()) {
String url = cloudUrl.getUrl();