* or <code>null</code> if no pages where contributed.
*/
public static IRenamePHPElementActionFactory getActionDelegatorFactory(
String id) {
final List elementsList = (List) instance.actionDelegators.get(id);
IRenamePHPElementActionFactory action = null;
if (elementsList != null) {
int topPriority = 0;
Iterator i = elementsList.iterator();
while (i.hasNext()) {
IConfigurationElement element = (IConfigurationElement) i