public List<AbstractHistoryItem> updateHistory() {
List<AbstractHistoryItem> newItems = new ArrayList<AbstractHistoryItem>();
try {
lock.acquire();
OperationId currentOpId = null;
if (projectSpace.getLocalChangePackage(false) != null) {
for (AbstractOperation op : projectSpace.getLocalChangePackage(
false).getOperations()) {
currentOpId = op.getOperationId();