@Override
public DocumentNodeStore createNodeStore(int clusterNodeId) {
MongoConnection connection;
try {
connection = new MongoConnection("mongodb://localhost:27017/oak");
<BUG>return new DocumentMK.Builder()

.setMongoDB(connection.getDB())

.getNodeStore();
} catch (Exception e) {</BUG>
return null;

@Override
public DocumentNodeStore createNodeStore() {
return new DocumentMK.Builder().getNodeStore();
