Preferences prefs = config.node(configurableName);
String type = prefs.get("type", null);
GraphUpdater updater = null;
if (type != null) {
if (type.equals("bike-rental")) {
updater = new BikeRentalUpdater();
}
else if (type.equals("bike-park")) {
updater = new BikeParkUpdater();
}
else if (type.equals("stop-time-updater")) {