public OrderingConfig getOrderingConfig() {
   if (orderingConfig == null) {
     // Try to read a stored config
     String encoded = store.get(ORDERING_CONFIG, (String) null);
     if (encoded != null) {
       orderingConfig = OrderingConfig.fromSaveString(encoded);
     } else {
       orderingConfig = OrderingConfig.DEFAULT;
     }
   }
   return orderingConfig;
 }