code: public String stats() {
          ICURWLock.Stats stats = factoryLock.resetStats();
          if (stats != null) {
              return stats.toString();
          }
          return "no stats";
      }
docs: When the statistics for this service is already enabled,
  return the log and resets he statistics.
  When the statistics is not enabled, this method enable
  the statistics. Used for debugging purposes.