docs: protected void schedulePeriodicStats() {
          m_timer = new Timer();
          TimerTask statsPrinting = new TimerTask() {
              @Override
              public void run() { printStatistics(); }
          };
          m_timer.scheduleAtFixedRate(statsPrinting,
                  m_config.displayinterval * 1000,
                  m_config.displayinterval * 1000);
      }