docs: synchronized void startBlinkTimer() {
          if(blinkTimer != null) {
              // Already on!
              return;
          }
          blinkTimer = new Timer("LanternaTerminalBlinkTimer", true);
          blinkTimer.schedule(new TimerTask() {
              @Override
              public void run() {
                  blinkOn = !blinkOn;
                  if(hasBlinkingText) {
                      repaint();
                  }
              }
          }, deviceConfiguration.getBlinkLengthInMilliSeconds(), deviceConfiguration.getBlinkLengthInMilliSeconds());
      }