static synchronized @Nullable SystemTrayNotifications getWin10Instance() throws AWTException {
    if (ourWin10Instance == null && SystemTray.isSupported()) {
      ourWin10Instance = new SystemTrayNotifications(createImage(), TrayIcon.MessageType.INFO);
    }
    return ourWin10Instance;
  }
static synchronized @Nullable SystemTrayNotifications getWin10Instance()