class User implements UserIF, Serializable {

  @Override
  public void clearLog() {
    synchronized (this) {
      if (log == null)
        log = new HistoryMap(50, false);
      log.clear();
    }
  }

  public  User();
  public  User(NavigatorConfigurationIF navConf);
  public  User(String userId, NavigatorConfigurationIF navConf);

}