class VulasConfiguration {

  public Object getProperty(@NotNull String _key, Object _default) {
    Object obj = cfg.getProperty(_key);
    if (obj == null) {
      obj = _default;
    } else if (obj instanceof String) {
      String other_key = (String) obj;
      if (this.cfg.containsKey(other_key)) {
        obj = this.getProperty(other_key, _default);
      }
    }
    return obj;
  }

  public  VulasConfiguration();

}