return BooleanValue.FALSE;
return null;
  public static Value dir(Env env, Path path)  {    try {      if (! path.isDirectory()) {	env.warning(L.l("{0} is not a directory", path.getFullPath()));	return BooleanValue.FALSE;      }      DirectoryValue dir = new DirectoryValue(path);      env.addClose(dir);      return dir;    } catch (IOException e) {      throw new QuercusModuleException(e);    }  }