public static IRepositoryFacard frontEnd(
     String host, int port, String userName, String password) {
   return new RepositoryFrontEnd(
       IHttpClient.Utils.builder(host, port).withCredentials(userName, password));
 }
 public static IRepositoryFacard defaultFacard() {
   return new RepositoryFrontEnd(IHttpClient.Utils.defaultClient());
 }