code: public static MetricsConnection connection_unauthorized(LibertyServer server) {
          return new MetricsConnection(server, METRICS_ENDPOINT).secure(true)
                          .header("Authorization",
                                  "Basic " + Base64Coder
                                                  .base64Encode(UNAUTHORIZED_USER_USERNAME + ":" + UNAUTHORIZED_USER_PASSWORD));
      }
docs: Creates a connection for private (authorized) docs endpoint using HTTPS
  and an unauthorized user ID
  
  @param server - server to connect to
  @return