docs: private static String getPUBURIAsString() {
          String pubUri = JanusConfig.getSystemProperty(JanusConfig.PUB_URI);
          if (pubUri == null || pubUri.isEmpty()) {
              InetAddress a = NetworkUtil.getPrimaryAddress();
              if (a == null) {
                  a = NetworkUtil.getLoopbackAddress();
              }
              if (a != null) {
                  pubUri = NetworkUtil.toURI(a, -1).toString();
                  System.setProperty(JanusConfig.PUB_URI, pubUri);
              }
          }
          return pubUri;
      }