docs: static Endpoint produceLocalEndpoint(String serviceName) {
      Endpoint.Builder builder = Endpoint.newBuilder().serviceName(serviceName);
      try {
        Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
        if (nics == null) {
          return builder.build();
        }
        while (nics.hasMoreElements()) {
          NetworkInterface nic = nics.nextElement();
          Enumeration<InetAddress> addresses = nic.getInetAddresses();
          while (addresses.hasMoreElements()) {
            InetAddress address = addresses.nextElement();
            if (address.isSiteLocalAddress()) {
              builder.ip(address);
              break;
            }
          }
        }
      } catch (Exception e) {
        // don't crash the caller if there was a problem reading nics.
        if (logger.isLoggable(Level.FINE)) {
          logger.log(Level.FINE, "error reading nics", e);
        }
      }
      return builder.build();
    }