// Create a tester instance
    SpeedTestPort tester = SpeedTestPort();

    // And a variable to store the best servers
    List<Server> bestServersList = [];

    // Example function to set the best servers, could be called
    // in an initState()
    Future<void> setBestServers() async {
      final settings = await tester.getSettings();
      final servers = settings.servers;

      final _bestServersList = await tester.getBestServers(
        servers: servers,
      );

      setState(() {
        bestServersList = _bestServersList;
      });
    }

    //Test download speed in MB/s
    final downloadRate =
        await tester.testDownloadSpeed(servers: bestServersList);

    //Test upload speed in MB/s
    final uploadRate = await tester.testUploadSpeed(servers: bestServersList);