private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            StopThread();

            if (_api != null)
            {
                _api.Dispose();
                _api = null;
            }

            if (_sim != null)
            {
                _sim.Dispose();
                _sim = null;
            }
        }
 private void StartServer_Click(object sender, RoutedEventArgs e)
 {
     _api = new RestApiServer(_sim);
 }