/**
  * AJAX callback to download the settings in a JSON encoded text file.
  *
  * @access private
  * @since  8.3
  * @static
  */
 public static function downloadSettings()
 {
     check_ajax_referer('export_settings');
     if (!current_user_can('manage_options')) {
         wp_send_json(__('You do not have sufficient permissions to export the settings.', 'connections'));
     }
     cnSettingsAPI::download();
 }