WPDKUIComponents::init PHP Method

    public static function init()
    {
        static $instance = null;
        if (is_null($instance)) {
            $instance = new self();
            // @since 1.6.0 - You can now access to this singleton class by global
            $GLOBALS[__CLASS__] = $instance;
        }
        return $instance;
    }

 /**
  * Create an instance of WPDKUIModalDialogTour class
  *
  * @brief Construct
  *
  * @return WPDKUIModalDialogTour
  */
 public function __construct($id, $title)
 {
     // Remember, change the id to reopen this dialog tour
     parent::__construct($id, $title);
     // Permanent dismiss
     $this->permanent_dismiss = true;
     if (false === $this->is_dismissed() && 0 === did_action('wpxm_open_tour')) {
         // Enqueue page view
         WPDKUIComponents::init()->enqueue(WPDKUIComponents::PAGE);
     }
 }