public function __construct() {
		add_filter( 'dozent_course_lead_meta_items', [ $this, 'add_wishlist_meta_item' ], 10, 2 );

		add_filter( 'wp_ajax_dozent_wishlist', [ $this, 'dozent_wishlist' ] );
		add_filter( 'wp_ajax_nopriv_dozent_wishlist', [ $this, 'dozent_wishlist' ] );
	}