WPLessPlugin::getStyles PHP Метод

    public function getStyles()
    {
        global $wp_styles;
        //because if someone never registers through `wp_(enqueue|register)_stylesheet`,
        //$wp_styles is never initialized, and thus, equals NULL
        return null === $wp_styles || !$wp_styles instanceof WP_Styles ? new WP_Styles() : $wp_styles;
    }