Elementor\Admin::enqueue_styles PHP Method

    public function enqueue_styles()
    {
        $suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
        $direction_suffix = is_rtl() ? '-rtl' : '';
        wp_register_style('elementor-icons', ELEMENTOR_ASSETS_URL . 'lib/eicons/css/elementor-icons' . $suffix . '.css', [], Plugin::instance()->get_version());
        wp_register_style('elementor-admin-app', ELEMENTOR_ASSETS_URL . 'css/admin' . $direction_suffix . $suffix . '.css', ['elementor-icons'], Plugin::instance()->get_version());
        wp_enqueue_style('elementor-admin-app');
        // It's for upgrade notice
        // TODO: enqueue this just if needed
        add_thickbox();
    }