public function featuredImage()
    {
        if (!has_post_thumbnail() || post_password_required() || is_attachment()) {
            $output = '';
        } else {
            if (is_singular()) {
                $output = get_the_post_thumbnail();
            } else {
                $output = get_the_post_thumbnail(null, 'post-thumbnail', ['alt' => get_the_title()]);
            }
        }

        return apply_filters('novusopress_view_featured_image_output', $output);
    }