Elementor\Widget_Image_Carousel::get_link_url PHP Method

    private function get_link_url($attachment, $instance)
    {
        if ('none' === $instance['link_to']) {
            return false;
        }
        if ('custom' === $instance['link_to']) {
            if (empty($instance['link']['url'])) {
                return false;
            }
            return $instance['link'];
        }
        return ['url' => wp_get_attachment_url($attachment['id'])];
    }