public function read(array $opts) {
        return [array_merge(parent::read($opts)[0], [
            'recipe' => 'course_completed',
            'user_id' => $opts['relateduser']->id,
            'user_url' => $opts['relateduser']->url,
            'user_name' => $opts['relateduser']->fullname,
        ])];
    }