public function get_description() {
        $retstring = "The user with id '$this->userid' restored the course with id '$this->courseid'.";

        if (isset($this->other['originalcourseid'])) {
            $originalcourseid = $this->other['originalcourseid'];
            $retstring = "The user with id '$this->userid' restored old course with id " .
                "'$originalcourseid' to a new course with id '$this->courseid'.";
        }

        return $retstring;
    }