public function get_doc_url(\core_search\document $doc) {
        // Get correct URL to section that contains label, from course format.
        $cminfo = $this->get_cm($this->get_module_name(), strval($doc->get('itemid')), $doc->get('courseid'));
        $format = course_get_format($cminfo->get_course());
        $url = $format->get_view_url($cminfo->sectionnum);

        // Add the ID of the label to the section URL.
        $url->set_anchor('module-' . $cminfo->id);
        return $url;
    }