public function col_info($expiredctx) {
        global $OUTPUT;

        $context = context_helper::instance_by_id($expiredctx->get('contextid'));

        $children = $context->get_child_contexts();
        if (empty($children)) {
            return get_string('none');
        } else {
            $childnames = [];
            foreach ($children as $child) {
                $childnames[] = $child->get_context_name(false, true);
            }
            $infoicon = new pix_icon('i/info', implode(', ', $childnames));
            $infoiconhtml = $OUTPUT->render($infoicon);
            $name = html_writer::span(get_string('nchildren', 'tool_dataprivacy', count($children)), 'mr-1');

            return  $name . $infoiconhtml;
        }
    }