public function unLink(HTTPRequest $request)
    {
        $ids = $this->getRecordIDList();
        $response = new HTTPBulkToolsResponse(true, $this->gridField);

        try {
            //@todo fix this. seems no ids are returned!
            $response->addSuccessRecords($this->getRecords());
            $this->gridField->list->removeMany($ids);
            $response->setMessage('UnLinked records.');
        } catch (Exception $ex) {
            $response->setStatusCode(500);
            $response->setMessage($ex->getMessage());
        }

        return $response;
    }