silverstripe / silverstripe-asset-admin

            return new HTTPResponse(null, 400);

        }

        if (!isset($vars['ids']) || !$vars['ids']) {

            return (new HTTPResponse(json_encode(['status' => 'error']), 400))

                ->addHeader('Content-Type', 'application/json');

        }

        $fileIds = $vars['ids'];

        $files = $this->getList()->filter("ID", $fileIds)->toArray();

     * @return HTTPResponse

     */

    protected function saveOrPublish($data, $form, $doPublish = false) {

        if (!isset($data['ID']) || !is_numeric($data['ID'])) {

            return (new HTTPResponse(json_encode(['status' => 'error']), 400))

                ->addHeader('Content-Type', 'application/json');

        }

        $id = (int) $data['ID'];

        /** @var File $record */

    }

    public function unpublish($data, $form) {

        if (!isset($data['ID']) || !is_numeric($data['ID'])) {

            return (new HTTPResponse(json_encode(['status' => 'error']), 400))

                ->addHeader('Content-Type', 'application/json');

        }

        $id = (int) $data['ID'];

        /** @var File $record */