if ($this->batch) {
                $this->batch->addTask('Export_ExportCommand', $data['type'], 'addFooter', $this->tempFilename . $this->fileExtension, $modelId, $data);
                $this->batch->setSessionVariable('files', $this->files);
            } else {
                $this->addFooter($this->tempFilename . $this->fileExtension, $modelId, $data);