Pack::__construct

public function __construct($name, MainEngineController $controller, array $config = [])
{
	$this->keepField([
		'packFile', 'languageId', 'tmpFolderPath', 'archiveFilePath',
		'archiveFileName', 'seekPath', 'totalFileCount', 'downloadParams',
	]);

	parent::__construct($name, $controller, $config);

	self::$documentRoot = rtrim(TranslateIOPath::tidy(MainApplication::getDocumentRoot()), '/');
}