Does the library support sending "alert" block as string?

[lexakozakov]

The library always creates "ServiceAlert" object

        $alert = new ServiceAlert(
            $message->getText(),
            $message->getOption('actionLocKey'),
            $message->getOption('locKey'),
            $message->getOption('locArgs'),
            $message->getOption('launchImage'),
            $message->getOption('title'),
            $message->getOption('titleLocKey'),
            $message->getOption('titleLocArgs')
        );
       ....

        $serviceMessage = new ServiceMessage();
        $serviceMessage->setAlert($alert);

https://github.com/Ph3nol/NotificationPusher/blob/master/src/Sly/NotificationPusher/Adapter/Apns.php#L172, meanwhile $serviceMessage->setAlert() accepts string type as well.

Does the library support sending "alert" block as string?

Thank you.