Hello. I am writinng an app in B4A, one of the functionality of which should be push notifications. I took example with push notifications from the tutorial and it works. But now I need to make a PHP-page from which I could send notifications to one/some/all users of my app. But it needs "client token id`s". In all videos on the youtube used Firebase with Android Studio. In this development environment Firebase already fully integrated and you easy can obtain tokens. But how could I get it in the B4A? Or maybe exists another way to realize push notifications from PHP-page?