flush static method
Immediately uploads queued data to the Appier server
Appier.flush()
By default, queued data is flushed to the Appier servers every 15 seconds (the default for flushInterval). You only need to call this method manually if you want to force a flush at a particular moment.
Implementation
static Future<void> flush() async {
await AppierFlutterPlatform.instance.flush();
}