show method
Show the flushbar. Kicks in FlushbarStatus.IS_APPEARING state followed by FlushbarStatus.SHOWING
Implementation
Future<T?> show(BuildContext context) async {
flushbarRoute = route.showFlushbar<T>(
context: context,
flushbar: this,
) as route.FlushbarRoute<T?>;
return await Navigator.of(context, rootNavigator: false)
.push(flushbarRoute as Route<T>);
}