getUserOrder asynchronous

main.dart

// Asynchronous
Future<String> createOrderMessage () async {
  var order = await getUserOrder();
  return 'Your order is: $order';
}

// Asynchronous
Future<String> getUserOrder() {
  return Future.delayed(Duration(seconds: 4), () => 'Large Latte');
}

// Asynchronous
main() async {
  print("Fetching user order...");
  var orderMessage = await createOrderMessage();
  print(orderMessage);
}