What object in Flutter allows your method to become asynchronous?*1 pointAsyncWaitFuturePromise

The object in Flutter that allows your method to become asynchronous is Future.

Here's a step by step guide on how to use it:

1. First, you need to define a method that returns a Future. For example:

Future<String> fetchData() async {
  // Simulate a network request
  await Future.delayed(Duration(seconds: 2));
  return 'Hello, World!';
}

In this example, fetchData is an asynchronous method that delays for 2 seconds then returns 'Hello, World!'.

2. To call this method and wait for it to complete, you can use the await keyword:

void printData() async {
  String data = await fetchData();
  print(data);
}

In this example, printData is another asynchronous method that calls fetchData and waits for it to complete before printing the result.

3. Finally, you can call printData from your Flutter code:

void main() {
  printData();
}

In this example, main is the entry point of the Flutter app. It calls printData when the app starts.

Remember, any function marked as async returns a Future. You can use the await keyword to pause execution of the function until the Future completes.