// @dart = 2.9
import 'dart:async';

Future<String> asyncString() async {}
Future<String> asyncString2() async {}
Iterable<String> syncStarString() sync* {}
Iterable<String> syncStarString2() sync* {}
Stream<String> asyncStarString() async* {}
Stream<String> asyncStarString2() async* {}
List<String> stringList = ["bar"];
main() async {}