library test;

import 'dart:async';

abstract class MyFuture implements Future<int> {}

void test(
  int x0,
  Future<int> x1,
  Future<Future<int>> x2,
  Future<FutureOr<int>> x3,
  Future<MyFuture> x4,
  FutureOr<int> x5,
  FutureOr<Future<int>> x6,
  FutureOr<FutureOr<int>> x7,
  FutureOr<MyFuture> x8,
  MyFuture x9,
) async {}

main() {}