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() {}