A modern programming language that makes developers happier.

kotlinlang

I'm confused by your question a bit. Let me dissect it. `Task.Delay(timeUnit)`  returns a future that is complete after `timeUnit` elapses. This corresponds in Java (and in Kotlin) to this:
```
val executor = Executors.newScheduledThreadPool(1) // create it once for your app
val f = executor.schedule({}, delay, timeUnit) // that is your future
```
Now if you need to _wait_, then you take take some library that provides `await` suspending function on futures and do `await(f)`or `f.await()` -- whethever code style you like more (we are moving to the later)