data class User(var age: Int)

fun userFactory(age: Int) = User(age)

val worker = Worker.start()

fun doUserWork(age: Int) {
    val future = worker.execute(TransferMode.SAFE, { userFactory(age) }) { input ->
        input.age = 24
        println(input)
    }
    future.consume { }
}

class DetachTest{
    @Test
    fun userStuff(){
        doUserWork(43)
    }
}