start
fun <T> CoroutineScope.startChildAsync(lifetime: Lifetime, context: CoroutineContext = EmptyCoroutineContext, start: CoroutineStart = CoroutineStart.DEFAULT, block: suspend CoroutineScope.() -> T): Deferred<T>
fun <T> CoroutineScope.startChildAsync(lifetime: Lifetime, scheduler: IScheduler, start: CoroutineStart = CoroutineStart.DEFAULT, block: suspend CoroutineScope.() -> T): Deferred<T>
Deprecated
Use async without lifetime or lifetimedCoroutineScope