pushToAsync
inline fun <T : Scene> pushToAsync(vararg injects: Any, time: TimeSpan = 0.seconds, transition: Transition = defaultTransition): Deferred<T>
fun <T : Scene> pushToAsync( clazz: KClass<T>, vararg injects: Any, time: TimeSpan = 0.seconds, transition: Transition = defaultTransition): Deferred<T>
Async variant returning a Deferred for pushTo