onChangeLaunch
fun <T> CSHasChange<T>.onChangeLaunch(dispatcher: CoroutineContext = Main, function: suspend (T) -> Unit): CSRegistration
fun <T> CSHasChange<T>.onChangeLaunch(key: String, dispatcher: CoroutineContext = Main, function: suspend (T) -> Unit): CSRegistration
fun <T> CSHasChange<T>.onChangeLaunch(parent: CSHasRegistrations, function: suspend (T) -> Unit): CSRegistration