createIsEmpty

fun <T : Any> IViewableSet<T>.createIsEmpty(lifetime: Lifetime): IPropertyView<Boolean>
fun <T : Any> IViewableSet<T>.createIsEmpty(): IPropertyView<Boolean>
fun <K : Any, V : Any> IViewableMap<K, V>.createIsEmpty(lifetime: Lifetime): IPropertyView<Boolean>
fun <K : Any, V : Any> IViewableMap<K, V>.createIsEmpty(): IPropertyView<Boolean>