asStateFlowNotNull
fun <T> StorageSetting<T>.asStateFlowNotNull(scope: CoroutineScope, started: SharingStarted = SharingStarted.WhileSubscribed(5_000)): StateFlow<T>
fun <T, T2> StorageSetting<T>.asStateFlowNotNull(scope: CoroutineScope, mapper: (T) -> T2, started: SharingStarted = SharingStarted.WhileSubscribed(5_000)): StateFlow<T2>