ItemlistPrep.kt

private val itemList = (0..20).map { i ->
        AppItem(
            id = i,
            text = "Item ${i+1}"
        )
    }

private val _itemsState = mutableStateListOf<AppItem>()
val itemsState: List<AppItem> = _itemsState

init {
   _itemsState.addAll(itemList)
}