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kotlinlang

I have a `LazyColumn` displaying my UI elements, and sometimes the contents don't fill one entire screen. How would I detect if there is empty space and the size of that space between the last `item` and the bottom of the screen

something like
```val listState = rememberLazyListState()
LazyColumn(state = listState) {
    // ...
}
val startEndSpace by snapshotFlow {
    with(listState.layoutInfo) {
        visibleItemsInfo.firstOrNull()?.takeIf { it.index == 0 }?.let { it.offset - viewportStartOffset } to
            visibleItemsInfo.lastOrNull()?.takeIf { it.index == totalItemsCount - 1 }?.let {
                viewportEndOffset - (it.offset + it.size)
            }
    }
}.collectAsState(initial = null to null)```