Modifier Then Block

WithThenBlock

@Composable
fun WithThenBlock() {
    var isExpanded by remember {
        mutableStateOf(true)
    }

    Box(
        modifier = Modifier
            .height(50.dp)
            .then(
                if (isExpanded) {
                    isExpanded = false
                    Modifier.fillMaxWidth()
                } else {
                    Modifier.fillMaxWidth(0.5f)
                }
            )
            .background(Color.Blue)
    )
}