focusTarget

@Composable
fun FocusableSampleUsingLowerLevelFocusTarget() {
    var color by remember { mutableStateOf(Black) }
    Box(
        Modifier
            .border(2.dp, color)
            // The onFocusChanged should be added BEFORE the focusTarget that is being observed.
            .onFocusChanged { color = if (it.isFocused) Green else Black }
            .focusTarget()
    )
}