@Composable
fun SwitchWithIconExample() {
    var checked by remember { mutableStateOf(true) }

    Switch(
        checked = checked,
        onCheckedChange = {
            checked = it
        },
        thumbContent = if (checked) {
            {
                Icon(
                    imageVector = Icons.Filled.Check,
                    contentDescription = null,
                    modifier = Modifier.size(SwitchDefaults.IconSize),
                )
            }
        } else {
            null
        }
    )
}
Switch.kt