My function has an argument

error: @Composable (() -> Unit)? = null

i.e. a rendering lambda of the error or a null. I want to animate that rendering, so I need to postpone "nulling" the error until the hide animation finishes. How can I remember the composable result?

Box(
    modifier = Modifier
        .alpha(errorAlpha.value)
) {
    if (error != null) {
        error()
    }
}