Bottom bar in Jetpack Compose using the onebone Collapsing toolbar

Question

I'm trying to use the onebone CollapsingToolbar, but also need a bottomBar as used in a Scaffold (see here for example).

It seems to be possible as stated here, but haven't found any examples or docs on how to go about this. Would anyone know how to do this?

I'm able to do it with the normal Scaffold, but haven't found a way to do it with onebone.

    Scaffold(
        topBar = {
            TopNavBar(
                title = header.title,
                navigationIcon = { ToolbarIcon() },
            )
        },
        bottomBar = {
            BottomBar(
                data,
                listener,
            )
        },
        content = {
            contentUi()
        }
    )