MainAppBar
fun MainAppBar(modifier: Modifier = Modifier, title: String, subtitle: String? = null, ourNode: Node?, showNodeChip: Boolean, canNavigateUp: Boolean, onNavigateUp: () -> Unit, actions: @Composable () -> Unit, onClickChip: (Node) -> Unit, brandingContent: @Composable () -> Unit = { EventAwareBranding() })(source)