pub fn show_tree_view(
InMut: InMut<'_, Ui>,
vehicle_sets: Query<'_, '_, (Entity, &Name, &Children), With<VehicleSet>>,
displayed_lines: Query<'_, '_, (Entity, &Name), With<DisplayedLine>>,
vehicles: Query<'_, '_, (Entity, &Name), With<Vehicle>>,
msg_open_tab: MessageWriter<'_, UiCommand>,
)