public function addOverviewItem(ProductionMenuCollectionEvent $event): void
    {
        $menu = $event->getMenu();
        $group = $event->getGroup();

        // Create overview menu item.
        $overview = $this->factory->createItem('menu_item.overview', [
            'route' => 'bkstg_production_overview',
            'routeParameters' => ['production_slug' => $group->getSlug()],
            'extras' => [
                'icon' => 'tachometer-alt',
                'translation_domain' => BkstgCoreBundle::TRANSLATION_DOMAIN,
            ],
        ]);
        $menu->addChild($overview);
    }