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

        // Should only be available to admins.
        if (!$this->auth->isGranted('GROUP_ROLE_ADMIN', $group)) {
            return;
        }

        // Create settings menu items.
        $settings = $this->factory->createItem('menu_item.settings', [
            'route' => 'bkstg_production_settings',
            'routeParameters' => ['production_slug' => $group->getSlug()],
            'extras' => [
                'icon' => 'wrench',
                'translation_domain' => BkstgCoreBundle::TRANSLATION_DOMAIN,
            ],
        ]);
        $menu->addChild($settings);

        $general = $this->factory->createItem('menu_item.general', [
            'route' => 'bkstg_production_settings',
            'routeParameters' => ['production_slug' => $group->getSlug()],
            'extras' => [
                'translation_domain' => BkstgCoreBundle::TRANSLATION_DOMAIN,
            ],
        ]);
        $settings->addChild($general);
    }