HeaderPageletLoadedEvent example

        $page = new HeaderPagelet(
            $navigation,
            $languages,
            $currencies,
            $contextLanguage,
            $context->getCurrency(),
            $this->getServiceMenu($context)
        );

        $this->eventDispatcher->dispatch(new HeaderPageletLoadedEvent($page, $context, $request));

        return $page;
    }

    private function getServiceMenu(SalesChannelContext $context): CategoryCollection
    {
        $serviceId = $context->getSalesChannel()->getServiceCategoryId();

        if ($serviceId === null) {
            return new CategoryCollection();
        }