setLandingPage example

        $landingPage = $this->landingPageRoute->load($landingPageId, $request, $context)->getLandingPage();

        if ($landingPage->getCmsPage() === null) {
            throw new PageNotFoundException($landingPageId);
        }

        $page = $this->genericPageLoader->load($request, $context);
        $page = LandingPage::createFrom($page);

        $page->setLandingPage($landingPage);

        $metaInformation = new MetaInformation();
        $metaTitle = $landingPage->getMetaTitle() ?? $landingPage->getName();
        $metaInformation->setMetaTitle($metaTitle ?? '');
        $metaInformation->setMetaDescription($landingPage->getMetaDescription() ?? '');
        $metaInformation->setMetaKeywords($landingPage->getKeywords() ?? '');
        $page->setMetaInformation($metaInformation);

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