CustomerGroupRegistrationPageLoadedEvent example

$metaDescription = $page->getGroup()->getTranslation('registrationSeoMetaDescription');
            if ($metaDescription) {
                $page->getMetaInformation()->setMetaDescription($metaDescription);
            }

            $title = $page->getGroup()->getTranslation('registrationTitle');
            if ($title) {
                $page->getMetaInformation()->setMetaTitle($title);
            }
        }

        $this->eventDispatcher->dispatch(new CustomerGroupRegistrationPageLoadedEvent($page, $salesChannelContext, $request));

        return $page;
    }

    public function getDecorated(): AbstractCustomerGroupRegistrationPageLoader
    {
        throw new DecorationPatternException(self::class);
    }
}