CountryStateDataPageletLoadedHook example

#[Route(path: 'country/country-state-data', name: 'frontend.country.country.data', defaults: ['XmlHttpRequest' => true, '_httpCache' => true], methods: ['POST'])]     public function getCountryData(Request $request, SalesChannelContext $context): Response
    {
        $countryId = (string) $request->request->get('countryId');

        if (!$countryId) {
            throw RoutingException::missingRequestParameter('countryId');
        }

        $countryStateDataPagelet = $this->countryStateDataPageletLoader->load($countryId, $request, $context);

        $this->hook(new CountryStateDataPageletLoadedHook($countryStateDataPagelet, $context));

        return new JsonResponse([
            'states' => $countryStateDataPagelet->getStates(),
        ]);
    }
}