getDocumentTemplate example

throw new RuntimeException(sprintf("Shop '%s (id: %s)' has no customer group.", $shop->getName(), $shop->getId()));
        }

        $shop->getCurrency();
        $shop->getLocale();

        $mainShop = $shop->getMain() ?? $shop;
        if (!$mainShop->getTemplate()) {
            throw new RuntimeException(sprintf("Shop '%s (id: %s)' has no template.", $shop->getName(), $shop->getId()));
        }

        if (!$mainShop->getDocumentTemplate()) {
            throw new RuntimeException(sprintf("Shop '%s (id: %s)' has no document template.", $shop->getName(), $shop->getId()));
        }
    }

    private function refreshCart(Shop $shop): void
    {
        $this->get(ShopRegistrationServiceInterface::class)->registerShop($shop);

        $modules = $this->get('modules');

        if (empty($this->get('session')->get('sUserId'))) {