code: public function generate(OrderItem $orderItem, Order $order)
      {
          $itemParams = $this->parentOrderItemRequestGenerator->generate($orderItem, $order);
  
          $customerGroupIdentity = $this->identityService->findOneBy([
              'objectIdentifier' => $order->getCustomer()->getCustomerGroupIdentifier(),
              'adapterName' => ShopwareAdapter::NAME,
              'objectType' => CustomerGroup::TYPE,
          ]);
  
          if (null === $customerGroupIdentity) {
              throw new RuntimeException('could not find customer group identity of bundle');
          }
  
          $bundle = $this->getBundle($orderItem->getNumber(), $customerGroupIdentity->getAdapterIdentifier());
  
          if (empty($bundle)) {
              return $itemParams;
          }
  
          $vatIdentity = $this->identityService->findOneBy([
              'objectIdentifier' => $orderItem->getVatRateIdentifier(),
              'adapterName' => ShopwareAdapter::NAME,
              'objectType' => VatRate::TYPE,
          ]);
  
          if (null === $vatIdentity) {
              throw new RuntimeException('could not find vat identity of bundle');
          }
  
          /**
           * @var Repository $taxRepository
           */
          $taxRepository = $this->entityManager->getRepository(Tax::class);
  
          /**
           * @var null|Tax $taxModel
           */
          $taxModel = $taxRepository->find($vatIdentity->getAdapterIdentifier());
  
          if (null === $taxModel) {
              throw new RuntimeException('could not find shopware vat model of bundle');
          }
  
          $itemParams['orderItemName'] = $bundle['name'];
  
          $itemParams['amounts'][0]['priceOriginalGross'] = $bundle['price'] * (1 + ($taxModel->getTax() / 100));
  
          return $itemParams;
      }
docs: @param OrderItem $orderItem
  @param Order     $order
  
  @return array