code: public function handle(CommandInterface $command)
      {
          /**
           * @var Payment $payment
           */
          $payment = $command->getPayload();
  
          /**
           * @var AmazonPayPaymentData $data
           */
          $data = $payment->getPaymentData();
  
          if (!($data instanceof AmazonPayPaymentData)) {
              return $this->parentCommandHandler->handle($command);
          }
  
          $orderIdentity = $this->identityService->findOneBy([
              'objectIdentifier' => $payment->getOrderIdentifer(),
              'objectType' => Order::TYPE,
              'adapterName' => PlentymarketsAdapter::NAME,
          ]);
  
          if (null === $orderIdentity) {
              throw new NotFoundException('could not find order for amazon payment handling - ' . $payment->getOrderIdentifer());
          }
  
          $amazonPayDataParams = [
              'key' => $data->getKey(),
              'order_reference_id' => $data->getTransactionId(),
              'order_id' => $orderIdentity->getAdapterIdentifier(),
          ];
  
          $this->client->request('POST', 'amazon-shopware-connect', $amazonPayDataParams, null, null, ['foreign' => true]);
  
          return true;
      }
docs: {@inheritdoc}
  
  @var TransferObjectCommand $command