code: private function handleOrder(Order $order)
      {
          $params = $this->orderRequestGenerator->generate($order);
          $result = $this->client->request('post', 'orders', $params);
  
          $this->identityService->insert(
              $order->getIdentifier(),
              Order::TYPE,
              (string) $result['id'],
              PlentymarketsAdapter::NAME
          );
  
          return true;
      }
docs: @param Order $order
  
  @return bool