/**
  * @param Order $order
  * @return bool
  */
 protected function isProcessingAllowed(Order $order)
 {
     $isProcessingAllowed = true;
     $customer = $this->findExistingEntity($order->getCustomer());
     $customerOriginId = $order->getCustomer()->getOriginId();
     if (!$customer && $customerOriginId) {
         $this->appendDataToContext(ContextCustomerReader::CONTEXT_POST_PROCESS_CUSTOMERS, $customerOriginId);
         $isProcessingAllowed = false;
     }
     // Do not try to load cart if bridge does not installed
     /** @var MagentoSoapTransport $transport */
     $channel = $this->databaseHelper->findOneByIdentity($order->getChannel());
     $transport = $channel->getTransport();
     if ($transport->getIsExtensionInstalled()) {
         $cart = $this->findExistingEntity($order->getCart());
         $cartOriginId = $order->getCart()->getOriginId();
         if (!$cart && $cartOriginId) {
             $this->appendDataToContext(ContextCartReader::CONTEXT_POST_PROCESS_CARTS, $cartOriginId);
             $isProcessingAllowed = false;
         }
     }
     if (!$customer && $order->getIsGuest() && $transport->getGuestCustomerSync()) {
         $this->appendDataToContext('postProcessGuestCustomers', $this->context->getValue('itemData'));
         $isProcessingAllowed = false;
     }
     return $isProcessingAllowed;
 }