Injecting directly the AreaList and identifying if translation loading is needed

Model/Cron.php

@@ -26,7 +26,9 @@ namespace Adyen\Payment\Model;
 use Magento\Framework\Webapi\Exception;
 use Magento\Sales\Model\Order\Email\Sender\OrderSender;
 use Magento\Framework\App\Area;
-use Magento\Framework\ObjectManagerInterface;
+use Magento\Framework\App\AreaList;
+use Magento\Framework\Phrase\Renderer\Placeholder;
+use Magento\Framework\Phrase;
 
 class Cron
 {
@@ -165,9 +167,9 @@ class Cron
     protected $_adyenOrderPaymentCollectionFactory;
 
     /**
-     * @var ObjectManagerInterface
+     * @var AreaList
      */
-    protected $_objectManager;
+    protected $_areaList;
 
     /**
      * Cron constructor.
@@ -184,7 +186,7 @@ class Cron
      * @param Api\PaymentRequest $paymentRequest
      * @param Order\PaymentFactory $adyenOrderPaymentFactory
      * @param Resource\Order\Payment\CollectionFactory $adyenOrderPaymentCollectionFactory
-     * @param ObjectManagerInterface $objectManager
+     * @param AreaList $areaList
      */
     public function __construct(
         \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
@@ -199,7 +201,7 @@ class Cron
         \Adyen\Payment\Model\Api\PaymentRequest $paymentRequest,
         \Adyen\Payment\Model\Order\PaymentFactory $adyenOrderPaymentFactory,
         \Adyen\Payment\Model\Resource\Order\Payment\CollectionFactory $adyenOrderPaymentCollectionFactory,
-        ObjectManagerInterface $objectManager
+        AreaList $areaList
     ) {
         $this->_scopeConfig = $scopeConfig;
         $this->_adyenLogger = $adyenLogger;
@@ -213,7 +215,7 @@ class Cron
         $this->_adyenPaymentRequest = $paymentRequest;
         $this->_adyenOrderPaymentFactory = $adyenOrderPaymentFactory;
         $this->_adyenOrderPaymentCollectionFactory = $adyenOrderPaymentCollectionFactory;
-        $this->_objectManager = $objectManager;
+        $this->_areaList = $areaList;
     }
 
     /**
@@ -223,9 +225,9 @@ class Cron
     public function processNotification()
     {
         // needed for Magento < 2.2.0 https://github.com/magento/magento2/pull/8413
-        $areaList = $this->_objectManager->get(\Magento\Framework\App\AreaList::class);
-        if($areaList) {
-            $areaList->getArea(Area::AREA_CRONTAB)->load(Area::PART_TRANSLATE);
+        $renderer = Phrase::getRenderer();
+        if($renderer instanceof Placeholder) {
+            $this->_areaList->getArea(Area::AREA_CRONTAB)->load(Area::PART_TRANSLATE);
         }
 
         $this->_order = null;