Issue #3146782 by Project Update Bot, Berdir: Automated Drupal 9 compatibility fixes

commerce_datatrans.info.yml

@@ -2,6 +2,6 @@ name: Commerce Datatrans
 type: module
 description: 'Provides payment gateway for Datatrans.'
 package: Commerce
-core: 8.x
+core_version_requirement: ^8.7.7 || ^9
 dependencies:
   - commerce:commerce_payment

src/Plugin/Commerce/PaymentGateway/Datatrans.php

@@ -241,7 +241,7 @@ class Datatrans extends OffsitePaymentGatewayBase {
     $post_data = $request->request->all();
 
     if (!$this->validateResponseData($post_data, $order)) {
-      drupal_set_message($this->t('There was a problem while processing your payment.'), 'warning');
+      $this->messenger()->addWarning($this->t('There was a problem while processing your payment.'));
       throw new PaymentGatewayException();
     }
 

src/Plugin/Commerce/PaymentMethodType/DatatransAlias.php

@@ -2,7 +2,7 @@
 
 namespace Drupal\commerce_datatrans\Plugin\Commerce\PaymentMethodType;
 
-use Drupal\commerce\BundleFieldDefinition;
+use Drupal\entity\BundleFieldDefinition;
 use Drupal\commerce_payment\Entity\PaymentMethodInterface;
 use Drupal\commerce_payment\Plugin\Commerce\PaymentMethodType\PaymentMethodTypeBase;