inform user that article data sheet can't rendered in Smarty engine

Application/Model/Documents/articleDataSheet.php

@@ -19,6 +19,10 @@ use Assert\Assert;
 use Assert\InvalidArgumentException;
 use D3\PdfDocuments\Application\Model\AbstractClasses\pdfdocumentsGeneric;
 use OxidEsales\Eshop\Application\Model\Article;
+use OxidEsales\EshopCommunity\Internal\Container\ContainerFactory;
+use OxidEsales\EshopCommunity\Internal\Framework\Templating\TemplateRendererBridge;
+use OxidEsales\EshopCommunity\Internal\Framework\Templating\TemplateRendererBridgeInterface;
+use OxidEsales\Twig\TwigEngine;
 
 /**
  * @codeCoverageIgnore
@@ -27,6 +31,22 @@ class articleDataSheet extends pdfdocumentsGeneric
 {
     protected ?Article $article = null;
 
+    public function genPdf( string $filename, int $language = 0, string $target = self::PDF_DESTINATION_STDOUT ): ?string
+    {
+        /** @var TemplateRendererBridge $bridge */
+        $bridge = ContainerFactory::getInstance()->getContainer()->get(TemplateRendererBridgeInterface::class);
+        Assert::that($bridge->getTemplateRenderer()->getTemplateEngine())
+              ->isInstanceOf(
+                  TwigEngine::class,
+                  <<<MSG
+                  The article data sheet is only provided by the Twig Engine. 
+                  Please contact the author for further assistance.
+                  MSG
+              );
+
+        return parent::genPdf( $filename, $language, $target );
+    }
+
     public function setArticle(Article $article): void
     {
         $this->article = $article;

Modules/Application/Controller/ArticleDetailsController_pdfdocuments.php

@@ -28,7 +28,7 @@ class ArticleDetailsController_pdfdocuments extends ArticleDetailsController_pdf
      */
     public function generateDataSheet(): void
     {
-        $document = oxNew(ArticleDataSheet::class);
+        $document = oxNew(articleDataSheet::class);
         $document->setArticle($this->getProduct());
         $document->downloadPdf();
     }