refactor: inject AgeConstraintParserRegistry into TravelParser

src/BusProNet/XmlLoader/AbstractLoader.php

@@ -3,18 +3,27 @@
 namespace App\BusProNet\XmlLoader;
 
 use App\BusProNet\Traits\TypeConversionTrait;
-use App\BusProNet\Traits\XmlParserTrait;
 use League\Flysystem\FilesystemOperator;
+use Symfony\Component\DomCrawler\Crawler;
 use Symfony\Contracts\Cache\CacheInterface;
 
 abstract class AbstractLoader
 {
     use TypeConversionTrait;
-    use XmlParserTrait;
 
     public function __construct(
         protected readonly CacheInterface $cache,
         protected readonly FilesystemOperator $xmlExport,
     ) {
     }
+
+    protected function getStringOrNullValue(Crawler $node): ?string
+    {
+        return 0 < $node->count() ? $node->text() : null;
+    }
+
+    protected function getIntOrNullValue(Crawler $node): ?int
+    {
+        return 0 < $node->count() ? (int) $node->text() : null;
+    }
 }