refactor: inject AgeConstraintParserRegistry into TravelParser

src/BusProNet/Traits/XmlParserTrait.php

@@ -1,18 +0,0 @@
-<?php
-
-namespace App\BusProNet\Traits;
-
-use Symfony\Component\DomCrawler\Crawler;
-
-trait XmlParserTrait
-{
-    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;
-    }
-}