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vendor/symfony/dependency-injection/Loader/Configurator/AliasConfigurator.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use Symfony\Component\DependencyInjection\Alias;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class AliasConfigurator extends AbstractServiceConfigurator
+{
+    const FACTORY = 'alias';
+
+    use Traits\PublicTrait;
+
+    public function __construct(ServicesConfigurator $parent, Alias $alias)
+    {
+        $this->parent = $parent;
+        $this->definition = $alias;
+    }
+}