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vendor/symfony/dependency-injection/Parameter.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;
+
+/**
+ * Parameter represents a parameter reference.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Parameter
+{
+    private string $id;
+
+    public function __construct(string $id)
+    {
+        $this->id = $id;
+    }
+
+    public function __toString(): string
+    {
+        return $this->id;
+    }
+}