Update Composer, update everything

vendor/symfony/dependency-injection/Parameter.php

@@ -0,0 +1,38 @@
+<?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 $id;
+
+    /**
+     * @param string $id The parameter key
+     */
+    public function __construct($id)
+    {
+        $this->id = $id;
+    }
+
+    /**
+     * @return string The parameter key
+     */
+    public function __toString()
+    {
+        return (string) $this->id;
+    }
+}