Update Composer, update everything

vendor/symfony/http-kernel/CacheClearer/ChainCacheClearer.php

@@ -0,0 +1,56 @@
+<?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\HttpKernel\CacheClearer;
+
+/**
+ * ChainCacheClearer.
+ *
+ * @author Dustin Dobervich <ddobervich@gmail.com>
+ *
+ * @final since version 3.4
+ */
+class ChainCacheClearer implements CacheClearerInterface
+{
+    protected $clearers;
+
+    /**
+     * Constructs a new instance of ChainCacheClearer.
+     *
+     * @param array $clearers The initial clearers
+     */
+    public function __construct($clearers = array())
+    {
+        $this->clearers = $clearers;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear($cacheDir)
+    {
+        foreach ($this->clearers as $clearer) {
+            $clearer->clear($cacheDir);
+        }
+    }
+
+    /**
+     * Adds a cache clearer to the aggregate.
+     *
+     * @deprecated since version 3.4, to be removed in 4.0, inject the list of clearers as a constructor argument instead.
+     */
+    public function add(CacheClearerInterface $clearer)
+    {
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
+
+        $this->clearers[] = $clearer;
+    }
+}