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diff --git a/vendor/symfony/dependency-injection/Config/AutowireServiceResource.php b/vendor/symfony/dependency-injection/Config/AutowireServiceResource.php
new file mode 100644
index 000000000..36449d8d3
--- /dev/null
+++ b/vendor/symfony/dependency-injection/Config/AutowireServiceResource.php
@@ -0,0 +1,73 @@
+<?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\Config;
+
+use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
+use Symfony\Component\DependencyInjection\Compiler\AutowirePass;
+
+class AutowireServiceResource implements SelfCheckingResourceInterface, \Serializable
+{
+    private $class;
+    private $filePath;
+    private $autowiringMetadata = array();
+
+    public function __construct($class, $path, array $autowiringMetadata)
+    {
+        $this->class = $class;
+        $this->filePath = $path;
+        $this->autowiringMetadata = $autowiringMetadata;
+    }
+
+    public function isFresh($timestamp)
+    {
+        if (!file_exists($this->filePath)) {
+            return false;
+        }
+
+        // has the file *not* been modified? Definitely fresh
+        if (@filemtime($this->filePath) <= $timestamp) {
+            return true;
+        }
+
+        try {
+            $reflectionClass = new \ReflectionClass($this->class);
+        } catch (\ReflectionException $e) {
+            // the class does not exist anymore!
+            return false;
+        }
+
+        return (array) $this === (array) AutowirePass::createResourceForClass($reflectionClass);
+    }
+
+    public function __toString()
+    {
+        return 'service.autowire.'.$this->class;
+    }
+
+    public function serialize()
+    {
+        return serialize(array($this->class, $this->filePath, $this->autowiringMetadata));
+    }
+
+    public function unserialize($serialized)
+    {
+        list($this->class, $this->filePath, $this->autowiringMetadata) = unserialize($serialized);
+    }
+
+    /**
+     * @deprecated Implemented for compatibility with Symfony 2.8
+     */
+    public function getResource()
+    {
+        return $this->filePath;
+    }
+}