diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -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\HttpKernel\CacheWarmer;
+
+/**
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface CacheWarmerInterface
+{
+    /**
+     * Warms up the cache.
+     *
+     * @param string $cacheDir The cache directory
+     */
+    function warmUp($cacheDir);
+
+    /**
+     * Checks whether this warmer is optional or not.
+     *
+     * Optional warmers can be ignored on certain conditions.
+     *
+     * A warmer should return true if the cache can be
+     * generated incrementally and on-demand.
+     *
+     * @return Boolean true if the warmer is optional, false otherwise
+     */
+    function isOptional();
+}