--- /dev/null
+<?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\HttpFoundation\File\MimeType;
+
+/**
+ * Guesses the file extension corresponding to a given mime type.
+ */
+interface ExtensionGuesserInterface
+{
+ /**
+ * Makes a best guess for a file extension, given a mime type.
+ *
+ * @param string $mimeType The mime type
+ *
+ * @return string The guessed extension or NULL, if none could be guessed
+ */
+ public function guess($mimeType);
+}