diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/Form/FormExtensionInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/Form/FormExtensionInterface.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,61 @@
+<?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\Form;
+
+/**
+ * Interface for extensions which provide types, type extensions and a guesser.
+ */
+interface FormExtensionInterface
+{
+    /**
+     * Returns a type by name.
+     *
+     * @param string $name The name of the type
+     *
+     * @return FormTypeInterface The type
+     */
+    function getType($name);
+
+    /**
+     * Returns whether the given type is supported.
+     *
+     * @param string $name The name of the type
+     *
+     * @return Boolean Whether the type is supported by this extension
+     */
+    function hasType($name);
+
+    /**
+     * Returns the extensions for the given type.
+     *
+     * @param string $name The name of the type
+     *
+     * @return array An array of extensions as FormTypeExtensionInterface instances
+     */
+    function getTypeExtensions($name);
+
+    /**
+     * Returns whether this extension provides type extensions for the given type.
+     *
+     * @param string $name The name of the type
+     *
+     * @return Boolean Whether the given type has extensions
+     */
+    function hasTypeExtensions($name);
+
+    /**
+     * Returns the type guesser provided by this extension.
+     *
+     * @return FormTypeGuesserInterface|null The type guesser
+     */
+    function getTypeGuesser();
+}