Actualización

vendor/symfony/validator/Constraints/Existence.php

@@ -0,0 +1,30 @@
+<?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\Validator\Constraints;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+abstract class Existence extends Composite
+{
+    public $constraints = array();
+
+    public function getDefaultOption()
+    {
+        return 'constraints';
+    }
+
+    protected function getCompositeOption()
+    {
+        return 'constraints';
+    }
+}