Actualización

vendor/gedmo/doctrine-extensions/lib/Gedmo/Tree/Traits/NestedSet.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Gedmo\Tree\Traits;
+
+/**
+ * NestedSet Trait, usable with PHP >= 5.4
+ *
+ * @author Renaat De Muynck <renaat.demuynck@gmail.com>
+ * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
+ */
+trait NestedSet
+{
+
+    /**
+     * @var integer
+     */
+    private $root;
+
+    /**
+     * @var integer
+     */
+    private $level;
+
+    /**
+     * @var integer
+     */
+    private $left;
+
+    /**
+     * @var integer
+     */
+    private $right;
+
+}