Actualización

vendor/knplabs/knp-menu/src/Knp/Menu/Loader/NodeLoader.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Knp\Menu\Loader;
+
+use Knp\Menu\FactoryInterface;
+use Knp\Menu\NodeInterface;
+
+class NodeLoader implements LoaderInterface
+{
+    private $factory;
+
+    public function __construct(FactoryInterface $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    public function load($data)
+    {
+        if (!$data instanceof NodeInterface) {
+            throw new \InvalidArgumentException(\sprintf('Unsupported data. Expected Knp\Menu\NodeInterface but got %s', \is_object($data) ? \get_class($data) : \gettype($data)));
+        }
+
+        $item = $this->factory->createItem($data->getName(), $data->getOptions());
+
+        foreach ($data->getChildren() as $childNode) {
+            $item->addChild($this->load($childNode));
+        }
+
+        return $item;
+    }
+
+    public function supports($data)
+    {
+        return $data instanceof NodeInterface;
+    }
+}