/**
  * {@inheritDoc}
  */
 public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
 {
     if ($node instanceof AbstractPropertyFunctionNode) {
         $config = $this->getPropertyConfigForNode($node);
         if ($config !== null) {
             $this->propertyMapper->addProperty($config);
         }
     }
     return $node;
 }