private function isInAnonymousFunction(XHPASTNode $node)
 {
     while ($node) {
         if ($node->getTypeName() == 'n_FUNCTION_DECLARATION' && $node->getChildByIndex(2)->getTypeName() == 'n_EMPTY') {
             return true;
         }
         $node = $node->getParentNode();
     }
 }