/**
* @param Node $node
* @param NodeVisitor $visitor
*
* @return bool
*/
private function visitNode(Node $node, NodeVisitor $visitor)
{
$visitor->enterNode($node);
foreach ($node->getChildren() as $key => $child) {
if (!$this->visitNode($child, $visitor)) {
$node->removeChild($key);
}
}
return $visitor->leaveNode($node);
}
