/**
  * Return child nodes of specified node for usage in a TreeLoader
  *
  * @param Node $node The node to find child nodes for
  * @param string $nodeTypeFilter A node type filter
  * @param integer $depth levels of childNodes (0 = unlimited)
  * @param Node $untilNode expand the child nodes until $untilNode is reached, independent of $depth
  * @return void
  */
 public function getChildNodesForTreeAction(Node $node, $nodeTypeFilter, $depth, Node $untilNode)
 {
     $this->view->assignChildNodes($node, $nodeTypeFilter, NodeView::STYLE_TREE, $depth, $untilNode);
 }