140             $node = $this->createNamespaceNode($id, $subdir);
143             if ($depth !== 0 && $this->applyRecursionDecision($node, $this->maxdepth - $depth)) {
144                 $this->createHierarchy($node, $dir . '/' . $subdir, $depth - 1);
148             $this->addNodeToHierarchy($parent, $node);
165             $node = new WikiStartpage($id, $title, $ns);
167             $node = new WikiNamespace($id, $title);
169         return $node;
210      * @param AbstractNode $node Node to add
213     protected function addNodeToHierarchy(AbstractNode $parent, AbstractNode $node): void  argument
215         $node->setParent($parent); // set the parent even when not added, yet
216         $node = $this->applyNodeProcessor($node);
217         if ($node instanceof AbstractNode) {
218             $parent->addChild($node);
253     protected function applyRecursionDecision(AbstractNode $node, int $depth): bool  argument
256         if (!$this->hasNotFlag(self::FLAG_KEEP_HIDDEN) && isHiddenPage($node->getId())) {
259         return parent::applyRecursionDecision($node, $depth);
263     protected function applyNodeProcessor(AbstractNode $node): ?AbstractNode  argument
266         if (!$this->hasNotFlag(self::FLAG_KEEP_HIDDEN) && isHiddenPage($node->getId())) {
269         return parent::applyNodeProcessor($node);