73             $parent = $this->createNamespaceNode($this->namespace, noNS($this->namespace));
74             $parent->setParent($this->top);
81             $parent = $this->top;
85         if ($parent instanceof Top || $this->applyRecursionDecision($parent, 0)) {
87             $this->createHierarchy($parent, $dir, $this->maxdepth);
91         if (!$parent instanceof Top) {
92             $this->addNodeToHierarchy($this->top, $parent);
99      * @param AbstractNode $parent results are added as children to this element
104     protected function createHierarchy(AbstractNode $parent, string $dir, int $depth)  argument
108             $this->processNamespaces($parent, $dir, $depth);
113             $this->processPages($parent, $dir);
120      * @param AbstractNode $parent Parent node to add children to
125     protected function processNamespaces(AbstractNode $parent, string $dir, int $depth)  argument
148             $this->addNodeToHierarchy($parent, $node);
175      * @param AbstractNode $parent Parent node to add children to
179     protected function processPages(AbstractNode $parent, string $dir)  argument
202             $this->addNodeToHierarchy($parent, $page);
209      * @param AbstractNode $parent Parent node
213     protected function addNodeToHierarchy(AbstractNode $parent, AbstractNode $node): void  argument
215         $node->setParent($parent); // set the parent even when not added, yet
218             $parent->addChild($node);
259         return parent::applyRecursionDecision($node, $depth);
269         return parent::applyNodeProcessor($node);