70             $parent = $this->createNamespaceNode($this->namespace, noNS($this->namespace));
71             $parent->setParent($this->top);
78             $parent = $this->top;
82         if ($parent instanceof Top || $this->applyRecursionDecision($parent, 0)) {
84             $this->createHierarchy($parent, $dir, $this->maxdepth);
88         if (!$parent instanceof Top) {
89             $this->addNodeToHierarchy($this->top, $parent);
96      * @param AbstractNode $parent results are added as children to this element
101     protected function createHierarchy(AbstractNode $parent, string $dir, int $depth)  argument
105             $this->processNamespaces($parent, $dir, $depth);
110             $this->processPages($parent, $dir);
117      * @param AbstractNode $parent Parent node to add children to
122     protected function processNamespaces(AbstractNode $parent, string $dir, int $depth)  argument
140             $this->addNodeToHierarchy($parent, $node);
167      * @param AbstractNode $parent Parent node to add children to
171     protected function processPages(AbstractNode $parent, string $dir)  argument
189             $this->addNodeToHierarchy($parent, $page);
196      * @param AbstractNode $parent Parent node
200     protected function addNodeToHierarchy(AbstractNode $parent, AbstractNode $node): void  argument
202         $node->setParent($parent); // set the parent even when not added, yet
205             $parent->addChild($node);
246         return parent::applyRecursionDecision($node, $depth);
256         return parent::applyNodeProcessor($node);