Pimcore\Model\Element\Tag::correctPath PHP Method

    public function correctPath()
    {
        //set id path to correct value
        $parentIds = [];
        $parent = $this->getParent();
        while ($parent) {
            $parentIds[] = $parent->getId();
            $parent = $parent->getParent();
        }
        $parentIds = array_reverse($parentIds);
        if ($parentIds) {
            $this->idPath = "/" . implode("/", $parentIds) . "/";
        } else {
            $this->idPath = "/";
        }
    }