PHPHtmlParser\Dom\InnerNode::setParent PHP Method

    public function setParent(InnerNode $parent)
    {
        // check integrity
        if ($this->isDescendant($parent->id())) {
            throw new CircularException('Can not add descendant "' . $parent->id() . '" as my parent.');
        }
        return parent::setParent($parent);
    }