Faker\Provider\HtmlLorem::addRandomSubTree PHP Method

    private function addRandomSubTree(\DOMElement $root, $maxDepth, $maxWidth)
    {
        $maxDepth--;
        if ($maxDepth <= 0) {
            return $root;
        }
        $siblings = mt_rand(1, $maxWidth);
        for ($i = 0; $i < $siblings; $i++) {
            if ($maxDepth == 1) {
                $this->addRandomLeaf($root);
            } else {
                $sibling = $root->ownerDocument->createElement("div");
                $root->appendChild($sibling);
                $this->addRandomAttribute($sibling);
                $this->addRandomSubTree($sibling, mt_rand(0, $maxDepth), $maxWidth);
            }
        }
        return $root;
    }