public function loadHTMLs($htmls)
    {
        $this->children = array();
        foreach ($htmls as $key => $html) {
            $className = get_class();
            $item = new $className($this->cmd, $this->folder);
            /* @var \Inline\LaravelPDF\PDF $item */
            $item->loadHTML($html);
            $this->children[] = $item;
        }
        return $this;
    }