public function getThread($cid, $fid, $id, $slug)
    {
        if ($this->_thread === null) {
            $this->_thread = (new ThreadVerifier([
                    'categoryId' => $cid,
                    'forumId' => $fid,
                    'threadId' => $id,
                    'threadSlug' => $slug
                ]))->verify();
        }
        return $this->_thread;
    }