public function getRecommLists()
    {
        if ($this->_aUserRecommLists === null) {
            $this->_aUserRecommLists = false;
            if (($oUser = $this->getUser())) {
                // recommendation list
                $this->_aUserRecommLists = $oUser->getUserRecommLists();
            }
        }

        return $this->_aUserRecommLists;
    }