public function getCatTreePath()
    {
        if ($this->_sCatTreePath === null) {
            $this->_sCatTreePath = false;
            // category path
            if ($categoryTree = $this->getCategoryTree()) {
                $this->_sCatTreePath = $categoryTree->getPath();
            }
        }

        return $this->_sCatTreePath;
    }