public function modifyCacheKey($cacheKey, $override = false)
    {
        if ($override) {
            $this->_sCacheKey = $cacheKey . "|i18n";
        } else {
            $this->_sCacheKey .= $cacheKey;
        }

        if (!$cacheKey) {
            $this->_sCacheKey = null;
        }
    }