public function getOption($name)
    {
        if ($name == 'tag_cache') {
            return $this->getInnerCache();
        } else {
            if (in_array($name, $this->_options)) {
                return $this->_options[$name];
            }
            if ($name == 'lifetime') {
                return parent::getLifetime();
            }
            return null;
        }
    }