public function parseXml($entryXml)
    {
        $this->_entry->parseXml($entryXml);
        $content = $this->_entry->getContent();
        if (is_null($content)) {
            $this->_queueDescription = null;
        } else {
            $this->_queueDescription = QueueDescription::create($content->getText());
        }
    }