protected function takeChildFromDOM($child)
    {
        if ($child->nodeType == XML_TEXT_NODE) {
            $this->_text = $child->nodeValue;
        } else {
            $extensionElement = new Zend_Gdata_App_Extension_Element();
            $extensionElement->transferFromDOM($child);
            $this->_extensionElements[] = $extensionElement;
        }
    }