import com.sun.xml.internal.ws.config.metro.util.ParserUtil; //导入依赖的package包/类
public TubelineFeature parse(XMLEventReader reader) throws WebServiceException {
    try {
        final StartElement element = reader.nextEvent().asStartElement();
        boolean attributeEnabled = true;
        final Iterator iterator = element.getAttributes();
        while (iterator.hasNext()) {
            final Attribute nextAttribute = (Attribute) iterator.next();
            final QName attributeName = nextAttribute.getName();
            if (ENABLED_ATTRIBUTE_NAME.equals(attributeName)) {
                attributeEnabled = ParserUtil.parseBooleanValue(nextAttribute.getValue());
            } else if (NAME_ATTRIBUTE_NAME.equals(attributeName)) {
                // TODO use name attribute
            } else {
                // TODO logging message
                throw LOGGER.logSevereException(new WebServiceException("Unexpected attribute"));
            }
        }
        return parseFactories(attributeEnabled, element, reader);
    } catch (XMLStreamException e) {
        throw LOGGER.logSevereException(new WebServiceException("Failed to unmarshal XML document", e));
    }
}