is.setSystemId("include.xml");
        parser.parse(is, new DefaultHandler() {

            @Override
            public void startElement(final String uri, final String localName, final String qName, final Attributes attributes)
                    throws SAXException {
                if ("bar".equals(qName)) {
                    included = true;
                }
            }

    }

    public static SchemaFactory newW3cXmlSchemaFactory(final boolean external) {
        final SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
        if (!external) {
            disableExternalResources(schemaFactory);
        }
        return schemaFactory;
    }

    /**
     * RELAX NGのための{@link SchemaFactory}を生成します。
     *

    protected static final String ERROR = "error";

    protected static final String ERROR_DESCRIPTION = "error_description";

    protected static final String ERROR_URI = "error_uri";

    protected static final String ID_TOKEN = "id_token";

    protected static final String CODE = "code";

    protected long acquisitionTimeout = 30 * 1000L;

    /** The key of the message: {item} cannot convert as {propertyType}. */
    public static final String CONSTRAINTS_TypeAny_MESSAGE = "{constraints.TypeAny.message}";

    /** The key of the message: {item} has wrong URI. */
    public static final String CONSTRAINTS_UriType_MESSAGE = "{constraints.UriType.message}";

    /** The key of the message: {item} is invalid cron expression. */

    }

    @Override
    public void endDocument() throws SAXException {
        globalParams.clear();
        tagQueue.clear();
    }

    @Override
    public void startElement(final String uri, final String localName, final String qName, final Attributes attributes)
            throws SAXException {
        if (logger.isDebugEnabled()) {
            logger.debug("Start Element: {}", qName);
        }