* @throws XmlPullParserException XmlPullParserException if
     * any.
     * @return CoreExtensions
     */
    private CoreExtensions parseCoreExtensions(XmlPullParser parser, boolean strict)
            throws IOException, XmlPullParserException {
        String tagName = parser.getName();
        CoreExtensions coreExtensions = new CoreExtensions();
        for (int i = parser.getAttributeCount() - 1; i >= 0; i--) {

    protected abstract Options parseCliOptions(LocalContext context);

    /**
     * Important: This method must return list of {@link CoreExtensions} in precedence order.
     */
    protected List<CoreExtensions> readCoreExtensionsDescriptor(LocalContext context) {
        ArrayList<CoreExtensions> result = new ArrayList<>();
        Path file;
        List<CoreExtension> loaded;