@Override
    public NodeVisitor child(String ns, String name) {
        NodeImpl first = new NodeImpl(ns, name);
        this.firsts.add(first);
        return first;
    }
a class to write android axml

@author <a href="mailto:pxb1988@gmail.com">Panxiaobo</a>
android/third_party/apkbuilder/src/main/java/pxb/android/axml/AxmlWriter.java