StringItem updateNs(StringItem item) {
        if (item == null) {
            return null;
        }
        String ns = item.data;
        if (!this.nses.containsKey(ns)) {
            this.nses.put(ns, null);
        }
        return update(item);
    }
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