class PMap {

    public String get(String key, String _default) {
        String str = get(key);
        if (Helper.isEmpty(str))
            return _default;

        return str;
    }

    public  PMap();
    public  PMap(int capacity);
    public  PMap(Map<String, String> map);
    public  PMap(PMap map);
    public  PMap(String propertiesString);

}