static public Gson getInstance() {
        if (instance == null) {
            instance = new GsonBuilder()
                    .registerTypeAdapter(DateTime.class, new ISO3339DateDeserializer())
                    .setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'")
                    .create();
        }
        return instance;
    }
static public Gson getInstance ( ) { if ( instance == null ) { instance = new GsonBuilder ( ) . registerTypeAdapter ( DateTime . class , new ISO3339DateDeserializer ( ) ) . setDateFormat ( "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'" ) . create ( ) ; } return instance ; }
@return Singleton instance of the Gson parser that handle Asana's date format (ISO 3339)