@Override
        public int describeContents() {
            return 0;
        }
Important: this class will only work if you incorporate {@link #onActivityResult(int, int, Intent)}
into the {@link Activity#onActivityResult(int, int, Intent)} method of the using application!
TODO: once Activity ResultAPI is available -> refactor! Watch #9349
main/src/main/java/cgeo/geocaching/storage/ContentStorageActivityHelper.java