public void setDisplayname(@NonNull final String newName) {
        string1 = newName;
        removeAll(type, key);
        add(type, key, long1, long2, long3, long4, newName, string2, string3, string4);
    }
to be called by Tracks only, not intended for direct usage
main/src/main/java/cgeo/geocaching/storage/extension/Trackfiles.java