public void setHidden(final boolean hide) {
        long1 = hide ? 1 : 0;
        removeAll(type, key);
        add(type, key, long1, long2, long3, long4, string1, string2, string3, string4);
    }
to be called by Tracks only, not intended for direct usage
main/src/main/java/cgeo/geocaching/storage/extension/Trackfiles.java