if (entry == null) { return false; }
    private static boolean bumpEntry(SVNEntries entries, SVNEntry entry, String url, long revision, boolean delete) {        boolean save = false;        if (url != null) {            save |= entry.setURL(url);        }        if (revision >=0 && !entry.isScheduledForAddition() && !entry.isScheduledForReplacement()) {            save |= entry.setRevision(revision);        }        if (delete && (entry.isDeleted() || (entry.isAbsent() && entry.getRevision() != revision))) {            entries.deleteEntry(entry.getName());            save = true;        }        return save;    }