}

    /**
     * Reads the lock state from the lock file, possibly writing out a new lock file if not present or empty.
     */
    public LockState ensureLockState() throws IOException {
        return lockStateAccess.ensureLockState(lockFileAccess);
    }

    public LockState markClean(LockState lockState) throws IOException {
        LockState newState = lockState.completeUpdate();

    public LockStateAccess(LockStateSerializer protocol) {
        this.protocol = protocol;
        stateRegionSize = STATE_CONTENT_START + protocol.getSize();
    }

    public LockState ensureLockState(RandomAccessFile lockFileAccess) throws IOException {
        if (lockFileAccess.length() == 0) {
            // File did not exist before locking, use some initial state

                    // We have an exclusive lock (whether we asked for it or not).

                    // Update the state region
                    lockState = lockFileAccess.ensureLockState();

                    // Acquire an exclusive lock on the information region and write our details there