return CONTEXT_NAME_BYTES;
    }

    /**
     * Gets the lease key for this directory lease context
     * @return the lease key
     */
    public Smb2LeaseKey getLeaseKey() {
        return leaseKey;
    }

    /**
     * Sets the lease key for this directory lease context
     * @param leaseKey the lease key to set
     */
    public void setLeaseKey(Smb2LeaseKey leaseKey) {

            throw new IllegalArgumentException("Lease key cannot be null");
        }
        if (key.length != LEASE_KEY_SIZE) {
            throw new IllegalArgumentException("Lease key must be 16 bytes, got " + key.length);
        }
        this.key = Arrays.copyOf(key, LEASE_KEY_SIZE);
    }

    /**
     * Get the lease key bytes
     *
     * @return copy of the 16-byte lease key
     */
    public byte[] getKey() {

        scheduler.scheduleAtFixedRate(this::cleanupExpiredEntries, 60, 60, TimeUnit.SECONDS);
    }

    /**
     * Request a directory lease
     *
     * @param directoryPath directory path
     * @param requestedState requested lease state
     * @param scope cache scope
     * @return lease key
     */
    public Smb2LeaseKey requestDirectoryLease(String directoryPath, int requestedState, DirectoryCacheScope scope) {

- If you are using Kubernetes to manage `docker` containers, please be aware Kubernetes has been validated to work with docker 1.9.1, docker 1.11.2 (#23397), and docker 1.12.0 (#28698)
- If you upgrade your apiserver to 1.4.x but leave your kubelets at 1.3.x, they will not report init container status, but init containers will work properly.  Upgrading kubelets to 1.4.x fixes this.

        SMBUtil.writeInt4(32, buffer, 12); // DataLength (standard lease only)

        // Write name
        System.arraycopy("DLse".getBytes(), 0, buffer, 16, 4);

        // Write lease key
        Smb2LeaseKey key = new Smb2LeaseKey();
        key.encode(buffer, 24);

        // Write lease state
        SMBUtil.writeInt4(DirectoryLeaseState.DIRECTORY_READ_HANDLE, buffer, 40);

     */
    public boolean isDurableHandleGranted() {
        return hasDurableHandleResponse();
    }

    /**
     * Get the lease key from the response
     * @return the lease key or null if no lease was granted
     */
    public jcifs.internal.smb2.lease.Smb2LeaseKey getLeaseKey() {
        LeaseV2CreateContextResponse v2 = getLeaseV2Context();
        if (v2 != null) {
            return v2.getLeaseKey();

        return CONTEXT_NAME_BYTES;
    }

    /**
     * Gets the lease key for this V2 lease request
     * @return the lease key
     */
    public Smb2LeaseKey getLeaseKey() {
        return leaseKey;
    }

    /**
     * Sets the lease key for this V2 lease request
     * @param leaseKey the lease key to set
     */
    public void setLeaseKey(Smb2LeaseKey leaseKey) {

    /**
     * Gets the lease state granted by the server for V2
     * @return the granted lease state
     */
    public int getLeaseState() {
        return leaseState;
    }

    /**
     * Gets the lease flags from the V2 server response
     * @return the lease flags
     */
    public int getLeaseFlags() {
        return leaseFlags;
    }

    /**
     * Gets the parent lease key from the V2 response

     */
    public Smb2LeaseKey getLeaseKey() {
        return leaseKey;
    }

    /**
     * Gets the lease state being acknowledged
     * @return the lease state
     */
    public int getLeaseState() {
        return leaseState;
    }

    /**
     * Gets the lease flags for this acknowledgment
     * @return the lease flags
     */
    public int getLeaseFlags() {
        return flags;
    }

    /** Whether to use SMB2/SMB3 leases for caching */
    protected boolean useLease = true;
    /** Lease timeout in milliseconds */
    protected int leaseTimeout = 30000;
    /** Maximum number of concurrent leases */
    protected int maxLeases = 1000;
    /** Preferred lease version (1 or 2) */
    protected int leaseVersion = 2;
    /** Lease break timeout in seconds (per MS-SMB2 spec) */
    protected int leaseBreakTimeout = 60;