private byte[] fileId;  // 16-byte file ID from previous open
    
    public DurableHandleReconnect(byte[] fileId) {
        super(NAME);
        if (fileId.length != 16) {
            throw new IllegalArgumentException("File ID must be 16 bytes");
        }
        this.fileId = Arrays.copyOf(fileId, 16);
    }
    
    @Override

        }

        this.oplockLevel = buffer[bufferIndex + 2];
        bufferIndex += 4;
        bufferIndex += 4; // Reserved2

        this.fileId = new byte[16];
        System.arraycopy(buffer, bufferIndex, this.fileId, 0, 16);
        bufferIndex += 16;

        return bufferIndex - start;
    }

    /**
     * {@inheritDoc}
     *

        super(config, SMB2_CHANGE_NOTIFY);
        this.outputBufferLength = config.getNotifyBufferSize();
        this.fileId = fileId;
    }

    /**
     * Set the notification flags
     *
     * @param notifyFlags
     *            the notifyFlags to set
     */
    public void setNotifyFlags(final int notifyFlags) {
        this.notifyFlags = notifyFlags;

        testFileIdWriting(fileId3);
    }

    private void testFileIdWriting(byte[] fileId) {
        Configuration config = mock(Configuration.class);
        when(config.getNotifyBufferSize()).thenReturn(8192);
        Smb2ChangeNotifyRequest req = new Smb2ChangeNotifyRequest(config, fileId);
        byte[] buffer = new byte[512];
        req.writeBytesWireFormat(buffer, 0);

    @Test
    public void testDurableHandleReconnect() {
        byte[] fileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            fileId[i] = (byte) (i + 1);
        }

        DurableHandleReconnect reconnect = new DurableHandleReconnect(fileId);

        assertEquals("DHnC", new String(reconnect.getName()));
        assertArrayEquals(fileId, reconnect.getFileId());
        assertTrue(reconnect.size() > 0);

    }

    @Test
    @DisplayName("Constructor with fileId only should use empty fileName")
    void testConstructorWithFileIdOnly() throws Exception {
        Smb2CloseRequest requestWithFileIdOnly = new Smb2CloseRequest(mockConfig, testFileId);

        // Verify file ID is set
        Field fileIdField = Smb2CloseRequest.class.getDeclaredField("fileId");
        fileIdField.setAccessible(true);

    class SpecialValueConstants {

        @Test
        @DisplayName("Unspecified FileId should be 16 bytes of 0xFF")
        void testUnspecifiedFileId() {
            assertNotNull(Smb2Constants.UNSPECIFIED_FILEID, "Unspecified FileId should not be null");
            assertEquals(16, Smb2Constants.UNSPECIFIED_FILEID.length, "Unspecified FileId must be exactly 16 bytes");

            // Verify all bytes are 0xFF

        byte[] fileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            fileId[i] = (byte) (i + 1);
        }

        manager.updateHandleFileId(guid, fileId);

        HandleInfo info = manager.getHandleByGuid(guid);
        assertArrayEquals(fileId, info.getFileId());
    }

    @Test
    public void testGetHandleForReconnect() {

     */
    public int getIoctlFlags() {
        return this.ioctlFlags;
    }

    /**
     * Gets the file identifier from the response.
     *
     * @return the fileId
     */
    public byte[] getFileId() {
        return this.fileId;
    }

    /**
     * Gets the decoded output data from the response.
     *
     * @return the outputData
     */
    public Decodable getOutputData() {

 *
 * @author mbechler
 */
public interface RequestWithFileId {

    /**
     * Sets the file ID for this request.
     *
     * @param fileId the file ID to set
     */
    void setFileId(byte[] fileId);