*
     * @param config
     *            The configuration to use
     * @param fileId
     *            The file ID to close
     * @param fileName
     *            The name of the file being closed
     */
    public Smb2CloseRequest(final Configuration config, final byte[] fileId, final String fileName) {
        super(config, SMB2_CLOSE);
        this.fileId = fileId;

        this.fileId = fileId;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.RequestWithFileId#setFileId(byte[])
     */
    @Override
    public void setFileId(final byte[] fileId) {
        this.fileId = fileId;
    }

    /**
     * Sets the information type for the query
     *
     * @param infoType

     */
    @Override
    public void setFileId(final byte[] fileId) {
        this.fileId = fileId;
    }

    /**
     * Sets the padding for the read request
     *
     * @param padding
     *            the padding to set
     */
    public void setPadding(final byte padding) {
        this.padding = padding;
    }

    /**

    /**
     * Get the associated file object
     * @return the file object (can be null)
     */
    public Object getFile() {
        return file;
    }

    /**
     * Set the associated file object
     * @param file the file object
     */
    public void setFile(Object file) {
        this.file = file;
    }

    /**
     * Update the file ID after successful create response

        try {
            @SuppressWarnings("resource")
            final SmbTreeHandleImpl th = getTreeHandle();
            if (this.fileId != null && th.isConnected()) {
                th.send(new Smb2CloseRequest(th.getConfig(), this.fileId));
            }
        } finally {
            this.fileId = null;
        }
    }

 */
package jcifs.internal.smb2.persistent;

import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.concurrent.ConcurrentHashMap;

            assertTrue(result.contains("fileId=" + Hexdump.toHexString(fileId)));
            assertTrue(result.endsWith("]"));
        }

        @Test
        @DisplayName("Should handle null fileId in toString")
        void testToStringWithNullFileId() throws Exception {
            // Set oplockLevel but leave fileId as null

    @Test
    @DisplayName("Should handle different file IDs")
    void testDifferentFileIds() {
        // Given
        byte[] fileId1 = new byte[16];
        Arrays.fill(fileId1, (byte) 0x11);

        byte[] fileId2 = new byte[16];
        Arrays.fill(fileId2, (byte) 0xFF);

        byte[] fileId3 = new byte[16];
        for (int i = 0; i < 16; i++) {
            fileId3[i] = (byte) i;
        }

 * underlying storage device for a given file handle.
 *
 * @author mbechler
 */
public class Smb2FlushRequest extends ServerMessageBlock2Request<Smb2FlushResponse> implements RequestWithFileId {

    private byte[] fileId;

    /**
     * Constructs an SMB2 flush request
     * @param config the client configuration
     * @param fileId the file identifier to flush
     */

    
    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