* @return {@code true} if the argument is a 6to4 address
   */
  public static boolean is6to4Address(Inet6Address ip) {
    byte[] bytes = ip.getAddress();
    return (bytes[0] == (byte) 0x20) && (bytes[1] == (byte) 0x02);
  }

  /**
   * Returns the IPv4 address embedded in a 6to4 address.
   *
   * @param ip {@link Inet6Address} to be examined for embedded IPv4 in 6to4 address

        new byte[] {
          0x01, (byte) 0xc0, 0x00, 0x00,
          0x00, 0x00, 0x00, 0x00,
          0x00, 0x00, 0x00, 0x00,
          0x00, 0x00, 0x00, 0x00,
          0x14, 0x00, 0x00, 0x00,
          0x00, 0x00, 0x04, 0x00,
          0x00, 0x00, 0x00, 0x14,
          0x00, 0x00, 0x00, 0x18,
          0x28, 0x00, 0x00, 0x00,
          0x00, 0x00, 0x00, 0x00,
          0x02, 0x00, 0x00, 0x00,
          0x00, 0x00, 0x00, 0x00

        return Stream.of(Arguments.of(new byte[] {}, ""), Arguments.of(new byte[] { (byte) 0x00 }, "00"),
                Arguments.of(new byte[] { (byte) 0x0F }, "0f"), Arguments.of(new byte[] { (byte) 0x10 }, "10"),
                Arguments.of(new byte[] { (byte) 0xAB }, "ab"),
                Arguments.of(new byte[] { (byte) 0x7F, (byte) 0x80, (byte) 0xFF }, "7f80ff"));
    }

        // Verify FID (2 bytes)
        assertEquals(fid, SMBUtil.readInt2(dst, dstIndex + 4));

        // Verify watchTree flag (1 byte)
        assertEquals(0x00, dst[dstIndex + 6]);

        // Verify reserved byte (1 byte)
        assertEquals(0x00, dst[dstIndex + 7]);
    }

    @Test
    @DisplayName("Test writeSetupWireFormat with watchTree true")
    void testWriteSetupWireFormatWatchTreeTrue() {

        // total=4, unused=1, used=2, string="AB"
        byte[] data = new byte[] { 0x04, 0x00, 0x00, 0x00, // total
                0x01, 0x00, 0x00, 0x00, // unused
                0x02, 0x00, 0x00, 0x00, // used
                0x00, 0x00, // unused char
                0x41, 0x00, // 'A'
                0x42, 0x00 // 'B'
        };
        PacDataInputStream pdis = createInputStream(data);

     */
    @Test
    void testReadParameterWordsWireFormat() {
        SmbComWriteAndXResponse response = new SmbComWriteAndXResponse();
        byte[] buffer = new byte[] { 0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; // count = 10

        int bytesRead = response.readParameterWordsWireFormat(buffer, 0);

        // The count should be read from the buffer.
        assertEquals(10L, response.count);

        testBuffer[10] = 0x00; // Identifier authority
        testBuffer[11] = 0x00;
        testBuffer[12] = 0x00;
        testBuffer[13] = 0x00;
        testBuffer[14] = 0x00;
        testBuffer[15] = 0x01;
        testBuffer[16] = 0x00; // Sub-authority
        testBuffer[17] = 0x00;
        testBuffer[18] = 0x00;
        testBuffer[19] = 0x00;

        // Test decode

            basicInfo.attributes = 0x20; // Archive attribute
            basicInfo.createTime = 1000000L;
            basicInfo.lastWriteTime = 2000000L;
            basicInfo.lastAccessTime = 1500000L;
            basicInfo.changeTime = 2500000L;

            assertEquals(0x20, basicInfo.getAttributes());
            assertEquals(1000000L, basicInfo.getCreateTime());

    hasher = HASH_FN.newHasher();
    hasher
        .putByte((byte) 0x01)
        .putByte((byte) 0x01)
        .putByte((byte) 0x00)
        .putByte((byte) 0x01)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00)
        .putByte((byte) 0x00);
    assertEquals(hashCode, hasher.hash().asLong());

    hasher = HASH_FN.newHasher();
    hasher
        .putChar((char) 0x0101)

     * implementation.
     */

    /**
     * SMB command to create a directory.
     */
    public static final byte SMB_COM_CREATE_DIRECTORY = (byte) 0x00;

    /**
     * SMB command to delete a directory.
     */
    public static final byte SMB_COM_DELETE_DIRECTORY = (byte) 0x01;

    /**
     * SMB command to close a file handle.
     */