@DisplayName("writeAndXWireFormat without andx writes 0xFF and sentinel offset")
    void testWriteAndXWireFormatWithoutAndx() {
        DummyAndXBlock block = new DummyAndXBlock();
        byte[] buf = new byte[128];
        int n = block.writeAndXWireFormat(buf, 0);

        assertTrue(n > 0);
        // Common AndX header: command at +1, reserved at +2, offset at +3/+4

    return new SubList(fromIndex, toIndex - fromIndex);
  }

  private final class SubList extends ImmutableList<E> {
    final transient int offset;
    final transient int length;

    SubList(int offset, int length) {
      this.offset = offset;
      this.length = length;
    }

    @Override
    public int size() {
      return length;
    }

    @Override

        byte[] buffer = new byte[512];
        int offset = 0;

        // Set header start position for the response
        setHeaderStart(response, 64);

        // Write structure header (9 bytes)
        SMBUtil.writeInt2(9, buffer, offset); // Structure size
        SMBUtil.writeInt2(80 - 64, buffer, offset + 2); // Buffer offset (relative to header)
        SMBUtil.writeInt4(50, buffer, offset + 4); // Total length of notification data

        }
    }

    /**
     * Validate offset and length for file operations
     *
     * @param offset file offset
     * @param length operation length
     * @param fileSize total file size
     * @throws SmbException if parameters are invalid
     */
    public void validateFileOperation(long offset, long length, long fileSize) throws SmbException {

    public int encode(byte[] buffer, int offset) {
        int start = offset;

        // Write context header
        SMBUtil.writeInt4(0, buffer, offset); // Next (offset to next context, 0 for last)
        offset += 4;

        SMBUtil.writeInt2(16, buffer, offset); // NameOffset (from start of context)
        offset += 2;

        SMBUtil.writeInt2(4, buffer, offset); // NameLength
        offset += 2;

        SMBUtil.writeInt2(0x8004, buffer, 22); // Control flags
        SMBUtil.writeInt4(0, buffer, 24); // Owner offset
        SMBUtil.writeInt4(0, buffer, 28); // Group offset
        SMBUtil.writeInt4(0, buffer, 32); // SACL offset
        SMBUtil.writeInt4(0, buffer, 36); // DACL offset

        int result = response.readBytesWireFormat(buffer, bufferIndex);

        assertNotNull(response.getInfo());

        assertEquals(SmbComTransaction.TRANS_CALL_NAMED_PIPE, dst[offset]);
        assertEquals((byte) 0x00, dst[offset + 1]);
        assertEquals((byte) 0x00, dst[offset + 2]);
        assertEquals((byte) 0x00, dst[offset + 3]);
    }

    @Test
    @DisplayName("Test readSetupWireFormat returns 0")
    void testReadSetupWireFormat() {
        // Given

    @Test
    @DisplayName("Test decode with buffer offset")
    void testDecodeWithBufferOffset() throws SMBProtocolDecodingException {
        // Prepare test data with offset
        byte[] buffer = new byte[20]; // Extra space to test offset
        int bufferIndex = 7; // Start at offset 7
        long expectedIndexNumber = 0xFEDCBA9876543210L;

        // Encode test data at offset

            // When
            int offset1 = chunk1.encode(buffer, 0);
            int offset2 = chunk2.encode(buffer, offset1);
            int offset3 = chunk3.encode(buffer, offset1 + offset2);

            // Then
            assertEquals(EXPECTED_SIZE, offset1);
            assertEquals(EXPECTED_SIZE, offset2);
            assertEquals(EXPECTED_SIZE, offset3);

            // Verify first chunk

        }

        @ParameterizedTest
        @DisplayName("Should handle various offset values")
        @ValueSource(longs = { 0L, 1L, 512L, 1024L, 4096L, 1048576L, Long.MAX_VALUE })
        void testVariousOffsets(long offset) {
            assertDoesNotThrow(() -> request.setOffset(offset));
        }

        @ParameterizedTest
        @DisplayName("Should handle various remaining bytes values")