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

        @DisplayName("Should handle buffer with offset correctly")
        void testReadWithBufferOffset() throws Exception {
            int offset = 10;
            byte[] buffer = new byte[64];
            byte[] fileId = createTestData(16);
            byte oplockLevel = 0x02;

            // Fill some random data before offset
            Arrays.fill(buffer, 0, offset, (byte) 0xAB);

}

func (w *writerAt) WriteAt(b []byte, offset int64) (n int, err error) {
	w.m.Lock()
	defer w.m.Unlock()

	if w.nextOffset == offset {
		n, err = w.w.Write(b)
		w.nextOffset += int64(n)
	} else {
		if offset > w.nextOffset+ftpMaxWriteOffset {
			return 0, fmt.Errorf("write offset %d is too far ahead of next offset %d", offset, w.nextOffset)
		}
		w.buffer[offset] = make([]byte, len(b))
		copy(w.buffer[offset], b)

    @DisplayName("writeBytesWireFormat writes StructureSize=4 and Reserved=0 at given offset")
    void writeBytesWireFormat_writesExpectedValuesAtOffset(int offset) {
        // Arrange
        Smb2LogoffRequest req = newRequest();
        byte[] buf = new byte[offset + 8]; // extra space for safety

        // Act
        int written = req.writeBytesWireFormat(buf, offset);

        // Assert: should write exactly 4 bytes

    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;
        int length = testData.length;

        // Act
        signingDigest.sign(testData, offset, length, request, response);

        // Assert
        verify(signingDigest, times(1)).sign(testData, offset, length, request, response);
    }

    @Test
    @DisplayName("Test sign method with different offsets")

        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;

						Name:     "gnu-sparse",
						Size:     6e10,
						SparseHoles: []sparseEntry{
							{Offset: 0e10, Length: 1e10 - 100},
							{Offset: 1e10, Length: 1e10 - 100},
							{Offset: 2e10, Length: 1e10 - 100},
							{Offset: 3e10, Length: 1e10 - 100},
							{Offset: 4e10, Length: 1e10 - 100},
							{Offset: 5e10, Length: 1e10 - 100},
						},
					}, nil},
					testReadFrom{fileOps{

        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