@Test
    @DisplayName("Test writeSetupWireFormat with offset")
    void testWriteSetupWireFormatWithOffset() {
        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        byte[] buffer = new byte[256];
        int offset = 50;
        int written = trans2SetFileInfo.writeSetupWireFormat(buffer, offset);

        // Should write 2 bytes at offset
        assertEquals(2, written);

        void testReadAtDifferentOffsets(int offset) throws SMBProtocolDecodingException {
            byte[] buffer = new byte[1024];
            byte[] responseData = createValidWriteResponse(2048, 1024);
            System.arraycopy(responseData, 0, buffer, offset, responseData.length);

            int bytesRead = response.readBytesWireFormat(buffer, offset);

            assertEquals(16, bytesRead);

func (d *naughtyDisk) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error) {
	if err := d.calcError(); err != nil {
		return 0, err
	}
	return d.disk.ReadFile(ctx, volume, path, offset, buf, verifier)
}

func (d *naughtyDisk) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
	if err := d.calcError(); err != nil {

func (b *streamingBitrotReader) ReadAt(buf []byte, offset int64) (int, error) {
	var err error
	if offset%b.shardSize != 0 {
		// Offset should always be aligned to b.shardSize
		// Can never happen unless there are programmer bugs
		return 0, errUnexpected
	}
	if b.rc == nil {
		// For the first ReadAt() call we need to open the stream for reading.
		b.currOffset = offset
		streamOffset := (offset/b.shardSize)*int64(b.h.Size()) + offset

        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }
        return offset;
    }

    @Override
    public int getPageSize() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (num == null) {

      @Nullable Object[] src, int offset, int len, T[] dst) {
    checkPositionIndexes(offset, offset + len, src.length);
    if (dst.length < len) {
      dst = newArray(dst, len);
    } else if (dst.length > len) {
      @Nullable Object[] unsoundlyCovariantArray = dst;
      unsoundlyCovariantArray[len] = null;
    }
    arraycopy(src, offset, dst, 0, len);
    return dst;
  }

  /**

    private final transient @Nullable Object[] alternatingKeysAndValues;
    private final transient int offset;
    private final transient int size;

    KeysOrValuesAsList(@Nullable Object[] alternatingKeysAndValues, int offset, int size) {
      this.alternatingKeysAndValues = alternatingKeysAndValues;
      this.offset = offset;
      this.size = size;
    }

    @Override
    public Object get(int index) {

        // Create buffer with offset
        byte[] buffer = new byte[20];
        int offset = 5;
        original.encode(buffer, offset);

        // Decode from offset
        FileEndOfFileInformation decoded = new FileEndOfFileInformation();
        int decodedBytes = decoded.decode(buffer, offset, 8);
        assertEquals(8, decodedBytes);

        // Verify the values match

	buf        []byte          // Holds bit-rot verified data
}

func (b *wholeBitrotReader) ReadAt(buf []byte, offset int64) (n int, err error) {
	if b.buf == nil {
		b.buf = make([]byte, b.tillOffset-offset)
		if _, err := b.disk.ReadFile(context.TODO(), b.volume, b.filePath, offset, b.buf, b.verifier); err != nil {
			return 0, err
		}
	}

        assertEquals(0, SMBUtil.readInt2(buffer, offset + 2));

        // Verify Reserved (4 bytes at offset+4, should be 0)
        assertEquals(0, SMBUtil.readInt4(buffer, offset + 4));

        // Verify file ID is copied correctly (16 bytes starting at offset+8)
        byte[] copiedFileId = new byte[16];
        System.arraycopy(buffer, offset + 8, copiedFileId, 0, 16);
        assertArrayEquals(testFileId, copiedFileId);
    }