int offset = 0;
        if (domainLength > 0) {
            writeUShort(targetInfo, offset, 2);
            offset += 2;
            writeUShort(targetInfo, offset, domainLength);
            offset += 2;
            System.arraycopy(domain, 0, targetInfo, offset, domainLength);
            offset += domainLength;
        }
        if (serverLength > 0) {

    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

}

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

    return ImmutableList.of(element);
  }

  @Override
  boolean isPartialView() {
    return false;
  }

  @Override
  int copyIntoArray(@Nullable Object[] dst, int offset) {
    dst[offset] = element;
    return offset + 1;
  }

  @Override
  public final int hashCode() {
    return element.hashCode();
  }

  @Override
  public String toString() {
    return '[' + element.toString() + ']';

        }
    }

    /**
     * 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 {

	if offset < 0 || length < 0 {
		return -1, errInvalidArgument
	}
	if offset+length > totalLength {
		return -1, errInvalidArgument
	}

	if length == 0 {
		return 0, nil
	}

	reader := newParallelReader(readers, e, offset, totalLength)
	if len(prefer) == len(readers) {

        message[8] = 0x03;

        // LM Response (24 bytes at offset 64)
        message[12] = 24; // Length
        message[13] = 0;
        message[14] = 24; // Max Length
        message[15] = 0;
        message[16] = 64; // Offset
        message[17] = 0;
        message[18] = 0;
        message[19] = 0;

        // NT Response (24 bytes at offset 88)
        message[20] = 24; // Length
        message[21] = 0;

						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{

        byte[] dst = new byte[200];

        int offset = 50;
        int length = name.writeWireFormat(dst, offset);

        // Check first byte at offset
        assertEquals(0x20, dst[offset]);

        // Check type encoding at correct offset
        assertEquals('C', dst[offset + 31]);
        assertEquals('A', dst[offset + 32]);

        assertTrue(length > 33);
    }

    @Test