if (initialBytes == null) {
        return checkNotNull(bytes);
      } else {
        byte[] result = new byte[initialBytes.length + bytes.length];
        System.arraycopy(initialBytes, 0, result, 0, initialBytes.length);
        System.arraycopy(bytes, 0, result, initialBytes.length, bytes.length);
        return result;
      }
    }

    @Override
    public byte[] getSinkContents() throws IOException {

  public final Entry<String, String>[] createArray(int length) {
    return (Entry<String, String>[]) new Entry<?, ?>[length];
  }

  @Override
  public final String[] createKeyArray(int length) {
    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override

  public final Entry<String, String>[] createArray(int length) {
    return (Entry<String, String>[]) new Entry<?, ?>[length];
  }

  @Override
  public final String[] createKeyArray(int length) {
    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override

        checkArgument(
            fromUpperBounds.length == toUpperBounds.length
                && fromLowerBounds.length == toLowerBounds.length,
            "Incompatible type: %s vs. %s",
            fromWildcardType,
            to);
        for (int i = 0; i < fromUpperBounds.length; i++) {
          populateTypeMappings(mappings, fromUpperBounds[i], toUpperBounds[i]);
        }

    private final long sourceOffset;
    private final long targetOffset;
    private final int length;

    /**
     * Constructs a server copy chunk descriptor
     * @param soff the source file offset
     * @param toff the target file offset
     * @param len the length of data to copy
     */
    public SrvCopychunk(final long soff, final long toff, final int len) {
        this.sourceOffset = soff;

        // Act
        byte[] result = NtlmUtil.computeResponse(key, serverChallenge, clientData, 0, clientData.length);

        // Assert: result = mac(16) + clientData
        assertEquals(16 + clientData.length, result.length);
        assertArrayEquals(clientData, Arrays.copyOfRange(result, 16, 16 + clientData.length));
    }

    @Test
    @DisplayName("getLMv2Response(byte[]): delegates to computeResponse")

     * - Byte 1: High bit of 17-bit length field
     * - Bytes 2-3: Lower 16 bits of length field
     */
    private static byte[] messageHeader(int length) {
        byte[] h = new byte[4];
        h[0] = (byte) SessionServicePacket.SESSION_MESSAGE;
        h[1] = (byte) ((length >> 16) & 0x01);
        h[2] = (byte) ((length >> 8) & 0xFF);
        h[3] = (byte) (length & 0xFF);
        return h;
    }

    /**

	length = int64(len(uploadContent))
	_, err = obj.PutObject(context.Background(), "bucket", "object", mustGetPutObjReader(t, bytes.NewBufferString(uploadContent), length, "", ""), opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}

	var bytesBuffer bytes.Buffer
	err = GetObject(context.Background(), obj, "bucket", "object", 0, length, &bytesBuffer, "", opts)
	if err != nil {

        // Then - Verify keys are derived and different
        assertNotNull(signingKey300);
        assertNotNull(signingKey311);
        assertEquals(16, signingKey300.length);
        assertEquals(16, signingKey311.length);
        assertFalse(Arrays.equals(signingKey300, signingKey311));
    }

    @Test
    @DisplayName("Should handle different session key sizes")

        final int length = cipherText.length;

        if (length % 8 != 0) {
            // DES requires 8-byte blocks
            throw new IllegalArgumentException("Array must be a multiple of 8 bytes for DES encryption");
        }

        final byte[] clearText = new byte[length];
        final int count = length / 8;

        for (int i = 0; i < count; i++) {