// Test with alternating pattern
        byte[] alternatingFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            alternatingFileId[i] = (byte) (i % 2 == 0 ? 0xAA : 0x55);
        }
        Smb2CloseRequest alternatingRequest = new Smb2CloseRequest(mockConfig, alternatingFileId, testFileName);
        testFileIdInRequest(alternatingRequest, alternatingFileId);
    }

        // Test with alternating pattern
        byte[] alternatingFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            alternatingFileId[i] = (byte) (i % 2 == 0 ? 0xAA : 0x55);
        }
        Smb2FlushRequest alternatingRequest = new Smb2FlushRequest(mockConfig, alternatingFileId);
        testFileIdInRequest(alternatingRequest, alternatingFileId);
    }

        int readDataAvailable = 256;
        int numberOfMessages = 5;
        int messageLength = 128;
        byte[] testData = { (byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC, (byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88 };

        // Write values to buffer at offset
        SMBUtil.writeInt4(namedPipeState, buffer, bufferIndex);
        SMBUtil.writeInt4(readDataAvailable, buffer, bufferIndex + 4);

            int flags = NegTokenInit.DELEGATION | NegTokenInit.INTEGRITY;
            byte[] mechToken = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
            byte[] mic = new byte[] { (byte) 0xAA, (byte) 0xBB, (byte) 0xCC };

            NegTokenInit original = new NegTokenInit(mechs, flags, mechToken, mic);
            byte[] firstEncoding = original.toByteArray();

                patternKey[i] = (byte) ((i % 2 == 0) ? 0xAA : 0x55);
            }
            SrvCopychunkCopy copy = new SrvCopychunkCopy(patternKey);
            byte[] buffer = new byte[100];

            // When
            copy.encode(buffer, 0);

            // Then
            for (int i = 0; i < SOURCE_KEY_SIZE; i++) {
                byte expected = (byte) ((i % 2 == 0) ? 0xAA : 0x55);

        Arrays.fill(allOnes, (byte) 0xFF);
        byte[] alternating = new byte[16];
        for (int i = 0; i < alternating.length; i++) {
            alternating[i] = (byte) (i % 2 == 0 ? 0xAA : 0x55);
        }

        RequestWithFileId request = new Smb2CloseRequest(mockConfig, emptyFileId);

        // All patterns should be accepted

			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *ChecksumInfo) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 3
	// write "PartNumber"
	err = en.Append(0x83, 0xaa, 0x50, 0x61, 0x72, 0x74, 0x4e, 0x75, 0x6d, 0x62, 0x65, 0x72)
	if err != nil {
		return
	}
	err = en.WriteInt(z.PartNumber)
	if err != nil {
		err = msgp.WrapError(err, "PartNumber")
		return
	}

    void testDeriveKeys_TestVectors() {
        // Given - Use known test vector (simplified for demonstration)
        byte[] testSessionKey = new byte[16];
        Arrays.fill(testSessionKey, (byte) 0xAA);
        byte[] testPreauth = new byte[64];
        Arrays.fill(testPreauth, (byte) 0xBB);

        // When

	if err != nil {
		return
	}
	err = en.WriteTime(z.Started)
	if err != nil {
		err = msgp.WrapError(err, "Started")
		return
	}
	// write "LastUpdate"
	err = en.Append(0xaa, 0x4c, 0x61, 0x73, 0x74, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65)
	if err != nil {
		return
	}
	err = en.WriteTime(z.LastUpdate)
	if err != nil {
		err = msgp.WrapError(err, "LastUpdate")
		return
	}

        SMBUtil.writeInt4(0, buffer, bodyStart + 12);

        // Write test data
        byte[] testData = new byte[dataLength];
        for (int i = 0; i < dataLength; i++) {
            testData[i] = (byte) (0xAA + i);
        }
        System.arraycopy(testData, 0, buffer, dataOffsetFromHeader, dataLength);

        // Use reflection to set headerStart