return dstIndex - start;
    }

    @Override
    protected int writeBytesWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        dst[dstIndex] = (byte) 0x01; /* BufferFormat */
        dstIndex++;
        SMBUtil.writeInt2(this.count, dst, dstIndex); /* DataLength? */
        dstIndex += 2;
        System.arraycopy(this.b, this.off, dst, dstIndex, this.count);

    void constructorMasksValue(int input) {
        NdrShort ns = new NdrShort(input);
        // NdrShort masks to 0xFF (8 bits) in its constructor
        int expected = input & 0xFF;
        assertEquals(expected, ns.value, "value should be masked to 0xFF before storing");
    }

    /**
     * Round-trip encode/decode for a selection of representative values.
     */
    @ParameterizedTest

                Name name;
                NbtAddress addr;
                char c = '.';

                ip = i = 0;
                for (; i < data.length && c == '.'; i++) {
                    int b = 0x00;

                    for (; i < data.length && (c = data[i]) >= 48 && c <= 57; i++) {
                        b = b * 10 + c - '0';
                    }
                    ip = (ip << 8) + b;
                }

    }
    return headerEntries(*nameValues)
  }

  private fun writeMedium(
    sink: BufferedSink,
    i: Int,
  ) {
    sink.writeByte(i ushr 16 and 0xff)
    sink.writeByte(i ushr 8 and 0xff)
    sink.writeByte(i and 0xff)
  }

   */
  public void testIsWellFormed_4BytesSamples() {
    // Valid 4 byte.
    assertWellFormed(0xF0, 0xA4, 0xAD, 0xA2);
    // Bad trailing bytes
    assertNotWellFormed(0xF0, 0xA4, 0xAD, 0x7F);
    assertNotWellFormed(0xF0, 0xA4, 0xAD, 0xC0);
    // Special cases for byte2
    assertNotWellFormed(0xF0, 0x8F, 0xAD, 0xA2);
    assertNotWellFormed(0xF4, 0x90, 0xAD, 0xA2);
  }

        // Check FID (little-endian)
        assertEquals(0x34, dst[0] & 0xFF);
        assertEquals(0x12, dst[1] & 0xFF);
        // Check count
        assertEquals(10, dst[2] & 0xFF);
        assertEquals(0, dst[3] & 0xFF);
        // Check offset
        assertEquals(0x78, dst[4] & 0xFF);
        assertEquals(0x56, dst[5] & 0xFF);
    }

    /**
     * Test writeBytesWireFormat writes data correctly

        this.domain = domain;
        this.serverTypes = serverTypes;
        this.name = "\\PIPE\\LANMAN";

        this.maxParameterCount = 8;
        this.maxDataCount = 16384;
        this.maxSetupCount = (byte) 0x00;
        this.setupCount = 0;
        this.timeout = 5000;
    }

    @Override
    public void reset(final int key, final String lastN) {
        super.reset();
        this.lastName = lastN;
    }

    /** Maximum supported SMB Direct protocol version (1.0) */
    public static final int MAX_VERSION = 0x0100; // SMB Direct 1.0
    /** SMB Direct negotiate request message type */
    public static final int NEGOTIATE_REQUEST = 0x01;

    // Message fields
    private int minVersion = MIN_VERSION;
    private int maxVersion = MAX_VERSION;
    private int reserved = 0;
    private int creditsRequested = RdmaCapabilities.DEFAULT_SEND_CREDIT_TARGET;

    /**
     * File information class for both names directory information.
     */
    public static final byte FILE_BOTH_DIRECTORY_INFO = 0x03;

    /**
     * File information class for file names only.
     */
    public static final byte FILE_NAMES_INFO = 0x0C;

    /**
     * File information class for both names with file IDs.
     */
    public static final byte FILE_ID_BOTH_DIRECTORY_INFO = 0x24;

	return nil
}

func findSignatureInBlock(b []byte) int {
	for i := len(b) - directoryEndLen; i >= 0; i-- {
		// defined from directoryEndSignature in struct.go
		if b[i] == 'P' && b[i+1] == 'K' && b[i+2] == 0x05 && b[i+3] == 0x06 {
			// n is length of comment
			n := int(b[i+directoryEndLen-2]) | int(b[i+directoryEndLen-1])<<8
			if n+directoryEndLen+i > len(b) {
				// Truncated comment.