byte[] dst = new byte[2];
        int written = instance.writeParameterWordsWireFormat(dst, 0);
        assertEquals(2, written, "writeParameterWordsWireFormat should write exactly 2 bytes");
        // SMBUtil.writeInt2 writes the low byte first (little‑endian)
        assertEquals((byte) (TEST_SID & 0xFF), dst[0]);
        assertEquals((byte) ((TEST_SID >> 8) & 0xFF), dst[1]);
    }

    @Test
    void testNegativeSidWrapsCorrectly() {

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        dst[dstIndex] = this.getSubCommand();
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        SMBUtil.writeInt2(this.pipeFid, dst, dstIndex);
        dstIndex += 2;
        return 4;
    }

    @Override
    protected int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;

        dstIndex += 2;
        SMBUtil.writeInt4(this.flags0, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.rootDirectoryFid, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.desiredAccess, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.allocationSize, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt4(this.extFileAttributes, dst, dstIndex);

        SMBUtil.writeInt2(this.flags2, dst, dstIndex + SmbConstants.FLAGS_OFFSET + 1);
        dstIndex += SmbConstants.TID_OFFSET;
        SMBUtil.writeInt2(this.tid, dst, dstIndex);
        SMBUtil.writeInt2(this.pid, dst, dstIndex + 2);
        SMBUtil.writeInt2(this.uid, dst, dstIndex + 4);
        SMBUtil.writeInt2(this.mid, dst, dstIndex + 6);

        if (this.inputData != null) {
            SMBUtil.writeInt4(dstIndex - getHeaderStart(), dst, inputOffsetOffset);
            final int len = this.inputData.encode(dst, dstIndex);
            SMBUtil.writeInt4(len, dst, inputLengthOffset);
            dstIndex += len;
        } else {
            SMBUtil.writeInt4(0, dst, inputOffsetOffset);
            SMBUtil.writeInt4(0, dst, inputLengthOffset);
        }

            this.passwordLength = 1;
        }

        dst[dstIndex] = this.disconnectTid ? (byte) 0x01 : (byte) 0x00;
        dstIndex++;
        dst[dstIndex++] = (byte) 0x00;
        SMBUtil.writeInt2(this.passwordLength, dst, dstIndex);
        return 4;
    }

    @SuppressWarnings("deprecation")
    private static boolean isExternalAuth(final NtlmPasswordAuthenticator pwAuth) {

        dst[start + ANDX_COMMAND_OFFSET] = this.andxCommand;
        dst[start + ANDX_RESERVED_OFFSET] = (byte) 0x00;
        this.andxOffset = dstIndex - this.headerStart;
        SMBUtil.writeInt2(this.andxOffset, dst, start + ANDX_OFFSET_OFFSET);

        this.andx.setUseUnicode(this.isUseUnicode());
        if (this.andx instanceof AndXServerMessageBlock) {

            /*

        boolean expectedDirectory = false;

        // Encode test data
        int offset = 0;
        SMBUtil.writeInt8(expectedAllocationSize, buffer, offset);
        offset += 8;
        SMBUtil.writeInt8(expectedEndOfFile, buffer, offset);
        offset += 8;
        SMBUtil.writeInt4(expectedNumberOfLinks, buffer, offset);
        offset += 4;
        buffer[offset++] = (byte) (expectedDeletePending ? 1 : 0);

        SMBUtil.writeInt4(0, buffer, 0); // nextEntryOffset
        SMBUtil.writeInt4(0, buffer, 4); // fileIndex
        SMBUtil.writeInt8(0, buffer, 8); // creationTime - raw 0 in wire format
        SMBUtil.writeInt8(0, buffer, 16); // lastAccessTime - raw 0 in wire format
        SMBUtil.writeInt8(0, buffer, 24); // lastWriteTime - raw 0 in wire format
        SMBUtil.writeInt8(0, buffer, 32); // changeTime - raw 0 in wire format

     */
    @Override
    public int encode(final byte[] dst, int dstIndex) {
        final int start = dstIndex;
        SMBUtil.writeInt8(this.offset, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt8(this.length, dst, dstIndex);
        dstIndex += 8;

        SMBUtil.writeInt4(this.flags, dst, dstIndex);
        dstIndex += 4;
        dstIndex += 4; // Reserved
        return dstIndex - start;
    }