require(streamId and 0x80000000.toInt() == 0) { "reserved bit set: $streamId" }
    sink.writeMedium(length)
    sink.writeByte(type and 0xff)
    sink.writeByte(flags and 0xff)
    sink.writeInt(streamId and 0x7fffffff)
  }

  @Throws(IOException::class)
  override fun close() {
    withLock {
      closed = true
      sink.close()
    }
  }

        byte[] buffer = new byte[100];
        int bufferIndex = 50;

        // Set test values
        int testCapabilities = 0xABCDEF00;
        byte[] testGuid = new byte[16];
        Arrays.fill(testGuid, (byte) 0xFF);
        int testSecurityMode = 0x0001;
        int testDialect = 0x0202;

        // Write to buffer
        SMBUtil.writeInt4(testCapabilities, buffer, bufferIndex);

     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder ret = new StringBuilder();
        for (final byte element : this.b) {
            final int n = element & 0xff;
            if (n <= 0x0f) {
                ret.append("0");
            }
            ret.append(Integer.toHexString(n));
        }
        return ret.toString();
    }

        bufferIndex += 8;
        fileType = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        deviceState = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        directory = (buffer[bufferIndex++] & 0xFF) > 0;

        return bufferIndex - start;
    }

    @Override
    int readBytesWireFormat(final byte[] buffer, final int bufferIndex) {
        return 0;
    }

    @Override

        assertEquals(expectedSize, leaseContext.size());
    }

    @Test
    @DisplayName("Should set and get lease key")
    void testLeaseKeyAccessors() {
        byte[] newKeyBytes = new byte[] { (byte) 0xFF, (byte) 0xFE, (byte) 0xFD, (byte) 0xFC, (byte) 0xFB, (byte) 0xFA, (byte) 0xF9,
                (byte) 0xF8, (byte) 0xF7, (byte) 0xF6, (byte) 0xF5, (byte) 0xF4, (byte) 0xF3, (byte) 0xF2, (byte) 0xF1, (byte) 0xF0 };

        tmp = new byte[TMP_BUFFER_SIZE];
    }

    @Override
    public synchronized int read() throws IOException {
        if (read(tmp, 0, 1) < 0) {
            return -1;
        }
        return tmp[0] & 0xFF;
    }

    @Override
    public synchronized int read(final byte[] b) throws IOException {
        return read(b, 0, b.length);
    }

    /* This method will not return until len bytes have been read

        int expectedAttributes = SmbConstants.ATTR_HIDDEN | SmbConstants.ATTR_SYSTEM | SmbConstants.ATTR_DIRECTORY;
        assertEquals((byte) (expectedAttributes & 0xFF), dst[dstIndex]);
        assertEquals((byte) ((expectedAttributes >> 8) & 0xFF), dst[dstIndex + 1]);
    }

    /**
     * Test writeBytesWireFormat with ASCII encoding
     */
    @Test

    }

    @Test
    @DisplayName("setFileId should update file ID")
    void testSetFileId() throws Exception {
        byte[] newFileId = new byte[16];
        Arrays.fill(newFileId, (byte) 0xFF);

        request.setFileId(newFileId);

        Field fileIdField = Smb2CloseRequest.class.getDeclaredField("fileId");
        fileIdField.setAccessible(true);

        assertEquals("Pattern_V1", CompressionNegotiateContext.getAlgorithmName(CompressionNegotiateContext.COMPRESSION_PATTERN_V1));
        assertTrue(CompressionNegotiateContext.getAlgorithmName(0xFF).startsWith("Unknown"));
    }

    @Test
    @DisplayName("Test empty algorithms context")
    public void testEmptyAlgorithms() {

        try {
            descr = DESCR[which].getBytes("ASCII");
        } catch (final UnsupportedEncodingException uee) {
            return 0;
        }

        writeInt2(subCommand & 0xFF, dst, dstIndex);
        dstIndex += 2;
        System.arraycopy(descr, 0, dst, dstIndex, descr.length);
        dstIndex += descr.length;
        writeInt2(0x0001, dst, dstIndex);
        dstIndex += 2;