class WindowsComputerSystem extends AbstractComputerSystem {

    private final Supplier<Pair<String, String>> manufacturerModel = memoize(
            WindowsComputerSystem::queryManufacturerModel);
    private final Supplier<Pair<String, String>> serialNumberUUID = memoize(
            WindowsComputerSystem::querySystemSerialNumberUUID);

    @Override
    public String getManufacturer() {
        return manufacturerModel.get().getA();
    }

    @Override
    public String getModel() {
        return manufacturerModel.get().getB();
    }

    @Override
    public String getSerialNumber() {
        return serialNumberUUID.get().getA();
    }

    @Override
    public String getHardwareUUID() {
        return serialNumberUUID.get().getB();
    }

    @Override
    public Firmware createFirmware() {
        return new WindowsFirmware();
    }

    @Override
    public Baseboard createBaseboard() {
        return new WindowsBaseboard();
    }

    private static Pair<String, String> queryManufacturerModel() {<FILL_FUNCTION_BODY>}

    private static Pair<String, String> querySystemSerialNumberUUID() {
        String serialNumber = null;
        String uuid = null;
        WmiResult<ComputerSystemProductProperty> win32ComputerSystemProduct = Win32ComputerSystemProduct
                .queryIdentifyingNumberUUID();
        if (win32ComputerSystemProduct.getResultCount() > 0) {
            serialNumber = WmiUtil.getString(win32ComputerSystemProduct,
                    ComputerSystemProductProperty.IDENTIFYINGNUMBER, 0);
            uuid = WmiUtil.getString(win32ComputerSystemProduct, ComputerSystemProductProperty.UUID, 0);
        }
        if (Util.isBlank(serialNumber)) {
            serialNumber = querySerialFromBios();
        }
        if (Util.isBlank(serialNumber)) {
            serialNumber = Constants.UNKNOWN;
        }
        if (Util.isBlank(uuid)) {
            uuid = Constants.UNKNOWN;
        }
        return new Pair<>(serialNumber, uuid);
    }

    private static String querySerialFromBios() {
        WmiResult<BiosSerialProperty> serialNum = Win32Bios.querySerialNumber();
        if (serialNum.getResultCount() > 0) {
            return WmiUtil.getString(serialNum, BiosSerialProperty.SERIALNUMBER, 0);
        }
        return null;
    }
}

        String manufacturer = null;
        String model = null;
        WmiResult<ComputerSystemProperty> win32ComputerSystem = Win32ComputerSystem.queryComputerSystem();
        if (win32ComputerSystem.getResultCount() > 0) {
            manufacturer = WmiUtil.getString(win32ComputerSystem, ComputerSystemProperty.MANUFACTURER, 0);
            model = WmiUtil.getString(win32ComputerSystem, ComputerSystemProperty.MODEL, 0);
        }
        return new Pair<>(Util.isBlank(manufacturer) ? Constants.UNKNOWN : manufacturer,
                Util.isBlank(model) ? Constants.UNKNOWN : model);
    
<methods>public non-sealed void <init>() ,public oshi.hardware.Baseboard getBaseboard() ,public oshi.hardware.Firmware getFirmware() ,public java.lang.String toString() <variables>private final Supplier<oshi.hardware.Baseboard> baseboard,private final Supplier<oshi.hardware.Firmware> firmware