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diff --git a/examples/ivicore/qface-tutorial/chapter6-own-backend/backend_dbus/instrumentclusterbackend.h b/examples/ivicore/qface-tutorial/chapter6-own-backend/backend_dbus/instrumentclusterbackend.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 Luxoft Sweden AB
+** Copyright (C) 2018 Pelagicore AG
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtIvi module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD-QTAS$
+** Commercial License Usage
+** Licensees holding valid commercial Qt Automotive Suite licenses may use
+** this file in accordance with the commercial license agreement provided
+** with the Software or, alternatively, in accordance with the terms
+** contained in a written agreement between you and The Qt Company.  For
+** licensing terms and conditions see https://www.qt.io/terms-conditions.
+** For further information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+** SPDX-License-Identifier: BSD-3-Clause
+**
+****************************************************************************/
+
+#ifndef INSTRUMENTCLUSTERBACKEND_H
+#define INSTRUMENTCLUSTERBACKEND_H
+
+#include "instrumentclusterbackendinterface.h"
+#include "instrumentcluster_interface.h"
+
+class InstrumentClusterBackend : public InstrumentClusterBackendInterface
+{
+    Q_OBJECT
+public:
+    InstrumentClusterBackend(QObject *parent = nullptr);
+
+public:
+    virtual void initialize() override;
+
+    void setupConnection();
+    void fetchSpeed();
+    void fetchRpm();
+    void fetchFuel();
+    void fetchTemperature();
+    void fetchSystemType();
+    void fetchCurrentWarning();
+    void checkInitDone();
+
+public Q_SLOTS:
+    void onSpeedChanged(int speed);
+    void onRpmChanged(int rpm);
+    void onFuelChanged(qreal fuel);
+    void onTemperaturChanged(qreal temperature);
+    void onSystemTypeChanged(InstrumentClusterModule::SystemType systemType);
+    void onCurrentWarningChanged(const Warning &warning);
+
+private:
+    ExampleIVIInstrumentClusterInterface *m_client;
+    QStringList m_fetchList;
+    int m_speed;
+    int m_rpm;
+    qreal m_fuel;
+    qreal m_temperature;
+    InstrumentClusterModule::SystemType m_systemType;
+    Warning m_warning;
+};
+
+#endif // INSTRUMENTCLUSTERBACKEND_H