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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:FDL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt 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.
-**
-** GNU Free Documentation License Usage
-** Alternatively, this file may be used under the terms of the GNU Free
-** Documentation License version 1.3 as published by the Free Software
-** Foundation and appearing in the file included in the packaging of
-** this file. Please review the following information to ensure
-** the GNU Free Documentation License version 1.3 requirements
-** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*!
-    \example statemachine/trafficlight
-    \title Traffic Light Example
-
-    \brief The Traffic Light example shows how to use \l{The State Machine Framework}
-    to implement the control flow of a traffic light.
-
-    \image trafficlight-example.png
-
-    In this example we write a TrafficLightWidget class. The traffic light has
-    three lights: Red, yellow and green. The traffic light transitions from
-    one light to another (red to yellow to green to yellow to red again) at
-    certain intervals.
-
-    \snippet statemachine/trafficlight/main.cpp 0
-
-    The LightWidget class represents a single light of the traffic light. It
-    provides an \c on property and two slots, turnOn() and turnOff(), to turn
-    the light on and off, respectively. The widget paints itself in the color
-    that's passed to the constructor.
-
-    \snippet statemachine/trafficlight/main.cpp 1
-
-    The TrafficLightWidget class represents the visual part of the traffic
-    light; it's a widget that contains three lights arranged vertically, and
-    provides accessor functions for these.
-
-    \snippet statemachine/trafficlight/main.cpp 2
-
-    The createLightState() function creates a state that turns a light on when
-    the state is entered, and off when the state is exited. The state uses a
-    timer, and as we shall see the timeout is used to transition from one
-    LightState to another. Here is the statechart for the light state:
-
-    \image trafficlight-example1.png
-    \omit
-    \caption This is a caption
-    \endomit
-
-    \snippet statemachine/trafficlight/main.cpp 3
-
-    The TrafficLight class combines the TrafficLightWidget with a state
-    machine.  The state graph has four states: red-to-yellow, yellow-to-green,
-    green-to-yellow and yellow-to-red. The initial state is red-to-yellow;
-    when the state's timer times out, the state machine transitions to
-    yellow-to-green. The same process repeats through the other states.
-    This is what the statechart looks like:
-
-    \image trafficlight-example2.png
-    \omit
-    \caption This is a caption
-    \endomit
-
-    \snippet statemachine/trafficlight/main.cpp 4
-
-    The main() function constructs a TrafficLight and shows it.
-
-*/