Revision control
++ <?xml version="1.0" ?>
++ <!--
++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ -->
++ <scxml xmlns="http://www.w3.org/2005/07/scxml"
++ version="1.0"
++ name="ColorStepper"
++ initial="red">
++
++ <state id = "red">
++ <transition target="yellow" event="step"/>
++ </state>
++
++ <state id = "yellow">
++ <transition target="green" event="step"/>
++ </state>
++
++ <final id="green"/>
++ </scxml>