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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "avatarExample.h"
+#include <QQmlEngine>
+#include <QQmlComponent>
+
+void registerTypes()
+{
+//![0]
+ qmlRegisterType<AvatarExample>("Qt.example", 1, 0, "AvatarExample");
+//![0]
+}
+
+void expectOne()
+{
+//![1]
+QQmlComponent component(&engine, "exampleOne.qml");
+QObject *object = component.create();
+// The scarce resource will have been released automatically
+// by this point, after the binding expression was evaluated.
+delete object;
+//![1]
+}
+
+void expectTwo()
+{
+//![2]
+QQmlComponent component(&engine, "exampleTwo.qml");
+QObject *object = component.create();
+// The scarce resource will not have been released automatically
+// after the binding expression was evaluated.
+// Since the scarce resource was not released explicitly prior
+// to the binding expression being evaluated, we get:
+bool expectedResult = (object->property("avatar").isValid() == true);
+delete object;
+//![2]
+}
+
+void expectThree()
+{
+//![3]
+QQmlComponent component(&engine, "exampleThree.qml");
+QObject *object = component.create();
+// The resource was preserved explicitly during evaluation of the
+// JavaScript expression. Thus, during property assignment, the
+// scarce resource was still valid, and so we get:
+bool expectedResult = (object->property("avatar").isValid() == true);
+// The scarce resource will not be released until all references to
+// the resource are released, and the JavaScript garbage collector runs.
+delete object;
+//![3]
+}
+
+void expectFour()
+{
+//![4]
+QQmlComponent component(&engine, "exampleFour.qml");
+QObject *object = component.create();
+// The scarce resource was explicitly preserved by the client during
+// the importAvatar() function, and so the scarce resource
+// remains valid until the explicit call to releaseAvatar(). As such,
+// we get the expected results:
+bool expectedResultOne = (object->property("avatarOne").isValid() == true);
+bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
+// Because the scarce resource referenced by avatarTwo was released explicitly,
+// it will no longer be consuming any system resources (beyond what a normal
+// JS Object would; that small overhead will exist until the JS GC runs, as per
+// any other JavaScript object).
+delete object;
+//![4]
+}
+
+void expectFive()
+{
+//![5]
+QQmlComponent component(&engine, "exampleFive.qml");
+QObject *object = component.create();
+// We have the expected results:
+bool expectedResultOne = (object->property("avatarOne").isValid() == false);
+bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
+// Because although only avatarTwo was explicitly released,
+// avatarOne and avatarTwo were referencing the same
+// scarce resource.
+delete object;
+//![5]
+}