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++ // Copyright (C) 2024 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #ifndef CALENDARINTERFACE_H
++ #define CALENDARINTERFACE_H
++
++ #include <QCalendar>
++ #include <QObject>
++
++ //![0]
++ class RequestedCalendarInterface
++ {
++ public:
++ RequestedCalendarInterface() = default;
++ virtual QCalendar::SystemId loadCalendar(QAnyStringView requested) = 0;
++ virtual ~RequestedCalendarInterface() = default;
++ };
++ //![0]
++ QT_BEGIN_NAMESPACE
++ //![1]
++ #define RequestedCalendarInterface_iid \
++ "org.qt-project.Qt.Examples.CalendarBackend.RequestedCalendarInterface/1.0"
++ Q_DECLARE_INTERFACE(RequestedCalendarInterface, RequestedCalendarInterface_iid)
++ //![1]
++ QT_END_NAMESPACE
++
++ #endif // CALENDARINTERFACE_H