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diff --git a/src/gui/itemviews/qtreewidgetitemiterator_p.h b/src/gui/itemviews/qtreewidgetitemiterator_p.h
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--- a/src/gui/itemviews/qtreewidgetitemiterator_p.h
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtGui module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights.  These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QTREEWIDGETITEMITERATOR_P_H
-#define QTREEWIDGETITEMITERATOR_P_H
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists purely as an
-// implementation detail.  This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include <QtCore/qstack.h>
-
-#ifndef QT_NO_TREEWIDGET
-#include "qtreewidgetitemiterator.h"
-
-QT_BEGIN_NAMESPACE
-
-class QTreeModel;
-class QTreeWidgetItem;
-
-class QTreeWidgetItemIteratorPrivate {
-    Q_DECLARE_PUBLIC(QTreeWidgetItemIterator)
-public:
-    QTreeWidgetItemIteratorPrivate(QTreeWidgetItemIterator *q, QTreeModel *model)
-        : m_currentIndex(0), m_model(model), q_ptr(q)
-    {
-
-    }
-
-    QTreeWidgetItemIteratorPrivate(const QTreeWidgetItemIteratorPrivate& other)
-        : m_currentIndex(other.m_currentIndex), m_model(other.m_model),
-          m_parentIndex(other.m_parentIndex), q_ptr(other.q_ptr)
-    {
-
-    }
-
-    QTreeWidgetItemIteratorPrivate &operator=(const QTreeWidgetItemIteratorPrivate& other)
-    {
-        m_currentIndex = other.m_currentIndex;
-        m_parentIndex = other.m_parentIndex;
-        m_model = other.m_model;
-        return (*this);
-    }
-
-    ~QTreeWidgetItemIteratorPrivate()
-    {
-    }
-
-    QTreeWidgetItem* nextSibling(const QTreeWidgetItem* item) const;
-    void ensureValidIterator(const QTreeWidgetItem *itemToBeRemoved);
-
-    QTreeWidgetItem *next(const QTreeWidgetItem *current);
-    QTreeWidgetItem *previous(const QTreeWidgetItem *current);
-private:
-    int             m_currentIndex;
-    QTreeModel     *m_model;        // This iterator class should not have ownership of the model.
-    QStack<int>     m_parentIndex;
-    QTreeWidgetItemIterator *q_ptr;
-};
-
-QT_END_NAMESPACE
-
-#endif // QT_NO_TREEWIDGET
-
-#endif //QTREEWIDGETITEMITERATOR_P_H