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diff --git a/src/qdoc/proxynode.cpp b/src/qdoc/proxynode.cpp
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--- a/src/qdoc/proxynode.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2020 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the tools applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:GPL-EXCEPT$
-** 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 General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3 as published by the Free Software
-** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "proxynode.h"
-
-#include "tree.h"
-
-QT_BEGIN_NAMESPACE
-
-/*!
-  \class ProxyNode
-  \brief A class for representing an Aggregate that is documented in a different module.
-
-  This class is used to represent an Aggregate (usually a class)
-  that is located and documented in a different module. In the
-  current module, a ProxyNode holds child nodes that are related
-  to the class in the other module.
-
-  For example, class QHash is located and documented in QtCore.
-  There are many global functions named qHash() in QtCore that
-  are all related to class QHash using the \c relates command.
-  There are also a few qHash() function in QtNetwork that are
-  related to QHash. These functions must be documented when the
-  documentation for QtNetwork is generated, but the reference
-  page for QHash must link to that documentation in its related
-  nonmembers list.
-
-  The ProxyNode allows qdoc to construct links to the related
-  functions (or other things?) in QtNetwork from the reference
-  page in QtCore.
- */
-
-/*!
-  Constructs the ProxyNode, which at this point looks like any
-  other Aggregate, and then finds the Tree this node is in and
-  appends this node to that Tree's proxy list so it will be
-  easy to find later.
- */
-ProxyNode::ProxyNode(Aggregate *parent, const QString &name) : Aggregate(Node::Proxy, parent, name)
-{
-    tree()->appendProxy(this);
-}
-
-/*! \fn bool ProxyNode::docMustBeGenerated() const
-  Returns true because a ProxyNode always means some documentation
-  must be generated.
-*/
-
-/*! \fn bool ProxyNode::isRelatableType() const
-  Returns true because the ProxyNode exists so that elements
-  can be related to it with the \c {\\relates} command.
-*/
-
-QT_END_NAMESPACE