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diff --git a/configmgr/source/modifications.hxx b/configmgr/source/modifications.hxx
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+++ b/configmgr/source/modifications.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_CONFIGMGR_SOURCE_MODIFICATIONS_HXX
+#define INCLUDED_CONFIGMGR_SOURCE_MODIFICATIONS_HXX
+
+#include <sal/config.h>
+
+#include <vector>
+
+#include <rtl/ustring.hxx>
+
+#include <boost/unordered_map.hpp>
+#include <config_dconf.h>
+
+namespace configmgr {
+
+class Modifications {
+public:
+    struct Node {
+        typedef boost::unordered_map<OUString, Node, OUStringHash> Children;
+
+        Children children;
+    };
+
+    Modifications();
+
+    ~Modifications();
+
+    void add(std::vector<OUString> const & path);
+
+    void remove(std::vector<OUString> const & path);
+
+#if ENABLE_DCONF
+    void clear() { root_.children.clear(); }
+#endif
+
+    bool empty() const { return root_.children.empty(); }
+
+    Node const & getRoot() const { return root_;}
+
+private:
+    Modifications(const Modifications&) = delete;
+    Modifications& operator=(const Modifications&) = delete;
+
+    Node root_;
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */