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diff --git a/chart2/source/inc/MediaDescriptorHelper.hxx b/chart2/source/inc/MediaDescriptorHelper.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 .
+ */
+#pragma once
+
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include "charttoolsdllapi.hxx"
+
+namespace com::sun::star::beans { struct PropertyValue; }
+namespace com::sun::star::embed { class XStorage; }
+namespace com::sun::star::io { class XInputStream; }
+namespace com::sun::star::io { class XOutputStream; }
+namespace com::sun::star::io { class XStream; }
+
+/*
+* This class helps to read and write the properties mentioned in the service description
+* com.sun.star.document.MediaDescriptor from and to a sequence of PropertyValues.
+* Properties that are not mentioned in the service description
+* are stored in the member AdditionalProperties.
+*
+* As an additional feature this helper class can generate a reduced sequence of PropertyValues
+* that does not contain properties which are known to be only view relevant. This
+* reduced sequence than might be attached to a model directly.
+*/
+
+namespace apphelper
+{
+
+class OOO_DLLPUBLIC_CHARTTOOLS MediaDescriptorHelper final
+{
+public:
+    MediaDescriptorHelper( const css::uno::Sequence< css::beans::PropertyValue > & rMediaDescriptor );
+
+    const css::uno::Sequence< css::beans::PropertyValue >& getReducedForModel() const { return m_aModelProperties;}
+
+    //all properties given in the constructor are stored in the following three sequences
+
+    //properties which should be given to a model are additionally stored in this sequence (not documented properties and deprecated properties are not included!)
+    css::uno::Sequence< css::beans::PropertyValue >
+                        m_aModelProperties; //these are properties which are not described in service com.sun.star.document.MediaDescriptor
+
+    OUString            FilterName; //internal filter name.
+    bool                ISSET_FilterName;
+
+    OUString            HierarchicalDocumentName;
+
+    css::uno::Reference< css::io::XOutputStream >
+                        OutputStream; //a stream to receive the document data for saving
+    bool                ISSET_OutputStream;
+    css::uno::Reference< css::io::XInputStream >
+                        InputStream; //content of document.
+    bool                ISSET_InputStream;
+
+    bool                ReadOnly; //open document readonly.
+
+    OUString            URL;// FileName, URL of the document.
+    bool                ISSET_URL;
+
+    // new framework objects
+    css::uno::Reference< css::embed::XStorage >
+                        Storage;
+    bool                ISSET_Storage;
+    css::uno::Reference< css::io::XStream >
+                        Stream;
+    bool                ISSET_Stream;
+
+private:
+    SAL_DLLPRIVATE void impl_init();
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */