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diff --git a/offapi/com/sun/star/ucb/ContentProviderProxy.idl b/offapi/com/sun/star/ucb/ContentProviderProxy.idl
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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 __com_sun_star_ucb_ContentProviderProxy_idl__
+#define __com_sun_star_ucb_ContentProviderProxy_idl__
+
+#include <com/sun/star/ucb/XContentProviderSupplier.idl>
+#include <com/sun/star/ucb/XContentProvider.idl>
+#include <com/sun/star/ucb/XParameterizedContentProvider.idl>
+
+
+module com { module sun { module star { module ucb {
+
+/** is a proxy for a content provider.
+
+    <p>Implementing a content provider proxy can be useful if the creation of
+    the real content provider object shall be deferred for some reason
+    (i.e. performance) until the first method gets called on it. Instead of
+    instantiating and registering the real provider at the UCB, a proxy for
+    the real provider can be created and registered at the UCB.
+
+    @see XContentProviderProxyFactory
+*/
+published service ContentProviderProxy
+{
+    /** The implementation of
+        com::sun::star::uno::XInterface::queryInterface()
+        must instantiate the real provider and return the return value
+        of a queryInterface call at the real provider, except for queries
+        for the interfaces implemented by the proxy itself. So the caller of
+        the queryInterface method at the proxy will get access to the real
+        provider in a completely transparent way.
+     */
+    interface com::sun::star::uno::XInterface;
+
+    /** gives access to the original content provider behind the proxy.
+
+        <p>The implementation will instantiate the real content provider only
+        on demand using its UNO service name. This will load the content
+        providers implementation code (dynamic library), if not already done.
+     */
+    interface com::sun::star::ucb::XContentProviderSupplier;
+
+    /** a content provider implementation that wraps the original provider.
+     */
+    interface com::sun::star::ucb::XContentProvider;
+
+    /** a parameterized content provider implementation that wraps the
+        original provider.
+     */
+    interface com::sun::star::ucb::XParameterizedContentProvider;
+};
+
+
+}; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */