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diff --git a/offapi/com/sun/star/document/XExtendedFilterDetection.idl b/offapi/com/sun/star/document/XExtendedFilterDetection.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_document_XExtendedFilterDetection_idl__
+#define __com_sun_star_document_XExtendedFilterDetection_idl__
+
+#include <com/sun/star/uno/XInterface.idl>
+#include <com/sun/star/beans/PropertyValue.idl>
+
+
+module com { module sun { module star { module document {
+
+/** provides a "deep" filter detection
+
+    <p>
+    A "deep" filter detection means looking into the document stream to detect
+    the format of it. Services of type ExtendedTypeDetection must support this
+    interface to be called from generic load mechanism of the office for that.
+    </p>
+
+    @see DetectService
+    @see TypeDetection
+    @see FilterFactory
+ */
+published interface XExtendedFilterDetection: com::sun::star::uno::XInterface
+{
+    /** controls agreement of a "flat" TypeDetection
+        with given URL or arguments
+
+        <p>
+        Registered services in configuration, which support this interface for different mime types,
+        will be called automatically to look into the document stream and decide which format it represent.
+        Add the collected information about detected documents in given MediaDescriptor
+        <var>Descriptor</var>. The decision must be returned as any valid type name (which specifies
+        the detected format) or an empty value for unknown formats.
+        </p>
+
+        @param Descriptor
+            represent a MediaDescriptor which can be used to get/set information
+            about the detected document
+
+        @returns
+            an internal type name if format was detected successfully
+            <br>
+            or an empty value for an unknown document format.
+     */
+    string detect( [inout] sequence< com::sun::star::beans::PropertyValue > Descriptor );
+
+}; }; }; }; };
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */