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diff --git a/ucbhelper/source/provider/contentinfo.hxx b/ucbhelper/source/provider/contentinfo.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 UCBHELPER_SOURCE_PROVIDER_CONTENTINFO_HXX
+#define UCBHELPER_SOURCE_PROVIDER_CONTENTINFO_HXX
+
+#include <optional>
+#include <com/sun/star/ucb/XCommandInfo.hpp>
+#include <com/sun/star/beans/XPropertySetInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+
+#include <mutex>
+
+namespace com::sun::star::ucb { class XCommandEnvironment; }
+
+namespace ucbhelper {
+
+
+
+
+class ContentImplHelper;
+
+/**
+  * This class provides a propertyset info ( the complete implementation of
+  * the interface XPropertySetInfo ) for an object derived from class
+  * ucb::ContentImplHelper. The implementation takes care about Additional
+  * Core Properties that may have been added to the content.
+  */
+class PropertySetInfo :
+                public cppu::WeakImplHelper<css::beans::XPropertySetInfo>
+{
+    css::uno::Reference< css::ucb::XCommandEnvironment >
+                                m_xEnv;
+    std::optional<css::uno::Sequence< css::beans::Property >>
+                                m_xProps;
+    std::mutex                  m_aMutex;
+    ContentImplHelper*          m_pContent;
+
+private:
+    bool queryProperty( std::u16string_view rName,
+                            css::beans::Property& rProp );
+    const css::uno::Sequence< css::beans::Property > & getPropertiesImpl();
+
+public:
+    PropertySetInfo( const css::uno::Reference< css::ucb::XCommandEnvironment >& rxEnv,
+                     ContentImplHelper* pContent );
+    virtual ~PropertySetInfo() override;
+
+    // XPropertySetInfo
+    virtual css::uno::Sequence< css::beans::Property > SAL_CALL getProperties() override;
+    virtual css::beans::Property SAL_CALL getPropertyByName( const OUString& aName ) override;
+    virtual sal_Bool SAL_CALL hasPropertyByName( const OUString& Name ) override;
+
+    // Non-Interface methods.
+    void reset();
+};
+
+
+
+
+/**
+  * This class provides a command info ( the complete implementation of
+  * the interface XCommandInfo ) for an object derived from class
+  * ucb::ContentImplHelper.
+  */
+class CommandProcessorInfo :
+                public cppu::WeakImplHelper<css::ucb::XCommandInfo>
+{
+    css::uno::Reference< css::ucb::XCommandEnvironment >
+                                m_xEnv;
+    std::optional<css::uno::Sequence< css::ucb::CommandInfo >>
+                                m_xCommands;
+    std::mutex                  m_aMutex;
+    ContentImplHelper*          m_pContent;
+
+private:
+    bool queryCommand( std::u16string_view rName,
+                           css::ucb::CommandInfo& rCommand );
+    bool queryCommand( sal_Int32 nHandle,
+                           css::ucb::CommandInfo& rCommand );
+    const css::uno::Sequence< css::ucb::CommandInfo > & getCommandsImpl();
+
+public:
+    CommandProcessorInfo( const css::uno::Reference< css::ucb::XCommandEnvironment >& rxEnv,
+                         ContentImplHelper* pContent );
+    virtual ~CommandProcessorInfo() override;
+
+    // XCommandInfo
+    virtual css::uno::Sequence< css::ucb::CommandInfo > SAL_CALL getCommands() override;
+    virtual css::ucb::CommandInfo SAL_CALL getCommandInfoByName( const OUString& Name ) override;
+    virtual css::ucb::CommandInfo SAL_CALL getCommandInfoByHandle( sal_Int32 Handle ) override;
+    virtual sal_Bool SAL_CALL hasCommandByName( const OUString& Name ) override;
+    virtual sal_Bool SAL_CALL hasCommandByHandle( sal_Int32 Handle ) override;
+
+    // Non-Interface methods.
+    void reset();
+};
+
+} // namespace ucbhelper
+
+#endif /* ! UCBHELPER_SOURCE_PROVIDER_CONTENTINFO_HXX */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */