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diff --git a/src/libs/installer/metadatacache.cpp b/src/libs/installer/metadatacache.cpp
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+++ b/src/libs/installer/metadatacache.cpp
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+/**************************************************************************
+**
+** Copyright (C) 2023 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#include "metadatacache.h"
+
+#define QUOTE_(x) #x
+#define QUOTE(x) QUOTE_(x)
+
+namespace QInstaller {
+
+/*!
+    \inmodule QtInstallerFramework
+    \class QInstaller::MetadataCache
+    \brief The MetadataCache is a class for a checksum based storage of \c Metadata objects on disk.
+
+    MetadataCache manages a cache storage for a set \l{path()}, which contains
+    a subdirectory for each registered \c Metadata item. The cache has a manifest file in
+    its root directory, which lists the version and type of the cache, and all its items.
+    The file is updated automatically when the metadata cache object is destructed, or
+    it can be updated periodically by calling \l{sync()}.
+*/
+
+/*!
+    Constructs a new empty cache. The cache is invalid until set with a
+    path and initialized.
+*/
+MetadataCache::MetadataCache()
+    : GenericDataCache<Metadata>()
+{
+    setType(QLatin1String("Metadata"));
+    setVersion(QLatin1String(QUOTE(IFW_CACHE_FORMAT_VERSION)));
+}
+
+/*!
+    Constructs a cache to \a path. The cache is initialized automatically.
+*/
+MetadataCache::MetadataCache(const QString &path)
+    : GenericDataCache(path, QLatin1String("Metadata"), QLatin1String(QUOTE(IFW_CACHE_FORMAT_VERSION)))
+{
+}
+
+} // namespace QInstaller