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diff --git a/src/qml/qml/qqml.cpp b/src/qml/qml/qqml.cpp
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+++ b/src/qml/qml/qqml.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qqml.h"
+
+#include <QtQml/qqmlprivate.h>
+
+#include <private/qqmlengine_p.h>
+#include <private/qqmlmetatype_p.h>
+#include <private/qqmlmetatypedata_p.h>
+#include <private/qqmltype_p_p.h>
+#include <private/qqmltypemodule_p_p.h>
+
+#include <QtCore/qmutex.h>
+
+QT_BEGIN_NAMESPACE
+
+void qmlClearTypeRegistrations() // Declared in qqml.h
+{
+    QQmlMetaType::clearTypeRegistrations();
+    QQmlEnginePrivate::baseModulesUninitialized = true; //So the engine re-registers its types
+#if QT_CONFIG(library)
+    qmlClearEnginePlugins();
+#endif
+}
+
+//From qqml.h
+bool qmlProtectModule(const char *uri, int majVersion)
+{
+    return QQmlMetaType::protectModule(uri, majVersion);
+}
+
+//From qqml.h
+void qmlRegisterModule(const char *uri, int versionMajor, int versionMinor)
+{
+    QQmlMetaType::registerModule(uri, versionMajor, versionMinor);
+}
+
+//From qqml.h
+int qmlTypeId(const char *uri, int versionMajor, int versionMinor, const char *qmlName)
+{
+    return QQmlMetaType::typeId(uri, versionMajor, versionMinor, qmlName);
+}
+
+/*
+This method is "over generalized" to allow us to (potentially) register more types of things in
+the future without adding exported symbols.
+*/
+int QQmlPrivate::qmlregister(RegistrationType type, void *data)
+{
+    if (type == AutoParentRegistration) {
+        return QQmlMetaType::registerAutoParentFunction(
+                *reinterpret_cast<RegisterAutoParent *>(data));
+    } else if (type == QmlUnitCacheHookRegistration) {
+        return QQmlMetaType::registerUnitCacheHook(
+                *reinterpret_cast<RegisterQmlUnitCacheHook *>(data));
+    }
+
+    QQmlType dtype;
+    if (type == TypeRegistration)
+        dtype = QQmlMetaType::registerType(*reinterpret_cast<RegisterType *>(data));
+    else if (type == InterfaceRegistration)
+        dtype = QQmlMetaType::registerInterface(*reinterpret_cast<RegisterInterface *>(data));
+    else if (type == SingletonRegistration)
+        dtype = QQmlMetaType::registerSingletonType(*reinterpret_cast<RegisterSingletonType *>(data));
+    else if (type == CompositeRegistration)
+        dtype = QQmlMetaType::registerCompositeType(*reinterpret_cast<RegisterCompositeType *>(data));
+    else if (type == CompositeSingletonRegistration)
+        dtype = QQmlMetaType::registerCompositeSingletonType(*reinterpret_cast<RegisterCompositeSingletonType *>(data));
+    else
+        return -1;
+
+    if (!dtype.isValid())
+        return -1;
+
+    QQmlMetaType::registerUndeletableType(dtype);
+    return dtype.index();
+}
+
+QT_END_NAMESPACE