[qmltc] compile error with Connections

import QtQuick
import QtQuick.Window

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    id: root

    Connections {
        target: root
        function onTitleChanged() {}
    }
}

/home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp: In member function ‘void Main::QML_beginClass(QQmltcObjectCreationHelper*, bool)’:
/home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp:122:22: error: ‘virtual void QQmlConnections::classBegin()’ is private within this context
  122 |     child->classBegin();
      |     ~~~~~~~~~~~~~~~~~^~
In file included from /home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.h:24,
                 from /home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp:4:
/home/tim/bin/qt-6.5-x/include/QtQml/6.5.1/QtQml/private/qqmlconnections_p.h:63:10: note: declared private here
   63 |     void classBegin() override;
      |          ^~~~~~~~~~
/home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp: In member function ‘void Main::QML_completeComponent(QQmltcObjectCreationHelper*, bool)’:
/home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp:141:29: error: ‘virtual void QQmlConnections::componentComplete()’ is private within this context
  141 |     child->componentComplete();
      |     ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from /home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.h:24,
                 from /home/tim/build/build-qml_scratch2-clang_15-Debug/.qmltc/appqml_scratch2/main.cpp:4:
/home/tim/bin/qt-6.5-x/include/QtQml/6.5.1/QtQml/private/qqmlconnections_p.h:64:10: note: declared private here
   64 |     void componentComplete() override;
      |          ^~~~~~~~~~~~~~~~~
ninja: build stopped: subcommand failed.

    auto child = creator->get<Main_Connections>(1);
    child->QML_beginClass(creator);
    static_assert(std::is_base_of<QQmlParserStatus, Main_Connections>::value);
    child->classBegin();