https://doc.qt.io/qt-6/qqmlengine-obsolete.html
Obsolete Members for QQmlEngine | Qt Qml | Qt 6.11.1
The QQmlEngine class provides an environment for instantiating QML components.
obsoletemembersqtqml
https://forum.qt.io/topic/38373/is-the-memory-leak-in-qqmlengine-clearcomponentcache-fixed
Is the memory leak in QQmlEngine::clearComponentCache() fixed ? | Qt Forum
Feb 27, 2014 - Is the memory leak in QQmlEngine::clearComponentCache() fixed ?
the memoryleakfixedqtforum