[Interest] controlling QML singleton lifetime from C++

[Stefan Seefeld]

Hello,

as per the Qt documentation (
https://doc.qt.io/qt-6/qqmlengine.html#QML_SINGLETON), I'm using a static
`create()` function to inject an existing C++ object as singleton into the
QML runtime.

I'd like to be able to replace that singleton instance over the course of
the application's workflow, but I couldn't find any indication in the docs
for whether that's allowed, or whether that might lead to undefined
behaviour.

Any idea ?

Thanks,

-- 

      ...ich hab' noch einen Koffer in Berlin...
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