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kotlinlang

I have a slight problem with the shutdown hooks of the runtime used by the AppManager event `onAppExit`
So when shutting down I'd like to run logic to check if the current work project is saved. The typical "Do you wanna save your work before quit?".
```private fun initializeEvents() {
    AppManager.setEvents(
        onAppExit = {
            AppShutdownService().shutdown()
        }
    )
}```
This is my code for that. `AppShutdownService` actually calls a JFileChooser window if the user has not saved his/her project. The problem is that this does not mix well with the Runtime.shutdownHook cause it's bringing up a dialog etc.
Long story short - the whole thing does not work out. I am somewhat looking for a hook that runs BEFORE the actual exit occurs (if the user presses the X button)