Command to begin PIE?

I’m working on an editor utility widget and I’d like this button to do its thing and then begin PIE, as if the ‘play this level’ button or ‘alt+p’ was pressed. Closest thing I’ve found is a node called ‘Editor Play Simulate’ but obviously that’s not exactly what I’m after. I would think there’d be a python or console command, then I could just use an execute console command node, but I haven’t been able to find anything. Is there any way of getting this to work?