Add ToggleSwitch to possible Elements in NavigationBar (Top)?

[DevTKSS]

Did recognize the NavigationBar is not enabling me to add a ToggleSwitch to its PrimaryCommands. Could that maybe be added? Dont know if this is correct repo if not please move.

Since xaml is enabling nesting other controls into content I already tryed to take a simple AppBarButton (or was it AppButton? The normal one is meant.) but as result I actually got a minimalistic ToggleSwitch, like 1/4 of the AppButton😅 so if this Control could be enabled to be added that would be nice :)