Do macOS apps support custom notification sounds like iOS apps?
I'm sending a push notification with a custom sound to a macOS app but all I get is the system sound.
I tried caf, aiff, and m4a files and I know the caf is good because it works in an old iOS app I wrote. The push payload looks like:
{"aps":{"alert":"test", "sound":"PushSound.caf"}}
The only difference I see compared to iOS is that the sound is stored in Contents/Resources automatically by Xcode in the macOS app rather than at the top level of the bundle in iOS apps. I tried partial paths in the sound name but they didn't help.
Suggestions?