This specific error is caused by SE-0103 Make non-escaping closures the default. The closure parameter to
handle(startAudioCall:completion:)needs to be marked with
func handle(startAudioCall startAudioCallIntent: INStartAudioCallIntent, completion: @escaping (INStartAudioCallIntentResponse) -> Void) …
However, once you fix this you will discover other problems. It’s clear that the sample hasn’t been updated to account for the final Swift 3 changes. Please file a bug against it, and then post your bug number, just for the record.
If you have trouble fixing the other problems post back and we’ll take things from there.
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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"