VoiceCallStateObserverProtocol
public protocol VoiceCallStateObserverProtocol : AnyObject
The client object may adopt this protocol to be notified on VoiceCall
state change.
To receive notification the client object should be registered at VoiceCall
object as an observer.
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Declaration
Swift
func handleCallStateChanged(_ call: VoiceCall, _ new: VoiceCallState, _ old: VoiceCallState)