#import #import NS_ASSUME_NONNULL_BEGIN typedef NSDictionary *_Nullable (^TUTDeviceLinkRelayRequest)( TUTMobileStream *stream, int64_t timeoutMillis, NSError **error); typedef void (^TUTDeviceLinkRelayProbeCompletion)(NSError *_Nullable error); FOUNDATION_EXPORT void TUTDeviceLinkProbeRelay( NSDictionary *relay, int64_t timeoutMillis, dispatch_queue_t queue, TUTDeviceLinkRelayRequest request, TUTDeviceLinkRelayProbeCompletion completion); NS_ASSUME_NONNULL_END