System/Library/PrivateFrameworks/SiriTTSService.framework

SiriTTSService.TrialAssetProvider.h

Download SiriTTSService.TrialAssetProvider.h

1. _TtCs12_SwiftObject

@interface SiriTTSService.TrialAssetProvider : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ downloadQueue;
}

@end