@interface SiriTTSService.DeviceSynthesisAction : SiriTTSService.Buffer {
void /* unknown type, empty encoding */ asyncContext;
void /* unknown type, empty encoding */ queue;
void /* unknown type, empty encoding */ notificationCenter;
void /* unknown type, empty encoding */ observers;
void /* unknown type, empty encoding */ internalSettings;
void /* unknown type, empty encoding */ synthesisConfig;
void /* unknown type, empty encoding */ _isCancelled;
void /* unknown type, empty encoding */ _ongoingEngine;
}
@end