@interface GroupActivities.ReliableBroadcastLink : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ queue;
    void /* unknown type, empty encoding */ heartbeatTimer;
    void /* unknown type, empty encoding */ connection;
    void /* unknown type, empty encoding */ transmissionBuffer;
    void /* unknown type, empty encoding */ encryptionManager;
    void /* unknown type, empty encoding */ participantIdentifierToContextMap;
    void /* unknown type, empty encoding */ participantIdentifier;
    void /* unknown type, empty encoding */ receivedDataHandler;
}

@end