@interface WorkoutCore.ExternalProvider : _TtCs12_SwiftObject <WOPersistableObject> {
    void /* unknown type, empty encoding */ sourceName;
    void /* unknown type, empty encoding */ sourceBundleIdentifier;
    void /* unknown type, empty encoding */ sourceImageData;
    void /* unknown type, empty encoding */ syncStartDate;
    void /* unknown type, empty encoding */ uuid;
}

+ (id)deserializeFromPersistence:(id)a0;

- (id)serialize;

@end