@class NSObject, NSError, NSOperation, NSMutableArray; @protocol OS_dispatch_queue; @interface SSVOperation : NSOperation { NSOperation *_childOperation; NSMutableArray *_childRequests; NSObject<OS_dispatch_queue> *_serialQueue; } @property (nonatomic) BOOL success; @property (copy, nonatomic) NSError *error; - (id)init; - (void)dispatchSync:(id /* block */)a0; - (void)dispatchAsync:(id /* block */)a0; - (void).cxx_destruct; - (void)cancel; - (void)addChildRequest:(id)a0; - (void)removeChildRequest:(id)a0; - (void)runChildOperation:(id)a0; @end