@class BRCItemID, BRCAccountSession, BRCAppLibrary, NSMutableIndexSet, NSObject, brc_task_tracker; @protocol OS_dispatch_group; @interface BRCTreeEnumerator : NSObject { BRCAccountSession *_session; id /* block */ _handler; BRCItemID *_parentID; BRCAppLibrary *_appLibrary; unsigned long long _rowID; NSMutableIndexSet *_seen; NSMutableIndexSet *_toVisit; brc_task_tracker *_tracker; NSObject<OS_dispatch_group> *_group; id _strongSelf; BOOL _isCancelled; BOOL _isRecursive; } @property (copy, nonatomic) id /* block */ completionHandler; - (id)initWithSession:(id)a0; - (void).cxx_destruct; - (void)cancel; - (BOOL)finishIfCancelled; - (void)_doneWithError:(id)a0; - (BOOL)_visitNewParent; - (unsigned long long)__iterate:(unsigned long long)a0; - (void)_iterate:(unsigned long long)a0; - (void)_scheduleAsync; - (void)enumerateBelow:(id)a0 appLibrary:(id)a1 recursively:(BOOL)a2 handler:(id /* block */)a3; - (id)initWithSession:(id)a0 group:(id)a1; - (id)initWithSession:(id)a0 tracker:(id)a1; @end