@class NSSet, NSMutableArray; @interface NSConcreteSetChanges : NSSetChanges { NSSet *_backing; NSMutableArray *_changes; BOOL _backingIsMutable; } - (void)setSet:(id)a0; - (void)minusSet:(id)a0; - (unsigned long long)changeCount; - (id)objectEnumerator; - (id)initWithSet:(id)a0; - (id)init; - (void)intersectSet:(id)a0; - (id)member:(id)a0; - (void)dealloc; - (void)unionSet:(id)a0; - (void)removeAllObjects; - (id)initWithCapacity:(unsigned long long)a0; - (id)initWithObjects:(const id *)a0 count:(unsigned long long)a1; - (void)_willChange; - (void)addObjectsFromArray:(id)a0; - (unsigned long long)count; - (void)addChange:(id)a0; - (id)description; - (unsigned long long)countByEnumeratingWithState:(struct { unsigned long long x0; id *x1; unsigned long long *x2; unsigned long long x3[5]; } *)a0 objects:(id *)a1 count:(unsigned long long)a2; - (id)copyWithZone:(struct _NSZone { } *)a0; - (void)_fault; - (void)enumerateChanges:(unsigned long long)a0 usingBlock:(id /* block */)a1; - (void)enumerateChangesUsingBlock:(id /* block */)a0; - (void)filterObjectsWithTest:(id /* block */)a0; - (void)transformObjectsWithBlock:(id /* block */)a0; @end