System/Library/PrivateFrameworks/PhotoLibraryServices.framework
PLMergePolicy.h
@interface PLMergePolicy : NSMergePolicy
@property (readonly, nonatomic) BOOL isResolvingConflicts;
- (BOOL)resolveOptimisticLockingVersionConflicts:(id)a0 error:(id *)a1;
- (BOOL)resolveConflicts:(id)a0 error:(id *)a1;
@end