IOSurface iOS 11.0 Beta 1 to Beta 2 API Differences

IOSurfaceObjC.h
Modified -[IOSurface setAllAttachments:]
Declaration
From- (void)setAllAttachments:(nonnull NSDictionary *)dict
To- (void)setAllAttachments:(nonnull NSDictionary<NSString *,id> *)dict

Modified -[IOSurface allAttachments]
Declaration
From- (nullable NSDictionary *)allAttachments
To- (nullable NSDictionary<NSString *,id> *)allAttachments