CoreData macOS 10.13 Beta 5 to Beta 6 API Differences

NSManagedObjectModel.h
Declaration
From- (nonnull instancetype)initWithContentsOfURL:(nonnull NSURL *)url
To- (nullable instancetype)initWithContentsOfURL:(nonnull NSURL *)url

NSMappingModel.h
Declaration
From- (nonnull instancetype)initWithContentsOfURL:(nullable NSURL *)url
To- (nullable instancetype)initWithContentsOfURL:(nullable NSURL *)url

NSPersistentContainer.h
Declaration
From+ (nullable instancetype)persistentContainerWithName:(nonnull NSString *)name
To+ (nonnull instancetype)persistentContainerWithName:(nonnull NSString *)name

Declaration
From+ (nullable instancetype)persistentContainerWithName:(nonnull NSString *)name managedObjectModel:(nonnull NSManagedObjectModel *)model
To+ (nonnull instancetype)persistentContainerWithName:(nonnull NSString *)name managedObjectModel:(nonnull NSManagedObjectModel *)model