class PersistentContainer: NSPersistentContainer{
    override class func defaultDirectoryURL() -> URL{
        return FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.sharingForTodayExtension")!
    }

    override init(name: String, managedObjectModel model: NSManagedObjectModel) {
        super.init(name: name, managedObjectModel: model)
    }
}