nor0x

    var _fetchedResultsController: NSFetchedResultsController<Entity>? = nil
    var blockOperations: [BlockOperation] = []

    var fetchedResultController: NSFetchedResultsController<Entity> {
        if _fetchedResultsController != nil {
            return _fetchedResultsController!
        }
        
        let fetchRequest: NSFetchRequest<Entity> = Entity.fetchRequest()
        let managedObjectContext = (UIApplication.shared.delegate as! AppDelegate).managedObjectContext!