Asynchronous Data Fetching Example

[managedObjectContext dct_asynchronousObjectsForEntityName:@"DCTCDGroup"
                                                 predicate:predicate
                                           sortDescriptors:sortDescriptors
                                             callbackBlock:^(NSArray *fetchedObjects, NSError *error) {
		
    NSLog(@"sorted fetchedObjects: %@", fetchedObjects);
    NSLog(@"error: %@", error);
}];