human
Solve the following python programming problem given the following code:
@ capture_logging (None) 
def test_setup_generates_dataset(self, _logger) : 
    '
        ``write_request_load_scenario`` starts and stops without collapsing.
        ' 
    c = Clock () 
    cluster = self.make_cluster (self.get_fake_flocker_client_instance ()) 
    s = write_request_load_scenario (c, cluster, 5, sample_size = 3) 
    def assert_created(returned_datasets) : 
        self.assertNotEqual (returned_datasets, []) 
d = s.request._create_dataset (self.node1) 
    d.addCallback (s.request._set_dataset_id) 
    self.successResultOf (d) 
    d2 = s.request.control_service.list_datasets_configuration () 
    d2.addCallback (c) 
    s.stop () 

    
    

    Fix the buggy line: d2.addCallback (c)
assistant
#Here is Python code to fix the buggy line: d2.

d2.addCallback (def assert_created()