human
Solve the following python programming problem given the following code:
@ mock.patch ('nova.db.instance_get_by_uuid') 
@ mock.patch ('nova.db.security_group_get_by_instance', return_value = []) 
def test_get_security_group_empty_for_instance(self, mock_sec_group, mock_db_get_ins) : 
    expected = { 
        'security_groups' : [], 
} 
    def return_instance(context, server_id, columns_to_join = None, use_slave = False) : 
        self.assertEqual (server_id, FAKE_UUID1) 
        return return_server_by_uuid (context, server_id) 
mock_db_get_ins.side_effect = return_instance 
    res_dict = self.server_controller.index (self.req, FAKE_UUID1) 
    self.assertEqual (expected, res_dict) 
    mock_sec_group.assert_called_once_with (mock_sec_group.req.environ ['nova.context'], FAKE_UUID1) 

    
    

    Fix the buggy line: mock_sec_group.assert_called_once_with (mock_sec_group.req.environ ['nova.context'], FAKE_UUID1)
assistant
#Here is Python code to fix the buggy line: mock_sec_group.

mock_sec_group.assert_called_once_with (self.req.environ ['nova.context'], FAKE_UUID1)