<s> class BaseAggregator ( object ) : <EOL> def __init__ ( self , test_definition ) : <EOL> self . test_definition = test_definition <EOL> def test_summary ( self , records ) : <EOL> pass <EOL> def concurrency_summary ( self , records ) : <EOL> pass <EOL> def record_summary ( self , record ) : <EOL> pass </s>
