def stopDB(self):
        pass
Swap out the evaluator. returns the old one, so it can be put back later
dataset/ETHPy150Open twisted/twisted/twisted/test/test_adbapi.py/DBTestConnector.stopDB--crossover with--dataset/ETHPy150Open ufora/ufora/ufora/FORA/python/Evaluator/Evaluator.py/swapEvaluator