def get_alternative(self, identity, test_name):
        raise Exception('Not implemented. Use a sub-class of ResultStorage')
return current error object (to avoid try/except syntax change)
dataset/ETHPy150Open dcrosta/dabble/dabble/__init__.py/ResultStorage.get_alternative--crossover with--dataset/ETHPy150Open twisted/ldaptor/ldaptor/compat.py/exc_err