def __call__(self, awsAccessKey='', awsSecretKey=''):
        raise NotImplementedError()
Helper function to return the traceback as a string
dataset/ETHPy150Open ufora/ufora/ufora/distributed/S3/S3Interface.py/S3InterfaceFactory.__call__--crossover with--dataset/ETHPy150Open IanLewis/kay/kay/app.py/KayApp._get_traceback