def METHOD_NAME(cls):
    print("starting class: {} execution".format(cls.__name__))
    statistic_configs = {
        "count": {},
        "mean": {},
        "sum": {},
        "stddev": {},
        "histogram": {"*": {"bins": 10}, "Age": {"bins": 5, "range": [0, 120]}},
    }
    cls.stats_controller = MockStatisticsController(statistic_configs=statistic_configs, writer_id="")