def _today(self):
        return datetime.datetime.today()
Set `a` can safe convert to `b` and `b` can unsafe convert to `a`
dataset/ETHPy150Open ntoll/workflow/workflow/models.py/State._today--crossover with--dataset/ETHPy150Open numba/numba/numba/typeconv/typeconv.py/TypeCastingRules.safe_unsafe