@cassiopeia.type.core.common.immutablemethod
    def champion_mastery(self, champion):
        return cassiopeia.riotapi.get_champion_mastery(self, champion)
Like :meth:`Flask.after_request` but for a module.  Such a function
dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/summoner.py/Summoner.champion_mastery--crossover with--dataset/ETHPy150Open hhstore/flask-annotated/flask-0.5/flask/module.py/Module.after_app_request