@cassiopeia.type.core.common.immutablemethod
    def champion_masteries(self):
        return cassiopeia.riotapi.get_champion_masteries(self)
Returns True if a and b are members of the same set.
dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/summoner.py/Summoner.champion_masteries--crossover with--dataset/ETHPy150Open tanghaibao/jcvi/utils/grouper.py/Grouper.joined