@property
    def last_played(self):
        """
        Returns:
            datetime: last time this champion was played by this player
        """
        return datetime.datetime.utcfromtimestamp(self.data.lastPlayTime / 1000) if self.data.lastPlayTime else None
dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/type/core/championmastery.py/ChampionMastery.last_played/original