read xml object
        :param url: contents url
        :param features: markup provider
        :param game: MLBAM Game object
        :param players: MLBAM Players object
        :return: pitchpx.box_score.box_score.BoxScore object

def read_xml(cls, url, features, game, players):
        """
        read xml object
        :param url: contents url
        :param features: markup provider
        :param game: MLBAM Game object
        :param players: MLBAM Players object
        :return: pitchpx.box_score.box_score.BoxScore object
        """
        soup = MlbamUtil.find_xml("".join([url, cls.FILENAME]), features)
        return cls._generate_object(soup, game, players)