docs: def _read_objects(cls, soup, game):
          """
          read objects
          :param soup: Beautifulsoup object
          :param game: MLBAM Game object
          :return: pitchpx.game.players.Players object
          """
          players = Players()
          players.game = Players.Game()
          # game data
          players.game.venue = soup.game['venue']
          players.game.date = soup.game['date']
          # players & team data
          for team in soup.find_all('team'):
              team_object = cls._get_team(team)
              if team['type'] == Game.TEAM_TYPE_HOME:
                  # team data(home)
                  players.home_team = team_object
              elif team['type'] == Game.TEAM_TYPE_AWAY:
                  # team data(away)
                  players.away_team = team_object
              # player data
              players.rosters.update(
                      {player['id']: cls.Player(player, game.retro_game_id) for player in team.find_all('player')}
              )
              # coach data
              players.coaches.update(
                      {coach['id']: cls.Coach(coach, game.retro_game_id, team_object) for coach in team.find_all('coach')}
              )
          # umpire data
          umpires = soup.find('umpires')
          players.umpires.update(
                  {umpire['id']: cls.Umpire(umpire, game.retro_game_id) for umpire in umpires.find_all('umpire')}
          )
          return players