public IteratingPlayerContainer(Game game, int numberOfPlayers) {
      this.game = game;
      List<String> playerIds = Lists.newArrayList();
      for (int i = 0; i < numberOfPlayers; i++) {
        String playerId = String.valueOf(42 + i);
        playerIds.add(playerId);
        playersInfo.add(ImmutableMap.<String, Object>of(PLAYER_ID, playerId));
      }
      this.playerIds = ImmutableList.copyOf(playerIds);
    }