public async Task <Player> GetPlayer(Guid playerId)
        {
            try
            {
                var builder = Builders <Player> .Filter;
                var filter  = builder.Eq(e => e.Id, playerId);

                return(await PlayersCollection.Find(filter).FirstOrDefaultAsync());
            }
            catch (Exception e)
            {
                logger.Error(e, "Failed to get player {0}.", playerId);
                return(null);
            }
        }
        public async Task <List <Player> > GetAccountPlayers(ulong steamId, int worldServerIdentifier = 101)
        {
            try
            {
                var builder = Builders <Player> .Filter;
                var filter  = builder.Eq(e => e.SteamId, steamId) & builder.Eq(e => e.WorldServerIdentifier, worldServerIdentifier);

                return(await PlayersCollection.Find(filter).ToListAsync());
            }
            catch (Exception e)
            {
                logger.Error(e, "Failed to get account players for {0}:{1}.", steamId, worldServerIdentifier);
                return(new List <Player>());
            }
        }