实体

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;

namespace HelloWorldApi.Entities;

public class Deck
{
    [BsonId]
    [BsonRepresentation(BsonType.ObjectId)]
    public string Id { get; set; } = ObjectId.GenerateNewId().ToString();

    public string Name { get; set; } = "";

    public List<string> Cards { get; set; } = new();
}

public class Credentials
{
    public string Username { get; set; } = "";
    public string Password { get; set; } = "";
}

[BsonIgnoreExtraElements]    
public class Account {
    public string Status = "";
    public string Type = "";
    public Credentials Credentials = new();
}

[BsonIgnoreExtraElements]
public class Player
{
    [BsonId]
    [BsonRepresentation(BsonType.ObjectId)]
    public string Id { get; set; } = "";
    
    public Account Account = new ();

    public List<string> Roles { get; set; } = new ();

    public List<Deck> Decks { get; set; } = new ();

    public List<string> Cards { get; set; } = new ();
}

该服务：

public List<Player> GetUsers()
{
  return _players.FindSync<Player>(FilterDefinition<Player>.Empty).ToList();
}

具体来说，我希望包括帐户、凭据、用户名，但不包括密码。