presence_api/data/RemoteData/RemoteDatabase/DAO/User.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.Json.Serialization;
using System.Threading.Tasks;

namespace data.RemoteData.RemoteDataBase.DAO
{
    public class UserDao
    {
        public required string FIO { get; set; }
        public required int UserId { get; set; }
        public int GroupId { get; set; }
        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
        public virtual GroupDao? Group { get; set; }
    }
}