vCloud/Tools/VidFilesUpgradeTool/Conversation.cs

using System;
using System.Collections.Generic;

namespace VidFilesUpgradeTool
{
    class Conversation : TrackableEntity
    {
        public string Name { get; set; }

        /// <summary>
        /// Indicate if it is a multi-people conversation
        /// </summary>
        public bool Multiple { get; set; }

        public UserInfoWithImage CreateUser { get; set; }

        /// <summary>
        /// The master of this conversation
        /// </summary>
        public UserInfoWithImage Master { get; set; }

        public ICollection<UserInfoWithImage> Members { get; set; }

        public DateTime CloseTime { get; set; }
    }

    class UserInfoWithImage : EntityInfo
    {
        public byte[] SmallHeadImage { get; set; }
        public string NickName { get; set; }
    }

    class FriendShip : Entity
    {
        public virtual UserInfo User { get; set; }

        public virtual UserInfo Friend { get; set; }
    }

    class Remark : TrackableEntity
    {
        public virtual UserInfo SourceUser { get; set; }

        public virtual UserInfo TargetUser { get; set; }

        public string RemarkName { get; set; }
    }
}