Optional ackcn 自己已读过的最近一条消息的时间
用于判别自己已读到哪条消息了
en The time when you read the last message
Used to determine which message you have read
@Multi_Lang_Tag
cn sessionId
例如 p2p-cs1、team-113879441
en sessionId
Example: p2p-cs1, team-113879441
Optional last@Multi_Lang_Tag
cn 上一条消息.
若 lastMsg 为 undefined ，那么代表这个会话从没有过消息，导致会话不完整. sdk 将过滤掉此会话, 不会回调给上层的开发者
若 lastMsg 为 null，lastMsg 为 null 则可能是撤回消息，也可能是清除了这个会话的历史消息
en Previous message
If lastMsg is undefined, it may have never received or sent messages and the conversation is incomplete. The sdk will filter out this session and will not call back to the upper developers
If lastMsg is null, the message is recalled or the historical messages of this conversation are cleared.
Optional msg@Multi_Lang_Tag
cn 聊天对象所读过的最近一条消息的时间
p2p 会话特有，与 msg.time 对比就能得知某条消息是否被对方已读
被 API MsgServiceInterface.sendMsgReceipt | sendMsgReceipt 和 MsgServiceInterface.sendTeamMsgReceipt | sendTeamMsgReceipt 所更新
en Time when the last message read by the user
p2p chat specific properties，can compare it with msg.time to know whether a message has been read by the other party.
@Multi_Lang_Tag
cn 会话场景
p2p 单聊
team 群组
superTeam 超大群
en Conversation scene
p2p: one-to-one chat
team : group chat
superTeam : supergroup chat
Optional stick@Multi_Lang_Tag
cn 云端置顶会话信息。若开通了云端置顶会话功能，且这个会话的确被设置为置顶会话，此对象存在。
en The information about a pinned session. If the pinning session feature is enabled, and the session is pinned
@Multi_Lang_Tag
cn 聊天对象,
若 scene 为 p2p 单聊，则 to 为聊天对象的账号
若 scene 为 team 或者 superTeam，则 to 为 群ID
en Chat object,
If the scene is one-to-one chat, the “to” field represents the account of the person that the user chats with.
If the scene is group chat or supergroup chat, the “to” field represents the group ID.
@Multi_Lang_Tag
cn 未读数
en Unread count
Optional unread@Multi_Lang_Tag
cn 自己还没读过的此会话消息。此字段不希望开发者处理。
en The conversation message that you haven't read yet
@Multi_Lang_Tag
cn 更新时间
en Update time
Generated using TypeDoc
@Multi_Lang_Tag