updateChannelUserMessagesMember
abstract suspend fun updateChannelUserMessagesMember(cid: String, userId: String, member: MemberInfo?)
Replaces the Message.member snapshot on every message a given user authored in a given channel.
Only that field is written, so a message being modified elsewhere at the same time is not overwritten.
Parameters
cid
The channel ID to filter messages.
userId
The user ID to filter messages.
member
The member snapshot to store, or null to clear it.