public async Task MarkRead()
{
if (!Messages.Any())
{
return;
}
var ts = (Messages[0].Ts + 1).ToString();
if (ChannelId.StartsWith("D"))
{
await _slackClient.MarkImChannel(ChannelId, ts);
}
else
{
await _slackClient.MarkChannel(ChannelId, ts);
}
}