public protocol GroupChannelDelegate {
func onUpdated(channel: GroupChannel)
func onDeleted(channel: GroupChannel)
func onJoined(channel: GroupChannel, user: BaseUser)
func onLeft(channel: GroupChannel, user: BaseUser)
func onManagerCreated(channel: GroupChannel, user: BaseUser)
func onManagerDeleted(channel: GroupChannel, user: BaseUser)
func onFrozen(channel: GroupChannel)
func onUnfrozen(channel: GroupChannel)
func onUserBanned(channel: GroupChannel, user: BaseUser, banInfo: BanInfo)
func onUserUnbanned(channel: GroupChannel, user: BaseUser)
func onMessageCreated(channel: GroupChannel, message: BaseMessage)
func onMessageUpdated(channel: GroupChannel, message: BaseMessage)
func onMessageDeleted(channel: GroupChannel, message: BaseMessage)
func onMessageRead(channel: GroupChannel)
func onMessageDelivered(channel: GroupChannel)
}