update Item
abstract fun updateItem(channel: Channel, itemId: String, channelItem: IChannelItem, listener: RainbowListener<String, Unit>? = null)
Updates a ChannelItem object inside a Channel
To create an IChannelItem you should use the ChannelItemBuilder and call the ChannelItemBuilder.build method.
Parameters
channel
Channel The channel where the channel item is updated
channel Item
ChannelItem The channel item object
listener
RainbowListener