public override void OnBroadcastMessageReceived (SendBirdModel.BroadcastMessage message)
	{
		messages.Add (message);
	}
	public override void OnSystemMessageReceived (SendBirdModel.SystemMessage message)
	{
		messages.Add (message);
	}
	public override void OnConnect (SendBirdModel.Channel channel)
	{
		Debug.Log ("Connect to " + channel.GetName ());
		string channelName = "#" +  channel.GetUrlWithoutAppPrefix();
		string channelUrl = channel.GetUrl ();
	}
	public override void OnBroadcastMessageReceived (SendBirdModel.BroadcastMessage message)
	{
		txtContent.text = txtContent.text + (SystemMessageRichText(message.GetMessage()) + "\n");
	}
	public override void OnMessageReceived (SendBirdModel.Message message)
	{
		txtContent.text = txtContent.text + (MessageRichText(message) + "\n");
	}
	public override void OnConnect (SendBirdModel.Channel channel)
	{
		Debug.Log ("Connect to " + channel.GetName ());
		txtTitle.text = "#" +  channel.GetUrlWithoutAppPrefix();
	}