public void Conversation_Send_Text_Message()
        {
            AVClient.Initialize("JXyR8vfpeSr8cfaYnob2zYl0-9Nh9j0Va", "Fgq2YlPdnP1KJEoWyF5tk2az");
            var client = new AVIMClient("Tom");

            AVIMConversation conversation = AVIMConversation.CreateWithoutData("573df12679df540060417452", client);

            client.ConnectAsync().ContinueWith(_ =>
            {
                client.RegisterMessage <AVIMTextMessage>((message) =>
                {
                    var textMessage = message as AVIMTextMessage;
                    Trace.WriteLine(textMessage.TextContent);
                });

                client.RegisterMessage <AVIMAudioMessage>((audio) =>
                {
                });

                var text = new AVIMTextMessage("Hi,Jerry");
                conversation.SendMessageAsync(text).ContinueWith(t =>
                {
                    Trace.WriteLine(text.Id);
                }).Wait();
            }).Wait();
        }