public static void InitProgressNotifier()
        {
            if (progressNotifier != null)
            {
                return;
            }

            progressNotifier = new ProgressNotifier(context, "Receive failed.");
            progressNotifier.SendInitialNotification("Connecting...", "");
        }
        public static void InitProgressNotifier(string title = "Connecting...")
        {
            if (progressNotifier != null)
            {
                progressNotifier.UpdateTitle(title);
                return;
            }

            progressNotifier = new ProgressNotifier(context);
            progressNotifier.SendInitialNotification(title, "");
        }