OpenTween.TweenMain.RefreshTasktrayIcon C# (CSharp) Method

        private async Task RefreshTasktrayIcon()
        {
            if (_colorize)
                await this.Colorize();

            if (!TimerRefreshIcon.Enabled) return;
            //Static usCheckCnt As int = 0

            //Static iconDlListTopItem As ListViewItem = null

            //if (((ListView)ListTab.SelectedTab.Tag).TopItem == iconDlListTopItem)
            //    ((ImageDictionary)this.TIconDic).PauseGetImage = false;
            //else
            //    ((ImageDictionary)this.TIconDic).PauseGetImage = true;
            //
            //iconDlListTopItem = ((ListView)ListTab.SelectedTab.Tag).TopItem;

            iconCnt += 1;
            blinkCnt += 1;
            //usCheckCnt += 1;

            //if (usCheckCnt > 300)    //1min
            //{
            //    usCheckCnt = 0;
            //    if (!this.IsReceivedUserStream)
            //    {
            //        TraceOut("ReconnectUserStream");
            //        tw.ReconnectUserStream();
            //    }
            //}

            var busy = this.workerSemaphore.CurrentCount != MAX_WORKER_THREADS;

            if (iconCnt >= this.NIconRefresh.Length)
            {
                iconCnt = 0;
            }
            if (blinkCnt > 10)
            {
                blinkCnt = 0;
                //未保存の変更を保存
                SaveConfigsAll(true);
            }

            if (busy)
            {
                NotifyIcon1.Icon = NIconRefresh[iconCnt];
                idle = false;
                _myStatusError = false;
                return;
            }

            TabModel tb = _statuses.GetTabByType(MyCommon.TabUsageType.Mentions);
            if (this._cfgCommon.ReplyIconState != MyCommon.REPLY_ICONSTATE.None && tb != null && tb.UnreadCount > 0)
            {
                if (blinkCnt > 0) return;
                blink = !blink;
                if (blink || this._cfgCommon.ReplyIconState == MyCommon.REPLY_ICONSTATE.StaticIcon)
                {
                    NotifyIcon1.Icon = ReplyIcon;
                }
                else
                {
                    NotifyIcon1.Icon = ReplyIconBlink;
                }
                idle = false;
                return;
            }

            if (idle) return;
            idle = true;
            //優先度：エラー→オフライン→アイドル
            //エラーは更新アイコンでクリアされる
            if (_myStatusError)
            {
                NotifyIcon1.Icon = NIconAtRed;
                return;
            }
            if (_myStatusOnline)
            {
                NotifyIcon1.Icon = NIconAt;
            }
            else
            {
                NotifyIcon1.Icon = NIconAtSmoke;
            }
        }