void Refresh()
 {
     enableLatest = E.i.showMode != 0;
     MakeDownloadList();
     ReadWebResponseToFile(enableLatest);
     indexChanged = true;
     Helper.s_manifestJsonCache = null;
     RequestStatus.Reset();
 }
        public void DownloadFile(string url, string name, string repoName, string tag, string extention = "")
        {
            if (RequestStatus.networking)
            {
                EditorUtility.DisplayDialog("Warning", "No new downloads can be added during download", "OK");
                return;
            }
            var outputDirectory = $"{E.gitHubCacheDirectory}/{name}/{repoName}/{tag}";

            if (!Directory.Exists(outputDirectory))
            {
                Directory.CreateDirectory(outputDirectory);
            }

            try {
                string fname;
                if (string.IsNullOrEmpty(extention))
                {
                    fname = GetFileName(url);
                }
                else
                {
                    fname = $"{repoName}-{tag}{extention}";
                }
                //System.Threading.Thread.Sleep( 10000 );

                using (WebClient wc = new WebClient()) {
                    RequestStatus.Begin($"Download File {GetFileName( url )}");
                    wc.Headers.Add("User-Agent", "Nothing");
                    wc.DownloadProgressChanged += (sender, e) => {
                        RequestStatus.networkingMsg = $"Download File {GetFileName( url )} {e.ProgressPercentage} %";
                    };
                    wc.DownloadFileCompleted += (sender, e) => {
                        RequestStatus.End();

                        MakeDownloadList();
                        Repaint();
                    };
                    wc.DownloadFileAsync(new Uri(url), outputDirectory + "/" + fname);
                }
            }
            catch (Exception e) {
                Debug.LogException(e);
                RequestStatus.SetError(e);
            }
        }