@Override
  public @NotNull FileDownloader createDownloader(@NotNull List<? extends DownloadableFileDescription> fileDescriptions,
                                                  @NotNull String presentableDownloadName) {
    return new FileDownloaderImpl(fileDescriptions, null, null, presentableDownloadName);
  }
@Override
  public @NotNull FileDownloader createDownloader(@NotNull List<? extends DownloadableFileDescription> fileDescriptions,
                                                  @NotNull String presentableDownloadName)