@Override
  public void setChecked(@NotNull PluginDownloader downloader, boolean checked) {
    PluginId pluginId = downloader.getId();
    if (checked) {
      mySkippedPlugins.remove(pluginId);
    }
    else {
      mySkippedPlugins.add(pluginId);
    }
  }
@Override
  public void setChecked(@NotNull PluginDownloader downloader, boolean checked)