private static void updateExistingPluginInfo(
      IdeaPluginDescriptor descr, IdeaPluginDescriptor existing) {
    int state = StringUtil.compareVersionNumbers(descr.getVersion(), existing.getVersion());
    final PluginId pluginId = existing.getPluginId();
    final String idString = pluginId.getIdString();
    final JDOMExternalizableStringList installedPlugins =
        PluginManagerUISettings.getInstance().getInstalledPlugins();
    if (!installedPlugins.contains(idString)
        && !((IdeaPluginDescriptorImpl) existing).isDeleted()) {
      installedPlugins.add(idString);
    }
    final PluginManagerUISettings updateSettings = PluginManagerUISettings.getInstance();
    if (state > 0
        && !PluginManager.isIncompatible(descr)
        && !updatedPlugins.contains(descr.getPluginId())) {
      NewVersions2Plugins.put(pluginId, 1);
      if (!updateSettings.myOutdatedPlugins.contains(idString)) {
        updateSettings.myOutdatedPlugins.add(idString);
      }

      final IdeaPluginDescriptorImpl plugin = (IdeaPluginDescriptorImpl) existing;
      plugin.setDownloadsCount(descr.getDownloads());
      plugin.setVendor(descr.getVendor());
      plugin.setVendorEmail(descr.getVendorEmail());
      plugin.setVendorUrl(descr.getVendorUrl());
      plugin.setUrl(descr.getUrl());

    } else {
      updateSettings.myOutdatedPlugins.remove(idString);
      if (NewVersions2Plugins.remove(pluginId) != null) {
        updatedPlugins.add(pluginId);
      }
    }
  }