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);
      }
    }
  }
 public ArrayList<IdeaPluginDescriptorImpl> dependent(IdeaPluginDescriptorImpl plugin) {
   ArrayList<IdeaPluginDescriptorImpl> list = new ArrayList<IdeaPluginDescriptorImpl>();
   for (IdeaPluginDescriptor any : getAllPlugins()) {
     if (any instanceof IdeaPluginDescriptorImpl) {
       PluginId[] dep = any.getDependentPluginIds();
       for (PluginId id : dep) {
         if (id == plugin.getPluginId()) {
           list.add((IdeaPluginDescriptorImpl) any);
           break;
         }
       }
     }
   }
   return list;
 }