@Override
      public void actionPerformed(@NotNull AnActionEvent event) {
        // apply - for update of editable object
        try {
          getSelectedConfigurable().apply();
        }
        catch (ConfigurationException e) {
          // suppress & wait for OK
        }
        final ProxyGroup selectedGroup = (ProxyGroup)getSelectedObject();
        if (selectedGroup != null) {
          addGroup(selectedGroup);
        }
      }
@Override
      public void actionPerformed(@NotNull AnActionEvent event)