private void assertTabCount(Content content) {
    //        PluginSettingsBean bean = (PluginSettingsBean)
    // SharedObjectPool.getUserData(SharedConstants.PLUGIN_SETTINGS);
    PluginSettingsBean bean = PluginKeys.PLUGIN_SETTINGS.getData();

    if (bean == null) {
      bean = new PluginSettingsBean();
    }

    int max = bean.getNumberOfTabs();

    if (max <= getTabComponent(content).getTabCount()) {
      // remove the oldest tab
      JTabbedPane tabbedPane = getTabComponent(content);
      long lastMin = Long.MAX_VALUE;
      int index = 0;
      for (int i = 0; i < tabbedPane.getTabCount(); i++) {
        JComponent tab = (JComponent) tabbedPane.getTabComponentAt(i);
        Long time = (Long) tab.getClientProperty(CREATE_TIME);
        if (time != null && lastMin < time) {
          lastMin = time;
          index = i;
        }
      }

      tabbedPane.remove(index);
    }
  }
  @Nullable
  private Editor validateCurrentEditor() {
    Component focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
    if (focusOwner instanceof JComponent) {
      final JComponent jComponent = (JComponent) focusOwner;
      if (jComponent.getClientProperty("AuxEditorComponent") != null)
        return null; // Hack for EditorSearchComponent
    }

    return myEditor;
  }