@Override
  protected JComponent createNorthPanel() {
    final DefaultActionGroup group = new DefaultActionGroup();
    group.add(new AddExternalSuiteAction());
    group.add(new RemoveSuiteAction());
    group.add(new DeleteSuiteAction());
    final ActionToolbar toolbar = ActionManager.getInstance().createActionToolbar("CoverageSuiteChooser", group, true);
    toolbar.setTargetComponent(mySuitesTree);
    return toolbar.getComponent();
  }
@Override
  protected JComponent createNorthPanel()