@Override
    public void actionPerformed(@NotNull final AnActionEvent e) {
      final Set<PsiFile> selectedScope = getSelectedScope(myLeftTree);
      exclude(selectedScope);
      myExcluded.addAll(selectedScope);
      final TreePath[] paths = myLeftTree.getSelectionPaths();
      assert paths != null;
      for (TreePath path : paths) {
        TreeUtil.removeLastPathComponent(myLeftTree, path);
      }
    }
@Override
    public void actionPerformed(@NotNull final AnActionEvent e)