@Override
  public void update(@NotNull AnActionEvent e) {
    XDebuggerTree tree = XDebuggerTree.getTree(e);
    boolean enabled = tree != null && !getSelectedNodes(tree, WatchNodeImpl.class).isEmpty();
    if (ActionPlaces.DEBUGGER_TOOLBAR.equals(e.getPlace())) {
      e.getPresentation().setEnabled(enabled);
    }
    else {
      e.getPresentation().setEnabledAndVisible(enabled);
    }
  }
@Override
  public void update(@NotNull AnActionEvent e)