code: protected void updateAliasEditorStatus(boolean editing) {
  
          CmsSitemapView.getInstance().getController().getService().updateAliasEditorStatus(
              editing,
              new AsyncCallback<Void>() {
  
                  public void onFailure(Throwable caught) {
  
                      // do nothing
                  }
  
                  public void onSuccess(Void result) {
  
                      // do nothing
                  }
  
              });
      }
docs: Asynchronously updates the alias editor status.<p>
  
  @param editing the status we want to set