docs: protected void openWarningDialog() {
  
          CmsDeleteWarningDialog dialog = new CmsDeleteWarningDialog(m_editableData.getSitePath());
          Command callback = new Command() {
  
              /**
               * @see com.google.gwt.user.client.Command#execute()
               */
              public void execute() {
  
                  deleteElement();
              }
          };
          dialog.loadAndShow(callback);
      }