docs: public static CmsElementOptionBar createOptionBarForElement(
          CmsContainerPageElementPanel element,
          CmsDNDHandler dndHandler,
          A_CmsToolbarOptionButton... buttons) {
  
          CmsElementOptionBar optionBar = new CmsElementOptionBar(element);
          if (buttons != null) {
              // add buttons, last as first
              for (int i = buttons.length - 1; i >= 0; i--) {
                  CmsElementOptionButton option = buttons[i].createOptionForElement(element);
                  if (option == null) {
                      continue;
                  }
                  optionBar.add(option);
                  if (buttons[i] instanceof CmsToolbarMoveButton) {
                      option.addMouseDownHandler(dndHandler);
                  }
              }
          }
          return optionBar;
      }