code: public void addMultiAction(CmsListMultiAction multiAction) {
  
          multiAction.setListId(getListId());
          m_multiActions.addIdentifiableObject(multiAction.getId(), multiAction);
      }
docs: Adds an action applicable to more than one list item at once.<p>
  
  It will be executed with a list of <code>{@link CmsListItem}</code>s.<p>
  
  @param multiAction the action