code: public ActionResult getActionResult(String actionId) {
          if (actionId == null) {
              return null;
          }
          for (ListIterator<ContentResult> iterator = listIterator(size()); iterator.hasPrevious();) {
              ContentResult contentResult = iterator.previous();
              ActionResult actionResult = contentResult.getActionResult(actionId);
              if (actionResult != null) {
                  return actionResult;
              }
          }
          return null;
      }
docs: Returns the result of the action as an {@code ActionResult}.
  
  @param actionId the action id
  @return the result of the action