code: public static void setTag(EfficientCacheView cacheView, int viewId, Object tag) {
          View view = cacheView.findViewByIdEfficient(viewId);
          if (view != null) {
              view.setTag(tag);
          }
      }
docs: Equivalent to calling View.setTag
  
  @param cacheView The cache of views to get the view from
  @param viewId    The id of the view whose tag should change
  @param tag       An Object to tag the view with