docs: public final void notifyFooterItemInserted(int position) {
          int newHeaderItemCount = getHeaderItemCount();
          int newContentItemCount = getContentItemCount();
          int newFooterItemCount = getFooterItemCount();
  //        if (position < 0 || position >= newFooterItemCount) {
  //            throw new IndexOutOfBoundsException("The given position " + position
  //                    + " is not within the position bounds for footer items [0 - "
  //                    + (newFooterItemCount - 1) + "].");
  //        }
          notifyItemInserted(position + newHeaderItemCount + newContentItemCount);
      }