docs: @UiThread
      public void notifyParentChanged(int parentPosition) {
          P parent = mParentList.get(parentPosition);
          int flatParentPositionStart = getFlatParentPosition(parentPosition);
          int sizeChanged = changeParentWrapper(flatParentPositionStart, parent);
  
          notifyItemRangeChanged(flatParentPositionStart, sizeChanged);
      }