code: public void notifyAdapterItemRangeRemoved(int position, int itemCount) {
          // handle our extensions
          for (IAdapterExtension<Item> ext : mExtensions.values()) {
              ext.notifyAdapterItemRangeRemoved(position, itemCount);
          }
  
          cacheSizes();
          notifyItemRangeRemoved(position, itemCount);
      }
docs: wraps notifyItemRangeRemoved
  
  @param position  the global position
  @param itemCount the count of items removed