code: public void insert(@NonNull final Pair<Integer, T>... indexItemPairs) {
          insert(Arrays.asList(indexItemPairs));
      }
docs: Inserts items at given indexes. Will show an entrance animation for the new items if the newly added item is visible.
  Will also call {@link Insertable#add(int, Object)} of the root {@link android.widget.BaseAdapter}.
  
  @param indexItemPairs the index-item pairs to insert. The first argument of the {@code Pair} is the index, the second argument is the item.