code: public <Item extends IItem> EndlessScrollHelper<Model> withNewItemsDeliveredTo(@NonNull IItemAdapter<?, Item> itemAdapter, @NonNull IInterceptor<Model, Item> itemFactory, @NonNull OnNewItemsListener<Model> extraOnNewItemsListener) {
          mOnNewItemsListener = new DeliverToIItemAdapter2<>(itemAdapter, itemFactory, extraOnNewItemsListener);
          return this;
      }
docs: An overload of {@link #withNewItemsDeliveredTo(IItemAdapter, IInterceptor) withNewItemsDeliveredTo()}
  that allows additional callbacks.
  
  @param itemAdapter
  @param itemFactory
  @param extraOnNewItemsListener
  @param <Item>
  @return