Access first and last card?

I have setup a recycler view that displays a card layout using adapter. I need to set the padding of first and last card only. Is there any way, I can access the card directly?

After setting up the adapter for recycler view, I tried to accesse the first card by using following code, but it always returns null. Any help is appreciated.

CardView cv = (CardView)recyclerView.mRecyclerView.getChildAt(0);

where recyclerView being the Instance of UltimateRecyclerView.

No source files or tests are named in the issue. Start by reproducing the RecyclerView setup described and inspect how UltimateRecyclerView exposes its child views; done means establishing and documenting a working way to apply padding only to the first and last cards.

Written by the indexing model from the issue text.