Set pre-selected payment method option with checkout extensibility

[CrunchyBytes]

Hello, as the title states, I want to set the pre-selected payment method option using checkout extensibility. I contacted Shopify support about this issue as the api didn't have much useful information for this. They said it wasn't possible, however, https://snocks.com/ has this feature on their site.  

If you add to cart and go to the 4th step, you'll see that paypal is pre-selected on page load. You can select another item, refresh and it'll go back to paypal.

Any insight into how this was accomplished? 

[libraheem]

 CrunchyBytes did you get a fix for this issue ? Im having the same problem.