Adding Paypal "Pay Later" button in cart

I am trying to figure out how to add a Paypal “Pay Later” button to my cart. This is a buy now pay later (BNPL) type of payment. As a merchant I get paid fully upfront and the customer chooses their payment terms with Paypal.

FYI it doesn’t fit under the Snipcart “deferred payments” or 'bill me later" type of payment.

I think it is not supported. It will fall under custom payment gateway.