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<html lang=en>
<head>
  <meta charset="UTF-8">
  <title>Check Whether User Can Make Payment Before All Prices Are Known</title>
  <!--
    If the checkout flow needs to know whether `PaymentRequest.canMakePayment()` will 
    return true even before all line items and their prices are known, then you can 
    instantiate PaymentRequest with dummy data and pre-query `.canMakePayment()`.
    
    If you call `.canMakePayment()` multiple times, keep in mind that the first parameter 
    to the 