[w3c/payment-method-basic-card] Unclear what happens when there are duplicates (#36)

```JS
new PaymentRequest([
 {
  supportedMethods: "basic-card",
  data: {
    supportedNetworks: "visa",
  }
 }, {
  supportedMethods: "basic-card",
  data: {
   supportedNeworks: "mastercard",
  }
}, {
  supportedMethods: "basic-card",
}, {
  supportedMethods: "basic-card",
  supportedTypes: "credit",
}], details); 
```

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/payment-method-basic-card/issues/36