Attach a payment method already created via Stripe Elements

curl -X POST https://api.moonborn.co/v1/billing/payment_methods \
  -H "Authorization: Bearer $MOONBORN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
      "stripePaymentMethodId": "<string>"
    }'

import Moonborn from '@moonborn/sdk';

const client = new Moonborn({ apiKey: process.env.MOONBORN_API_KEY });

const result = await client.billing.attachPaymentMethod({
  stripePaymentMethodId: "<string>",
});

import os
from moonborn import Moonborn

client = Moonborn(api_key=os.environ["MOONBORN_API_KEY"])

result = client.billing.attach_payment_method(
    stripe_payment_method_id="<string>",
)