Attribute revenue with Dodo Payments

import { cookies } from 'next/headers';
import { dodopayments } from '@/lib/dodopayments';

const cookieStore = await cookies();

const checkoutSession = await dodopayments.checkoutSessions.create({
  product_cart: [
    {
      product_id: productId,
      quantity: 1,
    },
  ],
  metadata: {
    datafast_visitor_id: cookieStore.get('datafast_visitor_id')?.value, // Passing DataFast's visitor ID to Dodo Payments
  },
  // ... other checkout session creation parameters
});