Get payment setup session

import { createClient } from '@spree/sdk'

const client = createClient({
  baseUrl: 'https://your-store.com',
  publishableKey: '<api-key>',
})

const session = await client.customer.paymentSetupSessions.get('pss_abc123', {
  bearerToken: '<token>',
})

{
  "id": "pss_UkLWZg9DAJ",
  "status": "pending",
  "external_id": "seti_test_8f5449c51058d217b826df7c",
  "external_client_secret": "seti_secret_883bafc0d7c8fb731626611c",
  "external_data": {
    "client_secret": "secret_123"
  },
  "created_at": "2026-03-28T11:44:51.144Z",
  "updated_at": "2026-03-28T11:44:51.144Z",
  "payment_method_id": "pm_UkLWZg9DAJ",
  "payment_source_id": null,
  "payment_source_type": null,
  "customer_id": "cus_UkLWZg9DAJ",
  "payment_method": {
    "id": "pm_UkLWZg9DAJ",
    "name": "Credit Card",
    "description": null,
    "type": "Spree::Gateway::Bogus",
    "session_required": true
  }
}