        supportedTypes: ['debit', 'credit']
        }
      }];
    }

    function buildShoppingCartDetails() {
      // Hardcoded for demo purposes:
      return {
        id: 'order-123',
        displayItems: [
          {
            label: 'Example item',
            amount: {currency: 'USD', value: '1.00'}
          }
        ],
        total: {
          label: 'Total',
          amount: {currency: 'USD', value: '1.00'}
        },
        shippingOptions: [
          {  
            id: 'example-shi