title: Issue with Integrating the Stripe Billing Portal using .Net
body: <p>I am a little embarrassed asking this question here since for anyone who has done this the answer will be real simple. I have tried several times asking Stripe Support but they simply keep referring me to the documentation (which is incomplete). I am building my first integration to the Stripe Billing Portal <a href="https://stripe.com/docs/billing/subscriptions/integrating-customer-portal" rel="nofollow noreferrer">https://stripe.com/docs/billing/subscriptions/integrating-customer-portal</a> using .Net</p>
  <p>The code snippet below is taken from their site and it references the class SessionCreateOptions. My simple question is &quot;what is the fully qualified namespace to this class in Stripe&quot; as Visual Studio Cannot find it.</p>
  <pre><code>StripeConfiguration.ApiKey = &quot;sk_test_47ZQVRjCoUpDACp40ICpzZKA00qYqRydc0&quot;;
  
  [HttpPost(&quot;create-customer-portal-session&quot;)]
  public async Task&lt;IActionResult&gt; CustomerPortal()
  {
    // Authenticate your user.
    var options = **new SessionCreateOptions**
    {
      Customer = &quot;{{ CUSTOMER_ID }}&quot;,
      ReturnUrl = &quot;https://example.com/account&quot;,
    };
    var service = new SessionService();
    var session = service.Create(options);
  
    return Response.Redirect(session.Url);
  }
  </code></pre>
  <p>Many thanks in advance for any help</p>