title: How to handle elements on PayPal popup with cypress.io
body: <p>I need to automate an end to end test that include purchase an order with PayPal. This test includes validate some elements in a screen that appears once the order is purchased.
  I'm currently trying with cypress.io.
  I know <a href="https://docs.cypress.io/guides/references/best-practices.html#Visiting-external-sites" rel="noreferrer">cypress recommend against visiting 3rd party sites</a> but I need to interact with PayPal in this test.
  I have not been able to deal with it.</p>
  
  <p>Is there any workaround to interact with the PayPal popup when using cypress.io?</p>