Appservice call returns a list instead of Response object

Hi,

I wonder how and why is this possible: in the attached image you have the model of the App Service at left. At right you can see that after the call, the Response object is actually a List. But it's not a list we can choose to iterate over. I'm expecting the SearchResultList to contain my 411 elements...

https://www.dropbox.com/s/riruv194x1vyqq0/appservicecall.png?dl=0

Any insights are appreciated. Thanks!