Do you need the SDK to be able to integrate external REST APIs? We have access to an API from one of our suppliers and I was trying to build a connection in Application Studio. I added the “rest” widget to an event and expected to be able to configure it in the Properties. But when I go into the Properties>Rest Services>Request, the Service Name is a drop down. Do I select something that is already in the system or is that where my SDK service would go?