How to create SoundCloud api object?

In my iPhone app, I'm trying to allow users to post an audio track to Facebook via Soundcloud. I've been going through this tutorial and have reached this line of code:

 [api perf开发者_如何学PythonormMethod:@"GET" onResource:@"me/connections.json"
     withParameters:nil context:nil userInfo:nil];

My question is going to show how much of a novice I am in this, but: How do I instantiate the api object? Is it a part of a library? What class is it from?

If you open the test projects it shows you in the app delegate how to create the API object.