Import FirebaseOSX SDK to Mac app

Question

I want to create an application with the FirebaseOSX SDK.

I already installed pod.

But how to integrate it into the X-Code?

import Firebase

It gives me an error

import FirebaseOSX

And that also gives me an error. I searched a lot on firebase.com, but did not find a solution.

Error: no such module "Firebase"

Does anyone know a solution?