Android class 'GeofencingClient' doesn't exist?

SimpleJ :

I'm attempting to follow the Android geofencing guide, but I immedietely get stuck when I try to declare a GeofencingClient variable:

Normally I would be able to just press Alt+Enter and select "Import class", but this option isn't available here:

Does the GeofencingClient class exist anymore? Do I need to install some third party library?

Bö macht Blau :

GeofencingClient is part of Google Play Services. You need to add the following dependency to the build.gradle file of the module, then you will be able to import the class in your code:

dependencies {
    // ...
    implementation com.google.android.gms:play-services-location:16.0.0
}