Won't build

[vpermits]

I downloaded the MLKit and opened the final project and it won't execute because:

Execution failed for task ':app:processDebugGoogleServices'.

File google-services.json is missing. The Google Services Plugin cannot function without it. Searched Location: /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/google-services.json /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/src/nullnull/google-services.json /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/src/debug/google-services.json /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/src/nullnullDebug/google-services.json /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/src/nullnull/debug/google-services.json /Users/scott/Downloads/mlkit-android-master/custom-model/final/app/src/debug/nullnull/google-services.json

Looks like docs direct me to Firebase on how to get the .json and that was a "fail". I think this is a bad start for a newbie...