Configure and initialize FirebaseAuthClient

FirebaseAuthInit.cs

using Firebase.Auth;
using Firebase.Auth.Providers;
using Firebase.Auth.Repository;

// Configure...
var config = new FirebaseAuthConfig
{
    ApiKey = "<API KEY>",
    AuthDomain = "<DOMAIN>.firebaseapp.com",
    Providers = new FirebaseAuthProvider[]
    {
        // Add and configure individual providers
        new GoogleProvider().AddScopes("email"),
        new EmailProvider()
        // ...
    },
    UserRepository = new FileUserRepository("FirebaseSample")
};

// ...and create your FirebaseAuthClient
var client = new FirebaseAuthClient(config);