FirebaseAuthUser.cs

// user and auth properties
var user = userCredential.User;
var uid = user.Uid;
var name = user.Info.DisplayName; // more properties are available in user.Info
var refreshToken = user.Credential.RefreshToken; // more properties are available in user.Credential

// user methods
var token = await user.GetIdTokenAsync();
await user.DeleteAsync();
await user.ChangePasswordAsync("new_password");
await user.LinkWithCredentialAsync(authCredential);