@Override
  protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putBoolean(KEY_FIRST_ONBOARDING_EXPERIENCE, onFirstOnboardingExperience);
  }
Whether we are in a very first onboarding experience or not.
java/com/google/android/apps/authenticator/howitworks/HowItWorksActivity.java