@VisibleForTesting
    static Intent createResultData(String phoneNumber) {
        final Intent resultData = new Intent();
        resultData.putExtra(KEY_PHONE_NUMBER, phoneNumber);
        return resultData;
    }
This a placeholder Activity for a contacts screen. This activity is never opened and does not
contain any real contact data for keeping this sample simple and focused.
ui/espresso/IntentsBasicSample/app/src/main/java/com/example/android/testing/espresso/IntentsBasicSample/ContactsActivity.java