class ContextCompat {

    @Nullable
    public static String getSystemServiceName(@NonNull Context context,
            @NonNull Class<?> serviceClass) {
        if (Build.VERSION.SDK_INT >= 23) {
            return context.getSystemServiceName(serviceClass);
        }
        return LegacyServiceMapHolder.SERVICES.get(serviceClass);
    }

    protected  ContextCompat();

}