UnauthorizedErrorInterceptor

        final Interceptor unauthorizedErrorInterceptor = new Interceptor() {
            @Override public Response intercept(Interceptor.Chain chain) throws IOException {
                Request request = chain.request();
                Response response = chain.proceed(request);

                boolean unAuthorized = (response.code() == 401);
                if (unAuthorized) {
                    EventBus.getDefault().post(new EventsHolder.RequestWithInvalidTokenEvent());
                }
                return response;
            }
        };