online-interceptor.kt

 static Interceptor onlineInterceptor = new Interceptor() {
    @Override
    public okhttp3.Response intercept(Chain chain) throws IOException {
        okhttp3.Response response = chain.proceed(chain.request());
        int maxAge = 60; // read from cache for 60 seconds even if there is internet connection
        return response.newBuilder()
                .header("Cache-Control", "public, max-age=" + maxAge)
                .removeHeader("Pragma")
                .build();
    }
};