docs: private void addProgressInterceptor() {
          httpClient.networkInterceptors().add(new Interceptor() {
              @Override
              public Response intercept(Interceptor.Chain chain) throws IOException {
                  final Request request = chain.request();
                  final Response originalResponse = chain.proceed(request);
                  if (request.tag() instanceof ApiCallback) {
                      final ApiCallback callback = (ApiCallback) request.tag();
                      return originalResponse.newBuilder()
                              .body(new ProgressResponseBody(originalResponse.body(), callback)).build();
                  }
                  return originalResponse;
              }
          });
      }