@Override
            public ApiFuture<ListProductSetsPagedResponse> getFuturePagedResponse(
                UnaryCallable<ListProductSetsRequest, ListProductSetsResponse> callable,
                ListProductSetsRequest request,
                ApiCallContext context,
                ApiFuture<ListProductSetsResponse> futureResponse) {
              PageContext<ListProductSetsRequest, ListProductSetsResponse, ProductSet> pageContext =
                  PageContext.create(callable, LIST_PRODUCT_SETS_PAGE_STR_DESC, request, context);
              return ListProductSetsPagedResponse.createAsync(pageContext, futureResponse);
            }
The default scopes of the service.
java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java