@Override
            public ApiFuture<ListCdnKeysPagedResponse> getFuturePagedResponse(
                UnaryCallable<ListCdnKeysRequest, ListCdnKeysResponse> callable,
                ListCdnKeysRequest request,
                ApiCallContext context,
                ApiFuture<ListCdnKeysResponse> futureResponse) {
              PageContext<ListCdnKeysRequest, ListCdnKeysResponse, CdnKey> pageContext =
                  PageContext.create(callable, LIST_CDN_KEYS_PAGE_STR_DESC, request, context);
              return ListCdnKeysPagedResponse.createAsync(pageContext, futureResponse);
            }
The default scopes of the service.
java-video-stitcher/google-cloud-video-stitcher/src/main/java/com/google/cloud/video/stitcher/v1/stub/VideoStitcherServiceStubSettings.java