@Override
            public ApiFuture<ListQueuedResourcesPagedResponse> getFuturePagedResponse(
                UnaryCallable<ListQueuedResourcesRequest, ListQueuedResourcesResponse> callable,
                ListQueuedResourcesRequest request,
                ApiCallContext context,
                ApiFuture<ListQueuedResourcesResponse> futureResponse) {
              PageContext<ListQueuedResourcesRequest, ListQueuedResourcesResponse, QueuedResource>
                  pageContext =
                      PageContext.create(
                          callable, LIST_QUEUED_RESOURCES_PAGE_STR_DESC, request, context);
              return ListQueuedResourcesPagedResponse.createAsync(pageContext, futureResponse);
            }
The default scopes of the service.
java-tpu/google-cloud-tpu/src/main/java/com/google/cloud/tpu/v2/stub/TpuStubSettings.java