@Override
            public ApiFuture<ListTasksPagedResponse> getFuturePagedResponse(
                UnaryCallable<ListTasksRequest, ListTasksResponse> callable,
                ListTasksRequest request,
                ApiCallContext context,
                ApiFuture<ListTasksResponse> futureResponse) {
              PageContext<ListTasksRequest, ListTasksResponse, Task> pageContext =
                  PageContext.create(callable, LIST_TASKS_PAGE_STR_DESC, request, context);
              return ListTasksPagedResponse.createAsync(pageContext, futureResponse);
            }
The default scopes of the service.
java-tasks/google-cloud-tasks/src/main/java/com/google/cloud/tasks/v2beta3/stub/CloudTasksStubSettings.java