@Override
            public ListProductsInProductSetRequest injectToken(
                ListProductsInProductSetRequest payload, String token) {
              return ListProductsInProductSetRequest.newBuilder(payload)
                  .setPageToken(token)
                  .build();
            }
The default scopes of the service.
java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/ProductSearchStubSettings.java