private boolean resolveDistributorOperationCancellationConfig(Integer featureLevel) throws Exception {
        return resolveDistributorConfig((props) -> {
            if (featureLevel != null) {
                props.setContentLayerMetadataFeatureLevel(featureLevel);
            }
        }).enable_operation_cancellation();
    }
Here there is no good choice.
config-model/src/test/java/com/yahoo/vespa/model/content/ContentClusterTest.java