AmbientDocumentSourceDescriptor.attributeBuilder(attributes).topic(topic);
ProcessingResult result = controller.process(
attributes, AmbientDocumentSource.class, algorithm, ClusteringMetricsCalculator.class);
t.rowData("Topic", topic.name());
t.rowData("Algorithm", algorithm.getSimpleName());
Map<String, Object> attrs = result.getAttributes();
t.rowData(