// new CleartkExtractor.Bag(new CleartkExtractor.Following(10))
);
if (!fileToDomain.isEmpty()) {
// set up FeatureFunction for all the laggard, non-Extractor features
ffDomainAdaptor = new FedaFeatureFunction( new ArrayList<String>(new HashSet<String>(fileToDomain.values())) );
}
entityTreeExtractors = new ArrayList<SimpleFeatureExtractor>();
}