presto-ml/src/main/java/io/prestosql/plugin/ml/ClassifierFeatureTransformer.java/ClassifierFeatureTransformer/deserialize
class ClassifierFeatureTransformer:    public static ClassifierFeatureTransformer deserialize(byte[] data)
    {
        List<Model> models = ModelUtils.deserializeModels(data);

        return new ClassifierFeatureTransformer((Classifier<Integer>) models.get(0), (FeatureTransformation) models.get(1));
    }