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

        return new RegressorFeatureTransformer((Regressor) models.get(0), (FeatureTransformation) models.get(1));
    }