presto-ml/src/main/java/io/prestosql/plugin/ml/Dataset.java/Dataset/Dataset
class Dataset:    public Dataset(List<Double> labels, List<FeatureVector> datapoints, Map<Integer, String> labelEnumeration)
    {
        requireNonNull(datapoints, "datapoints is null");
        requireNonNull(labels, "labels is null");
        requireNonNull(labelEnumeration, "labelEnumeration is null");
        checkArgument(datapoints.size() == labels.size(), "datapoints and labels have different sizes");
        this.labels = ImmutableList.copyOf(labels);
        this.datapoints = ImmutableList.copyOf(datapoints);
        this.labelEnumeration = ImmutableMap.copyOf(labelEnumeration);
    }