does this package support multithreading? about xgboost-predictor-java HOT 1 OPEN

// Predictor predictor = ...;
// List<SimpleEntry<Integer, FVec>> data = ...;

OptionalDouble logloss = data.parallelStream()
        .mapToDouble(pair -> {
            double predValue = predictor.predictSingle(pair.getValue());
            predValue = Math.min(Math.max(predValue, 1e-15), 1 - 1e-15);
            int actual = pair.getKey();
            return actual * Math.log(predValue) + (1 - actual) * Math.log(1 - predValue);
        })
        .average();

logloss.ifPresent(d -> System.out.println("Logloss (parallel): " + (-d)));