class AccuracyAggregator implements CombinerAggregator<AccuracyState<L>> {

	@Override
	public AccuracyState<L> combine(AccuracyState<L> val1, AccuracyState<L> val2) {
		return new AccuracyState<L>(val1.totalCount + val2.totalCount, val1.errorCount + val2.errorCount);
	}

}