presto-main/src/main/java/io/prestosql/operator/aggregation/arrayagg/ArrayAggregationStateFactory.java/ArrayAggregationStateFactory/ArrayAggregationStateFactory
class ArrayAggregationStateFactory:    public ArrayAggregationStateFactory(Type type, ArrayAggGroupImplementation mode)
    {
        this.type = type;
        this.mode = mode;
    }