presto-main/src/main/java/io/prestosql/operator/aggregation/minmaxby/DoubleAndBlockPositionStateSerializer.java/DoubleAndBlockPositionStateSerializer/DoubleAndBlockPositionStateSerializer
class DoubleAndBlockPositionStateSerializer:    DoubleAndBlockPositionStateSerializer(Type firstType, Type secondType)
    {
        super(firstType, secondType);
    }