(sumValue: StringAdd).self
(sumValue: StringFormat).self
(sumValue: ArrowAssoc[AggregationFramework.SumValue]).x
(Since version 2.10.0) Use leftOfArrow
instead
(sumValue: Ensuring[AggregationFramework.SumValue]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
(Since version 0.12.0) Use SumAll