(roundRobiner: StringAdd).self
(roundRobiner: StringFormat).self
(roundRobiner: ArrowAssoc[RoundRobiner[A, M]]).x
(Since version 2.10.0) Use leftOfArrow
instead
(roundRobiner: Ensuring[RoundRobiner[A, M]]).x
(Since version 2.10.0) Use resultOfEnsuring
instead