(eitherMappableFuture: StringAdd).self
(eitherMappableFuture: StringFormat).self
(eitherMappableFuture: ArrowAssoc[EitherMappableFuture[A]]).x
(Since version 2.10.0) Use leftOfArrow instead
(eitherMappableFuture: Ensuring[EitherMappableFuture[A]]).x
(Since version 2.10.0) Use resultOfEnsuring instead