(specializationTransformer: StringAdd).self
(specializationTransformer: StringFormat).self
(specializationTransformer: ArrowAssoc[SpecializationTransformer]).x
(Since version 2.10.0) Use leftOfArrow instead
(specializationTransformer: Ensuring[SpecializationTransformer]).x
(Since version 2.10.0) Use resultOfEnsuring instead