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