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