(extendedBSONValue: StringAdd).self
(extendedBSONValue: StringFormat).self
(extendedBSONValue: ArrowAssoc[ExtendedBSONValue[B]]).x
(Since version 2.10.0) Use leftOfArrow instead
(extendedBSONValue: Ensuring[ExtendedBSONValue[B]]).x
(Since version 2.10.0) Use resultOfEnsuring instead