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