236     return Void();  in getHardwareInfo()
249     return Void();  in getHmacSharingParameters()
272     return Void();  in computeSharedHmac()
302     return Void();  in verifyAuthorization()
332     return Void();  in generateKey()
352     return Void();  in getKeyCharacteristics()
375     return Void();  in importKey()
402     return Void();  in importWrappedKey()
423     return Void();  in exportKey()
441     return Void();  in attestKey()
461     return Void();  in upgradeKey()
508     return Void();  in begin()
538     return Void();  in update()
569     return Void();  in finish()