SDK Api's doen't match documentation

[kvikas8]

In Documentation code is as follows

// Set the fingerprint data, this would have been generated on your server.
FingerPrintObjectType *fpData = [FingerPrintObjectType
fingerPrintObjectType];
fpData.hashValue = fingerprintHash;
fpData.sequenceNumber=fingerprintSequence;
fpData.timeStamp=fingerprintTimestamp;
// Set the merchant authentication data.
request.anetApiRequest.merchantAuthentication.name = @"5KP3u95bQpv"; //
Note this is API Login ID
request.anetApiRequest.merchantAuthentication.fingerPrint = fpData;

Whereas merchantAuthentication as no property named "fingerPrint", hence don't know how to pass fingerprint to authorize.net