Get UDID with AirWatch MDM

UDID.m

// UDID is no longer available in iOS 6+ due to security / privacy reasons. It can't be retreived the old way 
// even when AirWatch MDM is used, because, the APIs are not available.

// However, in order to find more info from AirWatch for the enrolled device and the associated user, we need
// to have UDID, Serial Number or Mac Address which can't be accessed directly either.

// During the installation process, AirWatch pushes a profile and certificate to the user's device which
// contains the UDID.

// This operates on the assumption that AirWatch is configured to push the UDID to the device during the
// configuration/enrollment process.

[[[NSUserDefaults standardUserDefaults] 
  dictionaryForKey:@"com.apple.configuration.managed"][@"com.AirWatch.mdm.DeviceUid"]
 lowercaseString]

Is this solution still works?
if so give me more details about it.