(WS-Biometric Devices) Method unlock session should add "lockHeldByAnother" to return value list.

[Pham The Dung <dung@iritech.com>]

According to this document "WS-Biometric Devices v1.0 - Candidate CSD 02.doc"

Method unlock (section 6.8)

URL Template	/lock/{sessionId}
HTTP Method	DELETE

Listed return values:
- success: The service returned to an unlocked state.
- failure: The service could not be transitioned into an unlocked state.
Services must reserve a failure status to report system or internal failures and prevent the release of the service lock. The occurrence of unlock  operations that fail is expected to be rare.
- invalid ID: The provided session id is not registered with the service.
- badValue: The provided session id is not a well-formed UUID.

If service is locked by another session ID then the return value should be another one named "lockHeldByAnother" right? If so, we should add that one to the document.

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Pham