I think the Yeelight WiFi Light Inter-Operation Specification is not up to date. For example the MODEL value for Yeelight Desk Lamp (desklamp) is not indicated in the document.
I developed a C# (.Net) library and during my tests I also encoutered several Properties from the notification messages that are not in the document (I lost my examples, sorry).
As the document does not have any version, we may think it was not updated for a long time. So I have 3 questions :
1) Can we still trust the informations it contains ?
2) What are the other changes that are not referenced in the document ? (like new commands, new parameters etc.)
3) How to be notified when the specification evolves ?