In LwM2M, the Server requests to observe the Object with ID 4, Object instance ID 12,.5
Resource ID 10, tokens 4 and 9. To do this, he sends the Observe commands. The next 3
actions are: WRITE to /4/12/; WRITE to /4/12/10,tokens 3 to 10;DELETE /4/.After that
server sends Cancel Observe command .How many messages of the tokens update we
?should get