after append 5
structure 
    structure[] value 
        null
        null
        null
        null
        null
    structure alarm
        int severity 0
        int status 0
        string message 
    structure timeStamp
        long secondsPastEpoch 0
        int nanoSeconds 0
        int userTag 0
after remove(0,2)
structure 
    structure[] value 
        null
        null
        null
    structure alarm
        int severity 0
        int status 0
        string message 
    structure timeStamp
        long secondsPastEpoch 0
        int nanoSeconds 0
        int userTag 0
after remove 0,1,3structure 
    structure[] value 
        null
        null
    structure alarm
        int severity 0
        int status 0
        string message 
    structure timeStamp
        long secondsPastEpoch 0
        int nanoSeconds 0
        int userTag 0
after compressstructure 
    structure[] value 
    structure alarm
        int severity 0
        int status 0
        string message 
    structure timeStamp
        long secondsPastEpoch 0
        int nanoSeconds 0
        int userTag 0