Possible new issue: identifier in CloseSequenceResponse message

[Anish Karmarkar <Anish.Karmarkar@oracle.com>]

While creating the proposal for TerminateSequenceResponse message, I 
noticed that the CloseSequenceResponse message does not have the 
Sequence Identifier in the message. Is this an an oversight and that the 
identifier does indeed need to be included in the message OR is the 
intention to rely on wsa:RelatesTo? I think having the identifier in the 
message just makes it much cleaner/simpler/consistent. But regardless, I 
included the identifier in the TSR message (assuming that it was an 
error not to include it in the CloseSequenceReponse message -- possibly 
an incorrect assumption) and we need to be consistent: either have the 
Identifier in the CloseSequenceResponse message or remove the Identifier 
in the TerminateSequenceResponse message.

I should have highlighted this in my proposal for the TSR message. I 
intended to, but somehow missed it. Apologies.

-Anish
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