[O] Insert UUID with org-insert-todo-heading

[Esben Stien]

I'm using the following to have a CREATED field in the PROPERTIES field
of a TODO: 

;; advice org-insert-todo-heading to insert a created timestamp using org-expiry
(defadvice org-insert-todo-heading (after mrb/created-timestamp-advice activate)
  "Insert a CREATED property using org-expiry.el for TODO entries"
  (mrb/insert-created-timestamp)
)
(ad-activate 'org-insert-todo-heading)

So, I get: 

**** TODO 
     :PROPERTIES:
     :CREATED:  [2014-04-06 sø. 20:11]
     :END:

Is there any way to insert a UUID as well?, like:

**** TODO 
     :PROPERTIES:
     :CREATED:  [2014-04-06 sø. 20:11]
     :UUID: 70f273b5-8bce-315f-6f31-6d9ec9a8b739
     :END:

Any pointers as to how I can achieve this?

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