Existing Wording: The full representation, with id, extensions and value, showing the id and extensions in the sibling property:

"count" : 2

"count_" : {

"id" : "a1",

"extension" : [

{ "url" : "...", "valueXXX" : "...." }

]

}

Comment:

Confirm the "count_" element is correct in the JSON example. 2.27.0.4 (element.html#json) appears to indicate that it should be _count.

Summary:

Correct JSON example of extension on count