Open Stack

Hey,

The formal OpenStack documentation regarding Server's metadata attribute is that this attribute is optional.
When looking into the API responses for listServers or getServer - once an attribute is an optional one, then the general behavior of the serialization into API response is not to include/mention the attribute in the responses.
My question is what is expected from the metadata attribute? Because, when I am running against an OpenStack node - I still have the metadata included/mentioned in the responses even though it is empty.
Moreover, all the documentation examples for the above APIs, listServers or getServer - the metadata attribute is not included/mentioned.

Can someone explain?

Thanks.
Maty.
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