nova/placement-api-ref/source/get-root.json

{
    "versions" : [
        {
            "min_version" : "1.0",
            "id" : "v1.0",
            "max_version" : "1.17",
            "status": "CURRENT",
            "links": [
                {
                    "href": "",
                    "rel": "self"
                }
            ]
        }
    ]
}