GET /api/combinations/OLI218/relationships/variant_set?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/vnd.api+json
Vary: Accept

{
    "data": [
        {
            "type": "SmallVariant",
            "id": "424"
        },
        {
            "type": "SmallVariant",
            "id": "425"
        }
    ]
}