Existence

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 3,
    "list": [
        {
            "id": 1,
            "name": "有り",
            "is_exists": true,
            "is_none": false
        },
        {
            "id": 2,
            "name": "無し",
            "is_exists": false,
            "is_none": true
        },
        {
            "id": 0,
            "name": "不明",
            "is_exists": false,
            "is_none": false
        }
    ]
}