sample
        GET https://opendata.resas-portal.go.jp/api/v1/jobs/middle?iscoCode=B
        {
    "message": null,
    "result": [{
        "iscoCode": "B",
        "ismcoCode": "05",
        "ismcoName": "研究者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "06",
        "ismcoName": "農林水産技術者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "07",
        "ismcoName": "製造技術者(開発)"
    }, {
        "iscoCode": "B",
        "ismcoCode": "08",
        "ismcoName": "製造技術者(開発を除く)"
    }, {
        "iscoCode": "B",
        "ismcoCode": "09",
        "ismcoName": "建築・土木・測量技術者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "10",
        "ismcoName": "情報処理・通信技術者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "11",
        "ismcoName": "その他の技術者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "12",
        "ismcoName": "医師,歯科医師,獣医師,薬剤師"
    }, {
        "iscoCode": "B",
        "ismcoCode": "13",
        "ismcoName": "保健師,助産師,看護師"
    }, {
        "iscoCode": "B",
        "ismcoCode": "14",
        "ismcoName": "医療技術者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "15",
        "ismcoName": "その他の保健医療従事者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "16",
        "ismcoName": "社会福祉専門職業従事者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "17",
        "ismcoName": "法務従事者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "18",
        "ismcoName": "経営・金融・保険専門職業従事者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "19",
        "ismcoName": "教員"
    }, {
        "iscoCode": "B",
        "ismcoCode": "20",
        "ismcoName": "宗教家"
    }, {
        "iscoCode": "B",
        "ismcoCode": "21",
        "ismcoName": "著述家,記者,編集者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "22",
        "ismcoName": "美術家,デザイナー,写真家,映像撮影者"
    }, {
        "iscoCode": "B",
        "ismcoCode": "23",
        "ismcoName": "音楽家,舞台芸術家"
    }, {
        "iscoCode": "B",
        "ismcoCode": "24",
        "ismcoName": "その他の専門的職業従事者"
    }]
}