how can this method be changed to sequelize syntax? Multiple table associations
urgent.

makeupUpdateAccountInfo: function (data) {
        var companyCode = ""
        if (data && data.companyCode) {
            companyCode = data.companyCode.toUpperCase()
        }
        var parameJson = {
            "set": {
                "a.nick_name": data.nickName,
                "a.company_code": companyCode
            },
            "table": ["account as a", "account_session as ass"],
            "where": {
                "and": {
                    "ass.access_key": data.session,
                    "ass.account_id": "item:a.id"
                }
            }
        };

        return parameJson;
    }
}