nodejs sequelize框架多表修改问题,求解???

Question

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这个方法怎么改成sequelize 语法呢?多表关联
急急急...

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;
    }
}