cara lulus transaksi sequel untuk menghemat metode

models.sequelize.transaction(function (t) {

return models.Banks.findOne({where: {
       money: {
         $gt: 0
       }
    }, lock: t.LOCK.UPDATE, transaction: t }).then(function(bank){

    bank.money -= amountToWithdraw;
    return bank.save({transaction: t});
  })
})
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