| 1234567891011121314151617181920 | const mongoose = require('mongoose')const user = require('./user.model')const { Schema, Types } = mongoosemodule.exports = mongoose.model(  'Log',  new Schema(    {      user: {        type: Types.ObjectId,        ref: user,      },      aktivitas: { type: String },      os: { type: String },      ipv4: { type: String },    },    { timestamps: true }  ),  'log')
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