如何在子文档数组节点mongoose中推送多个对象

const mongoose = require('mongoose');

const childSchema = new mongoose.Schema({
  name: String,
  age: Number
});

const parentSchema = new mongoose.Schema({
  children: [childSchema]
});

const Parent = mongoose.model('Parent', parentSchema);

const newChildren = [
  { name: 'Child 1', age: 5 },
  { name: 'Child 2', age: 8 },
  { name: 'Child 3', age: 10 }
];

const parentId = 'your_parent_id'; // 假设已经有一个有效的父文档ID

Parent.findByIdAndUpdate(parentId, { $push: { children: { $each: newChildren } } }, (err, parent) => {
  if (err) {
    console.error(err);
  } else {
    console.log('子文档对象已成功推送到子文档数组节点中。');
  }
});