有没有可能有条件地链接populate()方法调用？

const UserSchema = new mongoose.Schema({
  name: String,
  posts: [{
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Post'
  }]
});

const PostSchema = new mongoose.Schema({
  title: String,
  content: String,
  published: Boolean
});

const User = mongoose.model('User', UserSchema);
const Post = mongoose.model('Post', PostSchema);

// 有条件地链接populate()方法调用
User.find()
  .populate({
    path: 'posts',
    match: { published: true } // 只填充已发布的文章
  })
  .exec((err, users) => {
    if (err) {
      console.error(err);
    } else {
      console.log(users);
    }
  });