Firebase云函数:如何使用通配符表示法获取对文档的引用？

const admin = require('firebase-admin');
admin.initializeApp();

const db = admin.firestore();

db.collection('users').where('name', '>=', 'A').where('name', '<=', 'A\uf8ff').get()
  .then((querySnapshot) => {
    querySnapshot.forEach((doc) => {
      console.log(doc.id, ' => ', doc.data());
    });
  })
  .catch((error) => {
    console.log('Error getting documents: ', error);
  });

const admin = require('firebase-admin');
admin.initializeApp();

const db = admin.database();

const ref = db.ref('users');

ref.orderByChild('name').startAt('A').endAt('A\uf8ff').once('value', (snapshot) => {
  snapshot.forEach((childSnapshot) => {
    console.log(childSnapshot.key, ' => ', childSnapshot.val());
  });
});

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();

exports.getUsersStartingWithA = functions.https.onCall(async (data, context) => {
  const db = admin.firestore();
  const querySnapshot = await db.collection('users').where('name', '>=', 'A').where('name', '<=', 'A\uf8ff').get();

  const users = [];
  querySnapshot.forEach((doc) => {
    users.push(doc.data());
  });

  return users;
});

const functions = firebase.functions();
const getUsersStartingWithA = functions.httpsCallable('getUsersStartingWithA');

getUsersStartingWithA()
  .then((result) => {
    console.log(result.data);
  })
  .catch((error) => {
    console.error(error);
  });