如果我只想向角色为A的用户发送通知，我需要使用令牌吗？
下面是我的代码index.js

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


exports.notifyDoctorregisTopic = functions.firestore.document('clinicreport/{reportId}')
    .onCreate(async (snapshot, context) => {
        const data = snapshot.data();

        // Check the conditions
        if (data.uid !== null && data.status === 'waiting') {
            const payload = {
                notification: {
                    title: 'มีClinicสมัครมา',
                    body: 'A new clinic report is available',
                    clickAction: 'FLUTTER_NOTIFICATION_CLICK',
                },
                data: {
                    click_action: 'FLUTTER_NOTIFICATION_CLICK', // for background
                }
            };

            // Send the notification to the Doctorregis topic
            return admin.messaging().sendToTopic('Doctorregis', payload);
        }
        return null;
    });

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我尝试这个代码，它发送通知给所有用户。