如何检测用户在discord.js中加入的行会？

const Discord = require('discord.js');
const client = new Discord.Client();

client.on('ready', () => {
  console.log(`Logged in as ${client.user.tag}`);
});

client.on('message', message => {
  if (message.content === '!checkGuild') {
    const userID = message.author.id;
    const user = client.users.cache.get(userID);

    user.guilds.cache.forEach(guild => {
      const member = guild.member(user);
      const guildName = guild.name;
      const guildRoles = member.roles.cache.map(role => role.name);

      // 在这里进行行会检测逻辑
      if (guildRoles.includes('行会名称')) {
        message.channel.send(`用户 ${user.tag} 加入了 ${guildName} 行会`);
      }
    });
  }
});

client.login('YOUR_DISCORD_TOKEN');