如何将返回的消息嵌入？DISCORD.JS

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

client.on('message', message => {
  if (message.content === '!embed') {
    const embed = new Discord.MessageEmbed()
      .setTitle('嵌入消息示例')
      .setDescription('这是一个嵌入消息的示例。')
      .setColor('#0099ff')
      .addField('字段1', '值1', true)
      .addField('字段2', '值2', true)
      .setFooter('这是页脚文本', 'https://example.com/favicon.png');

    message.channel.send(embed);
  }
});

client.login('YOUR_DISCORD_TOKEN');