所以，我想創建一個使用多個用戶 ping 作為輸入的命令。這是我到目前為止所擁有的：let mentionedUser = msg.mentions.users.first();if (mentionedUser === msg.author) return msg.channel.send(  `***${msg.author.username}** kisses... themselves? ~~Impressive.~~` );else return msg.channel.send('Oi! You gotta actually ping a member!');if (parameters) { var embed1 = new Discord.MessageEmbed()  .setColor('#06FBFE')  .setDescription(   `**${msg.author.username}** kisses **${mentionedUser.username}**`  ); msg.channel.send(embed1);} else return msg.channel.send('Please give me a user to kiss! :3');我應該如何在不創建undefined變量的情況下使用多次提及？