title: In discord.js, Can I send DirectMessage to user With DiscordBot?
body: <p>I want to send private messages to a User with a Discord Bot.</p>
  
  <p>The user is not in the same server as the bot.</p>
  
  <p>If I can use author.sendMessage, how can I initialize(find) author variable?</p>
  
  <p>Can I find the user with User id?</p>
  
  <p>Thank you for reading.</p>