title: Getting ReferenceError: "OAuth1" is not defined when migrating from OAuthConfig
body: <p>I'm receiving a </p>
  
  <blockquote>
    <p>ReferenceError: "OAuth1" is not defined.</p>
  </blockquote>
  
  <p>when trying to migrate my code from OAuthConfig. Is there a library I need to invoke in Resources->Libraries?</p>
  
  <p>The example code I used is the one from <a href="https://developers.google.com/apps-script/migration/oauth-config" rel="nofollow">Google Developers</a></p>
  
  <p>Any help would be appreciated.</p>