title: How to logout with flutter_appauth?
body: <p>I need to logout from <a href="https://pub.dev/packages/flutter_appauth" rel="nofollow noreferrer">flutter_appauth</a> with a button press in flutter;</p>
  <p>This package doesn't have any logout method.</p>
  <p>This is my get token code:</p>
  <pre><code>appAuth.authorizeAndExchangeCode(AuthorizationTokenRequest(
                  clientID, redirectUrl,
                  discoveryUrl: discoveryUrl,
                  scopes: scopes,
                  clientSecret: clientSecret
  </code></pre>