title: taskSnapshot.downloadUrl.toString() dont work in Kotlin
body: <p><a href="https://i.stack.imgur.com/BGWaT.jpg" rel="nofollow noreferrer">Code Img</a></p>
  
  <p>I'm trying to follow a tutorial but the part that teaches the value of <code>DownloadURL = taskSnapshot.downloadUrl.toString()</code> does not work anymore.
  I tried to substitute some options like :</p>
  
  <pre><code>val DownloadURL = taskSnapshot.storage.downloadUrl.toString()
  </code></pre>
  
  <p>Or :</p>
  
  <pre><code>val DownloadURL = ImageRef.downloadUrl.toString()
  </code></pre>
  
  <p>But I only get print values such as :</p>
  
  <blockquote>
    <p>com.google.android.gms.tasks.zzu@8a94cv2 and not a valid url.</p>
  </blockquote>