title: Get list of youtube playlists including unlisted
body: <p>I am using <a href="https://developers.google.com/youtube/v3/docs/playlists" rel="nofollow">v3 of the Youtube API</a> and am trying to get a list of my channel's playlists.</p>
  
  <p>It's working, however it only returns playlists that have a <code>status.privacyStatus</code> of <code>public</code>.</p>
  
  <p>How can I retrieve playlists that are <code>unlisted</code>?</p>
  
  <p>This is the call I am using.</p>
  
  <pre><code>public function getPlaylists($channelId)
  {
      $this-&gt;_quotaConsumed += 3;
      return $this-&gt;getService()
          -&gt;playlists
          -&gt;listPlaylists('id,snippet,status', array(
              'channelId'  =&gt; $channelId,
              'maxResults' =&gt; 50,
          ));
  }
  </code></pre>
  
  <p>I am using an OAuth Service Account.</p>