title: How can i get the chat admin user using telethon
body: <p>Am trying to get the admin user of a chat using the following.</p>
  
  <pre><code> client.iter_participants(channel, filter=ChannelParticipantsAdmins) 
  </code></pre>
  
  <p>But using this I can only get the admin user of the channel, but not the admin user of the chat.</p>