title: how to get all agents with phrets
body: <p>I am trying to fetch all MLS agents using phrets, but everything I try returns nothing.</p>
  
  <p>The goal of this is to be able to get more info about a salesperson of an MLS listing.</p>
  
  <pre><code># Search query
  $search = $rets-&gt;SearchQuery("roster","Agent","*");
  </code></pre>
  
  <p>If that is not possible, is there any way how I can figure out all available fields for that class?</p>