title: fetch geometries of a composite object
body: <p>How can one fetch geometries of composite objects?</p>
  
  <p>Steps :</p>
  
  <ol>
  <li><p>Load a model in viewer.</p></li>
  <li><p>Select an composite-object(icon: <code>Composite Object</code>, dbid: <code>1234</code>) of viewer.</p></li>
  <li><p>Now, How can I get geometries(icon: <code>Geometry</code>) of this composite objects?</p></li>
  </ol>
  
  <p>Note: The current solution I have is to iterate the following ids incrementally until I find a next <code>composite-object</code>, which is generally the case.</p>
  
  <p><a href="https://i.stack.imgur.com/83joK.png" rel="nofollow noreferrer">json-file for properties</a></p>