title: How to create a RenderURL during action phase in a portlet?
body: <p>In the method <code>processAction(ActionRequest request, ActionResponse response)</code>, I  insert a record into database and get the <code>ID</code> and then
  I want to redirect to the view page of this record. So I need to create a <code>RenderURL</code> with a parameter value for that ID.</p>
  
  <p><code>ActionResponse</code> doesn't provide method to create a <code>renderURL</code>. Some codes in Liferay do similar things like:</p>
  
  <ol>
  <li>create <code>renderURL</code> before accessing the <code>actionURL</code></li>
  <li>pass the <code>renderURL</code> as a parameter in the <code>actionURL</code></li>
  </ol>
  
  <p>However, at that time, I don't know the value of <code>ID</code>.</p>
  
  <p>Other codes also use <code>new PortletURLImpl()</code> directly. My portlet cannot see that class.</p>