title: What is the equivalent of newSessionStore in wicket 1.5.7?
body: <p>newSessionStore() method is removed from wicket 1.5.</p>
  
  <pre><code>@Override
  protected ISessionStore newSessionStore()
  {
   return new HttpSessionStore(this);
  }
  </code></pre>
  
  <p>what is the equivalent of this method in 1.5?</p>