">Use the container login mechanism configured for the <code>ServletContext</code> to authenticate the user making this
 request.

 <p>
 This method may modify and commit the argument <code>HttpServletResponse</code>.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>response</code> - The <code>HttpServletResponse</code> associated with this <code>HttpServletRequest</code></dd>
<dt>Returns:</dt>
<dd><code>true</code> when non-null values were or have been established as the values returned by
 <code>g