ode>
<div class="block">
 Return the specified state as a <code>String</code> without any markup
 related to the rendering technology supported by this ResponseStateManager.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sun/faces/renderkit/ResponseStateManagerImpl.html#isPostback-javax.faces.context.FacesContext-">isPostback</a></span>(<a href="../../../../javax/faces/context/Face