NAME</code></a>.
 If there is no such request parameter, return an empty <code>Collection</code>.
 These client identifiers are used to identify components that
 will be processed during the <code>render</code> phase of the
 request processing lifecycle.  The returned <code>Collection</code> is
 mutable.</p></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the ids for the render portion of the lifecycle</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.or