esolved</code> property of the
 <code>ELContext</code> object must be set to <code>true</code> by the resolver, before returning. If this property is
 not <code>true</code> after this method is called, the caller should ignore the return value.

 <p>
 A default implementation is provided that returns null so that existing classes that extend ELResolver can continue
 to function.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The context of this evaluation.</dd>
<d