ntext</code> - The context of this evaluation.</dd>
<dd><code>base</code> - The base object whose property value is to be analyzed, or <code>null</code> to analyze a top-level
 variable.</dd>
<dd><code>property</code> - The property or variable to return the read-only status for.</dd>
<dt>Returns:</dt>
<dd>If the <code>propertyResolved</code> property of <code>ELContext</code> was set to <code>true</code>, then
 <code>true</code> if the property is read-only or <code>false</code> if not; otherwise undefined