perty or variable to return the read-only status for.</dd>
<dt><span class="returnLabel">Returns:</span></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.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html?is-external=true" tit