/javax/faces/context/FacesContext.html" title="class in javax.faces.context"><code>FacesContext</code></a> for the current request</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether or not this expression is read only</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../javax/faces/el/EvaluationException.html" title="class in javax.faces.el">EvaluationException</a></code> - if an exception is thrown while getting
  the description of the property (the thrown ex