t
                  value is associated</dd>
<dd><code>value</code> - Model object value to be converted
                  (may be <code>null</code>)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a zero-length String if value is <code>null</code>,
         otherwise the result of the conversion</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../javax/faces/convert/ConverterException.html" title="class in javax.faces.convert">ConverterException</a></code> - if co