e>circularReference</code></a>.</p>

 <p>This implementation is appropriate only for a DataType that
 cannot hold other DataTypes as children.</p>

 <p>The general contract of this method is that it shouldn't do
 anything if <a href="../../../../../org/apache/tools/ant/types/DataType.html#checked"><code>DataType.checked</code></a> is true and
 set it to true on exit.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/tools/ant/types/Data