    <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;value)</code>
<div class="block">Adds an extension attribute to the
 <code>W3CEndpointReference</code> instance's
 <code>wsa:EndpointReference</code> element.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../jakarta/xml/ws/wsaddressing/W3CEndpointReference.html" title="class in jakarta.xml.ws.wsaddressing">W3CEnd