an>()</code>
<div class="block">Return a string that uniquely identifies this caller within the identity store
 (since the Principal name used may not be unique).</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../javax/security/enterprise/identitystore/Crede