s instead looked up
 using search.
 <p>
 The value of this attribute is returned as the caller principal name
 for a successful credential validation.
 <p>
 The following gives an example in ldif format:
 <pre>
 <code>
 dn: uid=peter,ou=caller,dc=eclipse,dc=net
 objectclass: top
 objectclass: uidObject
 objectclass: person
 uid: peter
 cn: Peter Smith
 sn: Peter
 userPassword: secret1
 </code>
 </pre></div>
<dl class="notes">
<dt>Returns:</dt>
<dd>Name of the attribute that represents the caller name</dd>
<