t.getCallerPrincipal()</code></a>, and the principal supplied here
 as a parameter can be retrieved using <a href="../../../SecurityContext.html#getPrincipalsByType(java.lang.Class)"><code>SecurityContext.getPrincipalsByType(Class)</code></a>.
 When only one is added, it is returned by <a href="../../../SecurityContext.html#getCallerPrincipal()"><code>SecurityContext.getCallerPrincipal()</code></a>.

 <p>
 Note that after this call returned, the authenticated identity will not be immediately active. This
 w