@Override
  public boolean isEnabled() {
    return (proxiedUserDetails != null) && proxiedUserDetails.isEnabled();
  }
Details about the proxy user that was authenticated.
<p>
This user that authenticated wth Ambari but specified a doAs or proxied user to be used as the acting user for operations.
ambari-server/src/main/java/org/apache/ambari/server/security/authentication/AmbariProxiedUserDetailsImpl.java