Returns how the login sequence uses the Authentication provider.
<p>
A <code>REQUIRED</code> value specifies this LoginModule must succeed. Even if
it fails, authentication proceeds down the list of LoginModules for the configured
Authentication providers. This setting is the default.
<p>
A <code>REQUISITE</code> value specifies this LoginModule must succeed. If other
Authentication providers are configured and this LoginModule succeeds, authentication proceeds
down the list of LoginModules. Otherwise, control is return to the application.
<p>
A <code>SUFFICIENT</code> value specifies this LoginModule need not succeed. If it
does succeed, return control to the application. If it fails and other Authentication providers
are configured, authentication proceeds down the LoginModule list.
<p>
An <code>OPTIONAL</code> value specifies this LoginModule need not succeed. Whether it
succeeds or fails, authentication proceeds down the LoginModule list.
(Interface=weblogic.management.security.authentication.AuthenticatorMBean Attribute=getControlFlag)