@Override
    protected String getUsername() {
        return "expirestomorrow";
    }
Unit test for {@link LdapAuthenticationHandler}.
This test demonstrates password policy for AD by using user which soon to expire password.
@author Hal Deadman
@since 6.1.0
support/cas-server-support-ldap/src/test/java/org/apereo/cas/authentication/ActiveDirectoryLdapAuthenticationHandlerPasswordPolicyTests.java