@Override
    public void populateAttributes(final AuthenticationBuilder builder, final AuthenticationTransaction transaction) {
        builder.addAttribute(AuthenticationManager.AUTHENTICATION_DATE_ATTRIBUTE, ZonedDateTime.now(ZoneOffset.UTC).toEpochSecond());
    }
This is {@link AuthenticationDateAttributeMetaDataPopulator}.

@author Misagh Moayyed
@since 5.1.0
core/cas-server-core-authentication-api/src/main/java/org/apereo/cas/authentication/metadata/AuthenticationDateAttributeMetaDataPopulator.java