I want to add the following to the standalone-full.xml through Wildfly/Jboss CLI.
<subsystem xmlns="urn:jboss:domain:security:2.0">
<security-domains>
<security-domain name="MY_NAME" cache-type="default">
<authentication>
<login-module code="XXX" flag="optional">
<module-option name="password-stacking" value="useFirstPass"/>
</login-module>
<login-module code="YYY" flag="required">
<module-option name="password-stacking" value="useFirstPass"/>
</login-module>
</authentication>
</security-domain>
</security-domains>
</subsystem>