/subsystem=elytron/credential-store=cs:add(location=cs.jceks,create=true,relative-to=jboss.server.data.dir,credential-reference={clear-text=pass})
/subsystem=elytron/credential-store=cs:add-alias(alias=exist,secret-value=pass)
/subsystem=elytron/authentication-configuration=cfg1:add(credential-reference={store=cs,alias=exist})
{"outcome" => "success"}
/subsystem=elytron/authentication-configuration=cfg2:add(credential-reference={store=cs,alias=nonexist})
{
    "outcome" => "failed",
    "failure-description" => {"WFLYCTL0080: Failed services" => {"org.wildfly.security.authentication-configuration.cfg2" => "Failed to start service
    Caused by: java.lang.IllegalStateException: java.lang.NullPointerException
    Caused by: java.lang.NullPointerException"}},
    "rolled-back" => true
}

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-8) MSC000001: Failed to start service org.wildfly.security.authentication-configuration.cfg2: org.jboss.msc.service.StartException in service org.wildfly.security.authentication-configuration.cfg2: Failed to start service
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1978)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: java.lang.NullPointerException
	at org.wildfly.extension.elytron.AuthenticationClientDefinitions$1.lambda$getValueSupplier$17(AuthenticationClientDefinitions.java:364)
	at java.util.function.Function.lambda$andThen$5(Function.java:88)
	at org.wildfly.extension.elytron.AuthenticationClientDefinitions$1.lambda$getValueSupplier$18(AuthenticationClientDefinitions.java:370)
	at org.wildfly.extension.elytron.TrivialService.start(TrivialService.java:53)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
	... 3 more
Caused by: java.lang.NullPointerException
	at org.wildfly.extension.elytron.AuthenticationClientDefinitions$1.lambda$getValueSupplier$17(AuthenticationClientDefinitions.java:359)
	... 8 more