/subsystem=elytron/simple-permission-mapper=SomeMapper:add(permission-mappings=[{roles=[All],permissions=[{class-name="org.wildfly.security.auth.permission.ChangeRoleMapperPermission"}]}])
{
    "outcome" => "failed",
    "failure-description" => {
        "WFLYCTL0080: Failed services" => {"org.wildfly.security.permission-mapper.SomeMapper" => "org.jboss.msc.service.StartException in service org.wildfly.security.permission-mapper.SomeMapper: Failed to start service
    Caused by: java.lang.NullPointerException"},
        "WFLYCTL0412: Required services that are not installed:" => ["org.wildfly.security.permission-mapper.SomeMapper"],
        "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined
    },
    "rolled-back" => true
}

ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service org.wildfly.security.permission-mapper.SomeMapper: org.jboss.msc.service.StartException in service org.wildfly.security.permission-mapper.SomeMapper: Failed to start service
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at org.wildfly.security.permission.ByNamePermissionCollection.doAdd(ByNamePermissionCollection.java:59)
	at org.wildfly.security.permission.AbstractPermissionCollection.add(AbstractPermissionCollection.java:83)
	at java.security.Permissions.add(Permissions.java:133)
	at org.wildfly.extension.elytron.PermissionMapperDefinitions.createSimplePermissionMapper(PermissionMapperDefinitions.java:214)
	at org.wildfly.extension.elytron.PermissionMapperDefinitions.access$000(PermissionMapperDefinitions.java:67)
	at org.wildfly.extension.elytron.PermissionMapperDefinitions$2.lambda$getValueSupplier$0(PermissionMapperDefinitions.java:188)
	at org.wildfly.extension.elytron.TrivialService.start(TrivialService.java:53)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881)
	... 3 more