Investigate use of OperationContext.completeStep() from within

The lines are highlighted in https://github.com/jbossas/jboss-as/pull/1709/files
HandlerDisable and HandlerEnable do things like

public void execute(OperationContext context, ModelNode operation) {
if (context.isNormalServer()) {
context.addStep(new OperationStepHandler() {
if (controller != null) {
controller.addListener(new AbstractServiceListener<Object>() {
public void listenerAdded(ServiceController<?> serviceController)

{ serviceController.setMode(ServiceController.Mode.NEVER); }

@Override
public void transition(ServiceController<?> serviceController, ServiceController.Transition transition) {
if (transition == ServiceController.Transition.STOPPING_to_DOWN)

{ context.completeStep(); <<<< }

}
});
} else

{ context.completeStep(); }

}
}, OperationContext.Stage.RUNTIME);
}
context.completeStep();
}