These arguments are resolved at install time and passed to the ServiceMain method of your service when it is started.
It is important to note that these start arguments are not maintained in the service control database by Windows. Each time the service is started, the start arguments have to be re-specified. As an example, if you set two start arguments for your service within this bean, and you enable the bean to start the service after installing, those arguments will be passed to your service's ServiceMain method when it is started by the installer. However, if the end user later stops the service manually, then restarts it, those arguments are not passed to your service.