python windows service

service.py

import win32serviceutil
import win32service
import win32event
import servicemanager
# import signal
# import os
from multiprocessing import Process
from main import app


# Usage:
  # python service.py install
  # python service.py start
  # python service.py stop
  # python service.py remove
  # python service.py --username <username> --password <password> --startup auto install

class Service(win32serviceutil.ServiceFramework):
    _svc_name_ = "ServiceName"
    _svc_display_name_ = "Service Display Name"
    _svc_description_ = "Service description."

    def __init__(self, *args):
        super().__init__(*args)

    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        self.process.terminate()
        # os.kill(os.getpid(), signal.SIGTERM)
        self.ReportServiceStatus(win32service.SERVICE_STOPPED)

    def SvcDoRun(self):
        servicemanager.LogMsg(
            servicemanager.EVENTLOG_INFORMATION_TYPE,
            servicemanager.PYS_SERVICE_STARTED,
            (self._svc_name_, '')
        )
        self.process = Process(target=self.main)
        self.process.start()
        self.process.run()
    
    def main(self):
        pass


if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(Service)

In which circumstance are --username and --password parameters used? Are they required only for installing the service as automatic starting?
Could you please give an example of the username including the domain name?