code: func MustSetupWithFacility(procname string, facility spacelog.SyslogPriority) {
  	err := SetupWithFacility(procname, facility)
  	if err != nil {
  		panic(err)
  	}
  }
docs: // MustSetupWithFacility is deprecated and will be removed soon. Please
  // configure facility through the facility flag option.