How to use the fsociety.arachni function in fsociety

elif choiceweb == "5":
            sqlscan()
        elif choiceweb == "6":
            wpminiscanner()
        elif choiceweb == "7":
            wppluginscan()
        elif choiceweb == "8":
            shelltarget()
        elif choiceweb == "9":
            joomlarce()
        elif choiceweb == "10":
            vbulletinrce()
        elif choiceweb == "11":
            brutex()
        elif choiceweb == "12":
            arachni()
        elif choiceweb == "99":
            fsociety()
        else:
            self.__init__()
        self.completed()