How to use the fsociety.sniffingSpoofingMenu function in fsociety

{0}--INSTALL & UPDATE
       {11}-CONTRIBUTORS
       {99}-EXIT\n
     ''')
        choice = raw_input(fsocietyPrompt)
        clearScr()
        if choice == "1":
            informationGatheringMenu()
        elif choice == "2":
            passwordAttacksMenu()
        elif choice == "3":
            wirelessTestingMenu()
        elif choice == "4":
            exploitationToolsMenu()
        elif choice == "5":
            sniffingSpoofingMenu()
        elif choice == "6":
            webHackingMenu()
        elif choice == "7":
            privateWebHacking()
        elif choice == "8":
            postExploitationMenu()
        elif choice == "0":
            self.update()
        elif choice == "11":
            self.githubContributors()
        elif choice == "99":
            with open(configFile, 'wb') as configfile:
                config.write(configfile)
            sys.exit()
        elif choice == "\r" or choice == "\n" or choice == "" or choice == " ":
            self.__init__()

def ssls():
    print('''sslstrip is a MITM tool that implements Moxie Marlinspike's SSL stripping
    attacks.
    It requires Python 2.5 or newer, along with the 'twisted' python module.''')
    if yesOrNo():
        os.system("git clone --depth=1 https://github.com/moxie0/sslstrip.git")
        os.system("apt-get install python-twisted-web")
        os.system("python sslstrip/setup.py")
    else:
        sniffingSpoofingMenu.completed("SSlStrip")