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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def setup_Q2Q(self, path, q2qPortnum=q2q.port, inboundTCPPortnum=q2q.port+1, publicIP=None ):
 """Set up a Q2Q service. """

        store = DirectoryCertificateAndUserStore(path)
        # store.addPrivateCertificate("kazekage")
        # store.addUser("kazekage", "username", "password1234")

        self.attach(q2q.Q2QService(
                protocolFactoryFactory=IdentityAdminFactory(store).examineRequest,
                certificateStorage=store,
                portal=Portal(store, checkers=[store]),
                q2qPortnum=q2qPortnum,
                inboundTCPPortnum=inboundTCPPortnum,
                publicIP=publicIP,
                ))