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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 close(self):
 """Shut down an SOL session, """

        if self.ipmi_session:
            self.ipmi_session.unregister_keepalive(self.keepaliveid)
        if self.activated:
            try:
                self.ipmi_session.raw_command(netfn=6, command=0x49,
                                              data=(1, 1, 0, 0, 0, 0))
            except exc.IpmiException:
                # if underlying ipmi session is not working, then
                # run with the implicit success
                pass