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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 switch_client(self):
 """ Switch client to this session. Raises ------ :exc:`exc.LibTmuxException` """

        proc = self.cmd('switch-client', '-t%s' % self.id)

        if proc.stderr:
            raise exc.LibTmuxException(proc.stderr)