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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 initiate(self, sa):
 """Initiate an SA. :param sa: the SA to initiate :type sa: dict :return: logs emitted by command, with `errmsg` given on failure :rtype: :py:class:`vici.session.CommandResult` """

        response = self.handler.streamed_request("initiate", "control-log", sa)
        return self._result(*response)