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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 _starttls(self):
 """ Exchange a STARTTLS message with Riak to initiate secure communications return True is Riak responds with a STARTTLS response, False otherwise """

        resp_code, _ = self._non_connect_send_recv(
            riak.pb.messages.MSG_CODE_START_TLS)
        if resp_code == riak.pb.messages.MSG_CODE_START_TLS:
            return True
        else:
            return False