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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_client_rpc(self):
 """Setup RPC client for dfa agent."""

        # Setup RPC client.
        self.clnt = rpc.DfaRpcClient(self._url, constants.DFA_SERVER_QUEUE,
                                     exchange=constants.DFA_EXCHANGE)