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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:
 async def ping(self, conversation_id: uuid.UUID = None) -> float: """ Send a message to the remote server to check liveness. Returns: The round-trip time to receive a Pong message in fractional seconds Examples: """

        cmd = convo.Ping(conversation_id=conversation_id or uuid.uuid4())
        result = await self.dispatcher.start_conversation(cmd)

        return await result