Returns the current Raft leader

        Returns:
            str: address of leader such as ``10.1.10.12:8300``

async def leader(self):
        """Returns the current Raft leader

        Returns:
            str: address of leader such as ``10.1.10.12:8300``
        """
        response = await self._api.get("/v1/status/leader")
        if response.status == 200:
            return response.body