Wait until all nodes are online (their managers accept connections)
        or timeout expires. Should be called after :meth:`spawn_nodes`.

        This is an alias for :meth:`~creamas.mp.MultiEnvironment.wait_slaves`.

async def wait_nodes(self, timeout, check_ready=True):
        """Wait until all nodes are online (their managers accept connections)
        or timeout expires. Should be called after :meth:`spawn_nodes`.

        This is an alias for :meth:`~creamas.mp.MultiEnvironment.wait_slaves`.
        """
        return await self.wait_slaves(timeout, check_ready=check_ready)