code: async def wait_nodes(self, timeout, check_ready=True):
          
          return await self.wait_slaves(timeout, check_ready=check_ready)
docs: 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`.