code: func (v *Vibranium) SetNodeAvailable(ctx context.Context, opts *pb.NodeAvailable) (*pb.Node, error) {
  	n, err := v.cluster.SetNodeAvailable(ctx, opts.Podname, opts.Nodename, opts.Available)
  	if err != nil {
  		return nil, err
  	}
  	return toRPCNode(ctx, n), nil
  }
docs: // SetNodeAvailable set node availability