code: func Options(opts ...grpc.ServerOption) server.Option {
  	return func(o *server.Options) {
  		if o.Context == nil {
  			o.Context = context.Background()
  		}
  		o.Context = context.WithValue(o.Context, grpcOptions{}, opts)
  	}
  }
docs: // Options to be used to configure gRPC options