// 1: Echo
	h1 := NewSingleHandler[*MSS, *MSS](handlerTest, NewMSS, NewMSS)
	// Handles incoming requests, returns a response
	handler1 := func(req *MSS) (resp *MSS, err *RemoteErr) {
		resp = h1.NewResponse()
		for k, v := range *req {
			(*resp)[k] = v
		}
		return resp, nil
	}
	// Return error
	h2 := NewSingleHandler[*MSS, *MSS](handlerTest2, NewMSS, NewMSS)
	handler2 := func(req *MSS) (resp *MSS, err *RemoteErr) {