code: func (s *Service) RegisterSDK(r *Registry) {
  	if s.ServeMux == nil {
  		s.ServeMux = http.NewServeMux()
  	}
  
  	s.sdk[r.Path] = r
  	s.ServeMux.HandleFunc(r.Path, s.ServeSDK)
  }
docs: // RegisterSDK adds an HTTP handler for the Registry's Path and Namespace.