code: func NewServerWithBrokerBackend(cnf *config.Config, brokerServer brokersiface.Broker, backendServer backendsiface.Backend) *Server {
  	return &Server{
  		config:          cnf,
  		registeredTasks: make(map[string]interface{}),
  		broker:          brokerServer,
  		backend:         backendServer,
  	}
  }
docs: // NewServerWithBrokerBackend ...