code: func (ns *NatsRPCClient) Init() error {
  	ns.running = true
  	conn, err := setupNatsConn(ns.connString, ns.appDieChan, nats.MaxReconnects(ns.maxReconnectionRetries))
  	if err != nil {
  		return err
  	}
  	ns.conn = conn
  	return nil
  }
docs: // Init inits nats rpc client