code: func (api *Client) ConnectRTM() (info *Info, websocketURL string, err error) {
  	ctx, cancel := context.WithTimeout(context.Background(), websocketDefaultTimeout)
  	defer cancel()
  
  	return api.ConnectRTMContext(ctx)
  }
docs: // ConnectRTM calls the "rtm.connect" endpoint and returns the provided URL and the compact Info block.
  //
  // To have a fully managed Websocket connection, use `NewRTM`, and call `ManageConnection()` on it.