code: func (remote *RemoteDebugger) Navigate(url string) (string, error) {
  	res, err := remote.SendRequest("Page.navigate", Params{
  		"url": url,
  	})
  	if err != nil {
  		return "", err
  	}
  
  	if errorText, ok := res["errorText"]; ok {
  		return "", NavigationError(errorText.(string))
  	}
  
  	frameID, ok := res["frameId"]
  	if !ok {
  		return "", nil
  	}
  	return frameID.(string), nil
  }
docs: // Navigate navigates to the specified URL.