code: func (c *Page) SetDownloadBehavior(behavior string, downloadPath string) (*gcdmessage.ChromeResponse, error) {
  	var v PageSetDownloadBehaviorParams
  	v.Behavior = behavior
  	v.DownloadPath = downloadPath
  	return c.SetDownloadBehaviorWithParams(&v)
  }
docs: // SetDownloadBehavior - Set the behavior when downloading a file.
  // behavior - Whether to allow all or deny all download requests, or use default Chrome behavior if available (otherwise deny).
  // downloadPath - The default path to save downloaded files to. This is requred if behavior is set to 'allow'