code: func (remote *RemoteDebugger) QuerySelectorAll(nodeID int, selector string) (map[string]interface{}, error) {
  	return remote.SendRequest("DOM.querySelectorAll", Params{
  		"nodeId":   nodeID,
  		"selector": selector,
  	})
  }
docs: // QuerySelectorAll gets a list of nodeId for the specified selectors.