code: func (s *RepositoriesService) ListPagesBuilds(ctx context.Context, owner, repo string, opt *ListOptions) ([]*PagesBuild, *Response, error) {
  	u := fmt.Sprintf("repos/%v/%v/pages/builds", owner, repo)
  	u, err := addOptions(u, opt)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	req, err := s.client.NewRequest("GET", u, nil)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	var pages []*PagesBuild
  	resp, err := s.client.Do(ctx, req, &pages)
  	if err != nil {
  		return nil, resp, err
  	}
  
  	return pages, resp, nil
  }
docs: // ListPagesBuilds lists the builds for a GitHub Pages site.
  //
  // GitHub API docs: https://developer.github.com/v3/repos/pages/#list-pages-builds