code: func (bp *BuildPage) BuildbucketLink() *Link {
  	if bp.BuildbucketHost == "" {
  		return nil
  	}
  	u := url.URL{
  		Scheme: "https",
  		Host:   bp.BuildbucketHost,
  		Path:   "/rpcexplorer/services/buildbucket.v2.Builds/GetBuild",
  		RawQuery: url.Values{
  			"request": []string{fmt.Sprintf(`{"id":"%d"}`, bp.Id)},
  		}.Encode(),
  	}
  	return NewLink(
  		fmt.Sprintf("%d", bp.Id),
  		u.String(),
  		"Buildbucket RPC explorer for build")
  }
docs: // BuildbucketLink returns a link to the buildbucket version of the page.