code: function getUrlFromDimensionRequestString(item, dimensionRequestString) {
    var url = item._originalUrl;
    if (url[url.length - 1] !== "/") {
      url += "/";
    }
    url += dimensionRequestString + "/" + item.providerId;
    if (defined(item.startTime)) {
      url += "?startTime=" + item.startTime;
      if (defined(item.endTime)) {
        url += "&endTime=" + item.endTime;
      }
    } else if (defined(item.endTime)) {
      url += "?endTime=" + item.endTime;
    }
    return url;
  }
docs: Convert a dimension request string like "a+b+c.d.e+f.g" into a URL.