protected string GetStyleSheetLink(string url, bool prefixWithImagePath, string prefix, string cacheInvalidationSuffix) { string realUrl = url; if (!realUrl.IsEmpty()) { // i370377 - checks if the theme is external it don't need the local prefix if (realUrl.StartsWith("/") || realUrl.StartsWith("http://") || realUrl.StartsWith("https://")) { prefixWithImagePath = false; } if (prefixWithImagePath) { realUrl = prefix + realUrl; } return(" " + CssHelper.GetCssInclude(realUrl + cacheInvalidationSuffix)); } return(null); }