public WebCrawlerService(IDownloadWebPages pageDownloader, IParseWebPages webPageParser)
 {
     _pageDownloader = pageDownloader;
     _webPageParser = webPageParser;
 }
 public WebCrawlerService(IDownloadWebPages pageDownloader, IParseWebPages webPageParser)
 {
     _pageDownloader = pageDownloader;
     _webPageParser  = webPageParser;
 }