/// <summary>
/// Processes creating Xml document.
/// </summary>
public void Process()
{
IEnumerable<string> stringValuesFromFile = dataRetriever.Load();
IEnumerable<URLAddress> urls = fromStringToUrlsTransformer.Transform(stringValuesFromFile);
XDocument xDocument = fromUrlToXDocumentTransformer.Transform(urls);
dataPersister.Save(xDocument);
}