public IEnumerable<IChapterRecord> GetAvailableChapters(IMangaRecord manga)
{
if (manga == null)
throw new ArgumentNullException("manga");
var scraper = ScraperLoader.Instance.AllScrapers.FirstOrDefault(s => s.ScraperGuid == manga.Scraper);
if (scraper == null)
return Enumerable.Empty<IChapterRecord>();
return scraper.GetAvailableChapters(manga);
}