private static Volume ParseBookItemNode(HtmlNode volNode)
        {
            var vol = new Volume();
            vol.Id = RetriveId(volNode.Descendants("a").First().Attributes["href"].Value);

            vol.Title = WebUtility.HtmlDecode(volNode.ChildNodes.FindFirst("h3").InnerText);

            vol.Label = ExtractLabel(vol.Title);
            vol.Title = RemoveLabel(vol.Title);

            vol.CoverImageUri = AbsoluteUrl(volNode.Descendants("img").First().Attributes["src"].Value);

            vol.Chapters = (from chaptersNode in volNode.ChildNodes.First(node => node.HasClass("linovel-chapter-list")).Descendants("a")
                            select new ChapterProperties
                            {
                                Id = RetriveId(chaptersNode.Attributes["href"].Value),
                                Title = RemoveLabel(WebUtility.HtmlDecode(chaptersNode.InnerText)),
                            }).ToList();
            return vol;
        }
        static Volume ParseVolumeSection(HtmlNode section)
        {
            Volume volume = new Volume();
            volume.CoverImageUri = section.FirstChildClass("cover").Element("img").GetAttributeValue("src", string.Empty);
            volume.Title = WebUtility.HtmlDecode(section.FirstChildClass("info").InnerText);
            volume.Label = ExtractLabel(volume.Title);
            volume.Title = RemoveLabel(volume.Title);
            volume.Chapters = section.Element("ul").Elements("li").Select(li =>
            {
                var cpt = new ChapterProperties();
                var a = li.Element("a");
                var pos = ParseIDFromReadLink(a.GetAttributeValue("href", String.Empty));
                cpt.Id = pos.ChapterId;
                cpt.ParentVolumeId = pos.VolumeId;
                cpt.ParentSeriesId = pos.SeriesId;
                cpt.Title = a.InnerText;
                return cpt;
            }).ToList();

            if (volume.Chapters.Count > 0)
            {
                volume.Id = volume.Chapters[0].ParentVolumeId;
                volume.ParentSeriesId = volume.Chapters[0].ParentSeriesId;
            }

            for (int chapterIdx = 0; chapterIdx < volume.Chapters.Count; chapterIdx++)
            {
                var chapter = volume.Chapters[chapterIdx];
                chapter.ChapterNo = chapterIdx;
                //chapter.ParentVolumeId = vol.Id;
                chapter.ParentVolumeId = volume.Id;
                if (chapterIdx > 0)
                {
                    //chapter.PrevChapter = vol.Chapters[chapterIdx - 1];
                    chapter.PrevChapterId = volume.Chapters[chapterIdx - 1].Id;
                }
                if (chapterIdx < volume.Chapters.Count - 1)
                {
                    //chapter.NextChapter = vol.Chapters[chapterIdx + 1];
                    chapter.NextChapterId = volume.Chapters[chapterIdx + 1].Id;
                }
            }
            return volume;
        }