/// <summary>
        /// Converts FB2 epigraph element
        /// </summary>
        /// <param name="epigraphItem"></param>
        /// <param name="epigraphConverterParams"></param>
        /// <returns>XHTML representation</returns>
        public Div Convert(EpigraphItem epigraphItem, EpigraphConverterParamsV3 epigraphConverterParams)
        {
            if (epigraphItem == null)
            {
                throw new ArgumentNullException("epigraphItem");
            }
            var content = new Div(HTMLElementType.HTML5);

            foreach (var element in epigraphItem.EpigraphData)
            {
                if (element is ParagraphItem)
                {
                    var paragraphConverter = new ParagraphConverterV3();
                    content.Add(paragraphConverter.Convert(element as ParagraphItem,
                                                           new ParagraphConverterParamsV3 {
                        ResultType = ParagraphConvTargetEnumV3.Paragraph, Settings = epigraphConverterParams.Settings, StartSection = false
                    }));
                }
                if (element is PoemItem)
                {
                    var poemConverter = new PoemConverterV3();
                    content.Add(poemConverter.Convert(element as PoemItem,
                                                      new PoemConverterParamsV3 {
                        Level = epigraphConverterParams.Level + 1, Settings = epigraphConverterParams.Settings
                    }
                                                      ));
                }
                if (element is CiteItem)
                {
                    var citationConverter = new CitationConverterV3();
                    content.Add(citationConverter.Convert(element as CiteItem,
                                                          new CitationConverterParamsV3 {
                        Level = epigraphConverterParams.Level + 1, Settings = epigraphConverterParams.Settings
                    }));
                }
                if (element is EmptyLineItem)
                {
                    var emptyLineConverter = new EmptyLineConverterV3();
                    content.Add(emptyLineConverter.Convert());
                }
            }

            foreach (var author in epigraphItem.TextAuthors)
            {
                var epigraphAuthorConverter = new EpigraphAuthorConverterV3();
                content.Add(epigraphAuthorConverter.Convert(author as TextAuthorItem, new EpigraphAuthorConverterParamsV3 {
                    Settings = epigraphConverterParams.Settings
                }));
            }

            SetClassType(content, ElementStylesV3.EpigraphMain);

            content.GlobalAttributes.ID.Value = epigraphConverterParams.Settings.ReferencesManager.AddIdUsed(epigraphItem.ID, content);

            return(content);
        }
        /// <summary>
        /// Converts FB2 epigraph element
        /// </summary>
        /// <param name="epigraphItem"></param>
        /// <param name="epigraphConverterParams"></param>
        /// <returns>XHTML representation</returns>
        public Div Convert(EpigraphItem epigraphItem, EpigraphConverterParamsV3 epigraphConverterParams)
        {
            if (epigraphItem == null)
            {
                throw new ArgumentNullException("epigraphItem");
            }
            var content = new Div(HTMLElementType.HTML5);

            foreach (var element in epigraphItem.EpigraphData)
            {
                if (element is ParagraphItem)
                {
                    var paragraphConverter = new ParagraphConverterV3();
                    content.Add(paragraphConverter.Convert(element as ParagraphItem,
                        new ParagraphConverterParamsV3 { ResultType = ParagraphConvTargetEnumV3.Paragraph, Settings = epigraphConverterParams.Settings, StartSection = false }));
                }
                if (element is PoemItem)
                {
                    var poemConverter = new PoemConverterV3();
                    content.Add(poemConverter.Convert(element as PoemItem,
                        new PoemConverterParamsV3 { Level = epigraphConverterParams.Level + 1, Settings = epigraphConverterParams.Settings }
                        ));
                }
                if (element is CiteItem)
                {
                    var citationConverter = new CitationConverterV3();
                    content.Add(citationConverter.Convert(element as CiteItem,
                        new CitationConverterParamsV3 { Level = epigraphConverterParams.Level + 1, Settings = epigraphConverterParams.Settings }));
                }
                if (element is EmptyLineItem)
                {
                    var emptyLineConverter = new EmptyLineConverterV3();
                    content.Add(emptyLineConverter.Convert());
                }
            }

            foreach (var author in epigraphItem.TextAuthors)
            {
                var epigraphAuthorConverter = new EpigraphAuthorConverterV3();
                content.Add(epigraphAuthorConverter.Convert(author as TextAuthorItem, new EpigraphAuthorConverterParamsV3 { Settings = epigraphConverterParams.Settings }));
            }

            SetClassType(content, ElementStylesV3.Epigraph);

            content.GlobalAttributes.ID.Value = epigraphConverterParams.Settings.ReferencesManager.AddIdUsed(epigraphItem.ID, content);

            return content;
        }