private HtmlDom GetHtmlDomWithJustOnePage(IPage page)
{
var divNodeForThisPage = page.GetDivNodeForThisPage();
if (divNodeForThisPage == null)
{
throw new ApplicationException(String.Format("The requested page {0} from book {1} isn't in this book {2}.", page.Id,
page.Book.FolderPath, FolderPath));
}
return GetHtmlDomWithJustOnePage(divNodeForThisPage);
}