public NotebookSection NewNotebookSection()
        {
            int sectionNumber = 1;

            if (NotebookSections.Count > 0)
            {
                sectionNumber = NotebookSections.Max(s => s.Order) + 1;
            }
            return(NotebookSection.New(this.Id, sectionNumber, ""));
        }
 public static NotebookSection NewNotebookSection(Guid id, Guid articleNotebookid, int order, string text)
 {
     return(NotebookSection.New(id, articleNotebookid, order, text));
 }