public Comment MapData(CommentModel m, int p)
 {
     Comment c = new Comment();
     c.Id = m.Id;
     c.Text = m.Text;
     c.Titel = m.Titel;
     c.Url = m.Url;
     c.VacationId = p;
     return c;
 }
        public ICollection<CommentModel> MapData(ICollection<Comment> comments)
        {
            ICollection<CommentModel> commentModels = new List<CommentModel>();
            if (comments != null)
            {
                foreach (Comment c in comments)
                {
                    CommentModel m = new CommentModel();

                    m.Id = c.Id;
                    m.Titel = c.Titel;
                    m.Text = c.Text;
                    m.Url = c.Url;
                    m.VacId = c.VacationId;
                    commentModels.Add(m);
                }
            }
            return commentModels;
        }