public List <KronosTimeEntry> Add(List <KronosTimeEntry> entries)
        {
            List <KronosTimeEntry> failures = new List <KronosTimeEntry>();

            foreach (KronosTimeEntry entry in entries)
            {
                bool confirm = repo.AddRecentTimeEntry(entry);
                if (!confirm)
                {
                    failures.Add(entry);
                }
            }
            return(failures);
        }