private void Save()
        {
            _repository.Save();
#if DEBUG
            var files       = Directory.GetFiles("ui", "*.json");
            var relativPath = @"..\..\..\Core\";
            Debug.Assert(Directory.Exists(relativPath));

            foreach (var f in files)
            {
                File.Copy(f, Path.Combine(relativPath, f), true);
            }
#endif
        }