public void ToAlbum_FromAlbumDtoWithEmptyPhotoSet_ShouldSucceedAndMapToAlbumWithNoPhotos()
        {
            // ARRANGE
            var dto    = DtoBuilder.CreateAlbum();
            var photos = DtoBuilder.CreatePhotos(0);

            // ACT
            var album = dto.ToAlbum(photos);

            // ASSERT
            album.ShouldMatch(dto);
        }