public void Store(Video video)
 {
     Empty = false;
     VideoIndexes.Add(video.Index);
     SpaceLeft -= video.Size;
 }
 public string StoredVideosToString()
 {
     return(string.Join(" ", VideoIndexes.Select(vi => vi.ToString()).ToList()));
 }
 public bool CanStore(Video video)
 {
     return(SpaceLeft > video.Size &&
            !VideoIndexes.Contains(video.Index));
 }