public async Task <List <Album> > GetSingerAlbumsAsync(string singerName)
{
List <Album> albums;
albums = await _dbRepo.GetSingerAlbumsAsync(singerName);
if (albums.Count == 0)
{
albums = await _lastAlbumRepo.GetSingerAlbumsAsync(singerName);
_dbRepo.AddAlbums(albums);
}
return(albums);
}