public async Task <IEnumerable <EpisodeCharacterDTO> > GetAllEpisodesCharacters(IEnumerable <int> characterIds)
 {
     return(await _episodeRepository.GetAllEpisodesCharacters()
            .Where(x => characterIds.Contains(x.CharacterId))
            .Select(x => new EpisodeCharacterDTO(x.EpiosdeId, x.CharacterId))
            .ToListAsync()
            .ConfigureAwait(false));
 }