public async Task UpdateSerieAsync(CompetitionSerie serie)
 {
     await context.SaveChangesAsync();
 }
 public async Task DeleteSerieAsync(CompetitionSerie serie)
 {
     context.CompetitionSeries.Remove(serie);
     await context.SaveChangesAsync();
 }
 public async Task AddSerieAsync(CompetitionSerie serie)
 {
     serie.Id = Guid.NewGuid();
     context.CompetitionSeries.Add(serie);
     await context.SaveChangesAsync();
 }