public async Task <IEnumerable <TcgCard> > GetTcgCardsBySetAsync(string set)
 {
     return(await _tcgBroker.GetMTGCardListAsync(set));
 }
        private async Task <List <TcgCard> > GetNonReferencedListOfCardsAsync(string set)
        {
            var referencedCardList = await _tcgBroker.GetMTGCardListAsync(set);

            return(referencedCardList.Select(card => card.Clone()).ToList());
        }