public Guid Create(AuctionCreation command)
        {
            var auctionId     = Guid.NewGuid();
            var listingId     = Guid.NewGuid();
            var startingPrice = new Money(command.StartingPrice);

            var listing = new Listing(listingId, command.SellerId, new ListingFormat(auctionId, FormatType.Auction));

            var auction = new Auction(auctionId, listingId, startingPrice, command.EndsAt);

            // Can seller list
            var seller = _sellerService.GetSeller(command.SellerId);

            if (seller != null && seller.CanList)
            {
                _listings.Add(listing);
                _auctions.Add(auction);
            }

            // _unitOfWork.SaveChanges();

            return(auctionId);
        }