public void SaveAggregate <TAggregate>(Guid id) where TAggregate : IAggregateRoot
        {
            var aggregate = AggregateStore.Where(x => x.Id == id).FirstOrDefault();

            if (aggregate == null)
            {
                aggregate = new AggregateStoreModel
                {
                    Id   = id,
                    Type = typeof(TAggregate).AssemblyQualifiedName
                };
                AggregateStore.Add(aggregate);
            }
            else
            {
                AggregateStore.Remove(aggregate);
            }
        }