FastQuant.BarFactory.Add C# (CSharp) Method

        public void Add(BarFactoryItem item)
        {
            if (item.factory != null)
                throw new InvalidOperationException("BarFactoryItem is already added to another BarFactory instance.");

            item.factory = this;
            int id = item.Instrument.Id;
            var items = ItemLists[id] = ItemLists[id] ?? new List<BarFactoryItem>();
            if (
                items.Exists(
                    match =>
                        item.barType == match.barType && item.barSize == match.barSize &&
                        item.barInput == match.barInput && item.providerId == match.providerId))
                Console.WriteLine($"{DateTime.Now} BarFactory::Add Item '{item}' is already added");
            else
                items.Add(item);
        }