SitecoreData.DataProviders.DataProviderWrapper.GetPrefetchData C# (CSharp) Method

        private PrefetchData GetPrefetchData(ID itemId)
        {
            var data = PrefetchCache[itemId] as PrefetchData;

            if (data != null)
            {
                if (!data.ItemDefinition.IsEmpty)
                {
                    return data;
                }

                return null;
            }

            var itemDto = Provider.GetItem(itemId.ToGuid());

            if (itemDto != null)
            {
                data = new PrefetchData(new ItemDefinition(itemId, itemDto.Name, new ID(itemDto.TemplateId), new ID(itemDto.BranchId)), new ID(itemDto.ParentId));

                PrefetchCache.Add(itemId, data, data.GetDataLength());

                return data;
            }

            return null;
        }