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

        public override DataUri[] GetItemsInWorkflowState(WorkflowInfo info, CallContext context)
        {
            Guid workflowStateId;

            if (Guid.TryParse(info.StateID, out workflowStateId))
            {
                var items = Provider.GetItemsInWorkflowState(workflowStateId);
                var result = items.Select(x => x.FieldValues
                                                   .Where(y => y.Id == FieldIDs.WorkflowState.Guid)
                                                   .Select(y => new DataUri(new ID(x.Id), LanguageManager.GetLanguage(y.Language), new Version(y.Version ?? 1)))
                    ).ToList();

                if (result.Any())
                {
                    return result.Aggregate((x, y) => (x ?? new DataUri[] {}).Concat(y ?? new DataUri[] {})).ToArray();
                }

                return new DataUri[] {};
            }

            return new DataUri[] {};
        }