BLL.Workflows.EffectiveMunkiTemplate.GetOptionlInstalls C# (CSharp) Метод

        private NSArray GetOptionlInstalls(string condition = null)
        {
            var optionalInstalls = new List<Models.MunkiManifestOptionInstall>();
            foreach (var templateId in _templateIds)
            {
                if (!string.IsNullOrEmpty(condition))
                    optionalInstalls.AddRange(
                        BLL.MunkiOptionalInstall.GetAllOptionalInstallsForMt(templateId)
                            .Where(x => x.Condition == condition));
                else
                {
                    optionalInstalls.AddRange(BLL.MunkiOptionalInstall.GetAllOptionalInstallsForMt(templateId)
                        .Where(x => string.IsNullOrEmpty(x.Condition)));
                }
            }

            var orderedOptionalInstalls = optionalInstalls.GroupBy(x => x.Name).Select(g => g.OrderByDescending(x => x.Version).First()).OrderBy(x => x.Name);

            NSArray plOptionalInstalls = new NSArray(orderedOptionalInstalls.Count());
            var counter = 0;
            foreach (var optionalInstall in orderedOptionalInstalls)
            {
                if (optionalInstall.IncludeVersion == 1)
                    plOptionalInstalls.SetValue(counter, optionalInstall.Name + "-" + optionalInstall.Version);
                else
                {
                    plOptionalInstalls.SetValue(counter, optionalInstall.Name);
                }
                counter++;
            }

            return plOptionalInstalls;
        }