protected async override void GetModelItems()
        {
            IsBusy = Visibility.Visible;
            var response = await maintenanceService.GetInventories();

            IsBusy = Visibility.Collapsed;

            if (response != null)
            {
                if (response.Inventories != null && response.Inventories.Count > 0)
                {
                    ModelDtos     = response.Inventories;
                    SelectedModel = ModelDtos.First();
                }
            }
        }
        protected async override void GetModelItems()
        {
            IsBusy = Visibility.Visible;
            var response = await testService.GetTestGroups();

            IsBusy = Visibility.Collapsed;

            if (response != null)
            {
                if (response.TestGroups != null && response.TestGroups.Count > 0)
                {
                    ModelDtos = response.TestGroups;
                    EditButtonActiveStateModel.Edit = true;
                    SelectedModel = ModelDtos.First();
                }
                else
                {
                    ModelDtos = null;
                    EditButtonActiveStateModel.Edit = false;
                }
            }
        }
        protected async override void GetModelItems()
        {
            SearchTitle = string.Empty;
            IsBusy      = Visibility.Visible;
            var response = await testService.GetOtherTestResults();

            IsBusy = Visibility.Collapsed;

            if (response != null)
            {
                if (response.OtherTests != null)
                {
                    ModelDtos         = SortOtherTests(response.OtherTests);
                    TestGroupTypeDtos = response.Groups;
                    TestTitleTypeDtos = response.Titles;

                    if (cachedModel != null)
                    {
                        SelectedModel = ModelDtos?.FirstOrDefault(x => x.TestTitleId == cachedModel.Id);
                        if (SelectedModel == null)
                        {
                            if (ModelDtos.Count > 0)
                            {
                                SelectedModel = ModelDtos.First();
                            }
                        }
                        cachedModel = null;
                    }
                    else
                    {
                        if (ModelDtos.Count > 0)
                        {
                            SelectedModel = ModelDtos.First();
                        }
                    }
                }
            }
        }