public async Task DeleteItem()
        {
            var uomToDelete = new Uom();
            var mocks       = new CollectionPageControllerMocks <Uom>();

            mocks.CollectionPageViewModel.Setup(v => v.DeleteAsync(uomToDelete)).Returns(Task.CompletedTask);
            var page = new CollectionPage <Uom>(mocks.CreateViewCell.Object);

            BuildController(mocks, page);

            await page.DeleteButtonClickedAsync();

            await page.OnItemSelectedAsync(uomToDelete);
        }