public void UITestControlCollection_CanAddRange()
{
UITestControlCollection siblings = CheckBox.GetParent().GetChildren();
siblings.Should().NotBeNullOrEmpty("because the CheckBox should have siblings");
var beforeCount = siblings.Count;
var lastItem = siblings.Last();
var toAdd = new UITestControlCollection();
toAdd.Add(lastItem);
toAdd.Add(lastItem);
siblings
.AddRange(toAdd);
siblings
.Count
.Should()
.Be(beforeCount + 2, "because we added 2 Items");
}