public void ClearTabs()
{
Given_A_TextFormatter();
_sut.SetTab(10);
_sut.SetTab(20);
_sut.SetTab(20);
Assert.AreEqual(3, _sut.Tabs.Count());
var tab10 = _sut.Tabs.Where(o => o.Position == 10).ToArray()[0];
var tab20_1 = _sut.Tabs.Where(o => o.Position == 20).ToArray()[0];
var tab20_2 = _sut.Tabs.Where(o => o.Position == 20).ToArray()[1];
_sut.ClearTabs(new TextFormatter.Tab[] { new TextFormatter.Tab(5), tab10 });
Assert.AreEqual(2, _sut.Tabs.Count());
_sut.ClearTabs(new TextFormatter.Tab[] { tab20_1 });
Assert.AreEqual(1, _sut.Tabs.Count());
}