This allows us to work with lazily-evaluated IEnumerables.
@ -97,7 +97,7 @@ namespace Perspex.Controls.Presenters
if (value.Item1 != null)
{
this.Panel.Children.RemoveAll(generator.Remove(value.Item1));
this.Panel.Children.Clear();
INotifyCollectionChanged incc = value.Item1 as INotifyCollectionChanged;