public void Delete()
{
KmlItem item = new KmlItem("test");
Assert.IsFalse(item.Delete());
item.CanBeDeleted = false;
Assert.IsFalse(item.Delete());
KmlNode root = new KmlNode("root");
root.Add(item);
Assert.AreEqual(root, item.Parent);
Assert.IsFalse(item.Delete());
item.CanBeDeleted = true;
Assert.IsTrue(item.Delete());
}