public void Copy()
{
_element.Add("A", new PListString("Foo"));
_element.Add("B", new PListInteger(10));
var copy = _element.Copy() as PListDictionary;
Assert.AreNotSame(copy, _element);
Assert.AreEqual(_element.Count, copy.Count);
foreach (var kvp in _element)
{
Assert.AreNotSame(kvp.Value, copy[kvp.Key]);
}
}