/// <summary>Returns an enumerator that iterates through the children in this property.</summary>
/// <returns>A <see cref="T:System.Collections.Generic.IEnumerator`1" /> that can be used to iterate through the children
/// in this property.</returns>
public virtual IEnumerator <WZObject> GetEnumerator()
{
return(_canContainChildren ? _backing.GetEnumerator() : Enumerable.Empty <WZObject>().GetEnumerator());
}