System.Xml.XPathNodePointer.GetParent C# (CSharp) Метод

        private XmlNode GetParent(XmlNode node)
        {
            XPathNodeType xnt = ConvertNodeType(node);
            if (xnt == XPathNodeType.Namespace)
            {
                Debug.Assert(_parentOfNS != null);
                return _parentOfNS;
            }
            if (xnt == XPathNodeType.Attribute)
                return ((XmlAttribute)node).OwnerElement;
            return node.ParentNode;
        }