System.Xml.XPath.XPathNavigator.IsValidChildType C# (CSharp) Method

        private bool IsValidChildType(XPathNodeType type)
        {
            switch (NodeType)
            {
                case XPathNodeType.Root:
                    switch (type)
                    {
                        case XPathNodeType.Element:
                        case XPathNodeType.SignificantWhitespace:
                        case XPathNodeType.Whitespace:
                        case XPathNodeType.ProcessingInstruction:
                        case XPathNodeType.Comment:
                            return true;
                    }
                    break;
                case XPathNodeType.Element:
                    switch (type)
                    {
                        case XPathNodeType.Element:
                        case XPathNodeType.Text:
                        case XPathNodeType.SignificantWhitespace:
                        case XPathNodeType.Whitespace:
                        case XPathNodeType.ProcessingInstruction:
                        case XPathNodeType.Comment:
                            return true;
                    }
                    break;
            }
            return false;
        }