System.Xml.Xsl.Xslt.XsltInput.MoveToParent C# (CSharp) Method

        public bool MoveToParent() {
            Debug.Assert(lastMove == Moves.Next && !lastResult, "All siblings must be visited before moving to parent");
            // We shouldn't call StepOffNode() here because we already left last node.
            bool result = true;         // Frankly, we should return false for the root
            SetLastMove(Moves.Parent, result);
            return result;
        }