System.Xml.Xsl.Xslt.XsltLoader.XslSort C# (CSharp) Method

        private XslNode XslSort(int sortNumber)
        {
            ContextInfo ctxInfo = _input.GetAttributes(_sortAttributes);

            string select = ParseStringAttribute(0, "select");
            string lang = ParseStringAttribute(1, "lang");
            string order = ParseStringAttribute(2, "order");
            string collation = ParseCollationAttribute(3);
            TriState stable = ParseYesNoAttribute(4, "stable");
            string caseOrder = ParseStringAttribute(5, "case-order");
            string dataType = ParseStringAttribute(6, "data-type");

            if (stable != TriState.Unknown)
            {
                CheckError(sortNumber != 0, SR.Xslt_SortStable);
            }

            List<XslNode> content = null;
            if (V1)
            {
                CheckNoContent();
            }
            else
            {
                content = LoadContent(select != null);
                if (content.Count != 0)
                {
                    ReportNYI("xsl:sort/*");
                    content = null;
                }
            }

            if (select == null /*&& content.Count == 0*/)
            {
                select = ".";
            }

            return SetInfo(f.Sort(select, lang, dataType, order, caseOrder, _input.XslVersion),
                null, ctxInfo
            );
        }