private boolean isCheckedConversion(XPathType exprType, XPathType type) {

            if (exprType == XPathType.NODESET) {
                if (type == XPathType.STRING && OPTIONS.get(0)) return true;
                if (type == XPathType.NUMBER && OPTIONS.get(4)) return true;
                if (type == XPathType.BOOLEAN && OPTIONS.get(8)) return true;
            } else if (exprType == XPathType.STRING) {
                if (type == XPathType.NUMBER && OPTIONS.get(5)) return true;
                if (type == XPathType.BOOLEAN && OPTIONS.get(9)) return true;
            } else if (exprType == XPathType.NUMBER) {
                if (type == XPathType.STRING && OPTIONS.get(2)) return true;
                if (type == XPathType.BOOLEAN && OPTIONS.get(10)) return true;
            } else if (exprType == XPathType.BOOLEAN) {
                if (type == XPathType.STRING && OPTIONS.get(3)) return true;
                if (type == XPathType.NUMBER && OPTIONS.get(11)) return true;
            }
            return false;
        }
private boolean isCheckedConversion(XPathType exprType, XPathType type)