if (s != null) {
            try {
                return Subject.doAs(s,
                        (PrivilegedExceptionAction<byte[]>) () -> ctx.initSecContext(token, 0, token == null ? 0 : token.length));
            } catch (PrivilegedActionException e) {
                if (e.getException() instanceof SmbException) {
                    throw (SmbException) e.getException();